SECTION [ ] [16611] SOLID STATE UNINTERRUPTIBLE POWER SUPPLY

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1 APC by Schneider Electric MGE GALAXY PW Data Center Grade Three Phase Uninterruptible Power Supply Parallel Module - Guide Specifications kva UPS THIS GUIDE SPECIFICATION IS WRITTEN IN ACCORDANCE WITH THE CONSTRUCTION SPECIFICATIONS INSTITUTE (CSI) MASTERFORMAT. THIS SECTION MUST BE CAREFULLY REVIEWED AND EDITED BY THE ARCHITECT OR THE ENGINEER TO MEET THE REQUIREMENTS OF THE PROJECT. COORDINATE THIS SECTION WITH OTHER SPECIFICATION SECTIONS IN THE PROJECT MANUAL AND WITH THE DRAWINGS. WHERE REFERENCE IS MADE THROUGHOUT THIS SECTION TO PROVIDE, INSTALL, SUBMIT, ETC., IT SHALL MEAN THAT THE CONTRACTOR, SUBCONTRACTOR, OR CONTRACTOR OF LOWER TIER SHALL PROVIDE, INSTALL, SUBMIT, ETC., UNLESS OTHERWISE INDICATED. THIS SECTION IS WRITTEN TO INCLUDE THE 2004 MASTERFORMAT AND THE 1995 MASTERFORMAT VERSIONS. WHERE APPLICABLE, THESE ITEMS ARE BRACKETED AND, IN EACH CASE, UNLESS OTHERWISE INDICATED, THE FIRST CHOICE APPLIES TO THE 2004 MASTERFORMAT AND THE SECOND CHOICE APPLIES TO THE 1995 MASTERFORMAT. SECTION [ ] [16611] SOLID STATE UNINTERRUPTIBLE POWER SUPPLY PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General Conditions, [Division 01 - GENERAL REQUIREMENTS] [Division 1 - GENERAL REQUIREMENTS], and other applicable specification sections in the Project Manual apply to the work specified in this Section. 1.2 SUMMARY A. Scope: Provide design and engineering, labor, material, equipment, related services, and supervision required, including, but not limited to, manufacturing, fabrication, erection, and installation for a solid state uninterruptible power supply (UPS) as required for the complete performance of the work, and as shown on the Drawings and as herein specified. B. Section Includes: The work specified in this Section includes, but shall not be limited to, a three-phase, continuous duty, solid state UPS. The UPS shall operate in conjunction with the existing building electrical system to provide precisely controlled power for critical equipment loads. The system shall consist of a solid state inverter, rectifier/battery charger, a storage battery, a static bypass transfer switch, synchronization control circuitry, connection control circuitry, disconnection control circuitry, system metering, system status indicators, system alarm annunciation circuitry, and accessories as specified herein. The system shall automatically ensure continuity of electric power within specified tolerances, without interruption, upon failure or deterioration of the normal power supply. Continuity of electric power to the load shall be supplied by the batteries, up to the specified maximum protection time or until restoration of the normal input AC power source, whichever occurs first. 1.3 REFERENCES A. General: The publications listed below form a part of this Specification to the extent referenced. The publications are referred to in the text by the basic designation only. The edition/revision of the referenced publications shall be the latest date as of the date of the Contract Documents, unless otherwise specified. B. Institute of Electrical and Electronics Engineers, Inc. (IEEE): Page 1 10/05/09

2 1. ANSI/IEEE C62.41, "Recommended Practice for Surge Voltages in Low-Voltage AC Power Circuits" (copyrighted by IEEE, ANSI approved). C. International Organization for Standardization (ISO): 1. ISO 9001, "Quality Management Systems - Requirements." D. National Fire Protection Association (NFPA): 1. NFPA 70, "National Electrical Code" (copyrighted by NFPA, ANSI approved) - hereinafter referred to as NEC. E. Underwriters Laboratories, Inc. (UL): 1. UL 1778, "Standard for Uninterruptible Power Supply Equipment" (copyrighted by UL, ANSI approved). 1.4 SYSTEM DESCRIPTION A. UPS Design Requirements: INSERT CONFIGURATION BELOW. 1. System Type: The UPS system shall be a parallel for [ ] configuration. The individual UPS modules shall be scalable up to 225 kva with minimal or no requirements for internal modification should the power level need to be increased. a. In the event that it should be required to add additional modules to the system, it shall be possible to add modules for either redundancy or capacity by junctioning the outputs of the modules. The system shall be capable of accommodating up to three modules for capacity plus one module for redundancy for a total of four modules. INSERT kva BELOW. 2. Output Power Continuous Rating: The continuous output power rating of the UPS shall be [ ] kva at a 0.9 lagging power factor. 3. Input Voltage: [ ] volts AC, ±15 percent, three-phase, 3 wires plus ground or 4 wires plus ground. INSERT VOLTAGE ABOVE AND BELOW. 4. Output Voltage: [ ] volts AC, three-phase, 3 wires or 4 wires plus ground (adjustable ±5 percent). INSERT MINUTES BELOW. 5. Battery Autonomy: UPS shall be capable of operating at full load for [ ] minutes at 0.8 PF output at a temperature of 77 F (25 C) on battery power. 6. Battery Type: Valve regulated sealed lead acid (VRLA). B. AC Input Characteristics: 1. Voltage: 480 volts AC, ±15 percent, three-phase, 3 wires plus ground or 4 wires plus ground. 2. Frequency: 60 hertz, ±10 percent. 3. Power Factor: Up to 0.9 at full load and nominal input voltage. 4. Total Harmonic Distortion: Less than 7.5 percent at 225 kva with full load and nominal input voltage. 5. Power Walk-In: 0 percent to 100 percent over a 5 second period. 6. Inrush Current: 100 percent of nominal input current for less than one cycle. 7. Reactive Current: Not to exceed 15 percent of the UPS nominal input current. C. AC Output Characteristics: 1. Voltage: 480 volts AC, three-phase, 3 wires or 4 wires plus ground (adjustable ±5 percent). Page 2 10/05/09

3 2. Frequency: 60 hertz, +2.0 hertz synchronized with bypass (selectable in 0.25 hertz increments), 60 hertz hertz free-running. 3. Voltage Regulation: +0.5 percent for balanced load, +1.0 percent for 20 percent unbalanced load, +3.0 percent for 100 percent unbalanced load. 4. Voltage Distortion: Maximum of 3 percent THD, and single harmonics of 1 percent maximum over the entire linear load. 5. Voltage Transient (Step Load) Response: +2 percent for 100 percent step load change. 6. Voltage Recovery Time: Return to within 0.5 percent of nominal value within milliseconds (one cycle). 7. Phase Angle Displacement: 120 degrees, +1 degree for balanced load; 120 degrees, +3 degrees for 100 percent unbalanced load. 8. Non-Linear Load Capability: Output voltage total harmonic distortion (THD) shall be less than 4 percent when connected to a 100 percent non-linear load with a crest factor not to exceed Slew Rate: 2.0 hertz/second maximum (selectable in 0.5 hertz/second increments). 10. Power Factor: Inverter Overload Capability: 125 percent of rated load for 10 minutes, 150 percent of rated load for 1 minute. 12. Bypass Overload Capability: 212 percent for 200 milliseconds. D. Battery: 1. Battery Voltage: 480 volts DC nominal. INSERT AMPERES BELOW. 2. Maximum DC Current: Maximum DC current at cutoff voltage shall be [ ] amperes. 1.5 SUBMITTALS A. General: See [Section SUBMITTAL PROCEDURES] [Section SUBMITTALS]. B. Product Data: Submit product data showing material proposed. Submit sufficient information to determine compliance with the Drawings and Specifications. Product data shall include, but shall not be limited to, the following: 1. Catalog sheets and technical data sheets to indicate physical data and electrical performance, electrical characteristics, and connection requirements. 2. Manufacturer s installation instructions indicating application conditions and limitations of use stipulated by product inspecting and testing agency. Include instructions for storage, handling, protection, examination, preparation, installation, and starting of the product. Include equipment installation outline, connection diagram for external cabling, internal wiring diagram, and written instruction for installation. C. Shop Drawings: Submit shop drawings for each product and accessory required. Include information not fully detailed in manufacturer s standard product data, including, but not limited to, complete electrical characteristics and connection requirements. Provide detailed equipment outlines with cabinet dimensions and spacing requirements; location of conduit entry/exit paths; location of floor/seismic mounting; available battery types/sizes; cabinet weights; heat rejection and air flow requirements; single-line diagram; and control and external wiring. D. Wiring Diagrams: Submit wiring diagrams detailing power, signal, and control systems, clearly differentiating between manufacturer-installed wiring and field-installed wiring, and between components provided by the manufacturer and those provided by others. E. Contract Closeout Submittals: 1. Project Record Documents: Submit a complete set of installation drawings showing all the information specified elsewhere in this Section. Page 3 10/05/09

4 2. Operation and Maintenance Data: Submit operation and maintenance data to include in operation and maintenance manuals specified in [Division 01 - GENERAL REQUIREMENTS] [Division 1 - GENERAL REQUIREMENTS], including, but not limited to, safe and correct operation of UPS functions. 1.6 QUALITY ASSURANCE A. Qualifications: 1. Manufacturer Qualifications: Manufacturer shall be a firm engaged in the manufacture of solid state UPS of types and sizes required, and whose products have been in satisfactory use in similar service for a minimum of 20 years. a. The manufacturer shall be ISO 9001 certified and shall be designed to internationally accepted standards. 2. Installer Qualifications: Installer shall be a firm that shall have a minimum of five years of successful installation experience with projects utilizing solid state UPS similar in type and scope to that required for this Project. B. Regulatory Requirements: Comply with applicable requirements of the laws, codes, ordinances, and regulations of Federal, State, and local authorities having jurisdiction. Obtain necessary approvals from such authorities. 1. The UPS shall meet the requirements of the following standards: a. UL-listed under UL b. UL Canada (cul). c. ANSI/IEEE C d. ISO The UPS shall be designed in accordance with the applicable sections of the documents published by: a. National Fire Protection Association (NFPA); NEC. b. National Electrical Manufacturers Association (NEMA). c. Occupational Safety and Health Administration (OSHA). 3. Components shall be listed by Underwriter's Laboratories, Inc. (UL) whenever such listings have been established. C. Factory Testing: Prior to shipment the manufacturer shall complete a documented test procedure to test functions of the UPS module and batteries (via a discharge test), when supplied by the UPS manufacturer, and warrant compliance with this Section. The factory test shall be performed in the presence of the Owner providing the manufacturer receives adequate prior notice. The manufacturer shall provide a copy of the test report upon request. D. Pre-Installation Conference: Conduct pre-installation conference in accordance with [Section PROJECT MEETINGS] [Section PROJECT MEETINGS]. Prior to commencing the installation, meet at the Project site to review the material selections, installation procedures, and coordination with other trades. Pre-installation conference shall include, but shall not be limited to, the Contractor, the Installer, and any trade that requires coordination with the work. Date and time of the pre-installation conference shall be acceptable to the Owner and the Architect/Engineer. E. Source Responsibility: Materials and parts comprising the UPS shall be new, of current manufacture, and shall not have been in prior service, except as required during factory testing. Active electronic devices shall be solid state and shall not exceed the manufacturer s recommended tolerances for temperature or current to ensure maximum reliability. Semiconductor devices shall be sealed. Relays shall be provided with dust covers. The manufacturer shall conduct inspections on incoming parts, modular assemblies, and final products. 1.7 DELIVERY, STORAGE, AND HANDLING Page 4 10/05/09

5 A. Deliver materials to the Project site in supplier s or manufacturer s original wrappings and containers, labeled with supplier s or manufacturer s name, material or product brand name, and lot number, if any. B. Store materials in their original, undamaged packages and containers, inside a well-ventilated area protected from weather, moisture, soiling, extreme temperatures, and humidity. C. Products shall be packaged in a manner to prevent penetration by debris and to allow safe delivery by modes of ground transportation and air transportation where specified. D. Prior to shipping, products shall be inspected at the factory for damage. E. Equipment shall be protected against extreme temperature and humidity and shall be stored in a conditioned or protected environment. F. Equipment containing batteries shall not be stored for a period exceeding three months without powering up the equipment for a period of eight hours to recharge the batteries. G. Off-loading from the truck and setting in place of equipment, including, but not limited to, batteries specified herein, shall be responsibility of the Contractor, including, but not limited to, associated labor, parts, tools, and equipment. H. Installation and wiring of equipment shall be the responsibility of the Contractor under a separate contract. 1.8 PROJECT CONDITIONS A. Environmental Requirements: Do not install solid state UPS until space is enclosed and weatherproof, wet work in space is completed and nominally dry, work above ceilings is complete, and ambient temperature and humidity conditions are and will be continuously maintained at values near those indicated for final occupancy. 1. The UPS shall be capable of withstanding any combination of the following environmental conditions in which it must operate without mechanical or electrical damage, or degradation of operating characteristics. a. Temperature: 1) UPS Module Operating: 32 F (0 C) to 104 F (40 C). 2) Non-Operating: -4 F (-20 C) to 113 F (45 C). b. Relative Humidity (Operating and Storage): 0 percent to 95 percent non-condensing. c. Barometric Pressure: Up to 3281 feet (1000 meters) above sea level / up to 32,808 feet (10,000 meters) above sea level non-operating. d. Audible Noise: 69 dba at 5 feet (1524 mm). 1.9 WARRANTY A. General: See [Section CLOSEOUT PROCEDURES] [Section CLOSEOUT PROCEDURES]. B. Special Warranty: The Contractor shall warrant the work of this Section to be in accordance with the Contract Documents and free from faults and defects in materials and workmanship for period indicated below. This special warranty shall extend the one year period of limitations contained in the General Conditions. The special warranty shall be countersigned by the Installer and the manufacturer. 1. UPS Module: The UPS shall be covered by a full parts and labor warranty from the manufacturer for a period of 12 months from date of installation or acceptance by the Owner or 18 months from date of shipment from the manufacturer, whichever occurs first. 2. Battery: The battery manufacturer s warranty shall be passed through to the final Owner and shall have a minimum period of one year. Page 5 10/05/09

6 C. Additional Owner Rights: The warranty shall not deprive the Owner of other rights the Owner may have under other provisions of the Contract Documents and shall be in addition to and run concurrent with other warranties made by the Contractor under requirements of the Contract Documents MAINTENANCE A. The manufacturer shall, upon request, provide spare parts kits for the UPS module in a timely manner as well as provide access to qualified factory-trained first party service personnel to provide preventative maintenance and service on the UPS module when required. B. UPS subassemblies, as well as the battery, shall be accessible from the front. UPS design shall provide maximum reliability and minimum MTTR (mean time to repair). To that end, the UPS shall be equipped with a self-test function to verify correct system operation. The self-test function shall identify the subassembly requiring repair in the event of a fault. The electronic UPS control and monitoring assembly shall therefore be fully microprocessor-based, thus doing away with potentiometer settings. This shall allow: 1. Auto-compensation of component drift. 2. Self-adjustment of replaced subassemblies. 3. Extensive acquisition of information vital for computer-aided diagnostics (local or remote). 4. Socket connection to interface with computer-aided diagnostics system. C. The UPS shall be repairable by replacing standard subassemblies requiring no adjustments. Communication via a modem with a remote maintenance system shall be possible. D. The manufacturer shall offer additional preventative maintenance and service contracts covering both the UPS and the battery bank. Accredited professional service engineers employed exclusively in the field of critical power systems service shall perform maintenance and service. The manufacturer shall also offer extended warranty contracts. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Basis of Design: Product specified is MGE Galaxy PW as manufactured by APC by Schneider Electric. Items specified are to establish a standard of quality for design, function, materials, and appearance. Equivalent products by other manufacturers are acceptable. The Architect/Engineer will be the sole judge of the basis of what is equivalent. 2.2 MODES OF OPERATION A. UPS module shall be designed to operate as an on-line reverse transfer system in the following modes. 1. Normal: The UPS module shall continuously supply power to the critical load via the inverter. The rectifier/battery charger shall derive power from the utility AC source and supply DC power to the inverter while simultaneously float charging the battery. a. Each UPS module shall support an equal share of the total load during normal, emergency, or recharge operation. Each UPS module shall automatically disconnect and isolate from the system load in the event of a module failure, with no interruption to the critical load. For a non-redundant system, the remaining UPS modules shall support the critical load until the defined overload period has expired, at which point the system shall transfer to the bypass source. 2. Emergency: Upon failure of the utility AC power source, the critical load shall be supplied by the inverter, which, without any interruption, shall obtain its power from the battery. There shall be no interruption to the critical load upon failure or restoration of the utility AC power source. Page 6 10/05/09

7 3. Recharge: Upon restoration of the utility AC source (prior to complete battery discharge), the rectifier/battery charger shall power the inverter and simultaneously recharge the battery. This shall be an automatic function and shall cause no interruption to the critical load. 4. Bypass: The static switch shall be used to transfer the load to the system bypass without interruption to the critical power load. This shall be accomplished by turning the inverter off. Automatic re-transfer or forward transfer of the load shall be accomplished by turning the inverter on. 5. Maintenance: A manual make before break (overlap) system maintenance bypass switch shall be provided to isolate the UPS system output and system static switch for maintenance. This shall allow each UPS module to be tested or repaired without affecting load operation. 6. Downgrade: If the battery only is to be taken out of service for maintenance, it shall be disconnected from the rectifier/battery charger and inverter by means of a battery disconnect. The UPS shall continue to function as specified herein, except for power outage protection and high transient response characteristics. 2.3 COMPONENT DESCRIPTION A. Rectifier/Battery Charger: Incoming AC power shall be converted to a regulated DC output voltage by the rectifier/battery charger. A solid state SCR phase-controlled bridge rectifier shall provide regulated DC voltage, which shall be subsequently filtered to provide power for the inverter and battery charging functions. The rectifier/battery charger shall employ input AC current limiting as well as battery charge current limiting for battery protection. The battery charging circuitry shall be capable of being set for automatic battery recharge operation, float service, manual battery charge service, and equalizing or commissioning operation. 1. AC Input Protection: The rectifier/battery charger shall be protected by means of an AC input switch. The SCRs shall be protected by fuses that shall only open in the event of catastrophic failure to prevent destruction of the semiconductors and shall not operate as an overcurrent protection system. Overloads in excess of the rectifier/battery charger's normal rating or sensing of an abnormally high DC voltage condition shall cause the AC input switch to be shunt-tripped open. INSERT PERCENTAGE BELOW. 2. Input Harmonic Current Suppression: The rectifier/battery charger shall be designed to limit the input harmonic current distortion fed back into the input source to less than [ ] percent with nominal input voltage and rated load on the UPS inverter output. 3. Power Walk-In: The rectifier/battery charger shall contain a walk-in circuit that shall cause the unit to assume the load gradually after the input voltage is applied. Currents shall increase from 20 percent to 100 percent over a 5 second period after the battery open circuit voltage has been reached. 4. Magnetization Inrush Current: The initial magnetization inrush current shall be limited to 100 percent of the rectifier/battery charger full load current. 5. Input Reactive Current: The rectifier/battery charger shall limit the reactive current to less than 15 percent of the nominal input current at no load preventing excessive reactive current from interfering with generation operation. Reactive current shall be inhibited with a 100 percent solid state system. 6. Overload Protection and Disconnection: An automatic input circuit breaker shall be provided to disconnect the rectifier/battery charger in the event of an overload or abnormally high DC bus voltage. The overload protection system shall not be activated when the rectifier/battery charger is started under any normal operating conditions. 7. Capacity: The rectifier/battery charger shall have sufficient capacity to support a fully loaded inverter and recharge the battery to 95 percent of its full capacity within 10 times the discharge period when input current limit is set at 125 percent of the normal full load rating. 8. Current Limiting: Two separate and distinct current limiting schemes shall be employed in the rectifier/battery charger. a. Input AC Current Limit: The AC input current limit shall operate such that the total DC output current of the rectifier/battery charger shall be sufficient to operate the inverter at rated load and recharge a discharged battery to 95 percent of its original capacity in Page 7 10/05/09

8 10 times the discharge period. Current demands in excess of this setting shall cause a corresponding decrease in the rectifier/battery charger output DC voltage. Input current limit shall be set at 150 percent of nominal input current. A programmable second step input current limit, allowing a further limit of the input current, shall be activated by a dry contact input. b. Battery Charging Current Limit: The battery charge current limit shall limit the DC recharge current by reducing the rectifier/battery charger DC output voltage when a set current limit set in the UPS personalization is reached. The charger may apply up to 10 percent of the nominal DC current to the battery, ensuring a recharge time equal to 10 times the discharge time at full load. A second, lower charge current limit shall be provided and shall be activated by an Owner-provided dry contact input. 9. Battery Charger Operation: The battery charger logic circuitry shall be set up to manually accommodate four modes of operation by an internal selector switch. a. Automatic: In this mode of operation, the battery charge output voltage shall be set at a charge voltage which shall be slightly higher than the normal float voltage after the UPS experiences input AC power outages of a set (selectable between 0 second and 255 seconds) duration. After 0 second to 255 seconds of operation at the charge voltage, the battery charger output voltage shall automatically revert to the normal float voltage condition. For input AC power outages of less than the selected duration, the normal float voltage level shall be maintained. b. Float Service: In this mode of operation, the battery charger output voltage shall be capable of providing a float voltage that can be adjusted to the desired value depending on the number and type of cells used in the external battery. c. Manual Charge Service: In this mode of operation, the battery charger output voltage shall be capable of being set to a voltage slightly higher than the normal float voltage setting. Normally, the charge voltage setting shall be set at the maximum float voltage setting specified by the battery manufacturer. d. Equalize/Commissioning Service: This operation shall be performed with the UPS inverter turned off. The equalize or commissioning voltage shall be capable of being set at 2.4 volts to 2.6 volts per cell for a lead acid battery. The equalize or commissioning operation shall only be performed: 1) On new batteries that are supplied dry charged with separate electrolyte. 2) On an installed battery that has significant voltage differential from cell-to-cell. 3) If specified by the battery manufacturer as part of the normal start-up sequence for commissioning the use of this battery. 10. Timed Charged Sequence: The battery charger shall be equipped with a manual and selectable timer that can be used periodically to maintain the battery in optimum condition. At the conclusion of the selected charge period, the battery charger output voltage shall revert to the normal float voltage setting. a. DC Ripple Voltage: The DC ripple voltage shall be limited to a value less than 1 percent of DC voltage at nominal UPS load. b. Low Battery Protection Circuit: When operating on battery, a low battery voltage protection circuit shall be used to monitor the DC bus voltage. The UPS inverter shall be automatically turned off when the battery voltage reaches the cut-off voltage. At a pre-set battery voltage value or two hours after the UPS has shutdown on a DC under voltage condition (battery cut-off voltage), the battery circuit breaker shall open in order to prevent excessive battery discharge. c. Temperature Compensated Charging: The battery charger shall be equipped with a temperature probe to enable temperature compensated charging. Installation of the probe shall be optional. The temperature compensated charging process shall adjust the battery float voltage to compensate for the ambient temperature using a negative temperature coefficient of 3 mv per cell per degree Celsius at nominal temperature of 25 C. d. Input Circuit Breaker: An input circuit breaker shall be provided at the input of the rectifier. The breaker shall be sized for the maximum load current of the UPS and recharging of the battery simultaneously. In the event that UPS logic control power is lost the breaker shall open via a shunt voltage trip. Page 8 10/05/09

9 e. Rectifier Fusing: The inputs of the rectifier shall be protected with fuses to prevent failures of the rectifier SCRs from affecting any other UPS components. The fusing shall only operate to prevent catastrophic failure of the SCRs and shall not be used for thermal overload protection of the current path. B. Inverter: The UPS output shall be derived from a pulse width modulated (PWM) output signal with active error gain correction, and shall utilize IGBT (insulated gate bipolar transistors) on the inverter design. The inverter shall be capable of providing the specified precise output power characteristics while operating over the battery voltage range with no deterioration of performance specifications. The inverter assembly shall be constructed of modular rack-mounted assemblies to facilitate rapid maintenance and inspection. 1. Output: The inverter output voltage and capacity shall be as specified and shall operate in accordance with the following regulation requirements: a. Static Voltage Regulation: 1) The inverter steady state output voltage shall not deviate by more than ±0.5 percent due to the following conditions: a) 0 percent to 100 percent load. b) Ambient temperature variations. c) Minimum to maximum DC bus voltage. d) Balanced load conditions. e) Loss or return of main AC input power. 2) For balanced load conditions, the inverter phase displacement shall be 120 degrees ±1 degree maximum. For 100 percent unbalanced loads, phase displacement shall be 120 degrees ±3 degrees maximum. b. Voltage Adjustments: The inverter shall have a control to manually adjust the output voltage ±5 percent from the nominal value. c. Frequency Control: The output frequency of the inverter shall be controlled by an oscillator, which shall be operated as a free-running unit when not synchronized to the bypass AC input source. The inverter shall track the synchronizing source within ±2 degrees. If the external synchronizing source deviates from the preset frequency by ±0.5 hertz, the oscillator shall automatically revert to a free-running mode of operation. 1) An Owner-provided contact closure shall be provided to (1) allow the unit to be operated continually on its internal oscillator with the static bypass transfer switch disabled or (2) for normal operation whereby the UPS inverter synchronizes to the bypass AC input source and the static bypass transfer switch is enabled. d. Frequency Regulation: The inverter free-running (non-synchronized mode of operation) steady state output frequency shall not deviate by more than ±0.1 percent from the nominal frequency due to the following conditions nor should the inverter output have any frequency transients for the system disturbances: 1) 0 percent to 100 percent load. 2) Ambient temperature variation. 3) Minimum to maximum DC bus voltage. e. Harmonic Distortion: The inverter shall provide active output filtering necessary to limit the output voltage waveform distortion (THD) to: 1) Total harmonic distortion (THD) maximum of 3 percent, and single harmonics of 1 percent maximum over the entire linear load. 2) Non-linear load capability. Output voltage total harmonic distortion (THD) shall be less than 4 percent when connected to a 100 percent non-linear load with a crest factor not to exceed 3.5. f. Dynamic Regulation: The inverter dynamic voltage regulation shall not exceed ±5 percent due when a 100 percent load step is applied or removed with 0 percent or 100 percent initial load. g. Transient Recovery: The output voltage shall return to within ±0.5 percent of the steady state value within milliseconds (one cycle). h. Overload: The inverter shall be capable of supplying currents and regulated voltage for overloads up to 125 percent of full load current for a period of 10 minutes and 150 percent current for one minute. The static bypass transfer switch shall transfer the load to bypass if Page 9 10/05/09

10 the overload exceeds the inverter's instantaneous rating of approximately 167 percent or the time periods previously stated. i. Fault Clearing: The inverter shall electronically current limit to protect against excessive overload conditions. Simultaneous to turning the inverter off, the static bypass transfer switch shall be used to transfer the load to the bypass AC input source, which shall be used to provide the necessary fault clearing current required. 1) If the bypass is not available, the inverter shall current limit at 212 percent of rated output current for 200 milliseconds. If the fault is not cleared, the inverter shall shut down if bypass is still not available. j. Inverter DC Protection: The inverter shall be protected by the following features that shall be independently adjustable for maximum system flexibility. 1) Output Protection: The inverter shall immediately current limit to protect against overloads and abnormal load conditions, which exceed the unit's rating without sustaining any damage to any part of the UPS. 2) Overcurrent Protection: The inverter shall be protected from excessive overloads, including, but not limited to, faults and reverse currents, by fast-acting fuses to prevent damage to power semiconductors. The purpose of the inverter output fusing shall be only to clear inverter failure faults. These fuses shall not clear in the event of a load short on the inverter output. 3) Surge Protection: The inverter shall have built-in protection against under voltage, overcurrent, and over-voltage surges on the output caused by load transfer between the UPS and the bypass AC input source. 4) Output Load Power Factor: The UPS inverter shall be designed to provide the rated kw specified when connected to loads with power factors ranging from 0.8 lagging to unity and shall have a minimum output power factor of ) Thermal Overload Protection: The inverter shall be provided with thermal overload protection to alarm and then protect against fan failures and high internal ambient temperature conditions. C. Static Bypass Transfer Switch: A static bypass transfer switch shall be provided as an integral part of the UPS. The control logic shall contain an automatic transfer circuit that shall sense the status of the inverter logic signals and alarm conditions to provide an uninterrupted transfer of the load to the AC bypass input source without exceeding the transient limits specified herein when a malfunction occurs in the UPS or when an external overload condition occurs. The static bypass transfer switch shall be an electronic static type switch, which shall provide a make before break or seamless overlap type transfer. The static bypass transfer switch shall be 100 percent rated for continuous duty and shall not rely on any mechanical current carrying components. 1. Uninterrupted Transfer: The static bypass transfer switch shall automatically cause the bypass source to assume the critical load without interruption after the logic senses one of the following conditions: a. Inverter overload exceeds UPS maximum output rating. b. Battery protection period expired and bypass source is available. c. Inverter failure. 2. Interrupted Transfer: If the bypass source is beyond the conditions stated below, an interrupted transfer (not less than 0.2 seconds in duration) shall be made upon detection of a fault condition. a. Bypass voltage greater than ±10 percent from the UPS rated output voltage. b. Bypass frequency greater than ±2 hertz (selectable in 0.25 hertz increments) from the UPS rated output frequency. 3. Automatic Uninterrupted Forward Transfer: The static bypass transfer switch shall automatically forward transfer, without interruption, after (1) the UPS inverter is turned on, or (2) after an instantaneous overload-induced reverse transfer has occurred and the load current returns to less than the unit's 100 percent. 4. Manual Transfer: A manual static transfer shall be initiated from the system status and control panel by turning the UPS inverter off. 5. Overload Ratings: The static bypass transfer switch shall have the following overload characteristics: Page 10 10/05/09

11 a percent of UPS system output rating for 0.1 second. b. 160 percent of UPS system output rating for 5 minutes. 2.4 SYSTEM CONTROLS AND INDICATORS A. UPS System Status and Control Panel: The control panel on the UPS shall comprise the controls and indications required to check the general status of the system. The control panel shall be designed to provide an easy and rapid overview of system status and shall not require particular training. The UPS information shall concern only the UPS on which the panel is located. System level information for parallel module systems shall be displayed on the system bypass cabinet. The control panel shall indicate: 1. Normal operation (load protected). 2. Operation with load on battery power. 3. Abnormal situations (operating problem). 4. Dangerous situations (load not protected). B. System Status and Control: 1. The UPS shall be provided with a status/control panel for each of the UPS modules. The system bypass cabinet used on parallel module systems shall also include, but shall not be limited to, a LCD display and control panel for system level monitoring. The UPS control panel shall include, but shall not be limited to, a day light visible high contrast display for status/alarm, and metering and display of operating instructions (in five languages). Approximately 50 conditions shall be monitored and displayed on a combination of LED's and the LCD on the status panel. 2. The control panel shall include, but shall not be limited to, a LED mimic diagram to indicate the power flow of the UPS module. 3. UPS operation shall be controlled via a microprocessor-controlled logic system. Operations and parameters shall be firmware-controlled and shall not require any manual adjustments or potentiometers. 4. The UPS microprocessor personalization shall be protected by a password and electronic key. C. Self-Test and Diagnostics: The logic circuitry shall include, but shall not be limited to, self-test and diagnostic circuitry such that a fault can be isolated down to the printed circuit assembly or plug-in assembly level. Every printed circuit assembly or plug-in power assembly shall be monitored. Diagnostics shall be performed via a PC through the local diagnostic port on the unit. D. Display and Controls: The UPS modules and system bypass cabinet shall be provided with a system status and a control panel that controls, monitors, and displays system operation and parameters. The UPS display shall utilize a combination of front panel steady state and flashing LEDs, a 40-character by 5-line backlit LCD display, and mechanical keypad. The display/keypad shall incorporate multiple menus (listed below) which shall provide step-by-step procedures for system operation, display metering (listed below) functions, and display of more than 40 normal and alarmed conditions (listed below). The front panel display shall be selectable in five languages (English, French, Spanish, Dutch, and Italian). 1. LED Indicator Panel: The control panel shall have an LED indicator array showing with the following LED indicators: a. Rectifier/Charger LED: 1) As follows: a) Light off; rectifier/charger off. b) Light shines green; rectifier/charger on. c) Light shines red; rectifier/charger fault. 2) In the event of a rectifier charger fault the associated alarms shall be displayed on the alphanumeric display panel: a) Input circuit breaker Q1 open. b) Protection fuse at the rectifier/charger input (FUE) blown. c) Abnormally high internal rectifier/charger temperature. d) Abnormally high battery charge current. e) Abnormally high battery voltage. Page 11 10/05/09

12 f) Fault, non-calibration or non-personalization of the electronic control board for the rectifier/charger. g) Fault on the electronic power-supply board. h) Abnormally high temperature in the harmonic filter inductor. b. Battery LED: 1) Light off; battery float charging. 2) Light flashing green; battery recharging. 3) Light shines green; load on battery power. 4) Light flashing red; low battery shutdown warning. 5) Light shines red; battery at end of back-up time and circuit breaker QF1 open, or battery fault. c. Static Bypass LED: 1) Light off; bypass AC source within specified tolerances and static bypass open. 2) Light shines green; static bypass closed. 3) Light shines red; the stored alarm indicates one or several of the following faults: a) Bypass AC source voltage or frequency outside specified tolerances. b) Static-bypass fault. c) Abnormally high internal static-bypass temperature. d) Static-bypass ventilation fault. e) Power supply fault for the static bypass control function. f) Fault on the electronic board controlling the transfer function. g) Non-calibration or non-personalization of the electronic control board for the inverter. h) Fault on the electronic power-supply board. i) Fault on monitoring the "inverter ready" response channels (parallel UPS system). d. Inverter LED: 1) Light off; inverter off. 2) Light flashing green; inverter starting, inverter on but not connected to the load. 3) Light shines green; normal inverter operation. 4) Light shines red; inverter fault, the stored alarm indicates one or several of the following faults: a) Inverter shutdown due to inverter output voltage outside specified tolerances. b) Protection fuse at the inverter output (FUS) blown. c) Abnormally high inverter output transformer temperature. d) Abnormally high inverter temperature. e) Output voltage fault (amplitude or phase) (parallel UPSs). f) Fault, non-calibration or non-personalization of the electronic control board for the inverter. g) Fault on the electronic power-supply board. e. Load LED: 1) Light off; load not supplied. 2) Light shines green; load supplied via the inverter or the bypass AC source (via the static bypass). f. Anomaly Indicator LED: This indicator light shall indicate the presence of anomalies. 2. Audible Alarm: a. The UPS shall be equipped with an audible alarm which shall sound under the following situations: 1) Load supplied by the bypass AC source. 2) Load on battery. 3) Operating problems that cause a summary alarm or major alarm condition and require operator attention. b. The alarm shall sound slowly and discontinuously for a minor problem or when the inverter is on battery power. When the alarm "low battery shutdown" is activated, the buzzer shall sound more rapidly. Finally, if the inverter shuts down, the sound shall be loud and continuous. The buzzer may be reset by pressing the alarm acknowledge button. If the buzzer is reset, a higher level alarm shall set it off again. 3. Keypad: The UPS shall be equipped with a mechanical keypad to allow the navigation of the display and operation of the UPS. The keypad shall consist of the following keys: Page 12 10/05/09

13 a. Inverter On Button: This button shall be used to start the inverter locally. b. Inverter Off Button: This button shall turn the inverter off locally. The key shall be depressed for over three seconds to turn inverter off to avoid accidental transfer to bypass. c. Menu Select Keys: These keys shall be used to select commands in the main menu and access the secondary messages. d. Validation Key: This key shall be used to validate the Owner s choice once a menu item is selected. e. Menu Settings Key: This key shall be used to access the main menu: display language, display contrast setting, sound level of the buzzer, lamp test, date and time settings, inverse video and event log. f. Voltage Key: This key shall be used to access voltage measurements: 1) Normal AC source phase-to-phase voltages. 2) Bypass AC source phase-to-phase and phase-to-neutral voltages. 3) Load phase-to-phase and phase-to-neutral voltages. g. Current Key: This key shall be used to access current measurements: 1) Normal AC source, bypass AC source, and load currents. 2) Percent load. 3) Load crest factor. h. Hertz Power/Frequency Key: This key shall be used to access other measurements: 1) Normal AC source, bypass AC source, and inverter frequencies. 2) Level of active and apparent power drawn by the load. 3) Load power factor. 4) Inverter load level (percent). i. Primary Message Key: This key shall be used to access the primary messages. j. Battery Key: This key shall be used to access battery measurements. 1) Battery voltage (or the DC voltage on frequency converters without a battery). 2) Battery current (charge or discharge). 3) Battery temperature. 4) Available battery back-up time. 5) Inverter load level (percent). k. Forced Transfer Key: This key shall be used to voluntarily transfer the load to the inverter or from the inverter to the static bypass (return transfer). Transfer and return transfer shall be carried out only following confirmation requested by the system display and a warning as to the risk of an interruption in the supply of power to the load. l. Alarm Reset Key: This key shall be used to reset stored alarms. The system shall accept resetting only when alarms have been cleared. m. Buzzer Reset Key: This key shall be used to stop the buzzer. However, new alarms shall set the buzzer off again. 4. LCD Display: The LCD display shall continuously indicate the system operating status as well as list primary and secondary messages relating to UPS status and operation: a. Primary Messages: 1) As follows: a) Load Protected/On-Line Mode: This shall be the normal display when there are no alarms or problems and the load is correctly supplied by the inverter, in on-line mode. b) Load Protected/Parallel On-Line Mode: This shall be the normal display when there are no alarms or problems and the load is correctly supplied by the inverter in a parallel UPS system, in on-line mode. c) Load Not Protected/On-Line Mode: This display shall indicate that the load is not supplied by the inverter, or that there is no battery back-up. The buzzer shall sound continuously. d) Load Not Protected/Parallel On-Line Mode: Situation shall be identical to that in the previous screen, but for parallel UPS systems. e) Load Protected/Battery Discharging: Remaining battery time (minutes) equals XX percent kw used equals XXX. (i) The load shall be supplied by the inverter, but the normal AC source shall be down or outside tolerances and power shall be supplied by the battery. Page 13 10/05/09

14 This message shall indicate the remaining battery time in minutes prior to inverter shutdown and the percent load. The battery time calculation shall take into account: (a) The percentage of full rated load power currently being drawn. (b) The type of battery. (c) Battery temperature. (d) Battery age. 2) The buzzer shall sound slowly and discontinuously during: a) Load Protected/Low Battery Shutdown Warning: Remaining battery time (minutes) equals XX percent kw used equals XXX. This message shall replace the preceding if the power outage persists and the warning level has been reached. The Owner will be warned that the battery is about to shut down. The buzzer shall sound rapidly and discontinuously. b. Secondary Messages: 1) Load On Mains 2: The load has been transferred to the bypass AC source (M2) and is no longer protected (only in on-line mode). The buzzer shall sound continuously. 2) Mains 2 Outside Tolerances/Transfer Disabled/Check Mains 2: The bypass AC source (M2) frequency or voltage is outside tolerances and the inverter is unable to synchronize. Transfer of the load from the inverter to the bypass AC source (M2) or vice-versa shall result in an interruption of the supply of power to the load. The buzzer shall sound slowly and discontinuously. 3) Battery Over-Temperature, Check Ventilation: The battery temperature is outside tolerances. The buzzer shall sound slowly and discontinuously. 4) Battery Room Ventilation/Fault/Check Ventilation: A fault requiring servicing has occurred in the battery room ventilation system. The rectifier/charger shall shut down after a 30 second time delay. The Owner must take steps to re-establish correct operation of the ventilation system. This message shall also signal an abnormally high temperature in the filter inductor. The buzzer shall sound slowly and discontinuously. 5) Mains 1 Outside Tolerances/Check Mains 1: The normal AC source (M1) frequency or voltage is outside specified tolerances and the rectifier/charger has shut down. The inverter shall be on battery power. 6) Mains 1 Input Switch Q1 is Open: The normal AC input (M1) switch Q1 is open. It shall be closed for rectifier/charger start-up. The buzzer shall sound slowly and discontinuously. 7) Internal UPS Fault/Load Transfer Fault/Call Maintenance: A fault has occurred in the static switch that transfers the load between the inverter and the bypass AC source (M2). Servicing by the after-sales support department will be required. The buzzer shall sound continuously. 8) Overload/Rated Current Per Phase = XXX A/Check Load Level: This display shall inform the Owner that load current is greater than rated current, and shall give the value. The buzzer shall sound continuously. 9) UPS Shutdown Due to an Overload/Check Load Level: This message shall follow the preceding when the overload persists. The UPS shall shut down and the buzzer shall sound continuously. 10) Inverter Not in Phase With/Mains 2/Transfer Disabled/Check Mains 2: The phase difference between the inverter and the bypass AC source (M2) is outside tolerances. Transfer of the load between the inverter and the bypass AC source (M2) shall result in an interruption in the supply of power to the load. For parallel UPSs, this message shall be interpreted as meaning the phase difference between the inverter for which the message is displayed and the other inverter is outside tolerances. 11) UPS Shutdown by an External Command: The inverter has received a command to shut down. The command shall be in the form of a signal received from the remote indications relay board. 12) Mains 2 Input Switch Q4S is Open: The bypass AC source (M2) input switch Q4S is open, i.e., back-up power for the load via the bypass AC source (M2) is not available. 13) Inverter Output Switch Q5N is Open: Inverter output switch Q5N is open, i.e., the load cannot be supplied via the inverter. Page 14 10/05/09

15 14) Bypass Switch Q3BP is Closed: Maintenance bypass switch Q3BP is closed. The system shall be in maintenance configuration and the load shall be supplied by the bypass AC source. 15) Static Switch (M2) Off Due to an Overload: The load is no longer supplied by the bypass AC source (M2), due to an extended overload. The buzzer shall sound continuously. 16) Battery Charging: The battery is currently being recharged. 17) Battery at End of Service Life Call Maintenance: The battery is nearing the end of its estimated service life. This information shall be based on average service life calculations since its initial installation. The buzzer shall sound slowly and discontinuously. 18) Emergency Off: a) This message shall be displayed when the external emergency off pushbutton is pressed. The result shall be: (i) Shutdown of the inverter. (ii) Shutdown of the rectifier/charger. (iii) Opening of the battery circuit breaker. (iv) Blocking of the static bypass. (v) Opening of the backfeed protection contactor (M2). (vi) Opening of the Q1 circuit breaker (M1). (vii) Activation of a relay contact on the remote indications relay board. b) Servicing by the after-sales support department will be required. The buzzer shall sound discontinuously. 19) The Battery C.B. QF1 is Open/Check the Installation: Battery circuit breaker QF1 is open. The load shall no longer be protected because battery power is no longer available in the event of a normal AC source outage. The buzzer shall sound continuously. 20) Low Battery Shutdown: The inverter has shut down at the end of battery power. The buzzer shall sound continuously. 21) Internal UPS Fault/Inverter Fault/Call Maintenance: A fault has occurred in the inverter. Servicing by the after-sales support department will be required. The buzzer shall sound continuously. 22) Internal UPS Fault/Charger Fault/Call Maintenance: A fault has occurred in the rectifier/charger. Servicing by the after-sales support department will be required. The buzzer shall sound slowly and discontinuously. 23) Forced Transfer to Inverter Requested, Power to Load May be Interrupted, Confirm Your Request With Key: The requested transfer to the inverter may provoke an interruption in the supply of power to the load if Mains 2 characteristics are not within the specified tolerances. 24) The Number of UPS Ready is Insufficient, Load Transfer in Stand By: This message may be displayed in non-redundant, parallel UPS systems, when the number of ready inverters in not sufficient to supply the load. 25) Inverter Not Connected: This message may be displayed in parallel UPS systems, when the inverter is not connected to the load. 26) Parallel UPS, Forced Transfer Inhibited: This message shall be displayed when forced connection is requested on a parallel UPS system for a power extension. 27) Internal UPS Fault, Self-Test Fault: Communication between the system and the display is faulty. The buzzer shall sound slowly and discontinuously. 28) Forced Transfer to M2 Requested, Power to Load May be Interrupted, Confirm Your Request With Key: This message shall be displayed following pressing of the forced transfer key, when the load is supplied via the inverter. 29) UPS Supplied by a Generator Set: This message shall inform the Owner that the UPS has received the order to limit the current drawn by the rectifier/charger. It shall be displayed when the corresponding signal is transmitted by the remote indications board which shall be configured for this function. 30) Ventilation Fault: This message shall be displayed when a fault occurs on a fan. Page 15 10/05/09

16 c. Power Measurements: The UPS display shall indicate all of the following power measurements for the specific UPS module. System power measurements shall be displayed on the system bypass cabinet display. 1) AC Rectifier Input Source (Utility 1): a) Phase-to-phase voltages. b) Currents of the three phases. c) Frequency. 2) AC Bypass Input Source (Utility 2): a) Phase-to-neutral voltage. b) Phase-to-phase voltages. c) Frequency. d) Currents of the three phases. 3) Battery: a) Voltage. b) Charge or discharge current. c) Remaining battery time (for the specific UPS module). d) Battery temperature. 4) Output Load: a) Phase-to-neutral voltage. b) Phase-to-phase voltages. c) Currents of the three phases. d) Frequency. e) Active and apparent power. f) Frequency. d. Event Logging and Time-Stamping: 1) The UPS shall be equipped with a time-stamped event log that shall: a) Log UPS events and alarms with a date and time stamp. b) Allow referencing of the last 500 alarm/events that occurred on the UPS module. c) Provide general statistical data on UPS operation. d) Provide measurement records for a number of physical values concerning system operation. 2) The time stamping information shall be accessed via the UPS keypad and display (standard equipment). This information shall also be accessible via the RS-232/RS-485 communications board. 3) The event/alarm log shall also provide the following system parameters: a) Total Back-Up Time (Hours): This shall be the total time of operation on battery power since initial start-up of the UPS. It shall be expressed in hours. b) Total Time On Static Switch (Hours): This shall be the total time of operation on the static switch since initial start-up of the UPS. It shall be expressed in hours. c) Total Time On UPS (Days): This shall be the total time that the load has been supplied by the UPS since initial start-up. It shall be expressed in days. d) Total Time With TBatt Greater Than 77 F (25 C) (Hours): This shall be the total time of operation with the battery temperature greater than 77 F (25 C) since initial start-up of the UPS. It shall be expressed in hours. e) Elapsed Back-Up Time (Minutes): This shall be the total time of operation on battery power since the last reset. It shall be expressed in minutes. f) Number of Back-Ups: This shall be the number of times the load was supplied by the UPS from battery power since the last reset. g) Number of Back-Ups Less Than 1 Minute: This shall be the number of times the load was supplied by the UPS from battery power for less than one minute, since the last reset. h) 1 Minute Less Than Number of Back-Ups Less Than 3 Minutes: This shall be the number of times the load was supplied by the UPS from battery power for more than one minute and less than three minutes, since the last reset. i) Number of Back-Ups Greater Than 3 Minutes: This shall be the number of times the load was supplied by the UPS from battery power for more than three minutes, since the last reset. Page 16 10/05/09

17 j) Number of Overloads Less Than 5 Seconds: This shall be the number of times the UPS was overloaded (output current greater than In) for less than five seconds, since the last reset. k) Number of Overloads Greater Than 5 Seconds: This shall be the number of times the UPS was overloaded (output current greater than In) for more than five seconds, since the last reset. l) Number of Times TBatt. Greater Than 77 F (25 C): This shall be the number of times the battery temperature was measured at over 77 F (25 C), since the last reset. e. Operating Log: The UPS shall maintain an operating log that shall indicate the last 30 measurements recorded for the given parameter in chronological order. Measurements shall be taken every 30 days. The displayed measurements shall be instantaneous values. The following parameters shall be tracked for the operating log: 1) The battery capacity shall be the value measured by the UPS microprocessor. It shall be expressed in ampere-hours. This value shall change over time depending on the parameters of the battery itself and its environment. This measurement shall be used to check that the battery is capable of supplying the rated power in the event of a utility outage. 2) The back-up time shall be the value calculated by the UPS microprocessor on the basis of measurements carried out on the battery. It shall be expressed in minutes. The calculation shall use the percent load and the battery charge status at the time of the measurement. 3) The load level shall be the ratio between the power supplied by the UPS to the load at the time of the measurement and the rated output of the UPS. It shall be expressed as a percentage. f. Automated Battery Testing: The UPS shall be equipped with a battery management system that shall log battery environmental parameters, cycling history, and shall monitor general battery health. The system shall also perform battery performance tests at predetermined intervals to assess battery health. 1) The battery monitoring system shall be displayed on the LCD screen. When the battery test button is depressed it shall indicate battery charge status and the estimated remaining service life of the battery. The Owner shall be able to select the option of manually or automatically (at Owner predetermined intervals) initiating a battery test. Following the completion of a battery test, the system shall indicate a positive or negative test result prompting further analysis of the battery bank. In the event that the diagnostic system determines that it is dangerous to continue testing the batteries the test shall be interrupted and the operator notified to check the appropriate alarm. g. Automatic Diagnostics: The UPS shall be equipped with a continuously operating auto-diagnostic system that shall evaluate the operating condition of the UPS and all the sub components. In the event that the diagnostics system detects a problem, the system shall sound an audible alarm to alert the operator. 5. Dry Contacts: The UPS shall incorporate a dry contact relay array along with three communications card ports for use with the optional communication card offerings. Alarm dry contacts shall be available for external connection. Each alarm shall include, but shall not be limited to, Form C contacts (configurable as normally open or closed) and rated for 5 amperes at 250 volts. a. Inputs: 1) Emergency Off: A normally closed contact shall cause shutdown of the inverter and the rectifier/charger, opening of the battery circuit breaker, blocking of the static bypass and activation of a relay contact on the media contacts 11 inch board. 2) Battery Room Ventilation Fault: A normally open contact shall cause shutdown of the rectifier/charger. 3) Battery Circuit Breaker QF1 Closed: A normally open contact shall prevent inverter start-up if the circuit breaker is open. Page 17 10/05/09

18 4) Battery Temperature: A PC board, placed near the battery, shall supply information on the battery temperature, thus enabling the rectifier/charger to regulate the battery voltage. 5) Auxiliary Signals: Depending on the selected settings, these signals may be used to provoke: a) Forced shutdown of the inverter (whatever the status of the bypass AC source). b) Protected shutdown of the inverter (load transfer to the bypass AC source). c) Limiting of the current drawn by the rectifier/charger (programmable value) when supplied by an engine generator set with an insufficient power rating. The additional power required by the inverter shall be supplied by the battery which discharges. d) Limiting of the battery charge current (programmable value) if the normal AC source is replaced by an engine generator set with an insufficient power rating. b. Outputs: 1) An auxiliary 24 volt power supply, isolated and backed up, shall be used to supply: a) The undervoltage release of the battery circuit breaker(s) QF1. b) The board that measures the temperature in the battery room. 2) Low battery warning signal (volt-free changeover contact) indicating that battery time is about to run out. The warning threshold may be personalized. 3) Load on UPS signal (volt-free changeover contact) indicating that the load is supplied by the inverter. For a single-ups unit, one volt-free changeover contact may be used to indicate that the load is supplied by the bypass AC source. 4) Load on battery power signal (volt-free changeover contact) indicating that the inverter is supplied by the battery in the following cases: a) Normal AC source outage or voltage drop. b) Rectifier/charger shutdown. c) Rectifier/charger current limiting. This signal, which may be used to initiate process saving and shutdown procedures, shall be time-delayed 30 seconds to avoid unnecessary operations following micro-breaks. 5) Maintenance position signal (volt-free changeover contact) indicating that: a) Maintenance bypass switch Q3BP is closed. b) Bypass AC source input switch Q4S is open. c) Inverter output switch Q5N is open. d) Battery circuit breaker QF1 is open. 6) Signal to open battery circuit breaker(s) QF1 in the event the emergency off button is pressed or to avoid an excessive battery discharge (lasting more than three times the rated back-up time plus two hours). 7) Repo contact (volt-free changeover contact) used to trip switching devices in the event of an emergency shutdown. 8) General alarm information (volt-free changeover contact) which shall include, but shall not be limited to, the following: a) Internal faults. b) Information on temperatures outside tolerances in the battery room (optional). c) Overload information (>In). d) Static-switch ventilation and power-supply faults. 6. RS-232/RS-485 Serial Communications: A standard serial communication port shall be provided to remotely monitor the UPS. Alarms, messages, and standard measurements shall be available on the local port. The port shall be configurable for RS-232 or RS-485 communications. The port shall use an open J-BUS (subset of ModBus) protocol with all UPS status information (86 parameters) available remotely. 7. Synchronization Control Circuitry: The synchronization control circuitry shall provide a frequency and phase reference for the UPS modules. The frequency and phase reference shall be determined by the bypass AC input source when certain conditions are satisfied or by an internal quartz crystal oscillator contained in the UPS when the bypass AC input source is outside the specified limits. a. Synchronized to Bypass AC Input: Page 18 10/05/09

19 1) The synchronization control circuitry shall monitor the bypass AC input source and provide a frequency reference to the UPS modules when the bypass AC input source meets the following criteria: a) Nominal voltage ±10 percent. b) Nominal frequency ±0.5 hertz. c) Bypass AC input to UPS inverter output phase angle difference of ±2 degrees. 2) When the previous conditions are satisfied, an uninterrupted forward or reverse transfer of the static bypass transfer switch shall be capable of being made. b. Non-Synchronized To Bypass AC Input: If the conditions that noted in Synchronized to Bypass AC Input sub-subparagraph above are not satisfied, the frequency reference provided to the UPS modules shall be determined by the internal oscillator contained in the UPS module. The non-synchronized frequency source shall be the nominal frequency ±0.1 percent. During this mode of operation, an uninterrupted transfer shall not be made. If a system overload or module fault occurs during this mode of operation, an interrupted transfer having a minimum interrupt time of 200 milliseconds shall be made when transferring the load to the bypass AC input source. 2.5 MECHANICAL DESIGN AND VENTILATION A. Enclosure: The UPS shall be housed in a freestanding enclosure with a dead front construction. The back of the UPS shall be capable of being mounted as close to a wall as practical. The UPS cabinet shall be designed for top cable entry with optional bottom entry cabinets available. Copper wire or bus shall be exclusively for internal electrical connections excluding heat sink subassemblies. 1. Dimensions: The core UPS module enclosure dimensions shall not exceed 82 inches (2083 mm) high by 122 inches (3099 mm) wide by 39 inches (991 mm) deep. Installation drawings shall indicate specific module dimensions. 2. Access: Front access only shall be required for installation and maintenance. Power connections and component removal shall be possible from the front only. 3. Color: The cabinet shall be painted an off-white (RAL 9002) color. B. Ventilation: Forced air-cooling shall be provided to ensure that components are operated within their specified temperature ratings. Power component modules shall be cooled by redundant fans located directly above critical power components ensuring that the cooling air path is not obstructed. Internal air baffles shall carry heated air from large magnetic components directly outside of the UPS to minimize the interior cabinet temperature. Redundant fans shall also be located above the air baffles. Fan failures or a thermal overload shall be annunciated by a contact closure. Air inlets shall be provided from the front of the UPS enclosure. Air exhaust shall be from the top portion of the unit. Air filters on the inlets shall be provided as standard and shall be readily replaceable from the front of the unit without the requirement of opening the UPS module doors. 1. Airflow: Airflow shall be up to 2500 cfm per UPS module. 2. Heat Rejection: Maximum heat rejection per UPS module shall be 48,050 BTUs per hour (480 volts/480 volts). 2.6 BATTERY A. Battery Disconnect Breaker: Each UPS module shall be furnished with a 2000 ampere battery disconnect breaker mounted in a self-standing NEMA 1 rated enclosure. The battery disconnect breaker shall allow complete interruption of DC current to the UPS module. The battery breaker shall automatically open in the event of the battery voltage falling to the maximum allowable discharge voltage, activating the emergency power off (EPO/REPO) system or when activated to open by other Owner-specified controlled systems. B. Battery System: Battery systems shall be provided in accordance with the appended manufacturer s specifications. Page 19 10/05/09

20 C. Battery Type: Batteries shall be sealed maintenance-free high rate discharge, lead acid cells consisting of 240 cells per string. D. DC Cutoff Voltage: Battery end voltage shall not exceed 1.67 volts per cell. 2.7 ACCESSORIES A. Battery Cabinet: Matching battery cabinets shall be available in both adjacent or stand-alone versions. Power wiring and control cables for adjacent versions shall be included. Battery disconnect shall be provided. B. Remote Alarm Status Panel (RASP): A wall-mounted panel, 17.5 inches (445 mm) high by 12 inches (305 mm) wide by 4 inches (102 mm) deep, with twelve indicating LED's shall display UPS status and any active alarms. The alarms shall be a latching type, such that if an alarm is triggered, the LED shall stay on (latch) even if the alarm is corrected. This feature shall provide the operator the chance to verify the occurrence of the alarm. 1. The parameters monitored and controls provided on the RASP include, but shall not be limited to, the following: a. UPS on-line (green LED). b. UPS on battery (yellow LED). c. Load on bypass (yellow LED). d. UPS summary alarm (red LED). e. Low battery shutdown. 2. The RASP shall also be equipped with: a. Alarm test/reset pushbutton (white LED) to reset the latching alarm. b. Audible alarm for alarm annunciation. c. Audible alarm reset pushbutton (white LED) to silence the audible alarm. 3. The RASP door shall be equipped with a key lock. The recommended maximum distance from the UPS module shall be 500 feet (152 m). C. Remote Summary Alarm Panel (RSAP): A wall-mounted panel with five indicating LED's shall display UPS status and any active alarms. The alarms shall be a latching type, such that if an alarm is triggered, the LED shall stay on (latch) even if the alarm is corrected. This feature shall provide the operator the chance to verify the occurrence of the alarm. 1. The parameters monitored and controls provided on the RSAP include, but shall not be limited to, the following: a. UPS summary alarm (red LED). b. UPS on battery (yellow LED). 2. The RSAP shall also be equipped with: a. Alarm test/reset pushbutton (white LED) to reset the latching alarm. b. Audible alarm for alarm annunciation. c. Audible alarm reset pushbutton (white LED) to silence the audible alarm. 3. The RSAP door shall be equipped with a key lock. The recommended maximum distance from the UPS module shall be 500 feet (152 m). D. Output Distribution Circuit Breaker(s): Output distribution circuit breakers may be provided in an additional auxiliary cabinet. Each of the distribution circuit breakers shall include, but shall not be limited to, auxiliary contacts and shunt trip. E. Communication and Software Options: The UPS module shall be able to accommodate up to three of the following communications options: 1. RS-232 U-Talk or Dry Contacts (66060): The U-Talk protocol shall be used with Solution-Pac 2 for remote monitoring or graceful shutdown for most popular file servers. The dry contacts shall close on predefined conditions to monitor UPS operations. This shall require one communication slot and optional cables. a. The dry contacts shall close on the conditions listed below, but shall be Owner-programmable to close on preset thresholds of other Owner UPS parameters: Page 20 10/05/09

21 1) UPS on-line. 2) Load on bypass. 3) UPS on battery. 4) Low battery warning. 5) Battery fault. 6) General alarm. b. Two dry contact inputs shall also be provided to turn the UPS inverter on and off remotely upon closure of the contacts. This feature may also be disabled if required. 2. RS-232 or RS-485 JBus/Modbus Card (66061): The U-Talk protocol shall be used with Solution-Pac 2 for remote monitoring or graceful shutdown for most popular file servers. The JBus protocol shall be used with third party building management systems (BMS) to monitor detailed three-phase information. This shall require one communication slot and optional cables. 3. High Voltage 6 Alarm Relays Card (66069): Six normally open dry contact outputs rated at 2.0 amperes (250 volts DC/30 volts DC) shall be available to monitor UPS operation. a. The dry contacts shall close on the conditions listed below, but shall be Owner-programmable to close on preset thresholds of other Owner UPS parameters: 1) UPS on-line. 2) Load on bypass. 3) UPS on battery. 4) Low battery warning. 5) Battery fault. 6) General alarm. b. Two dry contact inputs shall also be provided to turn the UPS inverter on and off remotely upon closure of the contacts. This feature may also be disabled if required. 4. Network Management Card (66074): The network management card (NMC) shall provide a web interface, SNMP (simple network management protocol), logging, and capabilities. The NMC shall be used for remote monitoring or graceful shutdown for most popular file servers. 5. IBM AS/400 Volt-Free Contact/Remote Power Off Card (66068): The UPS shall interface with an IBM AS400-UPS signal interface providing the following signals via dry contacts: a. Load on battery. b. Load on bypass. c. Low battery shutdown warning. d. Load powered by UPS. 6. Multi-Slot Communications Card Expander (66071): The Multi-Slot shall provide three additional communication slots. The U-Talk Acquisition Card (66063) shall be included. F. Network Based Power Management Software: 1. Solution-Pac 2 software shall facilitate the management of the UPS over any point in a wide area network (WAN) or local area network (LAN). The software shall use a distributed, TCP/IP based architecture and shall be SNMP manageable. To reduce the volume of network traffic, the software shall employ trap reception acknowledgement. The software shall be capable of graceful server shutdown of individual or multiple servers from any point on the network for up to 50 servers per card. 2. Enterprise power manager software shall facilitate the management of the UPS and servers over any point in a wide area network (WAN) or local area network (LAN). The software shall provide an overall, consolidated view of the main operating parameters of all power devices on the network. The information shall be accessible from any workstation using a standard web browser. The software shall use secure sockets layer (SSL) and several levels of password protection for complete security. MGE network device shall be required. G. Critical Bus Synchronization: 1. Critical bus synchronization (CBS) module shall be required to keep the outputs of all three separate and independent UPS systems in sync during operating conditions including when: a. Bypass power of one or both UPS systems is not available. b. Bypass power is available but they are out-of-sync. c. UPS systems are operating on battery. Page 21 10/05/09

22 2. The CBS shall be a parallel connected circuit that shall monitor the bypass and system output of UPS systems and it shall activate a sync signal under pre-determined and specific conditions. The CBS shall not effect the standard and specified performance of the UPS system detailed in this Section. 3. The CBS shall be a wall-mounted enclosure and shall contain the following indications: a. Sys 1, 2 Bypass Avail - Green Light: When lit, it shall indicate that the bypass power to UPS system #1 is available and it is within allowed tolerance (nominal voltage ±10 percent). b. Bypass 1, 2 In Sync - Green Light: When lit, it shall indicate that the bypass sources of UPS system #1 and UPS system #2 are in sync and within the selected and programmed phase angle. c. Systems In Sync - Green Light: When lit, it shall indicate that the UPS outputs of both systems (1 and 2) are in sync and within the allowed limits. This indication shall be derived from comparing the output of the second UPS system to the output of the selected master system. d. Sync Ckt Activated - Amber Light: When lit, it shall indicate that the CBS is activated and the UPS systems outputs are no longer tracking their respective bypasses but instead they are synchronized to the selected master. e. Sync Ckt Inhibited - Red Light: When lit, it shall indicate that the CBS is not active due to one or more of the following conditions: 1) Sync mode select is in the off position. 2) One of the UPS systems is on maintenance bypass. 3) All systems are on static bypass. f. Sync Mode Select (Off or Auto) - Selector Switch: 1) Off: When selected, the CBS shall be inactive and out of operation. The Sync Ckt Inhibited light shall be lit. 2) Auto: When selected (normal mode of operation), the CBS shall be in operation and should the bypass inputs go out of the sync, the CBS shall be activated. g. Master Select (Sys 1or Sys 2): Selector switch. h. Lamp Test: When pressed it shall turn on all lights as a functional test. 4. The CBS shall operate under the following conditions: a. Normal Operation: Under normal operation, both UPS systems shall be in full operation feeding their respective loads. Their bypass power shall be available and they shall be in sync. The outputs of both systems shall be in sync and the CBS shall be in auto mode but not active. b. Bypass Power Failure: Should the bypass power fail, the CBS shall automatically activate (Sync Ckt Activated light shall be lit) after a preset time delay and the outputs of the UPS systems shall remain in sync. The signal from the CBS shall be sent to slave and master UPS systems inhibiting them from manual or automatic transfer to bypass. The master UPS system shall also be inhibited from transferring to bypass. 1) This condition shall remain until the bypass power is re-applied. Upon application of bypass power, the selected master UPS system shall automatically track its bypass source. The slave UPS system shall continue to track the selected master UPS system. When the bypass sources are in sync, the CBS shall de-activate after a preset time delay and the UPS system shall track its respective bypass source. De-activating the CBS shall also de-activate the transfer to bypass inhibit signal. Normal operation shall resume. c. Bypass Power of One UPS System Failure: Should the bypass power fail on one UPS system, the CBS shall automatically activate (Sync Ckt Activated light shall be lit) after a preset time delay and the outputs of the two UPS systems shall remain in sync. A signal from the CBS shall be sent to the UPS system with the failed bypass source inhibiting it from manual or automatic transfer to bypass. 1) This condition shall remain until the bypass power is re-applied. When the bypass sources are in sync, the CBS shall de-activate after a preset time delay and each UPS system shall track its respective bypass source. De-activating the CBS shall also de-activate the transfer to bypass inhibit signal. Normal operation shall resume. Page 22 10/05/09

23 d. Bypass Power Available But Out-of-Sync: If the bypass power on UPS systems is available but the UPSs are out-of-sync or outside the selected and preset phase angle, the CBS shall automatically activate (Sync Ckt Activated light shall be lit). 1) This condition shall remain until the bypass sources are in sync, the CBS shall de-activate after a preset time delay and each UPS system shall track its respective bypass source. De-activating the CBS shall also de-activate the transfer to bypass inhibit signal. Normal operation shall resume. e. UPS on Bypass or Maintenance Bypass: 1) Should one UPS system transfer to bypass, this system shall become the master regardless of the position of the master select switch. The systems shall synchronize to the master system after the preset time delay should the UPS outputs go out-of-sync. 2) Should one UPS system transfer to maintenance bypass, the CBS shall be inhibited (Sync Ckt Inhibited light shall be lit) and each UPS system shall synchronize to its own bypass source. H. System Bypass Cabinet: The system bypass cabinet shall provide a manual two breaker operated external maintenance bypass with keyed interlocks for safe operation. The system bypass shall be capable of routing the utility or bypass source completely around the UPS modules, effectively isolating the UPS modules. The bussing shall accommodate landing space for up to four UPS modules and input and out sources of up to 1200 ampere. 1. The system bypass cabinet shall be outfitted with instrumentation to display the combined system level input power from the utility/bypass source and output power from the UPS module system. In the event that the power characteristics of either source or load fall out of tolerance, the monitoring system shall provide an audible and visible alarm which shall also be accompanied by the activation of a dry contact relay. 2. The system bypass cabinet shall include, but shall not be limited to, a standard monitor system for metering and display of the system level input/utility and output/ps power. The monitor shall display the voltage, current, kva, kw, and frequency and other parameters defined below. Measured values shall be displayed on a large format LCD display mounted on the front of cabinet. The meter shall also be equipped with LED alarm status indication. Metered values shall be in "true RMS" values with 0.35 percent accuracy. Values and alarms shall be accessible via the monitoring systems RS-232 and RS-485 serial ports using a standard ModBus protocol. The monitor shall include, but shall not be limited to, a keypad allowing for the viewing of different selected values. The monitor shall display the following values and alarm conditions via the LCD display: a. Measured values shall be as follows: 1) kwh energy consumption. 2) kw real power. 3) kvar reactive power. 4) kva apparent power. 5) Power factor total. 6) Voltage, L-L, average of three phases. 7) Voltage, L-N, average of three phases. 8) Current, average of three phases. 9) kw real power, phase A, B, C. 10) Power factor, phase A, B, C. 11) Line-to-line voltage, phase A-B. 12) Line-to-line voltage, phase B-C. 13) Line-to-line voltage, phase A-C. 14) Line-to-neutral voltage, phase A-N. 15) Line-to-neutral voltage, phase B-N. 16) Line-to-neutral voltage, phase C-N. 17) Current, phase A, B, C. 18) kw average. 19) kw minimum. 20) Frequency (measured from phase A). b. Alarmed parameters shall be as follows: Page 23 10/05/09

24 1) Over voltage. 2) Under voltage. 3) Over current. 4) Under current. 5) Over kva. 6) Under kva. 7) Phase loss A. 8) Phase loss B. 9) Phase loss C. PART 3 - EXECUTION 3.1 EXAMINATION A. Verification of Conditions: Examine areas and conditions under which the work is to be installed, and notify the Contractor in writing, with a copy to the Owner and the Architect/Engineer, of any conditions detrimental to the proper and timely completion of the work. Do not proceed with the work until unsatisfactory conditions have been corrected. 1. Beginning of the work shall indicate acceptance of the areas and conditions as satisfactory by the Installer. 3.2 INSTALLATION A. Preparation and installation shall be in accordance with reviewed product data, final shop drawings, manufacturer s written recommendations, and as indicated on the Drawings. 3.3 FIELD QUALITY CONTROL A. General: See [Section INSPECTING AND TESTING SERVICES] [Section INSPECTING AND TESTING SERVICES]. B. Field Service Engineer Qualifications: The manufacturer shall employ a 7 x 24 nationwide (international where applicable) field service organization with rapid access to all regions of the nation. The responding service professionals shall be factory-trained engineers with an accredited and proven competence to service three-phase UPS. C. Spare Parts: Field Engineers shall have immediate access to recommended spare parts with additional parts storage located in regional depots. Additional spare parts shall be accessible on a 7 x 24 basis from the national depot and shall be expedited on a next available flight basis or via direct courier (whichever mode is quickest). 3.4 DEMONSTRATION A. Provide the services of a factory-authorized service representative of the manufacturer to provide start-up service and to demonstrate and train the Owner s personnel. 1. Test and adjust controls and safeties. Replace damaged or malfunctioning controls and equipment. 2. Train the Owner s maintenance personnel on procedures and schedules related to start-up and shutdown, troubleshooting, servicing, and preventive maintenance. 3. Review data in operation and maintenance manuals with the Owner s personnel. 4. Schedule training with the Owner, through the Architect/Engineer, with at least seven day s advanced notice. B. The manufacturer shall make available to the Owner various levels of training ranging from basic UPS operation to UPS maintenance. Page 24 10/05/09

25 3.5 PROTECTION A. Provide final protection and maintain conditions in a manner acceptable to the Installer, that shall ensure that the solid state UPS shall be without damage at time of Substantial Completion. END OF SECTION Page 25 10/05/09

26 Page 26 10/05/09

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