StacoDVR-5 60kVA to 6000kVA

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Abigayle Berry
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StacoDVR- 5: 3- ph. Voltage Regulator Why choose a voltage regulator The availability of steady voltage supply is critical for a number of situations involving voltage sensitive equipment.

is very often the key for ensuring efficiency and reliability to the final user.

Of course, all this means increased costs. The voltage regulator has proved to be an efficient solution in order to prevent from potentially dangerous situation due to input voltage instability.

ground faults, etc.) and surges (generated by disconnection of large loads, increased voltage at the generating plant, atmospheric events, etc.). The duration of such phenomena depends on their cause and is not easily predictable.

1 StacoDVR- 5: 3- ph. Voltage Regulator Why choose a voltage regulator The availability of steady voltage supply is critical for a number of situations involving voltage sensitive equipment. Whether because of the unreliability of the energy distribution or the presence of electronically controlled machinery and systems, high quality voltage supply regardless of the incoming fluctuation is very often the key for ensuring efficiency and reliability to the final user. Disrupted production, loss of data security failure, machinery faults, inaccurate information and domestic inconvenience are only a few examples of possible problems caused by unstable supply. Of course, all this means increased costs. The voltage regulator has proved to be an efficient solution in order to prevent from potentially dangerous situation due to input voltage instability. A voltage regulator is a device able to respond to changes in the voltage level on the input line caused by sags (due to undersized distribution lines, connection of large loads to the network, ground faults, etc.) and surges (generated by disconnection of large loads, increased voltage at the generating plant, atmospheric events, etc.). The duration of such phenomena depends on their cause and is not easily predictable. Sags are generally more common especially where the distribution is not efficient. The result of the regulator operation is a steady output voltage for the load. Applications Voltage regulators are suitable for a wide range of applications. StacoDVR Characteristics The regulators are designed and built in compliance with the European Directives concerning CE marking 2006/95/EEC (Low Voltage Directive) and 2004/EEC (Electromagnetic Compatibility Directive) and can be used in A and B environments according to EN /- 2. StacoDVR- 5 regulators use columnar voltage regulators which and cover the range from, allowing for the choice of several input voltage variation percentages within a broad range (from +30% up to - 45%). The regulation is performed independently on each phase and the presence of the neutral wire is required. The StacoDVR- 5 regulator is used when the main is unbalanced and it is suitable for supplying three- phase loads, two- phase loads and single- phase loads. Output voltage reduced and regulated to the desired value with ±0.5% accuracy High power availability High reliability and ruggedness use with asymmetrical input supply and single- phase loads or unbalanced three- phase loads;

functionality based on the rms voltage. The control supplies the load to a correctly regulated voltage even with non- sinusoidal waves, frequently found in habitual applications.

regulation performed independently on each single phase (referring to the neutral, which must be available and connected); fully functioning with load charge variable from 0 to 100% and 100% phase

2 functionality based on the rms voltage. The control supplies the load to a correctly regulated voltage even with non- sinusoidal waves, frequently found in habitual applications. These waveforms are caused by the presence of (for example) converters, transformers with saturated core, non- linear loads, pulses, connecting or disconnecting transients, etc. regulation performed independently on each single phase (referring to the neutral, which must be available and connected); fully functioning with load charge variable from 0 to 100% and 100% phase unbalance. up to 30% harmonic content admitted on the load current. insensitivity to the load power factor no harmonic distortions generated on the output voltage absence of batteries and consequent easy storage and handling remote monitoring The STACO DVR- 5 regulator is provided with an electronic voltage regulator protection system which activates in case of overload on the voltage regulator. In such condition the load supply is not interrupted, but the regulator output voltage is automatically set to the lower between the mains voltage and the pre- set output voltage. The service continuity is guaranteed, although the voltage is not regulated. When the overload condition ceases to exist, the regulator switches automatically back to regular functioning. ain components and working principle three- phase buck/boost transformer motorised three- phase autotransformer with continuously variable transformer ratio microprocessor- based control system The control system refers the output voltage value to the set nominal one. If the voltage is outside the accuracy range (±0.5%), the control drives the motorized autotransformer gear- motor. By doing so, its rollers change position thus varying the voltage drawn and supplied to the buck/boost transformer primary winding. Being the secondary voltage of the buck/boost transformer in phase or in opposition to the supply, the voltage drawn from the motorized autotransformer is added or subtracted to the mains voltage, thus compensating its variations. INPUT OUTPUT T U1 U2 T V1 V2 T W1 W3 PVI PVO N N N1 N2 CO Ethernet USB PVI: input digital multimetre T: buck/boost transformer : motorized autotransformer : DC gearmotor N1: base board N2: signalling LED board CO: remote communication board PVO: output digital multimetre GPRS DSP microprocessor-based control board Totally digitalised control via D IGITAL S IGNAL P ROCESSOR (DSP) microprocessors control CPU measure CPU output voltage supervisor CPU (bodyguard) External control panel Input and output digital multimeter Keypad to surf through the menus available on the local display Display indicating alarms, setting parameters and connecting data. USB ports to update the base board software and download the stored data Phase LEDs Alarm LEDs Protections Voltage reset to the minimum value in case of black- out otor stop in case of motor overload otor stop in case of motor short- circuit Overload on the voltage regulator Roof fans activation managed by the control system Automatic circuit breaker to protect the voltage regulator via digital control electronic protection Protection of voltmeter lines and motor supplying circuits (fuses) Base board protection (fuses) Fan relays protection (fuses) Input SPD Surge Arrestor Class I protects against lightning Output SPD Surge Arrestor Class II protects against transients & spikes

Signals Line voltage out of range ('aximum voltage' and 'inimum voltage' LEDs) Excessive phase current ('aximum current' LED) Regulation reaching the limit switches ('Top limit switch' and 'Bottom

phase cycle (Local display) The intervention of any of the above mentioned protections (except for the fuses intervention) is signalled by luminous and acoustic alarms.

headquarters. Communication with the unit can be established also via the odbus TCP/IP protocol (commonly used for electronic industrial devices) through an Ethernet connection (Rj45 cable).

When connected, information concerning the status of the regulator can be transferred to a dedicated server.

3 Signals Line voltage out of range ('aximum voltage' and 'inimum voltage' LEDs) Excessive phase current ('aximum current' LED) Regulation reaching the limit switches ('Top limit switch' and 'Bottom limit switch' LEDs) Voltage regulator rollers overheating ('Roller overheating' LED) Enclosure overheating ('Overheating' LED) Line phase failure on the line (Local display) Alteration of the three- phase cycle (Local display) The intervention of any of the above mentioned protections (except for the fuses intervention) is signalled by luminous and acoustic alarms. Remote communication system Thanks to its capability to connect with ETHERNET and GPRS protocols, the control system can interface with the Internet, thus allowing for remote monitoring even from headquarters. Communication with the unit can be established also via the odbus TCP/IP protocol (commonly used for electronic industrial devices) through an Ethernet connection (Rj45 cable).. The control system is also provided with a USB port for downloading data on a memory key and uploading setting parameters should operating amendments in the system be required. When connected, information concerning the status of the regulator can be transferred to a dedicated server. Data can be analysed from a remote location, thus allowing for actively monitoring the functioning mode and, if necessary, altering the setting of some parameters wherever the unit might be installed. Downloading and uploading software, data and functioning parameters can be carried out either locally or remotely. Stabimon Once the remote communication is established, the dedicated software provided with the regulator enables the remote monitoring of the installation. A dashboard on a PC shows I/O parameters, alarm situation and phase status of the LEDs duplicating the regulator's external control panel. regulator Ethernet GPRS modem SERVICE data analysis online assistance local assistance In case of multiple installation, another window shows the general situation indicating whether a regulator is connected for remote communication (green LED) or not (transparent LED) and if an alarm condition is active (red LED).

4 TECHNICAL DATA PART NUBER RATED POWER [kva] INPUT VARIATION RANGE RATED VOLTAGE +/- 15, +/- 20, +/- 25, +/- 30, +15/- 35, +15/ AX INPUT CURRENT [A] OUTPUT CURRENT [A] OUTPUT ACCURACY FREQUENCY REGULATION SPEED +/- 0.5% or +/- 1% 50/60Hz +/- 5% or 60Hz +/- 5% 10 to 48 EFFICIENCY > 97 [%] ADITTED LOAD VARIATION [%] ADITTED PHASE ASIETRY [%] AINS WAVEFOR DISTORTION INCREENT None introduced [%] ADITTED OVERLOAD 200% 2min - COOLING Natural air ventilation (aided with fans over 45 C) - ABIENT TEPERATURE - 25/+45 [ C] STORAGE TEPERATURE - 25/+60 [ C] RELATIVE HUIDITY 95 [%] DIENSIONS [W x D x H] [mm] WEIGHT [kg] ENCLOSURER TYPE PROTECTION Standard IP 21 / Nema 1, Optional Unit - Specific COLOUR RAL [%] [V] [%] [Hz] [msec/v] INSTALLATION INDOOR - Input and Output digital multimeter with RS485 port INSTRUENTATION LCD display Automatic circuit breaker to protect regulator power path REGULATOR OVERLOAD PROTEСTION via digital control electronic protection system Fuses to protect auxiliary circuits COUNICATION SYSTE PARAETERS SETTING OVERVOLTAGE PROTECTION locally via PC and USB remotely via Ethernet, GPRS modem or ODBUS SPD Surge Arrestor Class I (input) SPD Surge Arrestor Class II (output) Soft start through super capacitors in case of mains failure N.B. - Other configurations are available on specific request. The technical data in the above tables can be altered by the Company without prior notice

5 OPTIONAL FEATURES Part Number suffix B1 Bypass switch- - Internal- - Input Disconnect and Output changeover interlocked switch [A] B2 Bypass switch- - Internal- - Input Circuit Breaker and Output changeover interlocked switch [A] B3 AINTENANCE BY- PASS FULL PROTECTION KIT Internal (Input- Bypass- Output) Circuit Breakers interlocked. (A+B+C+phase failure/sequence error), Over / Under Voltage Protection. Output Contactor 320 A and under, Output Circuit Breaker >320A [A] E EI / RFI Output Filtering L (A+B+C+phase failure/sequence error), Over / Under Voltage Protection. Output Contactor 320 A and under, Output Circuit Breaker >320A [A] P PRIARY INPUT CIRCUIT BREAKER with/without Thermal agnetic Release [A] S SECONDARY OUTPUT CIRCUIT BREAKER with/without Thermal agnetic Release [A] T1 INPUT SPD class I SURGE ARRESTORS T2 OUTPUT SPD class II SURGE ARRESTORS Z TROPICALIZATION anual By- Pass switch for maintenance and repair works 2000/1600A rated: a) Input Automatic Circuit Breaker ABB 4P 2000A rated (short circuit protection, complete with Phase Rotation/Phase Failure Relay) b) Interlocked By- Pass Automatic Circuit Breaker ABB 4P 2000A rated c) Output interlocked agneto Thermal Circuit Breaker ABB 4P 1600A rated (Overload protection and Over/Under voltage protection with adjustable time delay) for phase failure and phase reversal protection excludable by key selection STACO ENERGY PRODUCTS COPANY 1229 Byers Road, iamisburg Ohio USA

StacoDVR-4 Digital Voltage Regulator Electromechanical three-phase kVA

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