MINISTRY OF ELECTRICITY

MINISTRY OF ELECTRICITY IRAQ SUPERGRID PROJECTS 400/132 KV GIS SUBSTATIONS VOLUME 3 TECHNICAL SCHEDULES JANUARY 2007

LIST OF REVISIONS 1 2 3 4 5 Current Rev. Date 19.11.04 18.03.05 Aug 05 Oct 05 Jan 07 Page affected ALL ALL ALL ALL ALL Prepared by SSA JK/MH JK MH/MH JK/MH Checked by (technical) JW JK/MH JK/MH JW JW Checked by (quality assurance) JW JW JW JW JW Approved by JW JW JW JW JW REVISION HISTORY 3 Aug 05 ALL Updated with MOE comments and general alignment across volumes. 4 Oct 05 ALL Specification split into GIS and AIS versions. Capacitor specification rationalised. Impulse withstand and Power frequency withstand values reviewed in accordance with IEC 60694. Details for 11 kv (Tertiary) shunt reactors added. 5 Jan 07 ALL General review

CONTENT SHEET VOLUME 1 VOLUME 2 VOLUME 3 TECHNICAL SPECIFICATION PLANT TECHNICAL SPECIFICATION & SCHEDULES CIVIL WORKS TECHNICAL SCHEDULES PLANT

CONTENTS Page No. SCHEDULE A - SCHEDULE B - SCHEDULE C - MILESTONES FOR THE PURPOSE OF PAYMENT AND HANDOVER TO THE CLIENT... A.1 TIME PERIODS FOR PROCUREMENT, DESIGN, MANUFACTURE, INSPECTION, TESTING, DELIVERY, INSTALLATION, COMMISSIONING AND HANDOVER... B.1 MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION... C.1 SCHEDULE C1-400 KV GAS INSULATED SWITCHGEAR... C.1 SCHEDULE C2-400 KV AIS OUTDOOR SWITCHGEAR... C.2 SCHEDULE C3-132 KV GAS INSULATED SWITCHGEAR... C.2 SCHEDULE C4-132 KV AIS OUTDOOR SWITCHGEAR... C.3 SCHEDULE C5-11 KV METALCLAD SWITCHGEAR... C.4 SCHEDULE C6 - TRANSFORMERS REACTORS AND AUXILIARY PLANT... C.4 SCHEDULE C7 - LV SERVICES EQUIPMENT... C.5 SCHEDULE C8 - CABLES... C.5 SCHEDULE C9 - SUBSTATION CONTROL AND PROTECTION SYSTEMS`... C.6 SCHEDULE D - TECHNICAL PARTICULARS... D.1 SCHEDULE D1-400 KV GAS INSULATED SWITCHGEAR... D1.1 SCHEDULE D2-400 KV OPEN TERMINAL SWITCHGEAR... D2.1 SCHEDULE D3-132 KV GAS INSULATED SWITCHGEAR... D3.1 SCHEDULE D4-132 KV OPEN TERMINAL SWITCHGEAR... D4.1 SCHEDULE D5-11 KV (TERTIARY) METALCLAD SWITCHGEAR... D5.1 SCHEDULE D6 - CRANE FOR GIS BUILDING... D6.1 SCHEDULE D7-400/132 KV POWER TRANSFORMERS... D7.1 SCHEDULE D8-400 KV SHUNT REACTORS... D8.1 SCHEDULE D9 - EARTHING TRANSFORMERS (11 KV TERTIARY)... D9.1 SCHEDULE D10 - AUXILIARY TRANSFORMERS (11 KV TERTIARY)... D10.1

CONTENTS - Continued Page No. SCHEDULE D11 - CAPACITORS (11 KV TERTIARY)... D11.1 SCHEDULE D12-11 KV (TERTIARY) SHUNT REACTORS... D12.1 SCHEDULE D13 - LVAC SWITCHGEAR... D13.1 SCHEDULE D14 - DC SYSTEM... D14.1 SCHEDULE D15-220 V AC UNINTERRUPTIBLE POWER SUPPLY... D15.1 SCHEDULE D16-132/11 KV POWER CABLES... D16.1 SCHEDULE D17 - LV CABLES... D17.1 SCHEDULE D18 - PROTECTION SYSTEM... D18.1 SCHEDULE D19 - SUBSTATION CONTROL SYSTEM... D19.1 SCEHDULE D20 - CONTROL, OPERATION, INDICATION AND ALARM CIRCUITS. D20.1 SCHEDULE D21 - BUSHINGS... D21.1 SCHEDULE E - TECHNICAL DOCUMENTATION/DRAWINGS AND OPERATING AND MAINTENANCE INSTRUCTIONS... E.1 SCHEDULE E1 - DRAWINGS ISSUED WITH THE TENDER... E.1 SCHEDULE E2 - DRAWINGS REQUIRED WITH TENDER... E.2 SCHEDULE E3 - CONTRACT DRAWING REQUIREMENTS... E.3 SCHEDULE E4 - CONTRACTOR S SUBMITTALS - DRAWING AND DESIGN DATA.. E.5 SCHEDULE E5 - INSTALLATION AND MAINTENANCE INSTRUCTIONS... E.7 SCHEDULE E6 - FINAL RECORDS... E.7 SCHEDULE F - DEVIATIONS FROM THE TECHNICAL SPECIFICATION... F.1 SCHEDULE G - SCHEDULE J1 - SCHEDULE J2 - SCHEDULE J3 - QUANTITIES AND PRICES...G.1 RECOMMENDED SPARES...J1.1 SPECIAL TOOLS, TEST EQUIPMENT...J2.1 TRANSFORMERS AND REACTORS QUANTITIES AND PRICES FOR SPARE PARTS...J3.1 SCHEDULE K - BUILDING SERVICES... K.1

SCHEDULE L - HEATING, VENTILATION AND AIR CONDITIONING...L.1

SCHEDULE A MILESTONES FOR THE PURPOSE OF PAYMENT AND HANDOVER TO THE CLIENT

SCHEDULE A - MILESTONES FOR THE PURPOSE OF PAYMENT AND HANDOVER TO THE CLIENT (Information to be provided with Tender) The Tenderer is to indicate all milestones identified within the programme for the works as defined in this Project Specification. The milestones should align with those included in the priced (fixed sum) activity schedule. Item No Description Section A.1 400kV SUBSTATION VOLUME 3

SCHEDULE B TIME PERIODS FOR PROCURMENT, DESIGN, MANUFACTURE, INSPECTION, TESTING, DELIVERY, INSTALLATION, COMMISSIONING AND HANDOVER

SCHEDULE B - TIME PERIODS FOR PROCUREMENT, DESIGN, MANUFACTURE, INSPECTION, TESTING, DELIVERY, INSTALLATION, COMMISSIONING AND HANDOVER (Information to be provided with Tender. All time periods are weeks from date of Notice to Proceed) Time within which: Description 1 All arrangement and equipment drawings shall be submitted for approval 2 All schemes and functional drawings shall be submitted for approval 3 All wiring and cable diagrams / schedules shall be submitted 4 Plant shall be available for final inspection / test in manufacturer s works 5 Plant shall be delivered to site 6 Plant shall be installed 7 Overall works are commissioned 8 Overall works are handed over to client B.1

SCHEDULE C MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION

SCHEDULE C - MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION (Information to be supplied with Tender) SCHEDULE C1 400 KV GAS INSULATED SWITCHGEAR Item Manufacturer Place of manufacture Place of testing and inspection 400 kv GIS: Current transformers Voltage transformers Surge arresters Circuit breaker operating mechanisms Circuit breaker operating mech. motors Disconnector/earth switch drive motors Support insulators Expansion bellows Bursting discs Gaskets Conductors Enclosures SF 6 Gas handling plant SF 6 Gas Partial discharge capacitive couplers Transducers Local control cubicles Indicating instruments Control switches Status indicators Any deviation from this Schedule shall be notified as soon as possible for the Engineer's approval. C.1

SCHEDULE C - MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION CONT SCHEDULE C2 400 KV AIS OUTDOOR SWITCHGEAR Item Manufacturer Place of manufacture Place of testing and inspection 400 kv AIS Current transformers 400 kv AIS Voltage transformers 400 kv AIS Surge arresters 400 kv AIS Disconnector/earth switches Steel Structures Conductor Support insulators Connectors SCHEDULE C3 132 KV GAS INSULATED SWITCHGEAR Item Manufacturer Place of manufacture Place of testing and inspection 132 kv GIS: Current transformers Voltage transformers Surge arresters Circuit breaker operating mechanisms Circuit breaker operating mech. motors Disconnector/earth switch drive motors C.2

SCHEDULE C - MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION CONT SCHEDULE C3 132 KV GAS INSULATED SWITCHGEAR - Cont Item Manufacturer Place of manufacture Place of testing and inspection SF 6 Gas handling plant SF 6 Gas Partial discharge capacitive couplers Local control cubicles GIS Switchroom Crane Any deviation from this Schedule shall be notified as soon as possible for the Engineer's approval. SCHEDULE C4 132 KV AIS OUTDOOR SWITCHGEAR Item Manufacturer Place of manufacture Place of testing and inspection 132 kv AIS Current transformers 132 kv AIS Voltage transformers 132 kv AIS Surge arresters 132 kv AIS Disconnector/earth switches Steel Structures Conductor Support insulators Connectors C.3

SCHEDULE C - MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION CONT SCHEDULE C5 11 KV METALCLAD SWITCHGEAR Item Manufacturer Place of manufacture Place of testing and inspection Metalclad enclosures Circuit breakers Circuit breaker operating mechanisms Interrupters Current transformers Voltage transformers Earthing switches Low voltage equipment Any deviation from this Schedule shall be notified as soon as possible for the Engineer's approval. SCHEDULE C6 - TRANSFORMERS REACTORS AND AUXILIARY PLANT Item No Description Manufacturer Place of manufacture Place of testing and inspection 1 400/132 kv Transformer 2 Transformer Tap Changer 3 400 kv Shunt Reactor 4 11/0.4 kv Auxiliary Transformer 5 Earthing Transformer 6 11 kv Tertiary Capacitor Bank 7 Series Reactor for Capacitor Bank 8 11 kv Tertiary Reactor C.4

SCHEDULE C - MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION CONT SCHEDULE C7 - LV SERVICES EQUIPMENT Item Manufacturer Place of manufacture Place of testing and inspection LVAC Equipment DC Equipment Batteries UPS Equipment Standby Diesel Generator Any deviation from this Schedule shall be notified as soon as possible for the Engineer's approval. SCHEDULE C8 - CABLES Item Manufacturer Place of manufacture Place of testing and inspection 132 kv power cable 11 kv power cable LV multicore / multipair cable Cable glands Cable trays Cable ladder racks Any deviation from this Schedule shall be notified as soon as possible for the Engineer's approval. C.5

SCHEDULE C - MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION CONT SCHEDULE C9 - SUBSTATION CONTROL AND PROTECTION SYSTEMS` Item Manufacturer Place of manufacture Place of testing and inspection SCS Substation Computer SCS Operator Workstations / HMI Operator Desk and Chair SCS Colour Visual Display Units SCS Substation LAN SCS Printers SCS Bay Control Unit BCU SCS I/O Cards for BCU SCS Software Engineering SCS Database Engineering Protection Relays Any deviation from this Schedule shall be notified as soon as possible for the Engineer's approval. C.6

SCHEDULE D TECHNICAL PARTICULARS

SCHEDULE D TECHNICAL PARTICULARS SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR 1 GENERAL Unit Data 1.1 Manufacturer & Place of manufacturing 1.2 Type designation GIS 1.3 Type Metal enclosed, gas insulated GIS- indoor 1.4 Standards IEC IEC 62271-203, 60694, 60270, 60376, 60480 1.5 Rated voltage kv 420 1.6 System Voltage kv 400 1.7 Rated frequency Hz 50 1.8 Rated lightning impulse withstand voltage - Phase to earth KV p 1425 - Across the isolating distance kv p 1665 1.9 Rated power frequency withstand voltage - Phase to earth kv 650 - Across the isolating distance kv 815 - Phase to earth at SF6 pressure of 1 bar kv 1.1 U phase 1.10 Rated short-time withstand current (1 s) ka 40 1.11 Rated peak withstand current ka 100 1.12 Type of busbars Breaker and Half 1.13 Type of enclosure Single phase enclosures 1.14 Material of enclosure for: - Circuit breaker Al/St - Busbars Al/St - Other compartments Al/St 1.15 Material of HV conductor Al/Cu 1.16 Material of contacts (indicate bi-metallic where used) 1.17 Type of contact Tulip D1.1

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont 1.18 Minimum subdivision of switchgear: Unit Data - Busbars Yes - Busbar disconnect Yes - Circuit breaker Yes - Circuit disconnect Yes - Cable box Yes - Voltage transformer Yes 1.19 Method of compensation of expansion and contraction - For busbars - For enclosure 1.20 Type of pressure relief device Bursting disk 1.21 Rupturing pressure bar 1.22 Type of filter employed for moisture absorption Molecular Sieve 1.23 Design lifetime of moisture absorbent Years 10 1.24 Total mass of switchgear (average per bay) kg 1.25 Mass of heaviest single component to be handled during erection kg 1.26 Total mass of SF6 gas (average per bay) kg 1.27 Density of gas in: - Circuit breaker compartment (g/l) - Other than circuit breaker compartments (g/l) 1.28 Nominal working gas pressure at 15 o C in: - Circuit breaker compartment bar - Other than circuit breaker compartment bar 1.29 Nominal working gas pressure at 50 o C in: - Circuit breaker compartment bar - Other than circuit breaker compartment bar 1.30 Design maximum pressure for: - Circuit breaker compartment bar - Other than circuit breaker compartment bar 1.31 Maximum leakage rate for any gas compartment per annum Less than 1% D1.2

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont Unit Data 1.32 Maximum leakage rate for the whole switchgear per Less than 1% annum 1.33 Minimum operating period without total years 10 replacement of SF 6 gas 1.34 Minimum thickness of enclosure mm 1.35 Minimum enclosure puncturing time due to internal arc fault at short-time withstand current ms Greater than 500 1.36 Minimum factors of safety for switchgear - Busbars or other connections based on elastic 2.5 limit - Complete insulators based on electromechanical 2.5 test - Insulator metal fittings based on elastic limit 2.5 - Steel structures based on elastic limit of 2.5 tension members and on crippling loads of compression members - Foundations for structures against overturning or uprooting under maximum simultaneous working loadings 2.5 1.37 Seismic factor UBC Zone 3 2 CIRCUIT BREAKER 2.1 Manufacturer & Place of manufacturing 2.2 Type designation 2.3 Type Single pressure puffer, SF 6 2.4 Standards IEC 62271-203, IEC 62271-100, 61233, 60694, 60427, 60376, 60480 2.5 Rated voltage kv 420 2.6 Rated Current at 50 0 C (Contractor to confirm by calculation) - Main busbar A 4000 - Bay busbar A 2000 - Line transformer Circuit A 1600 D1.3

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont Unit 2.7 Rated frequency Hz 50 2.8 Rated lightning impulse withstand voltage - Phase to earth kv p 1425 - Across the isolating distance kv p 1665 2.9 Rated power frequency withstand voltage - Phase to earth kv 650 - Across the isolating distance kv 815 2.10 Rated short-time withstand current (1 s) ka 40 2.11 Rated peak withstand current ka p 100 Data 2.12 Rated operating sequence O -0.3 sec- CO -3 min - CO 2.13 Auto reclosing O -0.3 sec- CO -3 min - CO 2.14 Rated making current ka p 100 2.16 Rated breaking current (asymmetrical) ka To IEC 62271-100 - %dc %dc 2.17 Rated breaking current under out-of-phase conditions ka 2.18 First phase to clear factor 1.3 2.18a Transient Recovery Voltages TRV s To IEC 62271-100 2.19 Rated capacitive breaking current To IEC 62271-100 Rated line charging breaking current A Rated cable charging breaking current A Rated Single/Back to Back Capacitor bank A breaking current D1.4

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont Unit Data 2.20 Rated small inductive/reactor breaking currents of: To IEC 62771-110 - small inductive A - reactor A 2.21 Maximum overvoltage factor on any switching duty pu 2.5 2.22 Maximum overvoltage factor when interrupting rated line/cable/capacitor bank charging currents 2.23 Maximum overvoltage factor when switching small inductive/reactor currents 2.24 Maximum total break time (trip initiation to final arc extinction) pu 2.5 pu 2.5 ms 60 2.25 Opening time (trip initiation to contact separation) - Without current ms - With 100% rated breaking current ms 2.26 Maximum time interval between opening of first and last phase of three phase circuit breakers 2.27 Maximum time interval between opening of interrupters of one phase 2.28 Closing time from energisation of close coil to latching of circuit breaker in fully closed position ms 3 ms ms 2.29 Making time (energisation of close coil to contact touch) - Without current ms - 100% making current ms 2.30 Maximum time interval between closure of first and last phase of three phase circuit breaker 2.31 Maximum time interval between closure of interrupters of one phase 2.32 Minimum time from extinction of main arc to contact make during auto-reclosing duty 2.33 Mechanical life of circuit breaker and mechanism in No. of operations ms 3 ms ms 10,000 D1.5

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont 2.34 Electrical contact life in number of operations at: Unit Data - Rated current - 2000 A - Fault current - 40 ka 15 to 20 - Cumulative ampere rating 2.35 Number of current interrupting break units in series per phase two 2.36 Type of operating mechanism Spring-charged or hydraulic 2.37 Type of power device (motor charged) - For closing Spring or hydraulic - For opening Spring or hydraulic 2.38 Hand operating facility yes 2.39 Hand charging facility yes 2.40 Manual spring release yes 2.41 Mechanical on/off indicator yes 2.42 Mechanical spring charge / discharge indication yes 2.43 Charging time s 2.44 Number of trip coils 2 2.45 Number of close coils 1 2.46 Nominal control and operating voltage V 110 DC 2.47 Nominal heater voltage V 220 AC 2.48 Rated power of trip coil W 2.49 Rated power of close coil W 2.50 Rated motor power W 2.51 Total load of heaters for circuit breaker W 2.52 Mass of circuit breaker complete (three pole) kg 2.53 Mass of single phase circuit breaker - - - 2.54 Emergency Trip Facility during failure of DC supply yes D1.6

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont 3 DISCONNECTS Unit Data 3.1 Manufacturer & Place of Manufacturing 3.2 Type designation 3.3 Type of operating mechanism Motor 3.4 Standards IEC 62271-102, IEC 60694, 61128, 62271-203, 60265 3.5 Rated voltage kv 420 3.6 Rated current at 50 o C (Contractor to confirm by calculation) Bay selectors A 2000 Circuit disconnector A 1600 3.7. Rated frequency Hz 50 3.8. Rated lightning impulse withstand voltage - Phase to earth kv p 1425 - Across the isolating distance kv p 1665 3.9. Rated power frequency withstand voltage - Phase to earth kv 650 - Across the isolating distance kv 815 3.10 Rated short time withstand current (1 s) ka 40 3.11 Rated peak withstand current ka p 100 3.12 Maximum capacitive current that can be interrupted by the isolator 3.13 Total time from initiation of opening operation to isolator in fully open position 3.14 Time from contact separation to extinct of capacitive arc 3.15 Total time from initiation of opening operation to time when isolator gap can withstand phase voltage A s s s 3.16 Hand operating facility yes D1.7

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont Unit 3.17 Locking arrangement in on/off position yes 3.18 Nominal control and operating voltage V 110 DC Data 3.19 Automatic isolation of control supplies when lock off 3.20 Accessibility to operating mechanism from ground level or catwalk yes yes 3.21 Nominal heater voltage V 220 AC 3.22 Rated power of operation coil W 3.23 Rated motor power W 3.24 Total load of heaters for isolator W 3.25 Total mass of three phase isolator complete kg 3.26 Mass of single phase isolator kg 3.27 Contact type Tulip 4 EARTHING SWITCH 4.1 Manufacturer & place of manufacturing 4.2 Type designation 4.3 Type of operating mechanism Motor 4.4 Standards IEC 62271-102, IEC 60694, 62271-203 4.5 Rated voltage kv 420 4.6 Rated frequency Hz 50 4.7 Rated lightning impulse withstand voltage phase to earth 4.8 Rated power frequency withstand voltage phase to earth kv p 1425 kv 650 4.9 Rated short time withstand current (1 s) ka 40 4.10 Rated peak withstand current ka p 100 4.11 Hand operating facility yes D1.8

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont Unit 4.12 Locking arrangement in on/off position yes 4.13 Nominal control and operating voltage V 110 DC Data 4.14 Automatic isolation of control supplies when lock off 4.15 Accessibility to operating mechanism from ground level or catwalk yes yes 4.16 Nominal heater voltage V 220 AC 4.17 Rated power of operating coil W 4.18 Rated motor power W 4.19 Total load of heaters for earthing switch W 4.20 Total mass of earthing switch complete kg 5 HIGH SPEED EARTHING SWITCH 5.1 Manufacturer & place of manufacturing 5.2 Type designation 5.3 Type of operating mechanism Motor-spring 5.4 Standards IEC 62271-102, IEC 60694, 61129, 62271-203 5.5 Rated voltage kv 420 5.6 Rated frequency Hz 50 5.7 Rated lightning impulse withstand voltage phase to earth 5.8 Rated power frequency withstand voltage phase to earth kv p 1425 kv 650 5.9 Rated short time withstand current (1 s) ka 40 5.10 Rated peak withstand current ka p 100 5.11 Rated short-circuit making current ka p 100 5.12 Rated capacitive symmetrical breaking current A 5.13 Rated inductive symmetrical breaking current A D1.9

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont 5.14 Total time from initiation of opening operation to earth switch in fully open position Unit ms Data 5.15 Time from contact separation to extinction of arc when interrupting rated breaking current ms 5.16 Making time ms 5.17 Charging time s 5.18 Hand operating facility yes 5.19 Locking arrangement in on/off position yes 5.20 Nominal control and operating voltage V d.c. 110 5.21 Automatic isolation of control supplies when lock off 5.22 Accessibility to operating mechanism from ground level or catwalk yes yes 5.23 Nominal heater voltage V 220 AC 5.24 Rated power of operation coil W 5.25 Rated motor power W 5.26 Total load of heaters for earthing switch W 5.27 Total mass of earthing switch complete kg 6 CURRENT TRANSFORMER 6.1 Manufacturer & place of manufacturing 6.2 Type Toroidal, GIS enclosed or external 6.3 Standards IEC 60694, 60044-1 6.4 Rated voltage GIS kv 420 Cores V 6.5 Rated lightning impulse withstand voltage phase to earth GIS kv p 1425 Cores kv p D1.10

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont Unit Data 6.6 Rated power frequency withstand voltage phase to earth GIS kv 650 Cores kv 3 kv (E K < 2 kv) kv 5 kv (E K 2 kv) 6.7 Rated power frequency voltage between secondaries 6.8 Inter-turn test kv 3 M/P type kv p 4.5 Class PX To IEC 60044-1 6.9 Rated frequency Hz 50 6.10 Rated continuous thermal current at 50 o C A 6.11 Rated short-time withstand current (1 s) ka 40 6.12 Rated dynamic current ka p 100 6.13 Are earthed metal screens fitted between primary and secondary windings 6.14 Is current transformer housed in a separate gas compartment 6.15 Details of all current transformers are to be provided by the Contractor post contract award - Number of cores - Rated extended primary current - Ratio (TR = turns ratio) I core II core III core IV core A A A A - Class 7 VOLTAGE TRANSFORMERS 7.1 Manufacturer & Place of manufacturing 7.2 Type designation for - Line transformer 3 phase - Busbar transformer 3 phase D1.11

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont Unit Data 7.3 Type Inductive, SF 6 gas insulated, enclosed 7.4 Standards IEC 60186,60694, 62271-203, 60044-2 7.5 Rated voltage kv 420 7.6 Rated frequency Hz 50 7.7 Rated lightning impulse phase to earth KV p 1425 7.8 Rated power frequency withstand voltage phase to earth 7.9 Maximum permissible partial discharge level Um 7.10 Maximum permissible partial discharge level 1.2Um / 3 kv 650 pc 10 pc 5 7.11 Maximum capacitive current discharge rating A 7.12 Method of suppressing ferroresonance phenomena 7.13 Line bay voltage transformer - Number of secondaries - Rated transformation ratio kv - Rated accuracy class I secondary II secondary - Rated output I secondary II secondary - Mass of single/three phase voltage transformer VA VA kg 7.14 Busbar voltage transformer - Number of secondaries - Rated transformation ratio kv - Rated accuracy class I secondary D1.12

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont - Rated output (Burden to be 25-100% rated burden) Unit VA Data I secondary - Mass of single/three phase voltage transformer kg 8 SURGE ARRESTERS 8.1 Type 8.2 Standard IEC 60099-4, 60099-1 60099-5, 60694 8.3 Rated/system voltage kv 420/400 - Maximum overvoltage factor on the system due to any switching duty pu 2.5 8.4 Rated system frequency Hz 50 8.5 Condition of system neutral Solid 8.6 Nominal Discharge current ka crest 8.7 Energy capability as per IEC 60099-4 kj/ kv 8.8 Rated voltage - MOA kv 8.9 Long duration discharge class as per IEC 60099-4 Class 3 8.10 Maximum Continuous Operating Voltage (COV) kv 8.11 TOV capability for - 1 sec kv - 10 sec kv 8.12 Maximum residual voltage with current wave - Switching Surges - 1kA / 2kA kv - 8/20 μs - 5kA kv - 8/20 μs - 10kA kv 8.14 Discharge current withstand strength - High current (4/10 μs) ka p - Low current 2000A A p D1.13

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D1 400 KV GAS INSULATED SWITCHGEAR - Cont 8.15 Pressure relief capability Unit Data - High current (0.2 s) ka - Low current 8.16 Rating of earth connections ka/sec 40/1 8.17 Surge counter provided Yes 9 CABLE BOX (WHEN APPLICABLE). 9.1 Manufacturer & Place of manufacturing 9.2 Type of designation 9.3 Standards IEC 60859 9.4 Cable HV test withstand capability kv 9.5 Rated normal current at 40 o C A 9.6 current at 50 o C (Contractor to confirm by calculation) A 9.7 Rated short time withstand current (1s) ka 40 9.8 Rated peak withstand current ka 100 9.9 Total mass of three phase cable box complete kg 10 MANUFACTURER QUALITY SYSTEM IN ACCORDANCE TO ISO 9000, 9001, 9002, 9003 AND 9004 Yes 10.1 Date of issue Latest 10.2 Validity Valid Certificates Yes 11 TYPE TEST CERTIFICATE TO BE ISSUED BY INDEPENDENT LABORATORY OR INDEPENDENTLY WITNESSED TYPE TEST CERTIFICATE TO BE SUBMITTED Yes D1.14

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR 1 GENERAL Unit Data 1.1 Standards IEC IEC 62271-100, 62271-102, 60694, 60233, 60044, 60186, 60383, 60815 1.2 Rated voltage kv 420 1.3 System Voltage kv 400 1.4 Rated frequency Hz 50 1.5 Rated lightning impulse withstand voltage Phase to earth kv p 1425 Across the isolating distance kv p 1665 1.6 Rated power frequency withstand voltage Phase to earth kv 520 Across the isolating distance kv 610 1.7 Rated short-time withstand current (1 s) ka 40 1.8 Rated peak withstand current ka 100 1.9 Rated Current Cable Feeder at 50 o C (Contractor to confirm by calculation) A 1.10 Material of HV conductor Aluminium 1.11 Material of contacts Bi-metallic 1.12 Minimum factors of safety for switchgear Busbars or other connections based on elastic limit Complete insulators based on electromechanical test 2.5 2.5 Insulator metal fittings based on elastic limit 2.5 Steel structures based on elastic limit of tension members and on crippling loads of compression members Foundations for structures against overturning or uprooting under maximum simultaneous working loadings 2.5 2.5 D2.1

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR - Cont Unit 1.13 Creepage distance (based on Um) mm/kv 31 1.14 Seismic factor As UBC 2 ISOLATORS 2.1 Type designation 2.2 Type of operating mechanism Motor Data 2.3 Standards IEC 62271-102, IEC 60694, 61128, 60265 2.4 Maximum capacitive current that can be interrupted by the isolator A 2.5 Total time from initiation of opening operation to isolator in fully open position 2.6 Time from contact separation to extinct of capacitive arc 2.7 Total time from initiation of opening operation to time when isolator gap can withstand phase voltage s s s 2.8 Hand operating facility Yes 2.9 Locking arrangement in on/off position Yes 2.10 Nominal control and operating voltage V 110 DC 2.11 Automatic isolation of control supplies when lock off 2.12 Accessibility to operating mechanism from ground level Yes Yes 2.13 Nominal heater voltage V 220 AC 2.14 Rated power of operation coil W 2.15 Rated motor power W 2.16 Total load of heaters for isolator W 2.17 Total mass of three phase isolator complete kg 2.18 Mass of single phase isolator kg 2.19 Contact type 2.20 Type of interlocking D2.2

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR - Cont 3 EARTHING SWITCH Unit Data 3.1 Type designation 3.2 Type of operating mechanism Hand 3.3 Standards IEC 62271-102, 60694 3.4 Hand operating facility Yes 3.5 Locking arrangement in on/off position Yes 3.6 Nominal control and operating voltage V 110 DC 3.7 Automatic isolation of control supplies when lock off 3.8 Accessibility to operating mechanism from ground level Yes Yes 3.9 Nominal heater voltage V 220 AC 3.10 Total load of heaters for earthing switch W 3.11 Total mass of earthing switch complete kg D2.3

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR - Cont 4 CURRENT TRANSFORMER Unit Data 4.1 Type Post 4.2 Standards IEC 60694, 60044-1 4.3 Rated continuous thermal current at 50 o C Rated extended primary current Note: All Cl PX CTs shall be I SN 1.2 A 4.4 Cable feeder bays current transformer To suit specific requirements Number of cores Rated extended primary current Ratio (TR turns ratio) I core II core III core IV core A A A A Class I core II core III core IV core Knee point voltage (E k ) I core II core III core IV core V V V V Exciting current (I E ) at E k I core II core III core IV core ma ma ma ma Rated output (burden to be 25-100% rated burden) I core II core III core IV core VA VA VA VA D2.4

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR - Cont Total mass of single phase current transformer complete Unit kg Data 4.5 Bus coupler and bus section bays current transformer To suit specific arrangement Number of cores 120% 5 CAPACITIVE VOLTAGE TRANSFORMERS 5.1 Type Capacitive 5.2 Standards IEC 60186, IEC/PAS 60044-5:2002 5.3 Maximum permissible partial discharge level Um pc 10 5.4 Maximum permissible partial discharge level 1.2Um / 3 pc 5 5.5 Method of suppressing ferroresonance phenomena 5.5 Line voltage transformer 5.7 Number of secondaries 2 Rated transformation ratio kv 132/ 3 / 0.11/ 3 /0.11/ 3 Rated accuracy class I secondary II secondary 3P/1.0 3P Rated output (burden to be 25-100% rated burden) I secondary II secondary Mass of single phase voltage transformer VA VA kg D2.5

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR - Cont 6 SURGE ARRESTERS Unit Data 6.1 Type 6.2 Standard IEC 60099-4, 60099-1 60099-5, 60694 6.3 Rated/system voltage kv 145/132 6.4 Maximum overvoltage factor on the system due to any switching duty pu 2.5 6.5 Rated system frequency Hz 50 6.6 Condition of system neutral Solid 6.7 Nominal Discharge current ka crest 6.8 Energy capability as per IEC 60099-4 kj/ kv 6.9 Rated voltage - MOA kv 6.10 Long duration discharge class as per IEC 60099-4 6.11 Maximum Continuous Operating Voltage (COV) Class kv 6.12 TOV capability for 1 sec kv 10 sec kv 6.14 Switching Surges - 1kA / 2kA kv 8/20 μs - 5kA kv 8/20 μs - 10kA kv 6.15 Discharge current withstand strength ka p High current (4/10 μs) A p Low current 2000A 6.16 Pressure relief capability ka High current (0.2 s) Low current ka/sec As per IEC 6.17 Rating of earth connections 40/1 6.18 Surge counter provided Yes D2.6

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR - Cont 7 BUSBARS AND CONNECTIONS Unit Data 7.1 Type (flexible or tubular) 7.2 Material 7.3 Short-circuit current rating / duration ka/s 7.4 Normal current rating at 40 o C at 50 o C A A 7.5 Maximum continuous current rating A 7.6 Flexible conductors stranding nominal cross-sectional area outer diameter no. of conductors per bundle spacing between conductors 7.7 Tubular conductors nominal cross-sectional area outer diameter inner diameter 7.8 Maximum stress at surface of flexible conductor 7.9 Radio influence voltage level measured at 1.1 times Us/ 3 at 1 MHz mm 2 mm mm mm 2 mm mm kv/mm µv D2.7

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR - Cont 8 POST TYPE INSULATORS Unit Data 8.1 Type designation 8.2 Insulator material 8.3 Number of units in complete post insulator 8.4 Length of each unit mm 8.5 Mass of complete post insulator kg 8.6 Maximum cantilever working load (complete post insulator) 8.7 Minimum cantilever breaking load, upright (complete post insulator) N N 8.8 Power frequency withstand voltage dry: wet kv 8.9 Basic insulation level kvp 8.10 Minimum dry/wet switching surge withstand level 8.11 Radio influence voltage level measured at 1.1 times Us/ 3 at 1 MHz kvp µv D2.8

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR - Cont 9 TENSION AND SUSPENSION INSULATORS Unit Data 9.1 Type designation 9.2 Insulator material 9.3 Number of units in string mm 9.4 Greatest diameter of units mm 9.5 Distance between centres of units mm 9.6 Length of string, overall mm 9.7 Mass of string complete with all fittings kg 9.8 Maximum working load N 9.9 Power frequency withstand voltage of complete string kv 9.10 Basic insulation level of complete string kvp 9.11 Minimum wet switching surge withstand level of complete string 9.12 Radio influence voltage measured at 1.1 times Us/ 3 at 1 MHz kvp µv D2.9

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D2 400 KV OPEN TERMINAL SWITCHGEAR Cont 10 400 KV LINE TRAPS Unit Data 10.1 Maker's type and designation 10.2 Main coil insulation class 10.3 Rated continuous current A 10.4 Rated short time current (1 second/3 seconds) ka 10.5 Power frequency 10.6 Insulating level across line traps at: 10.6.1 Power frequency 10.6.2 Impulse 10.7 Rated voltage level of protective device kv 10.8 Centre frequency khz 10.9 Bank width of blocking range khz 10.10 Self resonant frequency khz 10.11 Tapping loss db 10.12 Blocking impedance Ω 10.13 Total mass kg D2.10

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR 1 GENERAL Unit Data 1.1 Manufacturer & Place of manufacturing 1.2 Type designation GIS 1.3 Type Metal enclosed, gas insulated GISindoor 1.4 Standards IEC IEC 62271-203, 60694, 60270, 60376, 60480 1.5 Rated voltage kv 145 1.6 System Voltage kv 132 1.7 Rated frequency Hz 50 1.8 Rated lightning impulse withstand voltage - Phase to earth kv p 650 - Across the isolating distance kv p 750 1.9 Rated power frequency withstand voltage - Phase to earth kv 275 - Across the isolating distance kv 315 - Phase to earth at SF6 pressure of 1 bar kv 1.1 U phase 1.10 Rated short-time withstand current (1 s) ka 40 1.11 Rated peak withstand current ka 80 1.12 Type of busbars Double 1.13 Type of enclosure Single/Three phase enclosed 1.14 Material of enclosure for: - Circuit breaker Al/St - Busbars Al/St - Other compartments Al/St 1.15 Material of HV conductor Al/Cu 1.16 Material of contacts (indicate bi-metallic where used) D3.1

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont Unit 1.17 Type of contact Tulip 1.18 Minimum subdivision of switchgear: - Busbars - Busbar isolator - Circuit breaker Yes - Circuit isolator - Cable box - Voltage transformer Yes 1.19 Method of compensation of expansion and contraction - For busbars - For enclosure Data 1.20 Type of pressure relief device Bursting disk 1.21 Rupturing pressure bar 1.22 Type of filter employed for moisture absorption Molecular Sieve 1.23 Design lifetime of moisture absorbent Years 10 1.24 Total mass of switchgear (average per bay) kg 1.25 Mass of heaviest single component to be handled during erection kg 1.26 Total mass of SF6 gas (average per bay) kg 1.27 Density of gas in: - Circuit breaker compartment (g/l) - Other than circuit breaker compartments (g/l) 1.28 Nominal working gas pressure at 15 o C in: - Circuit breaker compartment bar - Other than circuit breaker compartment bar 1.29 Nominal working gas pressure at 50 o C in: - Circuit breaker compartment bar - Other than circuit breaker compartment bar 1.30 Design maximum pressure for: - Circuit breaker compartment bar - Other than circuit breaker compartment bar D3.2

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont Unit 1.31 Maximum leakage rate for any gas compartment per annum Data Less than 1% 1.32 Maximum leakage rate for the whole switchgear per Less than 1% annum 1.33 Minimum operating period without total replacement of SF 6 gas years 10 1.34 Minimum thickness of enclosure mm 1.35 Minimum enclosure puncturing time due to internal arc fault at short-time withstand current ms Greater than 500 1.36 Minimum factors of safety for switchgear - Busbars or other connections based on elastic 2.5 limit - Complete insulators based on electromechanical 2.5 test - Insulator metal fittings based on elastic limit 2.5 - Steel structures based on elastic limit of 2.5 tension members and on crippling loads of compression members - Foundations for structures against overturning or uprooting under maximum simultaneous working loadings 2.5 1.37 Seismic factor 2 CIRCUIT BREAKER 2.1 Manufacturer & Place of manufacturing 2.2 Type designation 2.3 Type Single pressure puffer, SF 6 2.4 Standards IEC 62271-203, IEC 62271-100, 61233, 60694, 60427, 60376, 60480 2.5 Rated voltage kv 132 2.6a Rated Current Busbars, Bus Section and Bus Coupler - at 50 0 C (Contractor to confirm by calculation) A 3150 D3.3

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont 2.6b Rated Current Transformer/Transformer Feeder Unit Data - at 50 0 C (Contractor to confirm by calculation) A 1600 2.6c Rated Current Incoming Feeder - at 50 0 C (Contractor to confirm by calculation) A 1600 2.7 Rated frequency Hz 50 2.8 Rated lightning impulse withstand voltage - Phase to earth kv p 650 - Across the isolating distance kv p 750 2.9 Rated power frequency withstand voltage - Phase to earth kv 275 - Across the isolating distance kv 315 2.10 Rated short-time withstand current (1 s) ka 40 2.11 Rated peak withstand current ka p 80 2.12 Rated operating sequence O -0.3 sec- CO -3 min - CO 2.13 Auto reclosing O -0.3 sec- CO -3 min - CO 2.14 Rated making current ka p 80 2.16 Rated breaking current (asymmetrical) ka To IEC 62271-100 - %dc %dc 2.17 Rated breaking current under out-of-phase conditions ka 2.18 First phase to clear factor 1.3 2.18a Transient Recovery Voltages TRV s To IEC 62271-100 2.19 Rated capacitive breaking current To IEC 62271-100 Rated line charging breaking current A Rated cable charging breaking current A Rated Single/Back to Back Capacitor bank A breaking current D3.4

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont Unit Data 2.20 Rated small inductive/reactor breaking currents of: To IEC 62771-110 - small inductive A - reactor A 2.21 Maximum overvoltage factor on any switching duty pu 2.5 2.22 Maximum overvoltage factor when interrupting rated line/cable/capacitor bank charging currents 2.23 Maximum overvoltage factor when switching small inductive/reactor currents 2.24 Maximum total break time (trip initiation to final arc extinction) pu 2.5 pu 2.5 ms 60 2.25 Opening time (trip initiation to contact separation) - Without current ms - With 100% rated breaking current ms 2.26 Maximum time interval between opening of first and last phase of three phase circuit breakers 2.27 Maximum time interval between opening of interrupters of one phase 2.28 Closing time from energisation of close coil to latching of circuit breaker in fully closed position ms 3 - - - ms 2.29 Making time (energisation of close coil to contact touch) - Without current ms - 100% making current ms 2.30 Maximum time interval between closure of first and last phase of three phase circuit breaker 2.31 Maximum time interval between closure of interrupters of one phase 2.32 Minimum time from extinction of main arc to contact make during auto-reclosing duty 2.33 Mechanical life of circuit breaker and mechanism in No. of operations ms 3 - - - ms 300 10,000 D3.5

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont 2.34 Electrical contact life in number of operations at: Unit Data - Rated current - 3150A/1600A - Fault current - 40 ka 15 to 20 - Cumulative ampere rating 2.35 Number of current interrupting break units in series per phase one 2.36 Type of operating mechanism Spring-charged or hydraulic 2.37 Type of power device (motor changed) - For closing Spring or hydraulic - For opening Spring or hydraulic 2.38 Hand operating facility yes 2.39 Hand charging facility yes 2.40 Manual spring release yes 2.41 Mechanical on/off indicator yes 2.42 Mechanical spring charge / discharge indication yes 2.43 Charging time s 2.44 Number of trip coils 2 2.45 Number of close coils 1 2.46 Nominal control and operating voltage V 110 DC 2.47 Nominal heater voltage V 220 AC 2.48 Rated power of trip coil W 2.49 Rated power of close coil W 2.50 Rated motor power W 2.51 Total load of heaters for circuit breaker W 2.52 Mass of circuit breaker complete (three pole) kg 2.53 Mass of single phase circuit breaker - - - D3.6

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont 2.54 Emergency Trip Facility during failure of DC supply Unit yes Data 3 DISCONNECTS 3.1 Manufacturer & Place of Manufacturing 3.2 Type designation 3.3 Type of operating mechanism Motor 3.4 Standards IEC 62271-102, IEC 60694, 61128, 62271-203, 60265 3.5 Rated voltage kv 145 3.6 Rated current at 50 o C (Contractor to confirm by calculation) - Busbars, Bus Section and Bus Coupler A 3150 - Circuits A 1600 3.7 Rated frequency Hz 50 3.8 Rated lightning impulse withstand voltage - Phase to earth kv p 650 - Across the isolating distance kv p 750 3.9 Rated power frequency withstand voltage - Phase to earth kv 275 - Across the isolating distance kv 315 3.10 Rated short time withstand current (1 s) ka 40 3.11 Rated peak withstand current ka p 80 3.12 Maximum capacitive current that can be interrupted by the isolator 3.13 Total time from initiation of opening operation to isolator in fully open position 3.14 Time from contact separation to extinct of capacitive arc A s s D3.7

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont 3.15 Total time from initiation of opening operation to time when isolator gap can withstand phase voltage Unit s Data 3.16 Hand operating facility yes 3.17 Locking arrangement in on/off position yes 3.18 Nominal control and operating voltage V 110 DC 3.19 Automatic isolation of control supplies when lock off 3.20 Accessibility to operating mechanism from ground level or catwalk yes yes 3.21 Nominal heater voltage V 220 AC 3.22 Rated power of operation coil W 3.23 Rated motor power W 3.24 Total load of heaters for isolator W 3.25 Total mass of three phase isolator complete kg 3.26 Mass of single phase isolator kg 3.27 Contact type Tulip 4 EARTHING SWITCH 4.1 Manufacturer & place of manufacturing 4.2 Type designation 4.3 Type of operating mechanism Motor 4.4 Standards IEC 62271-102, IEC 60694, 62271-203 4.5 Rated voltage kv 145 4.6 Rated frequency Hz 50 4.7 Rated lightning impulse withstand voltage phase to earth 4.8 Rated power frequency withstand voltage phase to earth kv p 650 kv 275 D3.8

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont Unit 4.9 Rated short time withstand current (1 s) ka 40 4.10 Rated peak withstand current ka 80 4.11 Hand operating facility yes 4.12 Locking arrangement in on/off position yes 4.13 Nominal control and operating voltage V 110 DC Data 4.14 Automatic isolation of control supplies when lock off 4.15 Accessibility to operating mechanism from ground level or catwalk yes yes 4.16 Nominal heater voltage V 220 AC 4.17 Rated power of operating coil W 4.18 Rated motor power W 4.19 Total load of heaters for earthing switch W 4.20 Total mass of earthing switch complete kg 5 HIGH SPEED EARTHING SWITCH 5.1 Manufacturer & place of manufacturing 5.2 Type designation 5.3 Type of operating mechanism Motor-spring 5.4 Standards IEC 62271-102, IEC 60694, 61129, 62271-203 5.5 Rated voltage kv 145 5.6 Rated frequency Hz 50 5.7 Rated lightning impulse withstand voltage phase to earth 5.8 Rated power frequency withstand voltage phase to earth kv p 650 kv 275 D3.9

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont Unit 5.9 Rated short time withstand current (1 s) ka 40 5.10 Rated peak withstand current ka p 80 5.11 Rated short-circuit making current ka p 80 5.12 Rated capacitive symmetrical breaking current A 5.13 Rated inductive symmetrical breaking current A Data 5.14 Total time from initiation of opening operation to earth switch in fully open position 5.15 Time from contact separation to extinction of arc when interrupting rated breaking current ms ms 5.16 Making time ms 5.17 Charging time s 5.18 Hand operating facility yes 5.19 Locking arrangement in on/off position yes 5.20 Nominal control and operating voltage V d.c. 110 5.21 Automatic isolation of control supplies when lock off 5.22 Accessibility to operating mechanism from ground level or catwalk yes yes 5.23 Nominal heater voltage V 220 AC 5.24 Rated power of operation coil W 5.25 Rated motor power W 5.26 Total load of heaters for earthing switch W 5.27 Total mass of earthing switch complete kg 6 CURRENT TRANSFORMER 6.1 Manufacturer & place of manufacturing 6.2 Type Toroidal, GIS enclosed 6.3 Standards IEC 60694, 60044-1 D3.10

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont 6.4 Rated voltage Unit Data GIS kv 145 Cores V 720 6.5 Rated lightning impulse withstand voltage phase to earth GIS kv p 650 Cores kv p 6.6 Rated power frequency withstand voltage phase to earth GIS kv 275 Cores kv 3 kv (E K < 2 kv) kv 5 kv (E K 2 kv) 6.7 Rated power frequency between secondaries 3 kv 6.8 Inter-turn test M/P type 4.5 kv peak Class PX To IEC 60044-1 6.9 Rated frequency Hz 50 6.10 Rated continuous thermal current at 50 o C Rated extended primary current 6.11 Rated short-time withstand current (1 s) ka 40 6.12 Rated dynamic current ka p 80 6.13 Are earthed metal screens fitted between primary and secondary windings 6.14 Is current transformer housed in a separate gas compartment 6.15 Transformer bays current transformer: To suit specific - Number of cores arrangement - Rated extended primary current - Ratio (TR = turns ratio) I core II core III core IV core V core A A A A A D3.11

SCHEDULE D TECHNICAL PARTICULARS CONT SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR Cont - Class Unit Data I core II core III core IV core V core - Knee point voltage (E k ) I core II core III core IV core V core V V V V V - Exciting current (I E ) at E k I core II core III core IV core V core ma ma ma ma ma - Rated output (Burden to be 25-100% rated burden) I core II core III core IV core V core VA VA VA VA VA 6.16 Line bays current transformer To suit specific - Number of cores arrangement - Rated extended primary current - Ratio (TR = turns ratio) - Knee point voltage (E k ) 6.17 Bus Section & Bus Coupler CT No.1 To suit specific - Number of cores arrangement - Rated extended primary current - Ratio (TR = turns ratio) 6.18 Bus Section & Bus Coupler CT No. 2 (at the other side of circuit breaker) To suit specific - Number of cores arrangement D3.12

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont - Rated extended primary current - Ratio (TR = turns ratio) Unit Data 7 VOLTAGE TRANSFORMERS 7.1 Manufacturer & Place of manufacturing 7.2 Type designation for - Line transformer 3 phase - Busbar transformer 3 phase 7.3 Type Inductive, SF 6 gas insulated, enclosed 7.4 Standards IEC 60186,60694, 62271-203, 60044-2 7.5 Rated voltage kv 145 7.6 Rated frequency Hz 50 7.7 Rated lightning impulse phase to earth kv p 650 7.8 Rated power frequency withstand voltage phase to earth 7.9 Maximum permissible partial discharge level Um 7.10 Maximum permissible partial discharge level 1.2Um / 3 kv 275 pc 10 pc 5 7.11 Maximum capacitive current discharge rating A TBA 7.12 Method of suppressing ferroresonance phenomena 7.13 Line bay voltage transformer - Number of secondaries - Rated transformation ratio kv - Rated accuracy class I secondary II secondary - Rated output I secondary II secondary VA VA D3.13

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont - Mass of single/three phase voltage transformer Unit kg Data 7.14 Busbar voltage transformer - Number of secondaries - Rated transformation ratio kv - Rated accuracy class I secondary - Rated output (Burden to be 25-100% rated burden) VA I secondary - Mass of single/three phase voltage transformer kg 8 SURGE ARRESTERS 8.1 Type 8.2 Standard IEC 60099-4, 60099-1 60099-5, 60694 8.3 Rated/system voltage kv 145/132 - Maximum overvoltage factor on the system due to any switching duty pu 2.5 8.4 Rated system frequency Hz 50 8.5 Condition of system neutral Solid 8.6 Nominal Discharge current ka crest 8.7 Energy capability as per IEC 60099-4 kj/ kv 8.8 Rated voltage - MOA kv 8.9 Long duration discharge class as per IEC 60099-4 Class 8.10 Maximum Continuous Operating Voltage (COV) kv 8.11 TOV capability for - 1 sec kv - 10 sec kv D3.14

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont 8.12 Maximum residual voltage with current wave Unit Data - Switching Surges - 1kA / 2kA kv - 8/20 μs - 5kA kv - 8/20 μs - 10kA kv 8.14 Discharge current withstand strength - High current (4/10 μs) KA p - Low current 2000A A p 8.15 Pressure relief capability - High current (0.2 s) ka - Low current As per IEC 8.16 Rating of earth connections ka/sec 40/1 8.17 Surge counter provided Yes 9 CABLE BOX 9.1 Manufacturer & Place of manufacturing 9.2 Type of designation 9.3 Standards IEC 60859 9.4 Rated voltage kv 145 9.5 Rated lightning impulse withstand voltage phase to earth 9.6 Rated power frequency withstand voltage phase to earth kv p 650 kv 275 9.7 Cable HV test withstand capability kv 9.8 Rated frequency Hz 50 9.9 Rated normal current at 40 o C A 9.10 current at 50 o C (Contractor to confirm by calculation) A 9.11 Rated short time withstand current (1s) ka 40 9.12 Rated peak withstand current ka 80 9.13 Total mass of three phase cable box complete kg D3.15

SCHEDULE D3 132 KV GAS INSULATED SWITCHGEAR - Cont 10 MANUFACTURER QUALITY SYSTEM IN ACCORDANCE TO ISO 9000, 9001, 9002, 9003 AND 9004 Unit Yes Data 10.1 Date of issue Latest 10.2 Validity Valid Certificates Yes 11 TYPE TEST CERTIFICATE TO BE ISSUED BY INDEPENDENT LABORATORY OR INDEPENDENTLY WITNESSED TYPE TEST CERTIFICATE TO BE SUBMITTED Yes D3.16

SCHEDULE D4 132 KV OPEN TERMINAL SWITCHGEAR 1 GENERAL Unit Data 1.1 Standards IEC IEC 62271-100, 62271-102, 60694, 60233, 60044, 60186, 60383, 60815 1.2 Rated voltage kv 145 1.3 System Voltage kv 132 1.4 Rated frequency Hz 50 1.5 Rated lightning impulse withstand voltage Phase to earth kv p 650 Across the isolating distance kv p 750 1.6 Rated power frequency withstand voltage Phase to earth kv 275 Across the isolating distance kv 315 1.7 Rated short-time withstand current (1 s) ka 40 1.8 Rated peak withstand current ka 62.5 1.9 Rated Current Cable Feeder at 50 o C (Contractor to confirm by calculation) A 1600 (or to suit) 1.10 Material of HV conductor Aluminium 1.11 Material of contacts Bi-metallic 1.12 Minimum factors of safety for switchgear Busbars or other connections based on elastic limit Complete insulators based on electromechanical test Insulator metal fittings based on elastic limit 2.5 Steel structures based on elastic limit of tension members and on crippling loads of compression members Foundations for structures against overturning or uprooting under maximum simultaneous working loadings 2.5 2.5 2.5 2.5 D4.1