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APPENDIX C TECHNICAL PROPOSAL C.1

TECHNICAL SPECIFICATION 20kV SWITCHGEAR – METAL CLAD

C.1.1

SecoGear features: SecoGear metal-clad switchgear is designed and manufactured with advance technology and has been comprehensively and successfully typetested. SecoGear switchgear is typically used in power plant, substation of public utilities and suitable to provide control and protection for transformers, capacitors and motors. The rated voltage of SecoGear is 3.3kV-27kV and rated current ranges from 630A to 4000A. All SecoGear with switching device are equipped with SecoVac vacuum circuit breaker with corresponding specifications. SecoGear switchgear is designed for indoor applications. SecoGear is particularly suitable for application in industrial i.e. iron and steel mill, mining, oil and gas and infrastructure projects i.e. hi-rise building, airport, water treatment, etc. SecoGear is designed, assembled and tested to meet or exceed applicable lEC, DIN VDE, and GB/DL standards. SecoGear is designed for power protection applications in all major industries, including Power Generation, T&D, Oil&Gas, Automotives, Processing Plants, and Commercial Buildings

The SecoGear enclosure included the following compartments with its special features to ensure operation reliability and safety: Breaker Compartment Secogear breaker compartment has 6 numbers of interlocking systems to provide safety and prevent mal-operation. SecoGear is equipped with an automatic grounded metal shutter each for bus and line/load in front of its primary disconnect bushing. When the breaker is in the test or disconnect position, the shutter will automatically close and lock to provide the designed IP protection. Pressure relief is provided to have arc-proof integrity. Breaker position switch are provided within the drawout mechanism to provide status of breaker position within the compartment. Space heater is also provided as standard supply. Main Busbar Compartment A heat-shrinkable material with high dielectric and strength properties insulates the busbar. The main busbar is provided with inter-unit bushing to prevent travel of arcing to the entire main busbar of the line-up. Utilization of rounded edge copper busbars as well as D-type main busbar for current rated 2500A and above with full silver plating makes Secogear busbar system provide better performance and protection against internal arcing. Cable Compartment SecoGear cable compartment provides ample space for easy power cable connection. Standard current Transformers, zero sequence current transformer, voltage transformers, and surge arresters can be easily installed within the cable c0mpartment.

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Cable entry is designed for bottom entry however any requirement for top entry can be provided with additional rear compartment. Reliable interlock between cable compartment door and make-proof Earthing switch is provided. Position switch of Earthing switch and heater are provided as standard supply. Standard power cable gland plate is made of stainless steel with its cable supports/clamps. LV Compartment LV Compartment is designed as a modular compartment with ample space for secondary component installation and gasketed door. 3-stacks Swing mounted Terminal Block mounting plate will provide flexibility for site wiring. Control cable glands 2x4 (Left and Right) and Inter-unit cable through also provided as standard. Heater current monitor is a smart way to monitor heater operation. Mimic diagram with its position indicators and high voltage potential indicator are provided in front of the LV Compartment door. C.1.2

Technical Specification

C.1.2.1 Applicable standards SecoGear is designed and manufactured in compliance with the applicable portions of the current IEC, DIN, VDE and GB/DL Standards. - IEC 60694 Common specifications for high-voltage switchgear and controlgear standards. - IEC 62271-200 AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV. - IEC 62271-100 High-voltage switchgear and controlgear - Part 100: Alternating current circuit-breakers. - IEC 62271-102 High-voltage switchgear and controlgear. Alternating current disconnectors and earthing switches. - IEC 60071-2 Insulation co-ordination - Part 2: Application guide. - IEC 60044-1 Instrument transformers. Current transformers. - IEC 60044-2 Instrument transformers. Inductive voltage transformers. - IEC 60529 Degrees of protection provided by enclosures (IP Code). C.1.2.2 Main Technical Data Rated maximum voltage: Operating Voltage: Frequency: Power Frequency Withstand Voltage: Rated Lighting Impulse Withstand Voltage: Horizontal bus rated current: Horizontal bus coating: Horizontal bus joints plating: Horizontal bus rated Short-time withstand current (3s): Horizontal bus rated peak withstand current:

17.5kV 15kV 60Hz 38kV 95kV 1250A PVC fully insulated Silver plated 25kA; 65kA;

Arc Protection

LSC2B – AFLR

Rated auxiliary voltage: Circuit breaker Control Monitoring Heating & Lighting

230VAC - external source 230VAC - external source 230VAC - external source

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Wiring Rated Voltage Control command Voltage Transformers Current Transformers Inter Cubicle connection Grounding Circuit Frame Material: Protection degree: Ambient indoor temperature: Finish color (Coating): Operating Access: On site Assembly/Service Access:

PVC 750 V 1,5 mm 2 - Black 4 mm 2 - Black 4 mm 2 – Black 2,5 mm 2 – Black 2,5 mm 2 – Green Yellow Steel (2mm thickness), Al-Zn plated Panel IP 41 / Compartment IP20 +40deg. Celsius RAL 7032 (Light Grey) Full Front Access Front and Rear Access – BOTTOM

Environmental conditions. As specified in IEC 62208 Item 7.1.2.: The air is clean and relative humidity does not exceed 50% at a maximum temperature of +400C. Highest average value measured over 24 hours: Relative humidity 95% Highest average value measured over 1 month: Relative humidity 90% Minimum ambient temperature: - 150C. Maximum ambient temperature: +400C. (Higher temperatures may be possible with derating) Daily average temperature: ≤ + 350C. Maximum altitude: 1000m a.s.l. (Higher altitudes may be possible with derating) Note that in our standard construction, only the panel door is painted. All other steel surfaces receive a Al-Zn plating that can withstand pollution level class II indoor. Storage conditions. Minimum ambient temperature: - 300C. Maximum ambient temperature: +400C.

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APPENDIX D BILL OF MATERIAL Item 1

Marks 1250A SWG

Description Medium Voltage Switchgear, SecoGear IEC 17.5kV

Qty 1

Panel Type :Incoming - INCOMING TRAFO

2

- INCOMING Cubicle-IP4X 1250A 25kA W×D×H 650X1900X2200 (ALU-ZINC BOARD) (set)

1

- Seco VAC VCB-Withdrawable_17.5KV_1250A_25KA_P=150mm (set)

1

- 350-Protection Relay-350EP5G5HEPCSNDN (set)

1

- LZZB-17.5 150/A1, 1250/5A 0.5, 1250/5A 5P20 (set)

3

- LZZB-17.5 150/A1, 1250/5A 0.5, 1250/5A 5P20 (set)

3

- Earthing Switch-ESW_17.5KV_31.5KA_P=170mm (set)

1

- SA-HY5WZ-17/45 (pc)

3

- Main Busbar-1250A (set)

1

- T-off Busbar-1250A (set)

1

- Meter-EPM5500 (pc)

1

- Earthing Busbar-6*60 (set)

1

- LV Component-Standard LV component with CG239CD (set)

1

- IP41 (set)

1

- Additional Cost-Halogen Free LV Wire (set)

1

Panel Type :Outgoing - OUTGOING

7

- OUTGOING Cubicle-IP4X 630A 25kA W×D×H 650X1400X2200 (ALU-ZINC BOARD) (set)

1

- Seco VAC VCB-Withdrawable_17.5KV_630A_25KA_P=150mm (set)

1

- 350-Protection Relay-350EP5G5HEPCSNDN (set)

1

- LZZB-17.5 150/A1, 630/5A 0.5, 630/5A 5P20 (set)

3

- Earthing Switch-ESW_17.5KV_31.5KA_P=170mm (set)

1

- SA-HY5WZ-17/45 (pc)

3

- Main Busbar-1250A (set)

1

- T-off Busbar-630A (set)

1

- Meter-EPM5500 (pc)

1

- Earthing Busbar-6*60 (set)

1

- LV Component-Standard LV component with CG239CD (set)

1

- IP41 (set)

1

- Additional Cost-Halogen Free LV Wire (set)

1

Panel Type :CPT Panel - ST SERVICE TRAFO

1

- CPT PANEL Cubicle-IP4X 630A 25kA W×D×H 1000X1400X2200 (ALU-ZINC BOARD) (set)

1

- H.V.Fuse+truck For CPT Panel-Excluding CPT (set)

1

- Main Busbar-1250A (set)

1

- T-off Busbar-630A (set)

1

- Earthing Busbar-6*60 (set)

1

- LV Component-Standard LV component with CG239CD (set)

1

- IP41 (set)

1

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- Additional Cost-Halogen Free LV Wire (set) DC10-25/13.2 25kVA 13.2/0.23kV Panel Type :Busbar Tie - BUS TIE

1 1 1

- BUSBAR TIE Cubicle-IP4X 1250A 25kA W×D×H 650X1400X2200 (ALU-ZINC BOARD) (set)

1

- Seco VAC VCB-Withdrawable_17.5KV_1250A_25KA_P=150mm (set)

1

- Main Busbar-1250A (set)

1

- T-off Busbar-1250A (set)

1

- Earthing Busbar-6*60 (set)

1

- LV Component-Standard LV component with CG239CD (set)

1

- IP41 (set)

1

- Additional Cost-Halogen Free LV Wire (set)

1

Panel Type :Bus Riser with VT - BUS RISER WITH VT

1

- BUS RISER WITH VT Cubicle-IP4X 1250A 25kA W×D×H 650X1400X2200 (ALU-ZINC BOARD) (set)

1

- VT-JDZXR22-15C (pc)

3

- VT Truck for 650mm Panels-Excluding PT (set)

1

- VT fuse-XRNP 17.5/1A (pc)

3

- T-off Busbar-1250A (set)

1

- Main Busbar-1250A (set)

1

- Earthing Busbar-6*60 (set)

1

- LV Component-Standard LV component with CG239CD (set)

1

- IP41 (set)

1

- Additional Cost-Halogen Free LV Wire (set)

1

Panel Type :VT Panel - BUS VT

1

- VT PANEL Cubicle-IP4X 630A 25kA W×D×H 800X1400X2200 (ALU-ZINC BOARD) (set)

1

- Earthing Switch-ESW_17.5KV_31.5KA_P=210mm (set)

1

- VT-JDZX17-15R3 (pc)

3

- VT Truck for 800mm Panels-Excluding PT (set)

1

- VT fuse-XRNP 17.5/1A (pc)

3

- Main Busbar-1250A (set)

1

- T-off Busbar-630A (set)

1

- Earthing Busbar-6*60 (set)

1

- LV Component-Standard LV component with CG239CD (set)

1

- IP41 (set)

1

- Additional Cost-Halogen Free LV Wire (set)

1

Line Up Options

1

- Service Truck-One 650mm sevice truck for CB (pc)

1

- Service Truck-One 800mm sevice truck for CB (pc)

1

- Service Trail-One 650mm Sevice Trail for Cable VT (pc)

1

- End cover (pc)

2

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