Transformers shall be outdoor type, with covers sealed by welding. The rating shall be as detailed in the
description, with ONAN cooling. The manufacturer shall clearly specify the material used for the transformer
windings i.e. copper, aluminium etc. as the case maybe. However The Corporation prefers transformer
windings made from copper for better performance and lifespan.
Rated voltage shall be 11000/400V on nominal tap, three phase, 50 Hz vector group Dyn 11. The HV system
prospective fault level in 15 kA.
A five position, off-circuit tapping switch shall select ratios of 95, 97.5, 100, 102,5 and 105% of rated primary
voltage. The impulse withstand voltage of the HV windings shall be 95 kV.
50KVA 1 x 35 mm2 4core PVC/SWA cable
2 x 50 mm2 ABC cable
100KVA 1 x 70 mm2 4core PVC/SWA cable
3 x 50 mm2 ABC cable
200KVA 1 x 150 mm2 4core PVC/SWA cable
3 x 95 mm2 ABC cable
Oil used in the transformer should be (polychlorinated biphenyls) PCB free, and this information shall be
clearly be indicated in the transformer nameplate
MAIN MANUFACTURING EQUIPMENT | ||||
EQUIPMENT NAME | MODEL & TYPE | Quantity | For | Supplier's Origin |
LENGTH CUT EQUIPMENT | CORE WIDTH<1000MM | 1 | Cut Silicon Steel Sheet | GEORG, Germany |
CORE WIDTH<800MM | 2 | |||
CORE WIDTH<650MM | 1 | SONENEN, Belgium | ||
CORE WIDTH<400MM | 3 | Xi'an Qiyuan, China | ||
SLITTING CUT EQUIPMENT | 2 | |||
CORE ASSENBLY TILTING PLATFORM | 6 | Lamination Stacking Core | HUAPENG, China | |
HORIZONTAL WINDING MACHINE | 10T | 4 | Coil Windings | LAE, Italy |
15T | 2 | HUAPENG, China | ||
BELOW 15T | 28 | |||
VERTICAL WINDING MACHINE | 10T/15T/20T | 2/4/2 | ||
HEAT PRESS MACHINE | 100T/500T/1200T/3000T | Each 1 | Insulating Part | |
HYDRAULIC PRESSURE MACHINE | 100T / 200T | 2 | Pressing Winding | |
BENDING PRESS MACHINE | 800T / 630T | 1/1 | Manufacture Tank | TIANSHUI, China |
SANDBLAST ROOM | 300 m2 | Tank Painting Clear | HUAPENG, China | |
VACUUM DRYNESS EQUIPMENT | 3 | Winding Dryness | Jinda, China | |
DRYNESS EQUIPMENT | KEROSENE VAPOUR | 5 | Action Part Dryness | YOUBANG, China |
TRAVELLING CRANE | 100T / 200T | 2/2 | Move Transformers | Dalisheng, China |
50T / 75T | 1/1 | |||
BELOW 50T | Total 28 | HUAPENG, China | ||
VACUUM FILTER MACHINE | VH080R | 2 | Filling Oil | ABB, Switzerland |
MECHANICAL TURRET PUNCH PRESS | CNC | 1 | Manufacture Control Cabinet & Cable Channel | Raskin, Switzerland |
BENDING PRESS MACHINE | NC | 1 | Yawei, China | |
ROCKER SWAGING MACHINE | HYDRAULIC NC | 1 | ||
FOIL TYPE WINDING MACHINE | 1 | Coil Dry-type transformer Windings | STOLLBERG, Germany | |
RJ2-1400 | 3 | HONGYE, China | ||
VACUUM CAST RETORT | 3 | Cast Windings | HEDRICH, Germany | |
SOLIDIFY KILN | 10 | Dry Windings | HUAPENG, China | |
