Performance standards   A, GB1094.1~2-1996,GB1094.3. 5-1985 electric transformers;   B, GB/T6451-1999 three-phase power transformers Youjin-technical parameters and requirements.   Performance characteristics   A, low-voltage winding from small capacity used copper wire, copper is generally used for the cones - around structure; Winding cones - use multi-storey high structure to the winding-go round distribution balance leak magnetic small, high mechanical strength and resistance to short-circuit capability.   B, iron core and winding their adopted positive measures by height, and took part of a low voltage fuse from lock-pine nut, a non-working heart structure can withstand transport jolt Zhen.   C, coil and iron core using vacuum drying, transformers and fuel oil using vacuum Lu:you processes so that transformers internal moisture to a minimum.   D, plus a corrugated piece, it has to breathe and function to compensate for temperature changes caused oil volume changes, so the product storage cabinets not clearly reduces transformer height.   E, replaced by corrugated film storage cabinets for transformer oil from the outside world, thus effectively preventing oxygen, water and access to insulation performance decline.   F, based on the above five points are to ensure the normal operation of a transformer in need oil, thus significantly reducing maintenance costs transformers, and the extension of the useful life of transformers.   G, protection devices :   Pressure release valve : : When transformers caused by the failure to reach 35Kpa internal pressure, the pressure release valve movements, the release of pressure or warning, when pressure dropped to normal value, restitution, and ensure the continued operation of the transformers.   Treatments devices : : 800KVA transformer installed and above signal thermometer and gas relays. Sik set temperature Tiaozha or warning, light, heavy gas warning.   H, S9 empty depletion than 10% decline in average GB/T6451 Group I   Load depletion than 10% decline in average GB/T6451 Group   S11 empty depletion than 30% decline in average GB/T6451 Group   Load depletion than 10% decline in average GB/T6451 Group