Specifications

220kV on-load-tap-changing power transformer is made of high-quality silicon-steel sheets, and laminated by steps.

220kV on-load-tap-changing power transformer is made of high-quality silicon-steel sheets, and laminated by steps. It is advantageous in low loss, low noise, low voltage partial discharge and high anti short-circuit capacity. The dynamical and thermal stability of this transformer, of which the coils are winded by high-quality oxygen-free copper wire as well as used pre-compressing brackets processes and interior and exterior structure. The transformer tank used wave form shell, has very nice appearance, the core is with D shape yoke and 45 angle seaming. The core and oil box are well fixed and well protected on moving.

31500-180000/220 combined type transformer technical parameter

Ratedpower (kVA)	Valtage		Connction	9 loss(kW)		10 loss(kW)		11 loss(kW)		No-load Loss(%)	Impedence Voltage(%)
	H.V(kV)	L.V(kV)		No-Load Loss	Load Loss	No-Load Loss	Load Loss	No-Load Loss	Load Loss
31500	220 ±8×1.25%	6.3	YNd11	38	135	34.2	128.3	30.4	128.3	0.7	12-14
40000		10.5		45	157	40.5	149.2	36	149.2	0.63
50000		35		54	189	48.6	179.6	43.2	179.6	0.56
63000		38.5		63	220	56.7	209	50.4	209	0.56
90000		10.5		80	288	72	273.6	64	273.6	0.49
120000		11		99	346	89.1	328.7	79.2	328.7	0.49
150000		35		116	405	104.4	384.8	92.8	384.8	0.42
180000		38.5		135	468	121.5	444.6	108	444.6	0.42