Is specialized in designing, manufacturing for power transformers ,furnace transformers and reactor.

Type WST5 Three Phase Off Load Tap Changer (delta connection) 1

Type WST5 Three Phase Off Load Tap Changer (delta connection) 2

Type WST5 Three Phase Off Load Tap Changer (delta connection) 3

Type WST5 Three Phase Off Load Tap Changer (delta connection)

Type WST5 three phase tap changer (delta connection)

- Used in mineral oil or silicon oil

- Rated Voltage 10KV-36KV

- Rated current from 63A-250A

- Tapping position: 3-7

- Regulation 2.5% per position

Model Explanation
WST □ - □/□-□╳□
W: off-circuit
S : three-phase or D for single phase
T : linear type tap changer
□: voltage regulation model
□: rated current
□: rated voltage
□: number of tapping heads
□: number of tapping position

Voltage Regulation Model
I : terminal point
II : central point
III : neutral point
IV : Y-△ conversion
V : series-parallel connection

Our Advantage

* High pressure capability
* Strong anti-aging ability
* Strong anti-lightning impact
* Strong protection
* Use smoothly
* Stable use

Number of positions	Rated voltage	Rated current	L	L1	L2	L3	L4	L5	H	H1	φD1	Regulating position
3	10 kV	63A	362	139	122	59	99	24	100	78	90	Neutral point
		125A	394	149	133	59	107	29	100	78
		250A	394	149	133	59	112	29	100	78
	24 kV	63A	362	139	122	59	99	24	120	98
		125A	394	149	133	59	107	29	120	98
		250A	446	169	144	59	112	34	120	98
	36 kV	63A	362	139	122	59	103	24	140	118
		125A	424	159	143	59	107	34	140	118
		250A	424	159	143	59	112	34	140	118
5	10 kV	63A	506	187	170	59	99	24	100	78
		125A	568	207	191	59	107	29	100	78
		250A	568	207	191	59	112	29	100	78
		300A	628	227	211	59	112	34	106	78	105
	24 kV	63A	506	187	170	59	100	24	120	98	90
		125A	568	207	191	59	107	29	120	98
		250A	628	227	211	59	112	34	120	98
	36 kV	63A	506	187	170	59	103	24	140	118
		125A	628	227	211	59	107	34	140	118
		250A	628	227	211	59	112	34	140	118
7	10 kV	63A	650	235	218	70	110	24	100	78
		125A	742	265	249	70	118	29	100	78
		250A	742	265	249	77.5	123	29	100	78
9		63A	796	283	267	70	110	24	100	78

Number of positions	Rated voltage	Rated current	L	L1	L2	L4	L5	H	H1	H	Regulating position
3	10 kV	63A	450	174	145	99	24	180	78	70	Central
		125A	519	201	172	107	29	180	78	70
		250A	519	201	172	112	29	180	78	70
		300A	620	242	189	112	34	185	78	70
	36 kV	63A	486	194	145	103	24	210	98	80
		125A	571	222	177	107	29	210	98	80
		250A	571	222	177	112	29	210	98	80
5	10 kV	63A	594	222	193	99	24	180	78	70
		125A	693	259	230	107	29	180	78	70
		250A	693	259	230	112	29	180	78	70
		300A	824	310	257	112	34	185	78	70
	36 kV	63A	630	240	195	103	24	210	98	80
		125A	745	280	235	107	29	210	98	80
		250A	745	280	235	112	29	210	98	80

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