De-energized linear tap changer

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0102030405

WST de-energized, combined, linear tap changer. Star-delta ZH2 Opening dimensions Φ43

The tap changer is specifically designed for triple-phase oil-insulated transformers operating at frequencies of 50Hz and 60Hz. It is suitable for transformers with a maximum equipment voltage of 10kV and 24kV, and a rated through-current of 30A and 63A. The tap changer can be conveniently fixed on the transformer tank cover and replaced when the transformer is not energized.

product details

Model Meaning

Advantages

1. The tap changer is designed with a reasonable structure, ensuring a small size and low requirements for installation space.

2. The tap changer features a gear shifting design that offers flexibility, precise positioning, and the ability to effortlessly meet diverse needs, resulting in efficient control.

3. The tap changer is equipped with a low contact resistance, which ensures the circuit operates with stability and efficiency.

4. The tap changer is manufactured following standardized production processes and can be customized according to individual requirements. It offers cost savings while ensuring the same level of quality.

Details

Phase	Triple
Rated voltage	10kV，35kV
Rated current	63A～250A
Voltage regulation	0.025
Tapping positions	3～5

Voltage Regulation Principle

Outline

No.			Install dimension mm
	Model No.	Regulating position	L	L1	L2	L4	L5	L6	H	H1	H2
1	WSTⅣ63/10-4×3ZH2	Y-△ Central	478	188	145	99	24	34	180	78	70
2	WSTⅣ125/10-4×3ZH2		705	265	220	107	29	70	180	78	70
3	WSTⅣ250/10-4×3ZH2		705	265	220	112	29	70	180	78	70
4	WSTⅣ63/35-4×3ZH2		705	265	220	103	29	70	210	98	80
5	WSTⅣ125/35-4×3ZH2		705	265	220	107	34	70	210	98	80
6	WSTⅣ250/35-4×3ZH2		705	265	220	112	34	70	210	98	80
7	WSTⅣ63/10-6×5ZH2		622	236	193	99	24	34	180	78	70
8	WSTⅣ125/10-6×5ZH2		705	265	220	107	29	70	180	78	70
9	WSTⅣ250/10-6×5ZH2		705	265	220	112	29	70	180	78	70
10	WSTⅣ63/35-6×5ZH2		755	285	235	103	29	70	210	98	80
11	WSTⅣ125/35-6×5ZH2		755	285	235	107	34	70	210	98	80
12	WSTⅣ250/35-6×5ZH2		755	285	235	112	34	70	210	98	80

Voltage Regulating Schematic

Outline Drawing

No.	Model No.	Regulating position	Install dimension mm
			L	L1	L2	L4	L5	L6	L7	H	H1	H2	H3	ΦC
1	WSTⅣ63/10-4×2ZH2	Y-△ Central	576	222	177	99	34	24	-----	180	78	70	67	80
	WSTⅡ63/10-4×3
2	WSTⅣ63/10-4×2ZH2		622	236	193				-----
	WSTⅡ63/10-6×5
3	WSTⅣ125/10-4×2ZH2		688	256	216	107		29	-----	185
	WSTⅡ125/10-4×3
4	WSTⅣ125/10-4×2ZH2		912	334	289	107/118	70		11
	WSTⅡ125/10-6×5
5	WSTⅣ250/10-4×2ZH2					112/123			11
	WSTⅡ250/10-4×3
6	WSTⅣ250/10-4×2ZH2								11
	WSTⅡ250/10-6×5
7	WSTⅣ300/10-4×2ZH2		1064	410	327			34	11				75	105
	WSTⅡ300/10-6×5