De-energized linear tap changer

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0102030405

WST de-energized, triple-phase, linear tap changer(neutral voltage regulation). Opening dimensions Φ43

Designed for triple-phase oil-insulated transformers, this tap changer is compatible with 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 directly installed on the transformer tank cover and replaced when the transformer is de-energized.

product details

Model Meaning

Advantages

1. With its reasonable structural design, the tap changer has a small size and can be easily installed in spaces with low requirements.

2. Equipped with a flexible gear shifting design, the tap changer enables accurate positioning and effortless adjustment to meet a wide range of needs, achieving efficient control.

3. With its small contact resistance, the tap changer ensures the circuit operates with stability and efficiency.

4. Manufactured using standardized production techniques, the tap changer can be specially designed to meet specific needs. It provides cost savings without compromising on quality.

Details

Phases	Triple
Highest voltage for equipment	10KV-35KV
Rated through-current	63A-300A
Voltage regulation	0.025
Tap positions	3～9

Voltage Regulation Principle

Outline

NO.	Model No.	Regulating position	Install dimension mm
NO.	Model No.	Regulating position	L	L1	H2	L3	L4	L5	H	H1	ΦC	H2
1	WSTⅢ63/10-3×3	Neutral point	356	139	119	59	99	24	100	78	80	67
2	WSTⅢ125/10-3×3		394	149	133	59	107	29	100	78
3	WSTⅢ250/10-3×3		394	149	133	67	112	29	102	78
4	WSTⅢ63/20-3×3		356	139	119	59	99	24	120	98
5	WSTⅢ125/20-3×3		394	149	133	59	107	29	120	98
6	WSTⅢ250/20-3×3		424	159	143	67	112	34	122	98
7	WSTⅢ63/35-3×3		356	139	119	59	103	24	140	118
8	WSTⅢ125/35-3×3		424	159	143	59	107	34	140	118
9	WSTⅢ250/35-3×3		424	159	143	67	112	34	142	118
10	WSTⅢ63/10-5×5		506	187	170	59	99	24	100	78
11	WSTⅢ125/10-5×5		568	207	191	59	107	29	100	78
12	WSTⅢ250/10-5×5		568	207	191	67	112	29	102	78
13	WSTⅢ300/10-5×5ZA		830	650	168	67	115	34	106	78	105	75
14	WSTⅢ63/20-5×5		506	187	170	59	100	24	120	98	80	67
15	WSTⅢ125/20-5×5		568	207	191	59	107	29	120	98	80	67
16	WSTⅢ250/20-5×5ZA		845	523	151	67	112	29	122	98	105	75
17	WSTⅢ63/35-5×5		506	187	170	59	103	24	140	118	80	67
18	WSTⅢ125/35-5×5		628	227	211	59	107	34	140	118	80	67
19	WSTⅢ250/35-5×5ZA		845	523	151	67	117	29	142	118	105	75
20	WSTⅢ63/10-7×7		650	235	218	70	110	24	100	78	80	67
21	WSTⅢ125/10-7×7		742	265	249	70	118	29	100	78
22	WSTⅢ63/10-9×9		796	283	267	70	110	24	100	78