Three Phase Off Load Round Type Tap Changer

This terminal point round type three-phase tap changer is mainly used on oil immersed distribution transformer. A distribution transformer is a transformer that provides the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customer. The invention of a practical efficient transformer made AC power distribution feasible.

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Product Introduction

We have reached more than 30 series and 5000 sorts of specification group. We can satisfy the requirement of tap changer used the voltage of 110KV and less than 220KV transformer. We can also undertake designing and making all kinds of special switches according to the technical parameters, special structure and quality required by the customers.

Samples Technical Data

Specifications		WSP 63	WSP 125	WSP 250
Phase number		three-phases
Connection mode		Central point (Ⅱ) Neutral point (Ⅲ)
Rated through current (A)		63	125	250
Short-circuit capacity	Heat stableness current(KA/2s)	1.6	2.5	3.75
	Dynamic stableness current(KA)	4	6.25	9.375
Rated frequency		50～60
Insulation level(KV)	Rated Voltage	10KV	20KV	35KV
	Power-frequency withstand Voltage（50Hz／1min)	42KV	55KV	95KV
	Impulse（1.2／50μs)	75KV	125KV	250KV
Sealing Performance（KPa/24h）		60
Machine life(Thousands of times)		2

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