Three Phase High Voltage 35KV 40.5KV Vacuum Circuit Breaker With Transformer

Lugao's independently developed and produced Three Phase High Voltage 35KV 40.5KV Vacuum Circuit Breaker With Transformer is suitable for inter-city power distribution networks, ensuring safe operation of the power grid and providing short-circuit protection. It has good sealing performance and is easy to install and maintain. It has been praised by customers at home and abroad.

Model:ZW7-40.5

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Product Description

Product Introduction

The Three Phase High Voltage 35KV 40.5KV Vacuum Circuit Breaker With Transformers are designed for use in three-phase power systems operating at 50 Hz and a rated voltage of 40.5 kV. They are used to disconnect and connect load current, overload current, and short-circuit current.

Specification

No.	Description			unit	data
1	Rated voltage			KV	40.5
2	Rated insulation level	1min power frequency withstand voltage	Dry test	KV	95
		1min power frequency withstand voltage	Wet test		80
		Lightning impulse withstand voltage (peak)			185
3	Rated current			A	1250；1600；2500
4	Rated short-circuit breaking current			KA	20；25；31.5
5	Rated operating sequence				O-0.3s-CO- 180s-CO
6	Rated short-circuit breaking current cycle			bout	12
7	Rated short-circuit closing current (peak value)			KA	50;63;80
8	Rated peak withstand current			KA	50;63;80
9	Rated short-circuit withstand current			KA	20;25;31.5
10	Rated short-circuit duration			S	4
11	Contact opening distance			MM	22±2
12	Contact opening distance			MM	4±1
13	Average trip speed			M/S	1.5±0.2
14	Average closing speed			M/S	0.7±0.2
15	Contact closure bounce time			MS	≤2
16	Three-phase main breaker (sub)switching synchronization time difference			MS	≤2
17	Closing time			MS	≤150
18	Trip time			MS	≤60
19	Mechanical lifespan			bout	10000
20	Rated operating voltage - Voltage of the auxiliary circuit			V	DC110/220 AC110/220
21	DC resistance of each phase circuit (excluding the transformer)			μΩ	≤100
22	Weight			KG	800