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 ZW7-40.5 series outdoor high-voltage vacuum circuit breakers 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