百乐彩手机版app下载-百乐彩娱乐官网下载

Home >  Product & Service >  Products >  Medium Voltage Switch Element

  • ZW7-40.5 Outdoor High Voltage AC Vacuum Circuit Breaker
Medium Voltage Switch Element

ZW7-40.5 Outdoor High Voltage AC Vacuum Circuit Breaker

ZW7-40.5 outdoor high voltage AC vacuum circuit breaker is a three-phase AC outdoor high voltage ...

  • Product Introduction
  • Product Features
  • Technical Parameters

Product Introduction

ZW7-40.5 outdoor high voltage AC vacuum circuit breaker is a three-phase AC outdoor high voltage power distribution device with the rated voltage of 40.5kV and the rated frequency of 50Hz, used to protect and control load current, over-current and short-circuit current in breaking and closing system in substations or power distribution system of industrial and mining enterprises below the altitude of 1000m, as well as in rural power grid and other places that need frequent operation.

ZW7-40.5 outdoor high voltage AC vacuum circuit breaker conforms to relative regulations of such national standards as GB 1984-2014 High Voltage AC Circuit Breaker, JB/T3855-2008 High Voltage AC Vacuum Circuit Breaker and DL/T 403-2000 Technical Requirements on Ordering 12kV~40.5kV High Voltage Vacuum Circuit Breakers.

 

Product Features

The breaker is mainly composed of support porcelain bushing, aluminium support, vacuum arc extinguishing chamber, insulated tension pole, transmission mechanism,spring actuating mechanism, current transformer, anti condensation device and the box body. 

The vacuum arc extinguishing is installed in the upper porcelain bushing. Electrical insulation silicone grease, a new type of insulating material, is filled in between the arc extinguishing chamber and the porcelain bushing, to prevent condensation. The insulating material has such advantages as good insulation, resistance to aging and outdoor high temperature, therefore preventing against problems caused by filling SF6 or oil and making maintenance and repairing more convenient.
The transmission mechanism has a simple structure, requiring no maintenance and having a long repair cycle.
The insulated tension pole is made by silicon rubber. It has a good insulation performance and strong resistance to dirt.
The spring operating mechanism provides power for opening and closing and performs various ordered sequences. The box body is rain-proof. There are condensation controller and heater installed in the box. Temperature and humidity in the box is automatically adjusted by the condensation controller, protecting electrical controlling components from being condensed and guaranteeing that lubricant of the mechanical transmission system will not be frozen.

The current transformer can achieve three turns-ratios and four levels (0.2S,0.5,10P,10P). 

Technical Parameters

No.

Name

Unit

Data

1

Rated Voltage

kV

40.5

2

Rated Insulation Level

Power Frequency Withstand Voltage(1min) Phase to   Phase, Phase to Earth/ Break

95

Lightning Impulse Withstand Voltage (Peak Value) Phase to Phase, Phase to   Earth/ Break

185

3

Rated Current

A

630 1250 1600 20002500

4

Rated Short-circuit Breaking Current

kA

25

31.5

5

Rated Short-circuit Making Current (Peak Value) 

63

80

6

Rated Peak   Withstand Current

63

80

7

Rated Short-time Withstand Current

25

31.5

8

Rated   Short-circuit Breaking Current Breaking Times (E Level)

Time

30

30

9

Rated Thermal Stability Time

s

4

10

Rated Operative   Sequence

0-0.3s-C0-180s-C0

11

Mechanical Life   (M2 Level)

Time

10000

12

Phase-to-phase Center Spacing

mm

710±2