ZW68-12 Eco-friendly Shared-box Type (Joint Development)
Negotiable
China
No.12 Hongtai Road, Huaming Street, Dongli District, Tianjin City
15822469629
Online Contact
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Product Introduction

The ZW68-12 product is a shared-box pole-mounted switch circuit breaker, featuring built-in isolation break, eco-friendly SF6-free gas design, and high protection rating advantages.

Led by the State Grid Equipment Department, with specific implementation by the China Electric Power Research Institute, and jointly developed by 31 domestic mainstream complete set enterprises, it aims to address issues such as external isolation breaks and unreliable sealing in existing vacuum-type pole-mounted switches.

Product Parameters

No.

Project Name

Unit

Parameters

1

Rated voltage

kV

12

2

Rated frequency

Hz

50

3

Rated current

A

630

4

Rated short-time power frequency withstand voltage (1min, effective value)

Interphase, to the ground

kV

42

fracture

48

5

Rated lightning impulse withstand voltage (peak)

Interphase, to the ground

kV

75

fracture

85

6

Rated short-circuit breaking current (effective value)

kA

20/25

7

Rated short-circuit closing current (peak)

kA

50/63

8

Rated short-time withstand current

kA

20/25

9

Rated peak withstand current

kA

50/63

10

Rated short circuit duration

S

4

11

Rated short-circuit current breaking times

Times

30

12

Rated cable charging breaking current

A

25(C2)

13

Rated operating sequence

 

O-0.3s-CO-180s-CO

14

Mechanical life

Times

10000

15

Protection grade of mechanism box

 

IP67

16

Interphase center distance

mm

135±2

17

Main circuit resistance

μΩ

≤ 120

18

Weight

kg

200