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Company name: henan pinggao electric co. LTD

Address: Henan province of pingdingshan city

south ring road 22

Mail editor: 467000
E -  mail : pinggao@pinggao.esgcc.com.cn

400-6700-312

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JW8B-550 type Disconnector

Description

JW8B-550 type Disconnector

Brief Description

In 550KV lines, the double circuit transmission line towers are often used, in the maintenance of one of the circuit, due to normal operation, the other line will have an electromagnetic induction and electrostatic induction. So, the earthing switch, which is used on the into line side and outlet side of the transformer substation or which is to match the disconnector, should have the ability to open and close the electromagnetic induction and electrostatic induction to some extent.

Since March 2005, our company started to research and develop such earthing switch, on December 30th, 2005, JW8B-550 earthing switch developed by our company passed all the test items in xi 'an high voltage electric institute. Its technical parameters is far higher than the international requirements, reached the international advanced, the domestic leading level.

The main technical parameters

Items

Specifications

 Unit

Value

1

Rated voltage

kV

550

2

Rated frequency

Hz

50

3

Rated short-time withstand current

kA

3

4

Rated short-time resistance current duration

s

3

5

Rated peak withstand current

kA

10

6

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

kV

80

7

Rated lightning impulse withstand voltage

kV

1550

8

Rated operating impulse withstand voltage

kV

1175

9

Open and close electromagnetic induction current (rated induction voltage 35KV)

A

4000(international requirement 160A)

10

Open and close the electrostatic induction current (rated induction voltage 50KV)

A

50(international requirement 25A)

11

radio interference level

μV

≤2000

12

Rated terminal static mechanical load

N

Longitudinal 4000 Horizontal 2000
Vertical 1500

13

 Mechanical life

time

3000

14

The maximum operating force of earthing switch

N

150

15

The operating mechanism of earthing switch

 

CJ11 electric mechanism

16

Opening and closing time

s

12±2

17

Installation direction of earthing switch

 

With the busbar parallel or vertical

 

Corresponding parameter set not found, please add it in property template of background
暂未实现,敬请期待
暂未实现,敬请期待
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