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Terminal retractable cable 66 kV~220kV

Cross Bonding Link Box

Type/Applications: Cross Bonding Link Box: WJC

Type/Applications: Cross Bonding Link Box: WJC

Overview

Overview Dimensions

Product Introduction

Cross bonding link box is used for cross interconnection of high-voltage single-core cable metal sheath, limiting over voltage applied to cable sheath and both insulated part ends of insulated joint, controlling induced voltage on metal sheath, reducing or eliminating ring current on cable sheath, increasing transmission capacity of power cable, avoiding oversheath breakdown, to ensure a safe operating for per cable. With stainless steel enclosure, link box could be filled by resin inside, at the main time, link box is volume-small, weight-light, installation-easy and limiter removable. 

 

Main Electrical Property of Link boxes

No.

Test Item

Technical Requirements

1

DC voltage withstand test

Nether breakdown nor flashover shall occur at 20kV for 1 min

2

Impulse voltage test

Nether breakdown nor flashover shall occur at 10 positive and 10 negative impulse of 40kV (peak value)

3

Insulation resistance test between copper bar and housing

Not less than 20MΩ

4

Contact resistance test of copper bar

Not less than 20μΩ

 

Main Electrical Property of SVL

No.

Test Item

BHQ-7/600

BHQ-10/600

1

DC 1mA reference voltage

4kV

5.8kV

2

Rectangular wave capacity

600A

600A

3

Residual voltage ratio

K≤2

K≤2

4

Current capacity

100kA

100kA

5

Rated voltage

2.8kV

4kV

6

Residual voltage of nominal discharge current

≤7kV

≤10kV

 

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Shenzhen Woer Heat - Shrinkable Material Co., Ltd.
Tel: +86 755 28299160  Email：woer@woer.cn    woer@woer.com

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