Cross Bonding Link Box

Negotiable
China
Room 301, Woer Industrial Plant, Building 6-1, Qingsong Road No. 53, Zhukeng Community, Longtian Street, Pingshan District, Shenzhen, China
15814620079
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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 shield-break 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 mean time, link box is volume-small, weight-light, installation-easy and SVL removable.

Type/Applications:

Cross Bonding Link Box: WJC

Product Parameters

Main Electrical Properties of Link Boxes

Test Item Technical Requirements
DC voltage withstand test Neither breakdown nor flashover shall occur at 20kV for 1min
Impulse voltage test Neither breakdown nor flashover shall occur at 10 positive and 10 negative impulse of 40kV (peak value)
Insulation resistance test between copper bar and housing Not less than 20MΩ
Contact resistance test of copper bus bar No more than 20μΩ

Main Electrical Properties of SVL

Test Item BHQ-7/600 BHQ-10/600
DC 1mA reference voltage 4kV 5.8kV
Rectangular wave capacity 600A 600A
Residual voltage ratio K≤2 K≤2
Current capacity 100kA 100kA
Rated voltage 2.8kV 4kV
Residual voltage of nominal discharge ≤7kV ≤10kV