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  Products
Cable Sheath Voltage Limiters  
Read:1514  2013-8-26

 

 

Product Introduction
The cable protector shell is used in JDBX grounding protection box, JCHX cross inter-connection boxes. It is the core components of the two products. It’s made of ZnO varistor valve plates, electrodes, internal/external insulation. It restricts induction over-voltage on the cable metal sheath, ensuring that the sheath insulation would not breakdown by over-voltage.

Product Characteristics:
The core protective elements is using ZnO varistor plates, electrode sprayed aluminum, which makes it contact well without series gap. It has good protection features and excellent voltage characteristic curve (picture below, right).

Use epoxy fiberglass as internal insulation, insulating silicone rubber material as external insulation with superior electrical performance and good self-sealing performance.

 

 

 

 

No.

Testing Item

Type and Requirements

BHQ-6

BHQ-12

1

D.C. 1mA reference voltage (kV)

3.8

4.5

7.6

2

2ms Square Wave Impulse Voltage 18 times(A)

600A

3

0.75U, 1mA leakage current

30

4

8/20μs/10kA impulse current

7

9.5

14

5

4/10μs heavy current 100kA impulse

twice

6

Residual voltage ratio

2

2.5

2

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