Zinc Oxide Surge Arrester

Zinc Oxide Surge Arrester

Zinc oxide surge arrester is designed to protect rated voltage up to 220kv power transmission & distribution system from over-voltage. Zinc oxide surge arrester is long life, light weight, easy installation and maintenance....

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Zinc Oxide Surge Arrester

Description

Zinc oxide surge arrester is designed to protect rated voltage up to 220kv power transmission & distribution system from over-voltage. It has long life, light weight, easy installation and maintenance. Due to good nonlinear volt-ampere characteristics of zinc oxide, the current flowing through the arrester at normal operating voltage is extremely small (microampere or milliampere). When the overvoltage is applied, the resistance drops sharply, and the energy of the overvoltage is released to achieve the protection effect.

Technical Specification

Rated voltage:

9kV

Continuous operating voltage:

7.65kV

Creepage distance:

330mm

DC 1mA reference voltage:

14kV

The leakage current of 0.75-fold U1mA reference voltage:

≤ 30μA

Frequency 1mA reference voltage:

≥ 9kV

Continuous operating voltage resistive current:

≤ 200μA

4/10µ s high current impulse withstand:

100kA

8/20µ s lightning current impulse:

≤ 25kV

2000μs square wave current impulse withstand:

250A

Usual Service Condition

1. The ambient air temperature is no higher than +40°C, no lower than -40 °C .

2. The altitude above sea level does not exceed 1000m. ( the plateau area should be indicated when order.)

3. AC system frequency is 50Hz or 60Hz.

4. Power frequency voltage brought to bear on arrester for a long time does not exceed the continuous operation voltage of the arrester.

5. Maximum wind speed does not exceed 35m/s.

6. Te earthquake intensity does not exceed 7 degrees.

7. The pollution area should be indicated. 

FAQ

Q1: Do you have a catalogue? Could you send the catalogue to have a check of all your products?"

A: Yes, please contact us on line or send an email to get catalogue.

Q2: I cant find the product on your catalogue, can you make this product for me?

A: Our catalogue shows mostly products, but not all. We can design and make a new mould to produce it. 

Q3: How long the product warranty?

A: The warranty for the product normally is 18 months . If you have any technical problem, warmly reception with the calling, visiting and letters.

Q4: What kind of payment do you accept ? Can I pay RMB ?

A: We accept T/T(Wire transfer), Western Union and L/C at sight. And you can pay money In RMB from abroad.

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