Substation Lightning Spark Arrester HY5WZ-51/134

Specifications

Appliation:

Substation lightning arrester is used to protect AC electrical equipments of power plant and transformer substation from being damaged by atmosphere over-voltage and operation over-voltage.

Brief Introduction:  

The metal zinc oxide arrester is a high-tech product in the mid 1990s in the world. Its main component, metal zinc oxide (MO) resistors have extremely excellent non-linear voltage-current or U-I characteristic. Therefore, compared with traditional SiC arrester, it has been largely improved in the performance of steep wave, lightning wave and operation wave.

In detail, MO resistors have good characteristics, such as good steep wave response, no delayed steep wave voltage, low operation residual voltage and no discharge dispersibility. It overcomes the shortcomings of SiC arresters: high discharge voltage under steep wave resulted from delayed steep wave discharge, high discharge voltage under operation wave resulted from operation wave discharge dispersibility.

Technical  Parameter:

Normal service conditions:

1.The ambient air temperature is no higher than +40 degree. no lower than -40 degree.

2.The altitude above sea level does not exceed 2000m

3.Power frequency 48Hz~62Hz

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

5.The earthquake intensity does not exceed 7 degrees

6.The voltage that long-time exerted shouldn't exceed its Max MCOV

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