27KV zno Lightning Surge Arresters

Specifications

Appliation:
The ZnO arrester is mainly used to protect distribution transformer, cable connector and electric equipment from being damaged by lightning impulse voltage and operated over-voltage

Brief Introduction:

Lightning arrester (surge arrester) housed in porcelian and polymer housings, is developed to protect switchgear, overhead lines, transformers, and other equipment against atmospheric or a system-immanent over-voltage.

In medium-voltage distribution systems the arresters are widely spread over the whole network as they are normally directly arranged either, for instance, at the pole-mounted transformers, or at the cable terminations.

Specifications:
1) MOA rated voltage:27KV
2) MCOV:22KV
3) 1/10μs steep current impulse:84KV
4) 8/20μs lightning current impulse:74KV
5)30/60μs switching current impulse:63.5KV
6) 2ms rectangular current impulse withstand:250A
7) 4/10μs high current impulse withstand:100KA

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

PHOTOS: