lighting arrester

Keystone:

Lightning arrester is the most advanced over-voltage protector in the world. Its core element, metal oxide varistor (MOV), is made under Japanese technology license.

Under the circumstance of normal operating voltage, the current through the lightning arrester is just on microampere degree. When suffered from over-voltage, the lightning arrester’s excellent non-linear characteristic will make the current through the lightning arrester increase to several thousand amperes. And the lightning arrester will be under the circulating state and release over-voltage energy so as to protecting the power transmission equipments against the damage caused by the over-voltage.

Condition of Use:

1. Ambient air temperature within the range of**0℃to +*0℃;

2. Altitude above sea level not exceeding 2,**0m;

3. Frequency of the A.C. power supply being *0Hz or *0Hz;

4. Power frequency voltage applied continuously between the terminals of the arrester not exceeding its continuous operating voltage;

5. Maximum wind speed not exceeding *5m/s;

6. The earthquake intensity not exceeding 7 degrees.

Characteristics:

-Low residual voltage

-Long protection distance

-High energy capacity

-Stable volt-ampere characteristic even after multiple strokes

-Proof against ageing

-Explosion and shatter-resistant design

-Pollution resistant and UV-stable

-Housing resistant to rough handling

-Maintenance free

-Stable against shock and vibration

-High mechanical resistance