Transmission Line Type Surge Arrester high Voltage Gapless Lightning Arrester
General Introduction:
Zinc oxide arrester is a lightning protection device with superior protection performance, light weight, pollution resistance and stable performance. It mainly uses the good non-linear volt-ampere characteristics of zinc oxide to make the current flowing through the arrester at normal working voltage very small (microamp or milliampere level); when the overvoltage acts, the resistance drops sharply, venting the overvoltage Energy, to achieve the effect of protection. The difference between this kind of arrester and the traditional arrester is that it has no discharge gap, and uses the non-linear characteristics of zinc oxide to discharge and break.
Normal operating conditions for Lightning Arrester :
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.
Gapless Arrester Electrical Parameter：
| MOA Type |
MOA Rated
Voltage
|
MCOV |
Max.Residual Viltage |
2ms square
wave impulse
withstand current |
High current
impulse withstand
4/10μs |
|
Steep current
impuise1/10μS
|
Lightning current
lmpulse 8/20μs
|
Switching current
lmpulse30/60μs
|
| KV |
KV |
KV |
KV |
KV |
A |
KV |
| YH5W-24 |
24 |
19.5 |
82 |
72 |
62.6 |
150 |
65 |
| YH10W-24 |
24 |
19.5 |
75 |
65 |
61.6 |
520 |
100 |
