Temperature is one of the important factors affecting the size of the lightning protection leakage current. Temperature rises, the leakage current will increase. Temperature rise makes the lightning arrester heat dissipation is not timely, the resistance piece temperature will also increase, it will cause the lightning arrester resistance current enhancement.
The external dirt of the lightning protector, such as dust, etc. will affect the resistive sheet column voltage distribution, resulting in increased leakage current of the lightning protector.
The higher the humidity in the air, the higher the leakage current of the lightning arrester will be. The harmonic content in the voltage at both ends of the lightning protector will have an impact on the measured value of the lightning protector leakage current, especially when using a leakage current measuring instrument manufactured according to the principle of the harmonic method.
4. Equalizing ring:
If the lightning protector is not installed equalizing ring, the lightning protector leakage current value will generally be large.
5. high-voltage connection wire:
Lightning arrester installed in the high-voltage conductor, if the field strength of the high-voltage conductor surface over, the air of the high-voltage conductor will be ionized, further affecting the lightning arrester leakage current.