Xi' an cos photography lightning protection

Lightning arrester has no energy consumption index parameters.

Because mov has leakage current, it consumes electric energy.

The three-phase SPD is installed between L, N and PE, so the calculation is as follows:

Single module: p = ui× COSφ = 220× 30× 0.00000 1 = 0.0066 w u is voltage and phase current, and cos φ is1.

Three modules: p = 3× UI× COS φ = 3× 220× 30× 0.000001= 0.0198 watts.

The current of MOV flowing through the valve plate under the nominal continuous working voltage is called leakage current. According to the national standard, it should be less than 30μA a, and the change rate before and after impact should be less than 200%.

In addition, gap SPD has no leakage current. It should not consume energy.