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Lightning Protector
Protect the DC supply grid overvoltage, can effectively prevent the overvoltage from outside the vehicle (such as lightning strike) and the operating overvoltage inside the vehicle to the vehicle electrical equipment insulation damage.
Detailed introduction
|
nominal voltage of a system Un |
continuous-running voltage Uc |
nominal discharge current In |
Nominal discharge residual voltage of Up |
peak current Ihc |
|
1500 VDC |
2000 VDC |
10kA 8/20 μs |
4.76kV |
100 k 4/10 μs |
|
Rated voltage equal to operating line conditions (IEC 60850) |
EN 50526-1: 2012，4.1： IEC 60850 1.5kV System Umax2 (1950V) |
EN 50526-1:2012, Table 1: Mine Arrester Class DC-B |
EN 50526-3:2012,6.5 The margin between the residual pressure and the rated impact voltage is generally considered. The rated impact voltage of 1.5kV system and OCS connection equipment is 10kV (EN 50124-1, OV3, Table D-1 and Table A-2). Impact voltage> K * residual voltage (K=1.25~1.4), that is, the residual voltage needs to be less than 7.14kV. |
EN 50526-1:2012, Table 7: Mine Arrester Class DC-B |
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