MIL-STD-1399-300B
TABLE V. Three-phase system voltage spike test conditions.
Spike peak (including fundamental AC voltage waveform) |
Conductor-to- ground |
Synchronization angle |
Polarity |
Source dampening impedance |
2,400 to 2,500 V peak (440 Vrms systems) or 900 to 1,000 V peak (115 Vrms systems) |
Line A |
0° |
positive |
1 ohm |
90° |
positive |
|||
0° |
negative |
|||
270° |
negative |
|||
Line B |
0° |
positive |
||
90° |
positive |
|||
0° |
negative |
|||
270° |
negative |
|||
Line C |
0° |
positive |
||
90° |
positive |
|||
0° |
negative |
|||
270° |
negative |
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