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400 hz.airport power problems

400 hz.airport power problems

400 hz.airport power problems

Went to a major international airport yesterday.

When the passenger planes roll up to the gate and stops,temporary airport power is plugged into the plane.

Power is 200 volts 3 phase 4 wire 400 hz.

A new series of airplanes when plugged in to this power source ,electronically refuse to turn on their loads(note: tested this plane at all gates and will not turn on its loads at any of these approx.30 gates).

At other airports ,these new planes have no problems with the airport power.

At this airport all other plane mfrs, have no problem with this airport power.

Other  old link reference is thread593-39120: B747 400Hz Power Supply

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