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Power network monitoring device for diagnosis of phase failure in multiphase supply system, using time shift of zero-crossing point of delta voltage or star voltage of multiphase supply
Power network monitoring device for diagnosis of phase failure in multiphase supply system, using time shift of zero-crossing point of delta voltage or star voltage of multiphase supply
The monitoring device includes a device for detecting phase failure and providing a diagnosis using a time shift of the zero-crossing point of at least one delta voltage or star voltage of the multiphase supply system. The time shift is preferably within or outside a time window. A measuring circuit (2,3,4) triggers a fault alarm when phase failure or phase amplitude reduction is detected. An independent claim is included for a method of diagnosing a phase failure for a network monitoring device.
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