IMMEDIATE READY FOR A DYNAMIC, UNINTERRUPTIBLE POWER SUPPLY
DE2848413A1
METHOD FOR THE LOAD-RELATED SWITCHING ON AND OFF OF SEVERAL PARALLEL-OPERATED POWER SUPPLY UNITS IN A POWER SUPPLY SYSTEM
CA1105999A
Arrangement for monitoring a current network
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Safety cut=out system for sync. machine supply - operates by detection of zero transitions across load element
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Mains failure monitor used with three=phase sync. machine - has transformer between star point and neutral and frequency relay detecting voltage zero crossings for signalling too low frequency
DE1918146A1
Arrangement for the delivery and return of fuel for an airfield tanker
DE1817129A1
Arrangement for the delivery and return of fuel for an airfield tanker
