CPSP-U unit – a voltage circuit breaker – serves for CPSP/CPSS control units to be switched off from 28V board network if the board network is in undervoltage and/or overvoltage.
CPSP-U unit – a voltage circuit breaker – switches off CPSP/CPSS control units form 28V board network as follows:
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Undervoltage Swich Off
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Overvoltage Switch Off