with automatic change-over

Introduced: September 1968

Full Title

Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting > in which the distribution system is disconnected from the normal source and connected to a standby source > with automatic change-over

CPC subdivides this area 6x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

Child Classifications

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H02J 9/061 CPC only CPC only
H02J 9/062 +2 CPC CPC only CPC only
H02J 9/066 CPC only CPC only
H02J 9/067 CPC only CPC only
H02J 9/068 CPC only CPC only
H02J 9/08 requiring starting of a prime-mover IPC+CPC Available in IPC and CPC