DIFF Subgroup
H02J 9/04 in which the distribution system is disconnected from the normal source and connected to a standby source
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
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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