DEMA CPM 310 G User Manual page 21

 Mounting Screws for the Cover
The cover is mounted onto the case via these screws. Screws are embedded and fixed on the case.
 Terminal Plugs
Plugs make the electrical connection by locking to the sockets when the internal unit is drawn into the
case. Secondary current plugs are longer than the auxiliary plugs – this ensures the draw out of the internal
unit safe from unwanted circuit breaker commands induced by the transient signals occurring while the
sockets are disconnecting.
 Lock Pivot
Internal unit locking mechanism locks to this pivot, providing mechanical and contacting stability.
 Current Plugs & Automatic Shorting Bridges
Current plugs provide the electrical connection of the secondary circuit cabling to the internal unit circuits.
When the internal unit is drawn out, the automatic secondary current bridges safely short-circuits the
secondary terminals – by doing this, secondary circuit continuity is provided and open secondary circuit
cases are preventing. This feature enables operators to drive out the internal unit for replacement, testing
or similar purposes while the system is energized.
 Mounting Holes
The relay case is mounted on the panel or rack from these mounting holes. Connection elements needed
for mounting the case is supplied within the product box. □
CPM 310 G: External Unit (Case) – Front View
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