The overcurrent level is limited to 200% of the nominal current. Therefore, it cannot be consid-
ered as a short-circuit protection.
4.1.5 Busbar protection (ANSI)
● 2 x over-voltage (59)
● 2 x under-voltage (27)
● 2 x over-frequency (81)
● 2 x under-frequency (81)
4.1.6 Display
● Push-buttons for start and stop
● Push-buttons for breaker operations
● Status texts
4.1.7 M-Logic
● Simple logic configuration tool
● Selectable input events
● Selectable output commands
4.2 Terminal strip overview
4.2.1 Reference to Installation Instructions
Please see the Installation Instructions for terminal strip overview and rear side controller view.
4.3 Measurement systems
The CGC 400 is designed for measurement of voltages between 100 and 480V AC. For further reference, the
AC wiring diagrams are shown in the Installation Instructions. In menu 9130, the measurement principle can
be changed between three-phase, single phase and split phase.
Configure the CGC 400 to match the correct measuring system. When in doubt, contact the
switchboard manufacturer for information about the required adjustment.
4.3.1 Single phase system
The single phase system consists of one phase and the neutral.
The following adjustments must be made to make the system ready for the single phase measuring (example
230V AC):
CGC 400 DRH 4189340786 UK
Functional descriptions
DEIF A/S Page 11 of 96
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