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A070577 V5 EN
Figure 2:
Detaching a plug-in unit from the case
The protection relay features an automatic short-circuit mechanism in
the CT connector. Therefore, detaching the plug-in unit will not open
the secondary circuit of the CT which could cause dangerously high
voltages.
Do not touch terminals inside the case after removing the plug-in unit.
Live terminals can be inside the case.
The signal connectors are left open when the plug-in unit is detached.
4.2.2
Installing plug-in unit
The protection relay is constructed in a way that a plug-in unit with voltage- or current-
measuring inputs can only be plugged into a corresponding case. This prevents fitting
an unsuitable plug-in unit into a wrong case.
Before fitting the plug-in unit into the case, check that the unit and the
case have the same serial number.
Section 4
1MRS757799 C
Mounting
12
REC615 and RER615
Installation Manual