Detaching And Installing The Plug-In Unit - ABB REU 610 Operator's Manual

1MRS755971
4.4.2.
Fig. 4.4.2.-1 Detaching a plug-in unit from the case
Voltage Relay
Operator's Manual - ANSI Version

Detaching and installing the plug-in unit

Before detaching the plug-in unit from the case, the auxiliary
voltage must be disconnected.
To detach the plug-in unit:
1. Lift the lower handle until the spring-loaded locks on both sides of the
handle are released and the unit is pushed about 6 mm out of the case. This
separates the connectors.
2. Pull the unit out of the case.
Signal connectors are left open when the plug-in unit is detached.
Before fitting a relay plug-in unit into a relay case, check that the
unit and the case have the same order number.
The order number of the case is printed on the bottom plate inside the case.
However, if a substitute plug-in unit has to be used instead of the original
unit, ensure that at least the first 10 characters in the order numbers of the
case and the plug-in unit are identical, as in the following example:
Order number of the relay case
Order number of the plug-in unit
REU610AVVHCHP XX
REU610AVVHCHR XX
REU 610
A040166
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