Detachable Plug-In Unit; Identifying The Product; Detaching And Installing The Plug-In Unit - ABB REM 610 Operator's Manual

1MRS 752264-MUM
3.4.
3.4.1.
3.4.2.
Motor Protection Relay
Operator's Manual

Detachable plug-in unit

Identifying the product

The order number is found on a label under the lower handle of the relay.
Warning!
!
When checking the order number of the relay plug-in unit, be
careful not to lift the handle beyond 25
the handle any further will detach the plug-in unit from the case.
°
α = 25
y = 40 mm
a
y
Fig. 3.4.1.-1 Checking the order number of the relay

Detaching and installing the plug-in unit

Prior to detaching the plug-in unit from the case, the auxiliary voltage must be
disconnected. To detach the plug-in unit, 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 will separate the connectors and you can easily pull the unit out of
the case.
The relay features an automatic short-circuit mechanism in the current transformer
(CT) connector. Therefore, detaching the plug-in unit will not open the secondary
circuit of the CT which otherwise could cause dangerously high voltages.
Signal connectors will be left open when the plug-in unit is detached.
Fig. 3.4.2.-1 Detaching the plug-in unit from the case
REM 610
°
(approx. 40 mm). Lifting
35