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REU 513
50
User's Guide
Output contacts SO1 and SO2 can be used for signalling on operation of the relay.
The signals to be routed to the output contacts SO1 and SO2 are selected with
switches 3 and 4 of switchgroups SGR1...SGR8. On delivery from factory the start
signals of all the protection stages are routed to both the SO1 and SO2 contacts.
Output contact IRF functions as an output contact for the self-supervision system of
the protection relay. The IRF relay is energized under normal operating conditions
and contact gap X2.1/13-15 is closed. If a fault is detected by the self-supervision
system, or on loss of the auxiliary supply, the output contact drops off and contact
X2.1/13-14 closes.
In the picture below, a rear view of the relay, showing the connecting sockets.
Fig. 2.2.1.-1 Rear view of the combined overvoltage and undervoltage relay
Table 31: Inputs for voltages
Terminal
X1.1-1
X1.1-3
X1.1-4
X1.1-6
X1.1-7
X1.1-9
*Note!
The wiring has to be done identically for each of the matching transformers used.
Function
U
*
12
U
12
U
*
23
U
23
U
*
31
U
31
ABB Substation Automation
Products and Systems
1MRS750886-MUM
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