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ABB Substation Automation
Products and Systems
2.1.7.4.
2.2.
2.2.1.
1MRS750886-MUM
User's Guide
Table 30: Outputs
Operation of output contacts
Output PO1
Output PO2
Output SO1
Output SO2
Enabling output contacts PO1,
PO2, SO1 and SO2
Relay parameterization
The Relay Setting Tool is used for parameterizing the relay units. The parameters
can be set off-line in a PC and downloaded to the relay over a communication port.
Design description
Input / output connections
The energizing voltages are connected to terminals X1.1/1-3, X1.1/4-6 and X1.1/7-
9. The nominal voltage (100/ 110/ 115/ 120 V) of the matching transformers has to
be selected with SPA parameter V134. The relay can also be used in single-phase
applications by setting a switch in one of the software switchgroups.
The binary input X2.1/17-18 can be used in three different ways: 1) as the binary
input for an external blocking signal, 2) as the binary input for unlatching the trip
relay, or 3) as the binary input for the remote control of relay settings. The requested
function is selected with the switches of switchgroup SGB. The binary input can also
be used as a trigger signal for the disturbance recorder; this function is selected with
SPA parameter V243.
The auxiliary supply voltage of the relay is connected to terminals X2.1/1-2. At dc
supply the positive lead is connected to terminal X2.1/1. For further details, see the
description of the auxiliary voltage. The permitted auxiliary voltage range of the
relay is marked on the front panel of the relay.
Output contacts PO1 and PO2 are heavy-duty trip contacts, capable of controlling
most circuit breakers. The operate signals of different protection stages are routed to
the relays with switches 1 and 2 of switchgroups SGR1...SGR8. On delivery from
factory the trip signals of all the protection stages are routed to both the PO1 and
PO2 contacts.
State of output
Recorded
(R,W,P)
functions (R)
O9
O29
O10
O30
O11
O31
O12
O32
O41
-
REU 513
Value
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
49
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