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REJ 513
2.1.7.4
2.2
2.2.1
50
User's Guide
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
All external circuits are connected to the terminals on the rear panel of the relay.
Terminals X1.1-_ are dimensioned for one 0.5...6.0 mm
wires and terminals X2.1-_ for one 0.08...2.5 mm
The energizing currents of the overcurrent unit are connected to terminals X1.1/1-2,
X1.1/4-5 and X1.1/7-8 when the rated current of the CT secondary circuits is I
When the rated current of the CT secondary circuits is I
X1.1/4-6 and X1.1/7-9 are used. The relay can also be used in single-phase or two-
phase applications by leaving one or two energizing inputs unoccupied.
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 contacts with switches 1 and 2 of switchgroups SGR1...SGR4. On delivery from
factory the trip signals of all the protection stages are routed to both the PO1 and PO2
contacts.
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...SGR4. 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 contact is energized under normal operating conditions
and contact gap X2.1/13-15 is closed. If a fault is detected by the self-supervision
ABB Substation Automation
Products and Systems
2
wire or for two max 2.5 mm
2
wire or for two max 1.5 mm
= 1 A, terminals X1.1/1-3,
n
1MRS750613-MUM
2
2
wires.
= 5 A.
n
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