ABB RELION REL670, Руководство по установке и пусконаладке

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Making the electrical connection Chapter 5
Installing the IED
4.3 Connecting the auxiliary power and signal connectors
4.3.1 Connecting the auxiliary power and signal connectors
Auxiliary power and signals are connected using voltage connectors. Signal wires are connected
to female connector see
figure 15 , which is then plugged into the corresponding male connector
see figure 16 , located at the rear of the unit.
If the IED is equipped with a test-switch of type RTXP 24 COMBIFLEX wires with 20 A sock-
ets, 1.5mm
2
(AWG16) conductor area must be used to connect the auxiliary power.
Procedure
1. Connect signals to the female connector
All wiring to the female connector should be done before it is plugged
into the male part and screwed to the case. The conductors can be of rigid
type (solid, stranded) or of flexible type.
The female connectors accept conductors with a cross section area of
0.2-2.5 mm
2
(AWG 24-14). If more than one conductor is used in the
same receptacle, the maximum permissible cross section area is 0.2-1
mm
2
(AWG 24-18).
If two conductors, each with area 1.5 mm
2
(AWG 16) need to be connect-
ed to the same socket receptacle, a ferrule must be used, see figure 17 .
This ferrule, is applied with crimping pliers. No soldering is needed.
Wires with a smaller gauge can be inserted directly into the female con-
nector receptacle and the fastening screw shall be tightened with a torque
of 0.4 Nm (This torque applies to all binary connector blocks).
2. Plug the connector to the corresponding back-side mounted recep-
tacle
3. Lock the connector to the receptacle by fastening the lock screws
Figure 15: A female connector
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