1MRS751802-MUM
REX 521
183
Protection Relay
Technical Reference Manual, Standard Configurations
10.2.2. Measurement connections
The three-phase current transformers and residual voltage transformers are
connected to the connector X1.1 on the rear panel. The rated currents of the
measuring input are 1 A and 5 A. The rated values for the voltage are 100 V,
110 V, 115 V and 120 V.
Fig. 10.2.2.-1 Connection diagram for the standard configuration M01 for
protection of an incoming feeder and as back-up protection of the
outgoing feeders
The technical data of the current transformers and the voltage transformer are set via
the Relay Setting Tool or the local HMI. The settings can be found in
Main menu\Configuration\Meas. devices\. Refer to
REX 521
Technical Reference Manual, General
(see Section 1.5. Related documents) for
further information about how to set the rated currents and voltage.
REX 521
5
0,2
v
100V
Uo
b
A
N
da
dn
MeasConn
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