56
Preparing for test Chapter 10
Verifying settings by secondary
injection
Figure 7: Connection of the test set to the REx 5xx terminal.
2.5 Verifying the connection and the analog inputs
The user must verify that the connection and that the analog signals are measured cor-
rectly.
Procedure
1. Inject a symmetrical three-phase current and voltage at rated
value.
2. Compare the injected value with the measured value.
The phasor menu is located in the local-HMI under:
ServiceReport/Phasors/Primary and Secondary
Consider set ratio factors for CT’s and VT’s.
3. Compare the frequency reading with the set frequency and
the direction of the power with the injected power.
The frequency and active power are located in the local-HMI un-
der:
L1I
L2I
L3I
NI
L1U
L2U
L3U
NU
IL1
IL2
IL3
U1
IN (I4,I5)
TRIP L1
TRIP L2
TRIP L3
RELAY TEST SET
REx 5xx
en01000162.vsd
U2
U3
UN
(U4,U5)
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