Hitachi Relion 670 Series Commissioning Manual page 154

Section 11
Testing functionality by secondary injection
ZMFPDIS (21). The distance protection and the phase preference logic shall be set to values according
to the real set values to be used. The test is made by means of injection of voltage and current where the
amplitude of both current and voltage and the phase angle between the voltage and current can be
controlled.
During the test the following binary signals (outputs) shall be monitored:
• Trip signal from distance protection
• Trip signal from phase preference logic
1. Connect the test set for injection of voltage and current.
2. Inject voltages and currents corresponding to a phase-to-phase to ground fault within zone 1 of the
distance protection function. In the test one of the current inputs (one of the faulted phases) is
disconnected. The remaining current is the fault current out on the protected line. All combinations of
two phase-to-ground faults with one phase current are tested. The result shall be according to
38. It should be checked that the fault will give phase-to-phase voltage, phase-to-ground voltage,
zero-sequence voltage and phase current so that the conditions set for the logic are fulfilled.
Table 38:
OperMode
No Filter
No Pref
1231c
1321c
123a
132a
213a
231a
312a
321a
11.4.15.3 Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.5 Current protection
11.5.1 Instantaneous phase overcurrent protection 3-phase output
PHPIOC (50)
Prepare the IED for verification of settings outlined in Section
Values of the logical signals for PHPIOC are available on the local HMI under Main menu /Tests /
Function status /Current protection /InstPhaseOverCurrent(50,3I>>) /PHPIOC(50;3I>>):x , where x
= 1, 2, and 3.
The Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
148
Operation at different combinations of faults and operation mode
Fault type/Faulted phase current to the IED
A_BG/IA A_BG/IB
Trip Trip
Trip Trip
Trip No Trip
No Trip Trip
Trip No Trip
Trip No Trip
No Trip Trip
No Trip Trip
Trip No Trip
No Trip Trip
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B_CG/IB B_CG/IC C_CG/IA
Trip Trip Trip
Trip Trip Trip
Trip No Trip No Trip
No Trip Trip Trip
Trip No Trip Trip
No Trip Trip Trip
Trip No Trip Trip
Trip No Trip No Trip
No Trip Trip No Trip
No Trip Trip No Trip
"Preparing the IED to verify
1MRK506371-UUS Rev. M
Table
C_AG/IC
Trip
Trip
Trip
No Trip
No Trip
No Trip
No Trip
Trip
Trip
Trip
GUID-8BD66BC8-AAC3-41C4-B819-B159361688D2 v5
SEMOD53531-1 v1
settings".
Line distance protection REL670
Commissioning manual
M11754-3 v8