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Section 10
Testing functionality by secondary injection
Z
IECEQUATION217 V2 EN-US
tan
IECEQUATION218 V1 EN-US
Then inject relevant voltage and current in such a way that above impedance value is measured by
the ZGTPDIS function.
1.
Change the magnitude and angle of the phase-to-phase voltage to achieve impedances at test
points P1, P2.....,P10.
2.
For each test points, check that the output signals START and STZx (where, x is 1- 3 depending
on the zone selected) are activated.
3.
Signals TRIP and TRZx will be activated after operate time delay tZx for the respective zone has
elapsed.
10.4.5.3
Completing the test
Continue to test another function or end the test by changing the TestMode setting to Off. Restore
connections and settings to their original values, if they were changed for testing purposes.
10.5
Current protection
10.5.1
Instantaneous phase overcurrent protection 2-phase output
PHPIOC
Prepare the IED for verification of settings outlined in Section
10.5.1.1
Measuring the operate limit of set values
1.
Inject a phase current into the IED with an initial value below that of the setting.
2.
Increase the injected current in the Ln phase until the TRLn (n=1,2) signal appears.
3.
Switch the fault current off.
4.
Compare the measured operating current with the set value IP>>.
10.5.1.2
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
10.5.2
Two-step directional phase overcurrent protection D2PTOC
Prepare the IED for verification of settings outlined in Section
Values of the logical signals for D2PTOC are available on the local HMI under Main menu/Tests/
Function status/Current protection/DirOverCurr2Step(51_67, 2(2I>))/D2PTOC(51_67;2(2I>)):x ,
where x = 1, 2,...8.
100
2
2
R
X
1
X /
R
Observe: Do not exceed the maximum permitted overloading of the current circuits
in the IED.
© 2017 - 2022 Hitachi Energy. All rights reserved
1MRK 506 377-UEN Rev. L
GUID-93110921-550A-441F-A36F-901488CC41BB v3
GUID-4A84DEE7-08D7-4301-95E1-CF317E38DC67 v2
"Preparing the IED to verify
"Preparing the IED to verify
Railway application RER670
Commissioning manual
(Equation 1)
(Equation 2)
SEMOD53531-1 v1
settings".
M11754-11 v7
M11754-24 v5
SEMOD56287-67 v9
settings".
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