10.5 Current protection
SEMOD53531-1 v1
10.5.1 Instantaneous phase overcurrent protection 2-phase output
PHPIOC
GUID-4A84DEE7-08D7-4301-95E1-CF317E38DC67 v2
Prepare the IED for verification of settings outlined in Section "Preparing the IED
to verify settings".
10.5.1.1 Measuring the operate limit of set values
M11754-11 v7
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.
Observe: Do not exceed the maximum permitted overloading
of the current circuits in the IED.
4. Compare the measured operating current with the set value IP>>.
10.5.1.2 Completing the test
M11754-24 v5
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.
10.5.2 Two-step directional phase overcurrent protection D2PTOC
SEMOD56287-67 v9
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
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.
The Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
1MRK 506 377-UEN C Section 10
Testing functionality by secondary injection
Railway application RER670 2.2 IEC 105
Commissioning manual
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