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
.
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
.
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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