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Section 11
Testing functionality by secondary injection
7.1. Test the actual set values defined by AccSelCal to Aux Contact, ContTrCorr and
7.2. Inject phase current in the selected phase such that its value is greater than set
7.3. When the breaker goes to open position, accumulated energy IPOWPH is calculated. The
7.4. Alarm signal IPOWALPH appears when IPOWPH is greater than set AlmAccCurrPwr value.
7.5. Lockout signal IPOWLOPH appears if IPOWPH exceeds further to the threshold value
7.6. Calculation of accumulated energy IPOWPH is stopped when injected current is lower than
8.
Test of CB operation cycles
8.1. Test the actual set values defined by OperAlmLevel and OperLOLevel.
8.2. The operation counter, NOOPER is updated for every close-open sequence of the breaker
8.3. OPERALM is activated when NOOPER value exceeds the set OperAlmLevel value. The
8.4. OPERLO is activated when NOOPER value exceeds the set OperLOLevel value.
9.
Test of CB spring charge monitoring
9.1. Test the actual set value defined by SpChAlmTime.
9.2. Enable SPRCHRST input. Also activate SPRCHRD after a time greater than set time
9.3. At this condition, SPCHALM is activated.
10. Test of CB gas pressure indication
10.1. Test the actual set value defined bytDGasPresAlm and tDGasPresLO.
10.2. The output GPRESALM is activated after a time greater than set time of tDGasPresAlm
10.3. The output GPRESLO is activated after a set time of tDGasPresLO value if the input
11.14.3.2
Completing the test
1.
Continue to test another function or end the test by changing the Test mode setting to Off.
2.
Restore connections and settings to their original values if they were changed for testing
purposes.
11.14.4
Event function EVENT
Prepare the IED for verification of settings as outlined in section
During testing, the IED can be set when in test mode from PST. The functionality of the event
reporting during test mode is set in the Parameter Setting tool in PCM600.
•
Use event masks
•
Report no events
•
Report all events
In test mode, individual event blocks can be blocked from PCM600.
11.14.5
Limit counter L4UFCNT
The Limit counter function L4UFCNT can be tested by connecting a binary input to the counter and
applying pulses to the counter. The speed of the pulses must not exceed the cycle time of the
266
AlmAccCurrPwr.
AccStopCurr value.
calculated value can be seen on the output IPOWPH.
LOAccCurrPwr.
set AccStopCurr value.
by changing the position of auxiliary contacts POSCLOSE and POSOPEN.
actual value can be read on the output NOOPER.
SpChAlmTime.
value if the input PRESALM is enabled.
PRESLO is enabled.
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1MRK 504 165-UEN Rev. K
GUID-0A16206F-690E-46EF-86F4-5A89E0BF640B v3
"Preparing for test"
in this chapter.
GUID-7EBDC372-3407-4577-8B9A-6AB1758A1F34 v2
Transformer protection RET670
Commissioning manual
M11751-2 v5
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