7.1. Test the actual set values defined by AccSelCal to Aux Contact,
ContTrCorr and AlmAccCurrPwr.
7.2. Inject phase current in the selected phase such that its value is greater than
set AccStopCurr value.
7.3. When the breaker goes to open position, accumulated energy IPOWPH is
calculated. The calculated value can be seen on the output IPOWPH.
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 LOAccCurrPwr.
7.6. Calculation of accumulated energy IPOWPH is stopped when injected
current is lower than set AccStopCurr value.
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 by changing the position of auxiliary contacts POSCLOSE
and POSOPEN.
8.3. OPERALM is activated when NOOPER value exceeds the set
OperAlmLevel value. The actual value can be read on the output NOOPER.
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 SpChAlmTime.
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 value if the input PRESALM is enabled.
10.3. The output GPRESLO is activated after a set time of tDGasPresLO value if
the input PRESLO is enabled.
12.12.3.2 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.
Section 12 1MRK502053-UEN B
Testing functionality by secondary injection
230 Generator protection REG670 2.0 IEC
Commissioning manual
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