Verifying The Signals And Settings - ABB REG670 Commissioning Manual

Section 13
Testing functionality by secondary injection
13.12.6.1
260

Verifying the signals and settings

Time measurement and the injection of current and voltage can be done using
common test equipment.
Verifying HPTMPMAX and TOTCALC outputs
1. Connect the test set for injection of three-phase currents to the appropriate
current terminals of the IED.
2. Activate the TOTVALID input and set some temperature value in TOTEMP
input.
3. Supply the IED with three-phase currents slightly more than the rated value.
4. Make sure that the hot spot temperature (HPTMPMAX) is more than the set
value of TOTEMP.
5. Activate the AMBVALID input and set some temperature value in
AMBTEMP input.
6. Make sure that the top oil temperature calculated (TOTCALC) is more than
the set value of AMBTEMP.
Verifying WARNINGx and ALARMx outputs
1. Connect the test set for injection of three-phase currents to the appropriate
current terminals of the IED.
2. Make sure that the settings in the IED are appropriate, especially the warning
temperature levels (WrnHPTmpLevX) and alarm time settings
(tDelayToAlarmX).
3. Supply three-phase currents nearly zero to the IED and take note of hot spot
temperature (HPTMPMAX).
4. Make sure that the WARNINGx and ALARMx signals remains low.
5. Supply three-phase currents slightly more than the rated value to the IED and
take note of hot spot temperature (HPTMPMAX).
Observe the maximum permitted overloading of the current circuits in the
IED.
6. Check the time until the warning limit has reached WrnHPTmpLev1 level
during injection. Monitor the signal WARNING1 until it appears on the
corresponding binary output.
7. Compare the measured temperature (HPTMPMAX) with WrnHPTmpLev1
setting.
8. check the time until the warning limit has reached WrnHPTmpLev2 level
during injection. Monitor the signal WARNING2 until it appears on the
corresponding binary output.
9. Compare the measured temperature (HPTMPMAX) with WrnHPTmpLev2
setting.
10. Wait for a time corresponding to tDelayToAlarm1 from the appearance of
WARNING1 signal. Make sure that the ALARM1 signal appears.
11. Note the time taken for the appearance of ALARM1 signal from the
appearance of WARNING1 signal, and compare it with set value
(tDelayToAlarm1).
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
1MRK 502 073-UEN A
GUID-1B9A0E70-A40C-4C83-A314-26B4B33C2F97 v1
GUID-95D0A8EC-8901-4269-9FD3-7D7F386E6BB3 v1
GUID-85CA2ABF-13A9-4A4B-8E3F-AEF71D091E32 v1
Commissioning manual