Event Function Event; Limit Counter L4Ufcnt; Completing The Test; Estimation Of Transformer Insulation Life Lolsptr - Hitachi Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
11.13.4

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.
11.13.5

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
function. Normally the counter will be tested when testing the function that the counter is connected
to, such as the trip function. When the function is configured, test it together with the function that
operates it. Trigger the function and check that the counter result corresponds to the number of
operations.
11.13.5.1

Completing the test

Continue to test another function or end the test by changing the Test mode setting to Off. Restore
connections and settings to their original values, if they were changed for testing purposes.
11.13.6

Estimation of transformer insulation life LOLSPTR

Prepare the IED for verification of settings outlined in Section
11.13.6.1

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).
194
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1MRK 511 403-UEN Rev. L
"Preparing for test" in this chapter.
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GUID-C08B2360-2134-43DD-9F39-54CD9FA45B5B v1
"Preparing the IED to verify
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Bay control REC670
Commissioning manual
M11751-2 v5
settings".