ABB REG670 - Limit Counter L4 UFCNT; Completing the Test; Estimation of Transformer Insulation Life LOLSPTR (26;49 HS); Verifying the Signals and Settings

13.12.5 Limit counter L4UFCNT
GUID-7EBDC372-3407-4577-8B9A-6AB1758A1F34 v2
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.
13.12.5.1 Completing the test
GUID-325F040B-BADC-4281-B965-9B7D6BFA3E15 v1
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.
13.12.6 Estimation of transformer insulation life LOLSPTR (26/49HS)
GUID-C08B2360-2134-43DD-9F39-54CD9FA45B5B v1
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to
verify settings".
13.12.6.1 Verifying the signals and settings
GUID-1B9A0E70-A40C-4C83-A314-26B4B33C2F97 v1
Time measurement and the injection of current and voltage can be done using common
test equipment.
Verifying HPTMPMAX and TOTCALC outputs
GUID-95D0A8EC-8901-4269-9FD3-7D7F386E6BB3 v1
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.
Section 13 1MRK 502 073-UUS A
Testing functionality by secondary injection
278 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual