Completing The Test; Two Step Overvoltage Protection Ov2Ptov; Verifying The Settings - ABB REG670 Commissioning Manual

1MRK 502 073-UEN A
13.6.1.2
13.6.2
13.6.2.1
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Commissioning manual
Testing functionality by secondary injection
value), then the TR1 and TRIP signals operate at a time equal to 0.250 s ±
tolerance.
10. The test above can be repeated to check the inverse time characteristic at
different voltage levels.
11. Repeat the above described steps for Step 2 of the function.
Extended testing
The tests above can be repeated for 2 out of 3 and for 3 out of 3 operation mode.

Completing the test

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

Two step overvoltage protection OV2PTOV

Prepare the IED for verification of settings outlined in Section
to verify settings".

Verifying the settings

Verification of single-phase voltage and time delay to operate for
Step 1
1. Apply single-phase voltage below the set value U1>.
2. Slowly increase the voltage until the ST1 signal appears.
3. Note the operate value and compare it with the set value U1>.
The operate value in secondary volts is calculated according
to the following equations:
For phase-to-earth measurement:
U 1 UBase VT sec
>
× ×
100 VTprim
3
IECEQUATION2426 V1 EN-US
For phase-to-phase measurement:
U VT
1 sec
>
UBase
× ×
100 VTprim
IECEQUATION2427 V1 EN-US
4. Decrease the voltage slowly and note the reset value.
5. Set and apply about 20% higher voltage than the measured operate value for
one phase.
6. Measure the time delay for the TR1 signal and compare it with the set value.
Section 13
M13796-35 v8
M13796-25 v5
M13806-2 v6
"Preparing the IED
M13806-9 v2
M13806-50 v9
(Equation 97)
(Equation 98)
205