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

Section 12
Testing functionality by secondary injection
k1
U
U1<
For example, if the measured voltage jumps from the rated value to 0.8 times the set
start voltage level and time multiplier k1 is set to 0.05 s (default 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
12.6.1.2

Completing the test

Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
12.6.2

Two step overvoltage protection OV2PTOV

Prepare the IED for verification of settings as outlined in section
section
12.6.2.1

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
2. Slowly increase the voltage until the ST1 signal appears.
3. Note the operate value and compare it with the set value
For phase-to-earth measurement:
U
100
IECEQUATION2426 V1 EN-US
For phase-to-phase measurement:
U
100
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.
184
Settable time multiplier of the function for step 1
Measured voltage
Set start voltage for step 1
"Preparing for test" in this chapter.
The operate value in secondary volts is calculated according to the
following equations:
1 UBase VT sec
>
× ×
VTprim
3
VT
1 sec
>
UBase
× ×
VTprim
2 out of 3 and for 3 out of 3 operation mode.
U1> .
1MRK 502 067-UEN B
TestMode setting to Off .
"Requirements" and
U1> .
(Equation 97)
(Equation 98)
Commissioning manual
M13796-35 v8
M13796-25 v5
M13806-2 v6
M13806-9 v2
M13806-50 v8