Completing The Test; Voltage Protection; Two Step Undervoltage Protection Uv2Ptuv; Verifying The Settings - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
IN
UN
3. Within the reset time (that is 5s with above setting) re-apply the above quantities again
for 100ms and repeat this step for at least the same number of times as set under
setting
4. The following signals are given from the APPTEF function:
•
•
•
•
11.5.15.2

Completing the test

Continue to test another function or end the test by navigating to Main menu/Test/IED test
mode/TESTMODE: 1 and change the IEDTestMode setting to Off. Restore connections and
settings to their original values, if they were changed for testing purposes.
11.6

Voltage protection

11.6.1

Two step undervoltage protection UV2PTUV

Prepare the IED for verification of settings as outlined in section
section
11.6.1.1

Verifying the settings

Verification of start value and time delay to operate for Step 1
1. Check that the IED settings are appropriate, especially the START value, the definite time
delay and the
2. Supply the IED with three-phase voltages at their rated values.
3. Slowly decrease the voltage in one of the phases, until the START signal appears.
4. Note the operate value and compare it with the set value.
For phase-to-earth measurement:
U
100
IECEQUATION2430 V1 EN-US
184
UN>StartsNo (at least 4 times with above settings).
STUN at the beginning of every injection period of 100ms.
WRNFW at the beginning of every injection period of 100ms
STFW and STIEF appear after the fourth injection period of 100ms (when
UN>StartsNo =4 as set above)
TRIP comes after 2s (set
The dead time between two set injection pulses of 100ms is less than the
tReset time, otherwise the function does not operate.
set
"Preparing for test" in this chapter.
1 out of 3 operation mode.
The operate value in secondary volts is calculated according to the
following equations:
UBase VT
1 sec
<
× ×
VTprim
3
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Magnitude=75mA; Angle=180 degrees
Magnitude=100V; Angle=0 degrees
tTrip time) after the STFW signal has appeared
1MRK 505 378-UEN Rev. H
GUID-FEA7B2D1-3F4A-43FD-98F8-EC3584E5B511 v1
SEMOD53540-1 v1
"Requirements" and
(Equation 97)
Line differential protection RED670
Commissioning manual
M13796-2 v6
M13796-9 v3
M13796-29 v10