Testing the protection
GUID-6E4609B9-62AB-453D-8FCE-59F9F41AB59D v1
13.5.16.2 Completing the test
GUID-B4B2C5EF-DA21-4E89-874E-DD94D52D904B v2
Continue to test another function or end the test by changing the Test mode setting to
Disabled. Restore connections and settings to their original values, if they were
changed for testing purposes. Make sure that all built-in features for this function,
which shall be in operation, are enabled and with correct settings.
13.6 Voltage protection
SEMOD53540-1 v1
13.6.1 Two step undervoltage protection UV2PTUV (27)
M13796-2 v6
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to
verify settings".
13.6.1.1 Verifying the settings
M13796-9 v3
Verification of pickup value and time delay to trip for Step 1
M13796-29 v10
1. Check that the IED settings are appropriate, especially the PICKUP value, the
definite time delay and the 1 out of 3 operation mode.
2. Supply the IED with three-phase voltages at their rated values.
3. Slowly decrease the voltage in one of the phases, until the PICKUP signal
appears.
4. Note the trip value and compare it with the set value.
The trip value in secondary volts is calculated according to the
following equations:
For phase-to-ground measurement:
sec
100
3
Vpickup VBase VT
VTprim
<
´ ´
ANSIEQUATION2430 V1 EN-US (Equation 94)
For phase-to-phase measurement:
sec
100
Vpickup VT
VBase
VTprim
<
´ ´
ANSIEQUATION2431 V1 EN-US (Equation 95)
1MRK 502 073-UUS A Section 13
Testing functionality by secondary injection
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 219
Commissioning manual
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