Completing The Test; Voltage-Restrained Time Overcurrent Protection Vrpvoc(51V); Function Revision History; Verifying The Settings - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
11.4.16.2

Completing the test

Continue to test another functions 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.
11.4.17

Voltage-restrained time overcurrent protection VRPVOC(51V)

Prepare the IED for verification of settings as outlined in section
for test" in this chapter.
11.4.17.1

Function revision history

Document
revision
A
B
C
D
E
F
G
H
J
K
11.4.17.2

Verifying the settings

Verifying settings by secondary injection
1. Connect the test set for three-phase current injection and three-phase voltage injection to the
appropriate IED terminals.
2. Go to Main menu /Settings /IED Settings /Current protection /VoltageRestOverCurr ( 51V,2(I>/
V<))/VRPVOC (51V,2(I>/V<)):1 /General and make sure that the function is enabled, that is,
Operation is set to Enabled.
3. The test of the function may be performed by injecting restrain voltage and increasing the injected
current(s). Note the value at which the PICKUP and STOC signals are set.
The set trip value in secondary amperes is calculated according to the following equations:
First part of the characteristic (Restrain voltage ≤ 25% of VBase):
120
Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.4 -
2.2.4 -
2.2.5 Previously called settings Characterist and t_DefOC had their names changed to
Characteristic and t_OC for more clear understanding.
In the following equations, restrain voltage is the magnitude of the minimum phase-
to-phase voltage in secondary volts.
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Commissioning manual
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