Completing The Test; Overexcitation Protection Oexpvph; Verifying The Settings - ABB RELION 670 Series Commissioning Manual

1MRK 505 345-UEN B
6. Measure the time delay for the TR1 signal and compare it with the set value.
7. Check the inverse time delay by injecting a voltage corresponding to 1.2 × U1>.
t s
( )
IECEQUATION2429 V1 EN-US
where:
t(s)
k1
U
U1>
8. Repeat the test for Step 2 of the function.
10.6.3.2

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.
10.6.4

Overexcitation protection OEXPVPH

Prepare the IED for verification of settings outlined in section
"Requirements" and section "Preparing for test" in this chapter.
10.6.4.1

Verifying the settings

1. Enable function.
2. Connect a symmetrical three-phase voltage input from the test set to the appropriate
connection terminals of the overexcitation protection OEXPVPH is configured for a three-
phase voltage input.
A single-phase injection voltage is applied if the function is configured for a phase-to-
phase voltage input.
OEXPVPH is conveniently tested using rated frequency for the injection voltage and
increasing the injection voltage to get the desired overexcitation level.
3. Connect the alarm contact to the timer and set the time delay
4. Increase the voltage and note the operate value
5. Reduce the voltage slowly and note the reset value.
6. Set the alarm time delay to the correct value according to the setting plan and check the
time delay, injecting a voltage corresponding to 1.2 ·
7. Connect a trip output contact to the timer and temporarily set the time delay
0.5s.
8. Increase the voltage and note the
9. Reduce the voltage slowly and note the reset value.
10. Set the time delay to the correct value according to the setting plan and check the time
delay
11. Check that trip and alarm contacts operate according to the configuration logic.
Commissioning manual
For example, if the inverse time curve A is selected, the trip signals TR1
and TRIP operate after a time corresponding to the equation:
k 1
=
U
 
1
−
 
U 1
>
 
Operate time in seconds
Settable time multiplier of the function for step 1
Measured voltage
Set start voltage for step 1
tMin , injecting a voltage corresponding to 1.2 · V/Hz>> .
V/Hz> .
V/Hz> .
V/Hz>> operate value
Testing functionality by secondary injection
(Equation 99)
TestMode setting to Off .
tAlarm temporarily to zero.
tMin to
Section 10
SEMOD54358-38 v4
M6583-45 v5
M6583-49 v4
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