ABB Relion 670 Series Commissioning Manual page 122

Section 11
Testing functionality by secondary injection
7. Stop injection of all currents (that is, set all currents back to 0A).
8. Check that all above mentioned function binary output signals now have logical value
zero because they will be automatically blocked by operation of built-in reconnection
inhibit feature.
9. Repeat above steps 1-8 for phase L2 and phase L3.
Reactive power overload feature
1. Inject current equal to the set reactive power overload pickup level under setting
parameter
2. Check that function binary output signals STQOLL1 and STQOL are set to one.
3. Check that function binary output signals TRQOL and TRIP are set to one after the set
time under parameter
4. If any of these signals are used for tripping, signaling and/or local/remote indication
check that all relevant contacts and LEDs have operated and that all relevant GOOSE
messages have been sent.
5. Check that service value from the function for current in phase L1, on the local HMI under
Main menu/Test is approximately
6. Check that service value from the function for reactive power in phase L1, on the local
HMI under Main menu/Test is approximately 169% (that is, 1.3 · 1.3 = 1,69pu = 169%).
7. Stop injection of all currents (that is, set all currents back to 0A).
8. Check that all above mentioned function binary output signals now have logical value
zero.
9. Repeat above steps 1 - 8 for phase L2 and phase L3.
The following formula can be used to calculate SCB reactive power in per-unit system when
current with different frequency from the rated frequency is injected.
[ ]
Q pu
EQUATION2273 V1 EN-US
Harmonic voltage overload feature
Procedure to test inverse time delayed step:
116
Note that during testing the reactive power overload feature the harmonic
voltage overload feature or overcurrent feature may also give start and operate
signals depending on their actual settings. Therefore it is recommended to
switch them off during this test.
QOL> (that is, 1.3 · 0.587A = 0.763A at 50Hz for this SCB) in phase L1 only.
tQOL (for example, 60s for this SCB) has expired.
Note that operation of this feature is based on injected current and internally
calculated true RMS values. That means that this feature is also able to operate
for current signals with varying frequency. However due to relatively complex
calculation procedure it is recommended to do secondary tests only with
fundamental frequency current signals.
f
[ ]
= × 2
rated I pu
f
injected
Note that during testing the harmonic voltage overload feature the reactive
power overload feature or overcurrent feature may also give start and operate
signals depending on their actual settings. Therefore it is recommended to
switch them off during this test.
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382A (that is, 0.763A · (500/1) = 382A).
1MRK 511 403-UEN E
GUID-6DA88E90-366A-494F-B3A4-F8B5A3FD6396 v3
(Equation 13)
GUID-3C6B2C73-026D-4173-BD4D-1E7E9ADAE160 v3
Bay control REC670
Commissioning manual