ABB REG670 - Completing the Test; Negative-Sequence Time Overcurrent Protection for Machines NS2 PTOC (46 I2); Verifying Settings by Secondary Injection

reverse power protection). Check that the monitored active power is equal to
100% of rated power and that the reactive power is equal to 0% of rated power.
3. Change the angle between the injected current and voltage to Angle1 + 90°.
Check that the monitored active power is equal to 0% of rated power and that the
reactive power is equal to 100% of rated power.
4. Change the angle between the injected current and voltage back to Angle1 value.
Increase the current slowly from 0 until the PICKUP1 signal, pickup of stage 1, is
activated. Check the injected power and compare it to the set value Power1,
power setting for stage 1 in % of Sbase.
5. Increase the current to 100% of IBase and switch the current off.
6. Switch the current on and measure the time for activation of TRIP1, trip of stage
1.
7. If a second stage is used, repeat steps
2 to 6 for the second stage.
13.5.11.2 Completing the test
SEMOD175058-66 v4
Continue to test another function or end the test by changing the TESTMODE setting to
Disabled. Restore connections and settings to their original values, if they were
changed for testing purposes.
13.5.12 Negative-sequence time overcurrent protection for machines
NS2PTOC (46I2)
GUID-48A6DA1D-5CF5-4C1B-B1A4-3F2C73851FD4 v2
GUID-F7AA2194-4D1C-4475-8853-C7D064912614 v4
When inverse time overcurrent characteristic is selected, the trip time
of the stage will be the sum of the inverse time delay and the set
definite time delay. Thus, if only the inverse time delay is required, it is
important to set the definite time delay for that stage to zero.
13.5.12.1 Verifying settings by secondary injection
GUID-EB788169-532A-4A3E-BBEC-DCB28169DF86 v6
1. Connect the test set for injection of three-phase currents to the appropriate current
terminals of the IED.
2. Go to Main menu/Settings/Setting group n/Current protection/
NegSeqOverCurr2Step/NSOn/General and make sure that the function is
enabled, that is Operation is set to Enabled.
3. Inject current into IEDs in such a way that negative sequence component is
created and then verify that negative sequence component of the injected currents
is calculated correctly by the function. See example below for 1 A rated current
transformer.
Section 13 1MRK 502 073-UUS A
Testing functionality by secondary injection
210 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual