ABB Relion 670 Series Commissioning Manual page 130

Section 11
Testing functionality by secondary injection
Injected quantities provided below are only for the neutral current IN and the neutral voltage UN. This
assumes that these two quantities are connected to the IED on separate inputs and connected to the
APPTEF function using two SMAI preprocessing function blocks. Each of these two signals is connected
as the fourth input on respective SMAI function block.
If the above is not the case, for example; the UN is not connected to the IED but instead internally
calculated by the IED from the three phase-to-ground voltages, then simply inject the following values for
the three voltages:
UL1=sqrt(3)*UN; UL2=0V; UL3=0V
where, UN is the secondary voltage value given for every test below.
If IN is not connected to the IED but instead internally calculated by the IED from the three phase
currents, then simply inject the following values for the three currents:
IL1=IN; IL2=0A; IL3=0A
where, IN is the secondary current value given for every test below.
Test of IMinForward setting pickup value
1. Change the following settings from the default values:
•
•
2. Inject the following analogue quantities given in secondary amperes and volts and wait for three
seconds to obtain the trip output (the default delay for tTrip=2s):
IN
UN
1) Inject set value for IMinForward +1.5% of CT secondary rated current, note that 1.5% is stated accuracy for the
3. The following signals shall be given from the APPTEF function:
•
•
•
•
4. Inject the following analogue quantities given in secondary amperes and volts and wait for three
seconds:
124
The default setting values are used in the following test procedures if not otherwise
stated for a particular test.
OperationMode = Start and Trip in order to obtain the trip signal
IN>=3% (minimum value) in order not to interfere with this pickup test
The default value for IMinForward =2.5% is used for this test.
1)
function.(That shall be ((2.5%+1.5%)/100)*1A=0.025A+0.015A when IMinForward =2.5% and CT rated secondary
is 1A).
STUN at the beginning of injection.
WRNFW as a 50ms pulse after approximately 35ms from the injection start.
STFW after approximately 150ms (default value for tStart=150ms)
TRIP after approximately 2.15s (after tStart+tTrip)
© 2017 - 2021 Hitachi Power Grids. All rights reserved
GUID-8F3DDF4D-DAF4-4873-9AA0-682A9D8E7D68 v1
Magnitude=40mA; Angle=180 degrees
Magnitude=75V; Angle=0 degrees
1MRK 511 403-UUS Rev. K
Bay control REC670
Commissioning manual