The TRIP signal is not issued for EF in the reverse direction.
4.
Inject the following analogue quantities given in secondary amperes and volts and wait for
three seconds:
IN
1)
Magnitude=10mA; Angle=0 degrees
UN
Magnitude=75V; Angle=0 degrees
1) Inject set value for
IMinReverse
–1.5% of CT secondary rated current, ( 0.025A-0.015A when
IMinReverse
=2.5% and CT rated secondary is 1A)).
5.
The following signal is given from the APPTEF function:
•
Only STUN at the beginning of injection.
The function did not operate for this reverse EF now because the injected current is
below the set level.
Test of function operation for high-ohmic EF
GUID-99777636-56B6-4B0D-A796-6163B5DE94A2 v1
1.
Change the following settings from the default values:
•
OperationMode
= Start and Trip in order to obtain the trip signal
•
IN
>=5% (default value)
•
IMinForward
=50% in order for standard logic not to operate for this test
2.
Inject the following analogue quantities given in secondary amperes and volts and wait for
three seconds in order to obtain the trip output (default delay for tTrip=2s):
IN
Magnitude=75mA; Angle=180 degrees
UN
1)
Magnitude=45V; Angle=0 degrees
1) Inject lower voltage than 50V for high-ohmic EF test
3.
The following signals shall be given from the APPTEF function:
•
STUN at the beginning of injection.
•
WRNFW, and STFW after approximately 650ms
•
TRIP after approximately 2.65s
Test of function operation for intermittent EF
GUID-ADDA3A73-9884-41B1-96D0-EE9653004E96 v1
1.
Change the following settings from the default values:
•
OperationMode
= Start and Trip in order to obtain the trip signal
•
IN
>=5% (default value)
•
IMinForward
=2.5% (use the default value)
•
UN>StartsNo
=4 (default, but it can be changed if required)
•
tReset
=5.0s (set maximum value in order to make the test process easier)
2.
Inject manually the following analogue quantities given in secondary amperes and volts but
only for 100ms (in order to avoid STFW signal which is delayed for 150ms):
1MRK 511 403-UEN Rev. L
Section 11
Testing functionality by secondary injection
Bay control REC670
119
Commissioning manual
© 2017 - 2022 Hitachi Energy. All rights reserved
Summary of Contents for REC670
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