Hitachi Relion 670 Series Commissioning Manual page 185

1MRK506371-UUS Rev. M
•
•
•
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
UN
1) Inject lower voltage than 50V for high-ohmic EF test
3. The following signals shall be given from the APPTEF function:
•
•
•
Test of function operation for intermittent EF
1. Change the following settings from the default values:
•
•
•
•
•
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):
IN
UN
3. Within the reset time (that is 5s with above setting) re-apply the above quantities again for 100ms
and repeat this step for at least the same number of times as set under setting UN>StartsNo (at
least 4 times with above settings).
4. The following signals are given from the APPTEF function:
•
•
•
•
Line distance protection REL670
Commissioning manual
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
1)
STUN at the beginning of injection.
WRNFW, and STFW after approximately 650ms
TRIP after approximately 2.65s
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)
STUN at the beginning of every injection period of 100ms.
WRNFW at the beginning of every injection period of 100ms
STFW and STIEF appear after the fourth injection period of 100ms (when UN>StartsNo =4
as set above)
TRIP comes after 2s (set tTrip time) after the STFW signal has appeared
The dead time between two set injection pulses of 100ms is less than the set tReset time,
otherwise the function does not operate.
© 2017 - 2023 Hitachi Energy. All rights reserved
Testing functionality by secondary injection
Magnitude=75mA; Angle=180 degrees
Magnitude=45V; Angle=0 degrees
GUID-ADDA3A73-9884-41B1-96D0-EE9653004E96 v1
Magnitude=75mA; Angle=180 degrees
Magnitude=100V; Angle=0 degrees
Section 11
179