•
Create a L2L3 fault such that their phase voltage magnitudes are lower than
UPhSel<
times corresponding quadrature phase to phase voltage and set
Tau
to default value.
•
Check that
TRIP
,
TRL1
,
TRL2
and
TRL3
are generated after the set delay
time of
t3Ph
and
ARST
,
ARST3PH
,
ARSTL1
,
ARSTL2
and
ARSTL3
are also
activated.
•
Check that activated trip signals and start signals are blocked by enabling
BLKTR
and
BLKST
.
•
Check that all activated signals are disabled by
BLOCK
input.
11.6.7.2
Completing the test
GUID-4AFACF9B-9CA8-4960-9806-316FFCFEDEC0 v1
Continue to test another function or end the testing by setting the parameter
TestMode
to
Off
under:
Main menu/Tests/IED test mode/TESTMODE:1
Restore connections and settings to their original values if they were changed for
testing purposes.
11.7
Frequency protection
SEMOD53547-1 v1
11.7.1
Underfrequency protection SAPTUF
M16289-2 v7
Prepare the IED for verification of settings outlined in Section
11.7.1.1
Verifying the settings
M16289-15 v3
Verification of START value and time delay to operate
M16289-17 v7
1.
Check that the IED settings are appropriate, for example the start value and
the time delay.
2.
Supply the IED with three-phase voltages at their rated values and initial
frequency.
The initial frequency is calculated using Equation
.
0.02
/ 0.04
0.04
r
StartFrequency
floor f
StartFrequency
IECEQUATION16059 V1 EN-US
(Equation 103)
3.
Slowly decrease the voltage frequency by steps of 40 mHz until the START
signal appears; during each step apply the voltage signal for a time that is
either at least 10% longer than (
tDelay
+100ms) or a suitable time to monitor
the function.
4.
Note the frequency value at which the START signal appears and compare it
with the set value
StartFrequency
.
5.
Increase the frequency until its rated value is reached.
Section 11
1MRK 505 378-UEN A
Testing functionality by secondary injection
208
Line differential protection RED670 2.2 IEC
Commissioning manual
Summary of Contents for RED670 Relion 670 series
Page 1: ...RELION 670 SERIES Line differential protection RED670 Version 2 2 IEC Commissioning manual ...
Page 2: ......
Page 18: ...12 ...
Page 36: ...30 ...
Page 68: ...62 ...
Page 72: ...66 ...
Page 108: ...102 ...
Page 278: ...272 ...
Page 282: ...276 ...
Page 288: ...282 ...
Page 306: ...300 ...
Page 307: ...301 ...