To verify the settings in the most common back-up trip mode
1 out of 3
it is sufficient
to test phase-to-ground-faults.
At mode
2 out of 4
the Phase current setting,
Pickup_PH
can be checked by single
phase injection where the return current is connected to the summed current input. The
value of residual (EF) current IN set lower than
Pickup_PH
is most easily checked in
backup trip mode
1 out of 4
.
6.4.10.1
Checking the phase current operate value, Pickup_PH
Check the current level
IP>
where setting
FunctionMode
=
Current
and setting
BuTripMode
=
1 out of 3
or
2 out of 4
as set under
Main menu/Settings/IED Settings/
Current/CSPRBRF(50BF)/1:CSPRBRF
.
1.
Apply the fault condition, including INITIATION of CSPRBRF (50BF), with a
current below set
Pickup_PH
.
2.
Repeat the fault condition and increase the current in steps until a trip occurs.
3.
Compare the result with the set
Pickup_PH
.
4.
Disconnect AC and INITIATE input signals.
If “No IPickup check” or “
Retrip off
” is set, only back-up trip can
be used to check set
Pickup_PH
.
6.4.10.2
Checking the residual (GF) current operate value
IN> set below IP>
Check the low set
IN>
current where setting
FunctionMode
=
Current
and setting
BuTripMode
=
1 out of 4
as set under
Main menu/Settings/IED Settings/Current/
CSPRBRF(50BF)1:CSPRBRF
.
1.
Apply the fault condition, including initiation of CSPRBRF 50BF, with a current
just below set
Pickup_N
.
2.
Repeat the fault condition and increase the current in steps until trip appears.
3.
Compare the result with the set
Pickup_N
.
4.
Disconnect AC and initiation input signals.
6.4.10.3
Checking the re-trip and back-up times
The check of the set times can be made in connection with the check of operate values
above. Choose the applicable function and trip mode, such as
FunctionMode
=
Current
and setting
RetripMode
=
No CBPos Check
as set under
Main menu/Settings/IED
Settings/CSPRBRF(50BF)/Current/1:CSPRBRF
.
1MRK 506 331-UUS A
Section 6
Testing functionality
81
Commissioning Manual
Содержание Relion 650 Series REL650
Страница 1: ...Relion 650 series Line distance protection REL650 ANSI Commissioning Manual ...
Страница 2: ......
Страница 8: ......
Страница 22: ...14 ...
Страница 44: ...36 ...
Страница 52: ...44 ...
Страница 156: ...148 ...
Страница 166: ...158 ...
Страница 175: ...167 ...