Checking The Residual (Ground Fault) Current Operate Value Pickup_N Set Below; Pickup_Ph; Checking The Re-Trip And Back-Up Times; Verifying The Re-Trip Mode - ABB Relion 650 Series Commissioning Manual

1MRK 505 289-UUS B
7.4.4.2 Checking the residual (ground fault) current operate value
below
Check the low set
BuTripMode = 1 out of 4 as set under Main menu/Settings/IED Settings/Current/CCRBRF(50BF)/
CCRBRF:1.
1. Apply the fault condition, including INITIATION of CCRBRF (50BF), with a current just below
set
2. Repeat the fault condition and increase the current in steps until trip appears.
3. Compare the result with the set
4. Disconnect AC and INITIATION input signals.
7.4.4.3

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
RetripMode = No CBPos. Check as set under Main menu/Settings/IED Settings/Current/
CCRBRF(50BF)/CCRBRF:1.
1. Apply the fault condition, including initiation of CCRBRF (50BF), well above the set current
value. Measure time from INITIATION of CCRBRF (50BF).
2. Check the re-trip
3. Disconnect AC and INITIATE input signals.
7.4.4.4

Verifying the re-trip mode

Choose the mode below, which corresponds to the actual case.
In the cases below it is assumed that
Settings/IED Settings/Current/CCRBRF(50BF)/CCRBRF:1.
Checking the case without re-trip,
1. Set
2. Apply the fault condition, including initiation of CCRBRF (50BF), well above the set current
value.
3. Verify that no re-trip, but back-up trip is achieved after set time.
4. Disconnect AC and INITIATE input signals.
Checking the re-trip with current check,
1. Set
2. Apply the fault condition, including initiation of CCRBRF (50BF), well above the set current
value.
3. Verify that re-trip is achieved after set time
4. Apply the fault condition, including initiation of CCRBRF (50BF), with current below set
current value.
5. Verify that no re-trip, and no back-up trip is obtained.
6. Disconnect AC and INITIATE input signals.
Busbar protection REB650
Commissioning manual

Pickup_PH

Pickup_N current where setting FunctionMode = Current and setting
IN>Pickup_N .
t1 and back-up trip times t2 .
RetripMode = Retrip Off .
RetripMode = CB Pos Check .
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Pickup_N .
FunctionMode = Current and setting
FunctionMode = Current as set under Main menu/
RetripMode = Retrip Off
RetripMode = CB Pos Check
t1 and back-up trip after time t2
Section 7
Testing functionality
Pickup_N set
M12104-80 v7
M12104-93 v6
M12104-36 v6
M12104-107 v4
M12104-48 v4
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