Checking The Phase Current Operate Value, Ip; Checking The Residual (Earth Fault) Current Operate Value In> Set Below Ip; Checking The Re-Trip And Back-Up Times; Verifying The Re-Trip Mode - ABB RELION REG670 Commissioning Manual

1MRK 502 067-UEN B
At mode
where the return current is connected to the summated current input. The value of residual
(earth fault) current IN set lower than
12.5.9.1 Checking the phase current operate value,
The check of the
out of 3 or 2 out of 4 .
1. Apply the fault condition, including START of CCRBRF, with a current below the set
2. Repeat the fault condition and increase the current in steps until a trip occurs.
3. Compare the result with the set
12.5.9.2 Checking the residual (earth fault) current operate value
IP>
Check the low set
1 out of 4
=
1. Apply the fault condition, including START of CCRBRF, 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 START input signals.
12.5.9.3

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 = CB Pos Check .
1. Apply the fault condition, including start of CCRBRF, well above the set current value.
Measure the time from START of CCRBRF.
2. Check the re-trip
In applicable cases, the back-up trip for multi-phase start
and
applied.
12.5.9.4

Verifying the re-trip mode

Choose the mode below, which corresponds to the actual case.
In the cases below it is assumed that
Checking the case without re-trip,
Commissioning manual
2 out of 4 the phase current setting, IP> can be checked by single-phase injection
IP> current level is best made in FunctionMode = Current and BuTripMode = 1
Note! If No CBPos Check or Retrip off is set, only back-up trip can be used to
IP> .
check set
IN> current where setting FunctionMode = Current and setting BuTripMode
t1 and back-up trip times t2 and t3 .
t3 can also be checked. To check t2MPh , a two-phase or three-phase start shall be
IP> is easiest checked in back-up trip mode 1 out of 4 .
IP>
IP> .
IN> .
FunctionMode = Current and
FunctionMode = Current is selected.
RetripMode = Retrip Off
Testing functionality by secondary injection
IN> set below
t2MPh and back-up trip 2, t2
Section 12
M12104-23 v12
IP> .
M12104-80 v9
IN> .
M12104-93 v10
M12104-36 v6
M12104-107 v6
165