Verifying The Case Retripmode = Contact; Verifying The Function Mode Current&Contact - ABB Relion 650 Series Commissioning Manual

Section 7
Testing functionality
Checking the case
It is assumed that the earth-fault current setting
1. Set
2. Apply the fault condition, including start of CCRBRF, with one-phase current below set
IP> but above IN> . The residual earth fault should then be above set IN> .
3. Verify that back-up trip is achieved after set time. If selected, re-trip should also appear.
4. Disconnect AC and START input signals.
Checking the case
The earth-fault current setting
1. Set
2. Apply the fault condition, including start of CCRBRF, with one-phase current above set
IP> and residual (earth fault) above set IN> . It can be obtained by applying a single-phase
current.
3. Verify that back-up trip is achieved after set time. If selected, re-trip should also appear.
4. Apply the fault condition, including start of CCRBRF, with at least one-phase current
below set
feeding three- (or two-) phase currents with equal phase angle (I0-component) below
but of such value that the residual (earth fault) current (3I
5. Verify that back-up trip is not achieved.
6. Disconnect AC and START input signals.
7.4.4.6 Verifying the case
It is assumed that re-trip without current check is selected,
1. Set
2. Apply input signal for CB closed to input CBCLDL1 (2 or 3)CBCLD
3. Apply input signal, for start of CCRBRF. The value of current could be low.
4. Verify that phase-selection re-trip and back-up trip are achieved after set times.
5. Disconnect the start signal. Keep the CB closed signal.
6. Apply input signal, for start of CCRBRF. The value of current could be low.
7. Arrange disconnection of CB closed signal well before set back-up trip time
8. Verify that back-up trip is not achieved.
9. Disconnect injected AC and START input signals.
7.4.4.7 Verifying the function mode
To be made only when
Checking the case with fault current above set value
The operation shall be as in
1. Set
2. Leave the inputs for CB close inactivated. These signals should not influence.
3. Apply the fault condition, including start of CCRBRF, with current above the set
4. Check that the re-trip, if selected, and back-up trip commands are achieved.
5. Disconnect injected AC and START input signals.
Checking the case with fault current below set value
The case shall simulate a case where the fault current is very low and operation will depend on
CB position signal from CB auxiliary contact. It is suggested that re-trip without current check
is used, setting
44
BuTripMode = 1 out of 4
BuTripMode = 1 out of 4 .
BuTripMode = 2 out of 4
IN> may be equal to or below phase-current setting IP> .
BuTripMode = 2 out of 4 .
IP> and residual (earth fault) above set IN> . The current may be arranged by
RetripMode = Contact
FunctionMode = Contact
FunctionMode = Current&Contact is selected.
FunctionMode = Current .
FunctionMode = Current&Contact .
RetripMode = No CBPos Check .
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IN> is below phase current setting IP> .
RetripMode = Contact .
Current&Contact
IP>
I>BlkCont
1MRK 505 264-UEN A
) will be above set value
0
t2 .
IP> value.
Busbar protection REB650
Commissioning manual
M12104-165 v4
M12104-179 v4
IP> ,
IN> .
M12104-213 v5
M12104-237 v4
M12104-241 v4
M12104-281 v6