Verifying The Function Mode Current&Contact - ABB rec670 Commissioning Manual
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- Applications manual (658 pages) ,
- Product manual (139 pages) ,
- Operator's manual (116 pages)
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1MRK 511 360-UEN A
10.4.9.8
Bay control REC670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
1.
Set FunctionMode = Contact
2.
Apply input signal for CB closed to relevant input or inputs CBCLDL1,
CBCLD2 or CBCDL3.
3.
Apply the input signal, or signals for the start of CCRBRF.
4.
Verify that phase selection re-trip and back-up trip are achieved after set times.
5.
Disconnect the start signal(s). Keep the CB closed signal(s).
6.
Apply input signal(s), for start of CCRBRF.
7.
8.
Arrange disconnection of CB closed signal(s) well before set back-up trip time
t2.
9.
Verify that back-up trip is not achieved.
Verifying the function mode
To be made only when FunctionMode = Current&Contact is selected. It is suggested
to make the tests in one phase only, or at three-phase trip applications for just three-
phase tripping.
Checking the case with fault current above set value
The operation shall be as in FunctionMode = Current.
1.
Set FunctionMode = Current&Contact.
2.
Leave the inputs for CB close inactivated. These signals should not influence.
3.
Apply the fault condition, including the start of CCRBRF, with the current above
the set IP> value.
4.
Check that the re-trip, if selected, and back-up trip commands are achieved.
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 RetripMode = No CBPos Check.
1.
Set FunctionMode = Current&Contact.
2.
Apply input signal for CB closed to the relevant input or inputs CBCLDL1 (2 or
3).
3.
Apply the fault condition with input signal(s) for start of CCRBRF. The value of
current should be below the set value I>BlkCont.
4.
Verify that phase selection re-trip (if selected) and back-up trip are achieved
after set times. Failure to trip is simulated by keeping the signal(s) CB closed
activated.
5.
Disconnect the input signal and the START signal(s). Keep the CB closed
signal(s).
Current&Contact
Section 10
IP>
I>BlkCont
103
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