ABB RELION REB670, Руководство по вводу в эксплуатацию

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Follow the following test instructions to test the operation of the differential
protection function for the current input CTx:
1. Connect the test set for injection of three-phase current (or if not available
one-phase current) to the current terminals of CTx input of REB670 terminal.
2. Check and write down the value for the configuration parameter CTprimx ,
which corresponds to the rated primary current of the CTx input.
Test the operation of the differential protection function ZA
3. Make sure that the check zone is properly set and enabled, when used.
4. Make sure the current from this current input is included into ZA
measurement.
Check the value for the configuration parameter
ZoneSel of the CTx, and
• energize the binary input CTRLZA , if the value of ZoneSel is
CtrlIncludes , or
• de-energize the binary input CTRLZA , if the value of ZoneSel is
CtrlExcludes , or
• go to the next step, if the value of ZoneSel is Fixed to ZA , Fixed to ZB
or Fixed to ZA & - ZB .
5. Check the association status of each CT to the differential zones, from the
local HMI (under
Main menu/Control/Station matrix ).
6. Increase the current in the phase L1 until the correct differential zone function
(that is, either ZA or ZB) operates and observe the incoming and differential
currents at the moment of operation.
7. Check that the trip and alarm contacts operate according to the scheme
wiring.
8. Check that the trip information is stored in the event list (if connected).
9. Switch off the current.
10. Check that the trip reset information is stored in the event list (if connected).
11. Check the function by injecting current in the phases L2 and L3 in the similar
way.
12. Inject a symmetrical three-phase current and observe the operate value
(possible with three-phase test set only).
13. Connect the timer and set the current to be five times of the value for the
parameter DiffOperLevel .
14. Switch on the current and observe the operate time.
Test the operation of the differential protection function ZB
15. Test the operation of both differential protection function ZA and ZB
simultaneously
Check the value for the configuration parameter
ZoneSel of the CTx, and
• de-energize the binary input CTRLZA and energize the binary input
CTRLZB , if the value of ZoneSel is CtrlIncludes ,
• energize the binary input CTRLZA and de-energize binary input
CTRLZB , if the value of ZoneSel is CtrlExcludes
• go directly to the next step, otherwise,
16. Repeat the steps from 5 to 14 for ZB
Test the operation of both differential protection function ZA and ZB
simultaneously
1MRK 505 372-UEN A
Section 10
Testing functionality by secondary injection
Busbar protection REB670 2.2 IEC 85
Commissioning manual