ABB RED650 Technical Manual page 743

1MRK 505 394-UEN A
Line differential protection RED650 2.2 IEC
Technical manual
action. FAN is equal to disturbance number, which is incremented for each
disturbance.
ASDU26 / ASDU31
When a disturbance has been selected by the master by sending ASDU24, the
protection equipment answers by sending ASDU26, which contains an information
element named NOF (number of grid faults). This number must indicate fault
number in the power system,that is, a fault in the power system with several trip
and auto-reclosing has the same NOF (while the FAN must be incremented). NOF
is just as FAN, equal to disturbance number.
Interoperability, physical layer
Electrical Interface
EIA RS-485
number of loads
Optical interface
glass fibre
plastic fibre
Transmission speed
9600 bit/s
19200 bit/s
Link Layer
DFC-bit used
Connectors
connector F-SMA
connector BFOC/2.5
Interoperability, application layer
Selection of standard ASDUs in monitoring direction
ASDU
1 Time-tagged message
2 Time-tagged message with rel. time
3 Measurands I
4 Time-tagged message with rel. time
5 Identification
6 Time synchronization
8 End of general interrogation
9 Measurands II
Table continues on next page
Station communication
Supported
Yes
32
Yes
Yes
Yes
Yes
No
Yes
Supported
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Section 18
M11874-482 v3
M11874-524 v3
737