ABB REL 551-C1*2.5 Technical Reference Manual page 137

Protect line differential protection terminal
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128
Serial communication
245
General interrogation on generic data
248
Write entry
249
Write entry with confirmation
250
Write entry with execution
251
Write entry abort
Table 135: Measurands
Measurand
Current L1
Current L2
Current L3
Voltage L1-E
Voltage L2-E
Voltage L3-E
Voltage L1 -L2
Active power P
Reactive power Q
Table 136: Interoperability, physical layer
Electrical Interface
EIA RS485
number of loads
Optical Interface
glass fibre
plastic
Transmission Speed
9600 bit/s
19200 bit/s
Link Layer
DFC-bit used
Connectors
connector F-SMA
connector BFOC2, 5
Data communication
No
No
No
No
No
Rated value
1.2
Supported
NoYes
No4
Yes
Yes
Yes
Yes
Yes
No
Yes
Chapter 9
2.4
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

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