Back-Up Trip; Setting; Man-Machine Interface (Mmi) - ABB REC 561 User Manual

ABB Network Partner AB
Version 1.0-00

2.5 Back-up trip

IL1
StartL1
IL2
StartL2
Start3ph
IL3
StartL3

3 Setting

3.1 Man-machine
interface (MMI)
Breaker-failure protection
The back-up trip delay timer t2 can be set between 50 and 400 ms.
A trip pulse length of 150 ms is generated.
L1
1
STARTL1
L2
1 STARTL2
L3
1 STARTL3
Fig. 7
The configuration of alternatives or settings to the functions is made on
the built-in MMI:
Settings
Functions
The breaker-failure protection can be controlled from the man-machine
interface (MMI) by an "Operation" parameter, to be set between alterna-
tives Off/On.
When "Operation" is set to Off, the function becomes inoperative.
The configuration of input and output signals to the function is made on
the built-in MMI:
Configuration
Function Inputs
RTL1
TTRIP
BUTL1
RTL2
TTRIP
BUTL2
RTL3
TTRIP
BUTL3
Breaker-failure protection
Group n
Breaker Failure
Breaker Failure
1MRK 580 171-XEN
Page 5 - 89
RETRIPL1
RETRIPL2
BACK-UP
1
TRIP
TTRIP
RETRIPL3
(X80171-7)