Menu Text Col Row Default Setting Available Options
Description
This setting determines the elements that will reset the CB fail timer for CB Failures, which were initiated by the voltage protection function.
Ext Prot Reset 45 07 CB Open & I<
0=I< Only
1=CB Open & I<
2=Prot Reset & I<
This setting determines the elements that will reset the CB fail timer for CB Failures initiated by external protection functions.
UNDER CURRENT 45 08
The settings under this sub-heading relate to Undercurrent settings
I< Current Set 45 09 0.1 From 0.02*I1 to 3.2*I1 step 0.01*I1
This setting determines the current threshold, which will reset the CB Fail timer for Overcurrent-based protection
IN< Current Set 45 0A 0.1 From 0.02*I2 to 3.2*I2 step 0.01*I2
This setting determines the current threshold, which will reset the CB Fail timer for Earth Fault-based protection
ISEF< Current 45 0B 0.02 From 0.001*I3 to 0.8*I3 step 0.0005*I3
This setting determines the current threshold, which will reset the CB Fail timer for SEF-based protection
BLOCKED O/C 45 0C
The settings under this sub-heading relate to Blocked Overcurrent settings
Remove I> Start 45 0D Disabled 0 = Disabled or 1 = Enabled
This setting enables or disables the Remove I>Start signal
Remove IN> Start 45 0E Disabled 0 = Disabled or 1 = Enabled
This setting enables or disables the Remove IN>Start signal
4.4 CB FAIL DDB SIGNALS
Ordinal English Text Source Type Response Function
Description
150 CB Fail Alarm Software PSL Input Alarm latched event
This DDB signal is an alarm indicating CB Failure
227 Ext. Trip 3ph Programmable Scheme Logic PSL Output No response
This DDB signal receives an external three-phase trip signal
353 Bfail1 Trip 3ph Software PSL Input Protection event
This DDB signal is the three-phase trip signal for the stage 1 CB Fail function
354 Bfail2 Trip 3ph Software PSL Input Protection event
This DDB signal is the three-phase trip signal for the stage 2 CB Fail function
373 IA< Start Software PSL Input No response
This DDB signal is the A-phase Phase Undercurrent start signal
374 IB< Start Software PSL Input No response
This DDB signal is the B-phase Phase Undercurrent start signal
375 IC< Start Software PSL Input No response
This DDB signal is the C-phase Phase Undercurrent start signal
376 IN< Start Software PSL Input No response
This DDB signal is the Earth Fault undercurrent start signal
377 ISEF< Start Software PSL Input No response
This DDB signal is the Sensitive Earth Fault undercurrent start signal
380 All Poles Dead Software PSL Input No response
Chapter 5 - Protection Functions MiCOM P747
114 P747-TM-EN-1
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