The three settings here are Operation, Operator level and Slope.
9.3.2.10 Single phase busbar differential protection BZNSPDIF (Zone A)
Settings/Setting group N/Differential protection/BBPZoneA1Ph(PDIF,87B)/
BZNSPDIF_A:x
There are 17 settings in this view which cover several aspects of this function.
Operation, alarm settings and sensitivity levels are among the settings available here.
9.3.2.11 Single phase busbar differential protection BZNSPDIF (Zone B)
Main menu/Settings/Setting group N/Differential protection/
BBPZoneB1Ph(PDIF,87B)/BZNSPDIF_B:x
There are several settings in this view which cover several aspects of this function.
Operation, alarm settings and sensitivity levels are among the settings available here.
9.3.2.12 Single phase busbar differential protection BZISGGIO (Zone Interc.)
Main menu/Settings/Setting group N/Differential protection/
BBPZoneInterc1Ph(GGIO,87B)/BZISGGIO:x
This function has two settings in this view. Operation for turning the function on or
off and the threshold time for the alarm.
9.3.2.13 Status of primary switching object for busbar protection zone
selection SWSGGIO
Main menu/Settings/Setting group N/Differential protection/SwitchgearStatus/
SWSGGIO:xx-yy
In the this view the operation mode and alarm time can be set.
9.3.3 Current protection
9.3.3.1 Overview
Under Current protection there are settings for Phase overcurrent four stepThermal
overload with two time constants, and Breaker failure. There are several instances
of each function with parameter settings for rated data, operation and many others.
The thermal overload functions have temperature threshold settings as well as
many others necessary for adapting the function to a particular application.
9.3.3.2 Breaker failure protection CCRBRF
Main menu/Settings/Setting Group N/Current protection/
BreakerFailure(RBRF,50BF)/CCRBRF:x
1MRK505209-UEN E Section 9
Read and change settings
57
Operator's manual
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