Measurement mode, impedance settings and other pole slip protection parameters are
found here.
9.3.3.16
Power swing detection ZMRPSB (78)
Main menu/Settings/Setting Group N/Impedance protection/
PowerSwingDetection(RPSB,78))/PSD
Includes settings for operation, reactive and resistive boundaries, various timers, base
settings for current levels and several others.
9.3.3.17
Power swing logic ZMRPSL
Main menu/Settings/Setting Group N/Impedance protection/
PowerSwingLogic(RPSL)/PSL1
Timers are set here.
9.3.4
Current protection
9.3.4.1
Overview
Under Current protection there are settings for Instantaneous phase overcurrent, Phase
overcurrent four step, Instantaneous residual overcurrent, Residual overcurrent four
step, Thermal overload with one time constant, Stub protection, Pole discrepancy 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.
9.3.4.2
Breaker failure protection CCRBRF (50BF)
Main menu/Settings/Setting Group N/Current protection/BreakerFailure(RBRF,
50BF)/BFP
Displays some instances of CCRBRF (50BF) with several settings per instance.
Settings include operation, base current, function mode, operation mode of retrip logic,
time delays and several others.
9.3.4.3
Broken conductor check BRCPTOC (46)
Main menu/Settings/Setting Group N/Current protection/
BrokenCondCheck(PTOC,46)/BRC
Section 9
1MRK506276-UUS B
Read and change settings
56
Operator's manual
