Hitachi RET670 Commissioning Manual page 11

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1MRK 504 165-UEN Rev. K
11.4.12.1
11.4.12.2
11.4.12.3
11.4.12.4
11.4.13
Automatic switch onto fault logic ZCVPSOF................................................................... 152
11.4.13.1
11.4.13.2
11.4.13.3
11.4.13.4
11.4.13.5
11.4.14
Phase preference logic PPLPHIZ ...................................................................................153
11.4.14.1
11.4.14.2
11.4.14.3
11.4.15
Phase preference logic PPL2PHIZ..................................................................................155
11.4.15.1
11.4.15.2
11.4.15.3
11.4.16
Under impedance protection for Generator ZGVPDIS.................................................... 156
11.4.16.1
11.4.16.2
11.5
Current protection..............................................................................................................159
11.5.1
11.5.1.1
11.5.1.2
11.5.2
Directional phase overcurrent protection, four steps OC4PTOC ................................... 159
11.5.2.1
11.5.2.2
11.5.2.3
11.5.3
Instantaneous residual overcurrent protection EFPIOC .................................................161
11.5.3.1
11.5.3.2
11.5.4
directionality) EF4PTOC .................................................................................................162
11.5.4.1
11.5.4.2
11.5.4.3
11.5.4.4
11.5.5
Four step negative sequence overcurrent protection NS4PTOC ................................... 163
11.5.5.1
11.5.5.2
11.5.6
11.5.6.1
11.5.6.2
11.5.7
Thermal overload protection, one time constant, Celsius/Fahrenheit LCPTTR/LFPTTR169
Transformer protection RET670
Commissioning manual
Verifying the settings.................................................................................................. 138
parameter ReachZ1................................................................................................... 145
Function revision history............................................................................................ 152
Activating ZCVPSOF externally ................................................................................ 153
Completing the test.................................................................................................... 153
Function revision history............................................................................................ 153
Verifying the signals and settings...............................................................................154
Completing the test.................................................................................................... 154
Function revision history............................................................................................ 155
Verifying the signals and settings...............................................................................155
Completing the test.................................................................................................... 156
Verifying the settings.................................................................................................. 156
Completing the test.................................................................................................... 158
Measuring the operate limit of set values...................................................................159
Completing the test.................................................................................................... 159
Function revision history............................................................................................ 160
Verifying the settings.................................................................................................. 160
Completing the test.................................................................................................... 161
Measuring the operate limit of set values...................................................................161
Completing the test.................................................................................................... 162
Function revision history............................................................................................ 162
Four step directional earth fault protection ................................................................162
Four step non-directional earth fault protection .........................................................163
Completing the test.................................................................................................... 163
Function revision history............................................................................................ 163
Completing the test.................................................................................................... 164
Measuring the operate and time limit for set values...................................................165
Completing the test.................................................................................................... 169
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