Instantaneous Residual Overcurrent Protection Efpioc; Negativ Sequence Time Overcurrent Protection For Machines Ns2Ptoc; Four Step Directional Negative Phase Sequence Overcurrent Protection Ns4Ptoc; Four Step Phase Overcurrent Protection Oc4Ptoc - ABB RET670 Operator's Manual
Transformer protection
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Also See for RET670:
- Applications manual (1016 pages) ,
- Commissioning manual (328 pages) ,
- Installation and commissioning manual (240 pages)
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Section 9
Read and change settings
9.3.4.8
9.3.4.9
9.3.4.10
9.3.4.11
9.3.4.12
9.3.4.13
62
Instantaneous residual overcurrent protection EFPIOC
Main menu/Settings/Setting Group N/Current protection/
InstResidualOverCurrent(PIOC,50N)/EFPIOC:x
Displays some instances of EFPIOC with settable parameters per instance. The
settable parameters are operation (On or Off), base setting for current magnitude,
the threshold current as a percentage of IBase, and the multiplier for the current
threshold level.
Negativ sequence time overcurrent protection for machines NS2PTOC
Main menu/Settings/Setting group N/Current protection/
NegSeqOverCurr2Step(PTOC,46I2)/NS2PTOC:x
Displays instances of NS2PTOC.
Four step directional negative phase sequence overcurrent
protection NS4PTOC
Main menu/Settings/Setting group N/Current protection/
NegSecOverCurr4Step(PTOC,46I2)/NS4PTOC:x
Displays instances of NS4PTOC.
Four step phase overcurrent protection OC4PTOC
Main menu/Settings/Setting Group N/Current protection/
PhaseOverCurrent4Step(PTOC,51_67)/OC4PTOC:x
Displays some instances of OC4PTOC each with several settings. The settings
range from base current and voltage settings to parameters for customer
programmable curves.
Pole discordance protection CCRPLD
Main menu/Settings/Setting Group N/Current protection/
PoleDiscordance(RPLD,52PD)/CCRPLD:x
Displays instances of CCRPLD with some settings per instance. The settings are
for operation, base current, trip time delay, contact function selection, current
function selection, asymmetrical magnitude of current and current release threshold.
Four step residual overcurrent protection EF4PTOC
Main menu/Settings/Setting Group N/Current protection/
ResidualOverCurrent4Step(PTOC,51N_67N)/EF4PTOC:x
1MRK504114-UEN E
Operator's manual
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