Protective Elements
The following table shows the application options of the Overcurrent Protection element
Applications of the I-Protection Module Setting in Option
ANSI 50 – Overcurrent protection, non-
directional
Device Planning menu Measuring Mode:
Fundamental/TrueRMS/negative
phase sequence current (I2)
ANSI 51 – Short circuit protection, non-
directional
Device Planning menu Measuring Mode:
Fundamental/TrueRMS/negative
phase sequence current (I2)
ANSI 67 – Overcurrent/ Short circuit
protection, directional
Device Planning menu Measuring Mode:
Fundamental/TrueRMS/negative
phase sequence current (I2)
ANSI 51V – Voltage restraint overcurrent
protection
Parameter Set:
VRestraint = active
Measuring Mode:
Fundamental/TrueRMS/negative
phase sequence current (I2)
Measuring Channel:
Phase to Phase/Phase to Neutral
ANSI 51Q Negative Phase Sequence
Overcurrent Protection
Parameter Set:
Measuring Method =I2
(Negative Sequence
Current)
51C Voltage controlled overcurrent
protection
(Please refer to the chapter
Parameter/Adaptive Parameter)
Adaptive Parameters Measuring Mode:
Fundamental/TrueRMS/negative
phase sequence current (I2)
Measuring Channel:
(in voltage protection module)
Phase to Phase/Phase to Neutral
678 MCDGV4 DOK-HB-MCDGV4-2E
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