Phase Current - GE M60 Instruction Manual

GROUPED ELEMENTS

5.7.6 Phase current

5
5.7.6.1 Menu
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  PHASE CURRENT
 PHASE CURRENT

5.7.6.2 Inverse TOC curve characteristics
The inverse time overcurrent curves used by the time overcurrent elements are the IEEE, IEC, GE Type IAC, and I
curve shapes. This allows for simplified coordination with downstream devices.
If none of these curve shapes is adequate, FlexCurves can be used to customize the inverse time curve characteristics. The
definite time curve is also an option that can be appropriate if only simple protection is required.
Table 5-25: Overcurrent curve types
IEEE
IEEE Extremely Inverse
5-234
Figure 5-130: Underpower logic
 PHASE TOC1



 PHASE TOC6


 PHASE IOC1



 PHASE IOC12


 PHASE

 DIRECTIONAL 1
 PHASE

 DIRECTIONAL 2
IEC
IEC Curve A (BS142)
See page 5-240
See page 5-242
See page 5-243
GE type IAC
IAC Extremely Inverse
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
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t standard
Other
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