CHAPTER 5: SETTINGS
5.7.4 Stator differential (ANSI 87S)
SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) STATOR DIFFERENTIAL
STATOR
DIFFERENTIAL
The stator differential protection element is intended for use on the stator windings of rotating machinery.
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 5-122: Speed 2 undercurrent logic
STATOR DIFF
FUNCTION: Disabled
STATOR DIFF LINE
END SOURCE: SRC 1
STATOR DIFF NEUTRAL
END SOURCE: SRC 1
STATOR DIFF
PICKUP: 0.100 pu
STATOR DIFF
SLOPE 1: 10 %
STATOR DIFF
BREAK 1: 1.15 pu
STATOR DIFF
SLOPE 2: 80 %
STATOR DIFF
BREAK 2: 8.00 pu
STATOR DIFF
BLK: Off
STATOR DIFF
TARGET: Self-reset
STATOR DIFF
EVENTS: Disabled
GROUPED ELEMENTS
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.050 to 1.000 pu in steps of 0.001
Range: 1 to 100% in steps of 1
Range: 1.00 to 1.50 pu in steps of 0.01
Range: 1 to 100% in steps of 1
Range: 1.50 to 30.00 pu in steps of 0.01
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
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