CURVE INFORMATION AND TABLES
7-14
multiplier in the formula and the selected time dial is as
follows:
Multiplier =
Time Dial
20
The additional overcurrent curve shapes are selectable with
Modbus protocol communications. The following memory map
registers reflect this change.
Address
Dec Hex Chapter Page Line Unit Type of data
------------------------------------------------------------------------------------------
261 0105 SETPOINTS PHASE CURRENT PHASE O/C CURVE SHAPE Unsigned
261 * *** **** 0: MOD INV
261 * *** **** 1: NORMAL INV
261 * *** **** 2: VERY INV
261 * *** **** 3: EXTREM INV
261 * *** **** 4: CUSTOM
261 * *** **** 5: IEC A
261 * *** **** 6: IEC B
261 * *** **** 7: IEC C
303 012F SETPOINTS GROUND CURRENT GND O/C CURVE SHAPE Unsigned
303 * *** **** 0: MOD INV
303 * *** **** 1: NORMAL INV
303 * *** **** 2: VERY INV
303 * *** **** 3: EXTREM INV
303 * *** **** 4: CUSTOM
303 * *** **** 5: IEC A
303 * *** **** 6: IEC B
303 * *** **** 7: IEC C
On the following pages are the curve tables for the ANSI
curves Moderately Inverse, Normal Inverse, Very Inverse, and
Extremely Inverse.
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