Ampcontrol OCS - Page 51

Ampcontrol Pty Ltd – ABN 28 000 915 542
OCS USER MANUAL
MAG-182 Version 5 – FEB/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 51 of 72
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– PROPERTY OF AMPCONTROL PTY LTD
– NOT TO BE REPRODUCED IN PART
Current Related Functions
Over Current Protection
Curves
Very Inverse as per IEC 60255-151 B Curve, or Extremely Inverse as
per IEC 60255-151 C Curve
Current Range
See Protection Element Full Load Current Selection Table (Appendix A)
Time Multiplier
0.05-30 (See Protection Element TMS Table)
Motor Thermal Overload
Full Load Current
See Protection Element Full Load Current Selection Table (Appendix A)
Time Multiplier
0.05-30 (See Protection Element TMS Table)
Cooling Multiplier
1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0
Start Block Level
20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%
Short Circuit Protection
Trip Settings
1.5x to 12.5x in 0.25x increments in OC mode,
3.0x to 25x when in MOL mode with addition slower trip element at
1.5x to 12.5x (Multiples of Full Load Current)
Trip occurs at the level determined by selected Full Load Current x SC
Level or 6 kA, whichever is lesser.
Trip Time
40ms, 60ms, 80ms, 100ms, 120ms, 140ms,160ms, 180ms, 200ms (All
times are +/- 15ms)
Current Monitoring
Under Current
0% (Disabled), 30%,35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%,
80%, 85%, 90%, 95%
Current Balance
5%, 10%, 20%, 50%, OFF
Other Protection Functions
Under Voltage Protection
Trip Settings
Off, 40%, 50%, 60%, 70%, 75%, 80%, 85%, 90%, 95%
Trip Time
850ms