GE Industrial Solutions EntelliGuard TU Trip Units - Manual (Page 100)

EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Appendix D: GTU Coordination Curve Settings Comparison
90 ©2012 General Electric All Rights Reserved
APPENDIX D: GTU COORDINATION CURVE SETTINGS COMPARISON
NOTICE
These settings approximate settings on previous generation trip units. It is recommended to evaluate each breaker on a
case by case basis to determine if alternate settings provide improved coordination and protection versus the
approximate settings listed below.
ST Band Comparisons have been developed not to exceed max clearing time of other trip units to maintain or lower arc
flash hazard values.
Table D-1: ST Band Comparisons
Trip Unit Function Setting GTU Curves within Band
GTU Curve Best
Approximating Max
Clearing Time
Supporting TCC
MVT / MVT PM
/ MVT+ LT Pickup -
MVT 0.5-1.1 in 0.05
increments LT Pickup Values may be set
according to old setting
& Power+ LT Pickup -
Power+ 0.5, .6, .7, .8, .9,
.95, 1, 1.1 LT Pickup Values may be set
according to old setting
(LSIG) LT Delay 1 C4, C5 C5 MVT LT 1.pdf
LT Delay 2 C6, C7, C8 C7 MVT LT 2.pdf
See
Publications LT Delay 3 C10, C11, C12, C13 C12 MVT LT 3.pdf
GES-9865 LT Delay 4 C15, C16, C17, C18 C18 MVT LT 4.pdf
GES-9863 ST Pickup -
MVT 1.5 - 9.0 in 0.5
increments ST Pickup Values may be set
according to old setting
DES-001B ST Pickup -
Power+ 1.5, 2, 2.5, 3, 4, 5,
7, 9 ST Pickup Values may be set
according to old setting
DES-002B ST Delay 1 (Min) Bands 5, 6, 7 Band 6 MVT ST 1(Min).pdf
ST Delay 2 (Int) Bands 8, 9 Band 9 MVT ST 2(Int).pdf
ST Delay 3 (Max) Bands 10, 11 Band 11 MVT ST 3(Max).pdf
ST I 2 T Out / Off ST Slope = 0 (OFF) ST Slope = 0 (OFF) see above curves
ST I 2 T In / On ST Slope = 3 (Max) ST Slope = 3 (Max) MVT ST I2T.pdf
Inst Dependent on
trip unit rating Instantaneous Pickup Values
may be set according to old
setting
GF Pickup Dependent on
trip unit rating GF Pickup Values may be set
according to old setting
GF Delay 1 (Min) Bands 3, 4 Band 4 MVT GF 1(Min).pdf
GF Delay 2 (Int) Band 7 Band 7 MVT GF 2(Int).pdf
GF Delay 3 (Max) Bands 8, 9 Band 9 MVT GF 3(Max).pdf
GF I 2 T Out / Off GF Slope = 0 (OFF) ST Slope = 0 (OFF) see above curves
GF I 2 T In / On GF Slope = I 2 T GF Slope = I 2 T MVT GF I2T.pdf