Component Guide

DET-654C
Guide to Low Voltage System Design and Selectivity
© 2014 General Electric All Rights Reserved 21
TX Inrush
135 A
510
100 1K 10K 100K
0.01
0.10
1
10
100
1000
CURRENT IN AMPERES
TIME IN SECONDS
TR-20 PRIMARY FEEDER
GE
FG Record Plus, SMR2
Trip 400.0 A
Plug 175.0 A
L20 MAIN
GE
FG Record Plus, SMR2
Trip 600.0 A
Plug 400.0 A
L20 LARGESTA
GE
FE Record Plus, SMR1
Trip 250.0 A
Plug 175.0 A
TR20 UPSTREAM SMALLEST
GE
SK, MET, EXT WITH ZSI
Trip 800.0 A
Plug 800.0 A
L20A BRANCH
GE
THQB
Trip 30.0 A
TR-20
112.5 kVA
Z% 5.0000 %
TR-20 PRIMARY FEEDER
GE
FG Record Plus, SMR2
Trip 400.0 A
Plug 175.0 A
L20 MAIN
GE
FG Record Plus, SMR2
Trip 600.0 A
Plug 400.0 A
L20 LARGESTA
GE
FE Record Plus, SMR1
Trip 250.0 A
Plug 175.0 A
TR20 UPSTREAM SMALLEST
GE
SK, MET, EXT WITH ZSI
Trip 800.0 A
Plug 800.0 A
L20A BRANCH
GE
THQB
Trip 30.0 A
TR-20
112.5 kVA
Z% 5.0000 %
SELECTIVE PER
DET-760B, TABLE 5
SELECTIVE PER
DET-760, TABLE 5
SPECTRA PP
1 PO LE ON LY
SPECTRA PP, 10kA
AQ ML O, 10 kA
UTIL-0020
Isc 3P 60000 Amps
TR-20 PRIMARY FEEDER
GE
FG Record Plus, SMR2
Frame/Model FGN
Sensor/Trip 400 A
Plug 175 A
AIC 65 kA
Settings
LTPU / LTD Fixed (175A) ; 1.25
STPU (1.5-10 x LTPU ) 10X (1750A)
STD (0.04 - 0.42s) 0. 04 (I^2t Out)
INST (2 - 11 x S) 11X (4400A)
S
P
TR-20
Si ze 112.5 kVA
Pri De lta
Sec Wye-Ground
%Z 5.00 00 %
L20 MAIN
GE
FG Record Plus, SMR2
Frame/Model FGN
Sensor/Trip 600 A
Plug 400 A
AIC 15 0 kA
Settings
LTPU / LTD Fixed (400 A) ; 1.25
STPU (1.5-10 x LTPU) 10X (4 000A)
STD (0.04 - 0.42s) 0. 04 (I^2t Out)
INST (2 - 11 x S) 11X (6600A)
L20 LARGESTA
GE
FE Record Plus, SMR1
Frame/Model FEN
Sensor/Trip 250 A
Plug 175 A
AIC 15 0 kA
Settings
LTPU (F ixed, 1 x P) Fixed (175 A)
INST (2 -13 x S) 10 (2500A)
480V INST OR
L20
208 V
SCA 3P 5622 A
TR20 UPSTREAM SMALLEST
GE
SK, MET, EXT WITH ZSI
Frame/Model SKTC
Sensor/Trip 800 A
Plug 800 A
AIC 65 kA
Settings
LTPU (0 .5-1 x RP) 1.00X (800A) ; C-4
STPU (1.5-9 x LTPU) 9X (7200A)
STD Min (ST01 - ST12) ST01-Min (I^2t Out)
HSSTOC Fixed (12000A)
INST EXT (2-25.5 x S) 25.5X (20400A)
HSIOC Fixed (37620A)
L20A BR ANCH
GE
THQB
Frame/Model THQB
Sensor/Trip 30 A
AIC 10 kA
Settings
Fixed
L20B
208 V
SCA 3P 5347 A
TCC: 112.5 SK EXT MET 3 TIER Current Scale x 1 Reference Voltage: 208
8