masterpact m strs
TRANSCRIPT
8/12/2019 Masterpact M STRs
http://slidepdf.com/reader/full/masterpact-m-strs 1/8
Instruction Bulletin48049-107-01
12/2001Cedar Rapids, IA, USA
ECN K455
Control Unit Replacement Instructions for MASTERPACT ® Circuit BreakerRetain for future use.
© 1996–2001 Schneider Electric All Rights Reserved 1
INSTALLATION
1. Remove power screws and lift off cover.
Remove Old Control Unit 2. Remove wire cover.
DANGER
HAZARD OF ELECTRIC SHOCK, BURN, OREXPLOSION
• This equipment must be installed andserviced only by qualified electricalpersonnel.
• Turn off all power supplying this equipmentbefore working on or inside equipment.
• Always use a properly rated voltage sensingdevice to confirm power is off.
• Replace all devices, doors and covers beforeturning on power to this equipment.
Failure to follow this instruction will result indeath or serious injury.
0 6 3 1 3 3 1 9
0 6 3 1 3 3 2 0
0 6 3 1 3 3 2 1
0 6 3 1 3 3 2 1
0 6 3 1 3 3 2 2
8/12/2019 Masterpact M STRs
http://slidepdf.com/reader/full/masterpact-m-strs 2/8
Control Unit Replacement Instructions for MASTERPACT ® Circuit Breaker 48049-107-01Control Unit Replacement 12/2001
© 1996–2001 Schneider Electric All Rights Reserved2
3. Remove screws and lift control unit.
Install New Control Unit 4. Remove wire cover.
5. Connect wires, matching phases.
0 6 3 1 3 3 2 7
0 6 3 1 3 3 2 8
If replacement control unit has different featuresthan old control unit, terminal block (secondarydisconnects) on the circuit breaker and/or cradlemay have to be added or removed. Contactfactory for more information.
Neutral plug is only available on4-pole circuit breaker or 3-pole circuitbreaker with external neutral sensorconnection.
0 6 3 1 3 3 2 3
0 6 3 1 3 3 2 4
CAUTIONHAZARD OF EQUIPMENT DAMAGE
Connect wires to match phase sequence(N, 1, 2, or 3) between trip unit and circuitbreaker.
Failure to follow this instruction can result inequipment damage.
0 6 3 1 3 3 2 5
0 6 3 1 3 3 2 6
8/12/2019 Masterpact M STRs
http://slidepdf.com/reader/full/masterpact-m-strs 3/8
48049-107-01 Control Unit Replacement Instructions for MASTERPACT ® Circuit Breaker12/2001 Control Unit Replacement
© 1996–2001 Schneider Electric All Rights Reserved 3
6. Place control unit (A) on circuit breaker, tighten screws, (B) and replacewire cover (C).
0 6 3 1 3 3 3 1
A
0 6 3 1 3 3 3 2
B
62 lb-in(7 N•m)
0 6 3 1 3 3 3 3
C
Replace Circuit Breaker Cover
0 6 3 1 3 3 2 9
Replace cover.
0 6 3 1 3 3 3 0
13 lb-in(1.5 N•m)
Replace cover screws.
8/12/2019 Masterpact M STRs
http://slidepdf.com/reader/full/masterpact-m-strs 4/8
Control Unit Replacement Instructions for MASTERPACT ® Circuit Breaker 48049-107-01Control Unit Replacement 12/2001
© 1996–2001 Schneider Electric All Rights Reserved4
TESTING
This is an instantaneous tripping test (trips inless than one second) using a single-phaseprimary current injection between the line andload of each pole of the circuit breaker.
This tests the connection of thecurrent sensor to the control unitonly. This test is not designed tocalibrate the circuit breaker .Calibration tests are completedat the factory before shipping eitherthe circuit breaker or the control unitalone.
Test control unit according to the appropriate
table:• STR18M: see table 1• STR28D: see table 2• STR38S, STR58U
— with ground-fault protecton: see table 3 — without ground-fault protection: see
table 4
Io = rating plugIn = sensor ratingIr = long time pick up
tr = long time delaylm = short time pick uptm = short time delayI = instantaneous pick upIh = ground fault pick upth = ground fault delay
Table 1: STR18M
Testing Procedure Current to Inject*
1. Record the control unit settings.2. Adjust settings:
instantaneousl = 2
3. Program the injection time to 1500 ms.4. Inject the current pole-by-pole.5. Reset the control unit to the original settings.
Sensor rating (A) Current (A)
200 460
250 575
320 736
400 920
500 1150
600 1380
630 1449
800 1840
1000 2300
1200 2760
1250 2875
1600 3680
2000 4600
2500 5750
3000 6900
3200 7360
4000 9200
5000 11500
6000 13800
6300 14420
*Current injection = (2 X i n) + 15%
12 14
19
22max2
4
xIn
push to reset
STR 18
test
+
6
12 14
19
22max2
4
xIn
6l = 2
0
6 3 1 3 3 3 4
8/12/2019 Masterpact M STRs
http://slidepdf.com/reader/full/masterpact-m-strs 5/8
8/12/2019 Masterpact M STRs
http://slidepdf.com/reader/full/masterpact-m-strs 6/8
Control Unit Replacement Instructions for MASTERPACT ® Circuit Breaker 48049-107-01Control Unit Replacement 12/2001
© 1996–2001 Schneider Electric All Rights Reserved6
Table 3: STR38S, STR58U with Residual Ground-fault Protection(Option T)
Testing Procedure Current to Inject*
1. Record the control unit settings.2. Adjust settings:
long-timeIr = 0.8short-timeIm = 1.5tm = 0.1tm- l2t = offground-fault pickuplh = ln or 1200A max.th = 0.1th- l2t = off
3. Program the injection time to 1500 ms.4. Inject the current pole-by-pole.5. Reset the control unit to the original
settings.
Sensor Rating (A) Current (A)
125 144
150 173
200 230
250 288
300 345
400 460
500 575
600 690
800 920
1000 1150
1200 1380
1600 1380
2000 1380
2500 13803000 1380
3200 1380
4000 1380
5000 1380
6000 1380
6300 1380
*Current injection = l n (or 1200A) + 15%
push to reset
II1 I2 I3
90%
50%
20%
STR 38 S
Ir90
105%Ir
.88.9 .92
.95
.981.8
.85
xIo
Im tm
34 5
6
8101.5
2
xIr
.3.4 .3
.1.1
.2
on I2t off
.2
0
Ir fault
tr
Im faulttm
I
faultIh
th
t
i
test
+ –
– +
T
F
test
Ih th
400
500 600800
1000
1200250
320
A
.3.4 .4
.2.1
.2
on I2t off
.3
.1
I
offmax.xIn
Ir :
Im :
th :
overcurrent
ground
20%
Ir90
105%Ir
.88.9 .92
.95
.981.8
.85
xIo
Im tm
34 5
6
8101.5
2
xIr
.3.4 .3
.1.1
.2
on I2t off
.2
0
Ir fault
tr
Im faulttm
I
faultIh
th
t
i
+ –
TIh th
400500 600
800
1000
1200250
320
A
.3.4 .4
.2.1
.2
on I2t off
.3
.1
I
offmax.xIn
Ir :
Im :
th :
overcurrent
0 6 3 1 3 3 3 6 Settings
Ir = 0.8
Im = 1.5
tm = 0.1
tm - I2
t = off
Ih = at max.
th = 0.1
th - I2t = off
8/12/2019 Masterpact M STRs
http://slidepdf.com/reader/full/masterpact-m-strs 7/8
48049-107-01 Control Unit Replacement Instructions for MASTERPACT ® Circuit Breaker12/2001 Control Unit Replacement
© 1996–2001 Schneider Electric All Rights Reserved 7
Table 4: STR38S, STR58U Without Residual Ground-fault Protection(Option T) With or Without “Source Ground Return”Ground-fault Protection (Option W)
Testing Procedure Current to Inject*
1. Record the control unit settings.
2. Adjust settings:long-timelr = 0.8short-timeIm = 1.5tm = 0.1tm -l2t = off
3. Program the injection time to 1500ms.4. Inject the current pole-by-pole.5. Reset the control unit to the original
settings.
125 173
150 207200 276
250 345
300 414
400 552
500 690
600 828
800 1104
1000 1380
1200 1656
1600 2208
2000 2760
2500 3450
3000 4140
3200 4415
4000 5520
5000 6900
6000 8280
6300 8694
*Current injection = [(I o x 0.8) x 1.5] + 15%
push to reset I+T L+I
I
L+T
L off
T
L+I+T
II1 I2 I3
90%
50%
20%
STR 58 U
Ir tr90
105
τ tr
%Ir.88
.9 .92.95
.981.8
.85
xIo
60120 240
48015
30
at 1.5Ir
Im tm
34 5
6
8101.5
2
xIr
.3.4 .3
.1.1
.2
on I2t off
.2
0
Ir fault
tr
Im faulttm
I
faultIh
th
t
i
test
+ –
– +
T
R
F
test
Ih 1200AMax th
400500 600
800
10001200250
320
A
.3.4 .4
.2.1
.2
on I2t off
.3
.1
I
812 14
19
22Max.2
4
xIn
Ic1 Ic2.86
.9 .93.95
.981.8
.85
xIr
.7.8 .85
.95.5
.6
.9
1xIr
V
Ir :
Im :
th :
min.norm
overcurrent
ground
reset V
20%
Ir tr90
105
τ tr
%Ir.88
.9 .92.95
.981.8
.85
xIo
60120 240
48015
30
at 1.5Ir
Im tm
34 5
6
8101.5
2
xIr
.3.4 .3
.1.1
.2
on I2t off
.2
0
Ir fault
tr
Im faulttm
I
faultIh
th
t
i
T
R
Ih 1200A Max th400
500 600800
10001200250
320
A
.3.4 .4
.2.1
.2
on I2t off
.3
.1
I
812 14
19
22Max.2
4
xIn
Ic1 Ic2
Ir :
Im :
th :
min.norm
0 6 3 1 3 3 3 7
Rating plug = currentsensor (for this test)
Ir = 0.8
Im = 1.5
tm = 0.1
tm - I2t = off
8/12/2019 Masterpact M STRs
http://slidepdf.com/reader/full/masterpact-m-strs 8/8
Electrical equipment should be serviced only by qualified personnel. No responsibilityis assumed by Schneider Electric for any consequences arising out of the use of thismaterial. This document is not intended as an instruction manual for untrainedpersons.
Square D CompanyPO Box 30693700 Sixth St SWCedar Rapids IA 52406-3069 USA1-888-SquareD (1-888-778-2733)www.SquareD.com
© 1996–2001 Schneider Electric All Rights Reserved
Control Unit Replacement Instructions for MASTERPACT ® Circuit Breaker 48049-107-01Instruction Bulletin 12/2001
8