Littelfuse Startco SE-400 Series User manual

3714 Kinnear Place Saskatoon, SK Canada S7P 0A6 Ph: [phone] Fx: [phone] www.littelfuse.com/relayscontrols
SE-400 MANUAL
GROUND-FAULT-RELAY TEST UNIT
Revision 1-A-072115
GROUND-FAULT-RELAY TEST UNIT SE-400
AMPERES SECONDS
0.5
TO
9.9
0.1
TO
9.9
AMPERES
THERMAL
LIMIT
USE SWITCHES LABELLED TO SET
MAGNITUDE (0.5 TO 9.9 A) OF OUTPUT CURRENT.
USE SWITCHES LABELLED TO SET
DURATION (0.1 TO 9.9 s) OF OUTPUT CURRENT.
PRESS TO INITIATE OUTPUT CURRENT.
DISPLAY INDICATES MAGNITUDE OF OUTPUT
CURRENT FOR DURATION OF OUTPUT.
SET SWITCHES LABELLED TO 0.0 FOR
MANUAL CONTROL OF OUTPUT DURATION.
PUSH TO SWITCH OUTPUT ON OR OFF.
AMPERES
SECONDS
TEST
SECONDS
TEST
TEST
LITTELFUSE STARTCO
24 30
Copyright © 2015 by Littelfuse Startco
All rights reserved.
Document Number: PM-1605-EN
Printed in Canada.

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SE-400 Ground-Fault-Relay Test Unit Rev. 1-A-072115
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SE-400 Ground-Fault-Relay Test Unit Rev. 1-A-072115
TABLE OF CONTENTS
SECTION PAGE
1 General................................................................. 1
2 Operation............................................................. 1
2.1 Front-Panel Controls............................................. 1
2.1.1 Amperes..................................................... 1
2.1.2 Seconds...................................................... 1
2.1.3 Test ............................................................ 1
2.2 Indication .............................................................. 1
2.3 Thermal Limit ....................................................... 1
3 Installation........................................................... 1
4 Test Procedure .................................................... 1
5 Troubleshooting .................................................. 1
6 Technical Specifications...................................... 4
7 Ordering Information......................................... 4
8 Warranty ............................................................. 4
Appendix A SE-400 Revision History........................... 5
LIST OF FIGURES
FIGURE PAGE
1 SE-400 Outline and Mounting Details.................. 2
2 Panel-Mounting Procedure.................................... 3
3 Typical Connection Diagrams...............................3
DISCLAIMER
Specifications are subject to change without notice.
Littelfuse Startco is not liable for contingent or
consequential damages, or for expenses sustained as a
result of a malfunction, incorrect application, or incorrect
adjustment.

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SE-400 Ground-Fault-Relay Test Unit Rev. 1-A-072115
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Page 1
SE-400 Ground-Fault-Relay Test Unit Rev. 1-A-072115
1. GENERAL
The SE-400 is an ac current source with a
programmable output. The magnitude and duration of
the output can be selected with front-panel switches so
that ground-fault-relay coordination can be confirmed at
the push of a button.
The current output is transformer isolated from supply
voltage.
2. OPERATION
2.1 FRONT-PANEL CONTROLS
2.1.1 AMPERES
The AMPERES switch has four push buttons and a
two-digit numeric indicator to adjust current output to
the desired value. The range is 0.5 to 9.9 A. If a value
below 0.5 is selected, there will be no output.
2.1.2 SECONDS
The SECONDS switch has four push buttons and a
two-digit numeric indicator to adjust output duration.
The range is 0.1 to 9.9 s, or select 0.0 for continuous-
output operation.
2.1.3 TEST
Press TEST for an output burst of the magnitude and
duration selected by AMPERES and SECONDS. Press
TEST again to stop a continuous-output operation.
2.2 INDICATION
The two-digit LED display indicates the magnitude of
the output current for the duration of the output burst.
The centre decimal point serves as a supply voltage
indicator. A decimal point on the right side of the
display is used to indicate a thermal-limit condition.
2.3 THERMAL LIMIT
When the SE-400 is used in the continuous-output
mode, the internal circuit temperature can reach the
thermal-limit temperature. To prevent damage to the
SE-400, the current output is disabled and the thermal-
limit indicator turns on. The output remains disabled
until the temperature has fallen to a safe level, at which
time the thermal-limit indicator turns off and the output
is enabled.
3. INSTALLATION
SE-400 outline and mounting details are shown in
Fig. 1. Panel-mounting procedures are shown in Fig. 2.
Connect L1 and L2 to supply voltage using L2 as N.
Connect ground terminal 1 ( ) to ground. Loop an
output conductor through the windows of the ground-
fault CT's connected to the ground-fault relays under test.
Connect one end of the output conductor to terminal 1
(OP1) and the other end to terminal 12 (OP2). For
output-conductor lengths under 40 ft, use 14 gauge wire.
For output-conductor lengths over 40 ft and up to 80 ft,
use 12 gauge wire.
If remote operation is required, connect a normally
open momentary contact to terminals 8 and 9 (RMT1 and
RMT2). Low-level contacts are recommended.
Typical connection diagrams are shown in Fig. 3.
4. TEST PROCEDURE
Set the required output current level0.5 to 9.9 A.
The recommended test current is 120% of the ground-
fault trip level of the device being tested.
Set the output duration0.1 to 9.9 s or 0.0 for push-on
push-off operation.
Press the TEST button. The ground-fault unit(s) being
tested should trip.
5. TROUBLESHOOTING
Problem:
No current output when the TEST button is pressed.
Possible Causes:
Loose output connections.
Resistance of the output wire is too high.
VA requirement of the load is too high.
Current is set to less than 0.5 A.
No supply voltage.
Thermal limit exceeded.
Power-supply fuse F1 open.
Troubleshooting:
Check the SE-400 operation by connecting a short
length of wire across the output terminals and
pressing the TEST button.
If using a remote test switch, check remote switch
operation and connection to the SE-400.

Page 2
SE-400 Ground-Fault-Relay Test Unit Rev. 1-A-072115
R=4. 8 (0.19)
MAXIMUM
R=2. 2 (0.09)
1
2
3
4
5
6
7
8
9
10
12
L1
L2
RMT1
RMT2
OP 1
OP2
11
F1
104.0
(4.09)
3.4
(0.13)
91.7
(3.61)
212.7
(8.37)
218.4
(8.60)
139.7
(5.50)
3.2
(0.12)
PANELTHICKNESS
1.6 (0.06)TO 4.8 (0.19)
GROUND-FAULT-RELAY TEST UNIT SE-400
AMPERES SECONDS
0.5
TO
9.9
0.1
TO
9.9
AMPERES
THERMAL
LIMIT
USE SWITCHES LABELLED TO SET
MAGNITUDE (0.5 TO 9.9 A) OF OUTPUT CURRENT.
USE SWITCHES LABELLED TO SET
DURATION (0.1 TO 9.9 s) OF OUTPUT CURRENT.
PRESS TO INITIATE OUTPUT CURRENT.
DISPLAY INDICATES MAGNITUDE OF OUTPUT
CURRENT FOR DURATION OF OUTPUT.
SET SWITCHES LABELLED TO 0.0 FOR
MANUAL CONTROL OF OUTPUT DURATION.
PUSH TO SWITCH OUTPUT ON OR OFF.
AMPERES
SECONDS
TEST
SECONDS
TEST
TEST
LITTELFUSE STARTCO
24 30
REAR VIEW SIDE VIEW FRONT VIEW
14.1
(0.56)
63.5
(2.50)
5.0
(0.20)
M4 OR 8-32TAP
(NOTE 2)
203.2
(8.00)
REAR PANEL
OUTLINE
SURFACE MOUNT
NOTES:
1. DIMENSIONS IN MILLIMETRES
(INCHES).
2. MOUNTING SCREWS:
M4 x 10 OR 8-32 x 0.375.
2.5
(0.10)
98.4
(3.87)
93.3
(3.67)
76.2
(3.00)
6.4
(0.25)
195.0
(7.68)
200.0
(7.87)
212.7
(8.37)
2.5
(0.10)
2.5
(0.10)
2.5
(0.10)
BEZEL
OUTLINE
2.5
(0.10)
8.2
(0.32)
8.2
(0.32)
6.4
(0.25)
PANEL-MOUNT CUTOUT
FIGURE 1. SE-400 Outline and Mounting Details.

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SE-400 Ground-Fault-Relay Test Unit Rev. 1-A-072115
1
2
3
4
5
6
7
8
9
10
12
L1
L2
RMT1
RMT2
OP 1
OP2
1
2
3
4
5
6
7
8
9
10
L1
L2
RMT1
RMT2
OP 1 11
12 OP2
11
1
2
3
4
5
6
7
8
9
10
12
L1
L2
RMT1
RMT2
OP 1
OP2
11
STEP 1 STEP 3STEP 2
THE SE-400 MAY BE PANEL MOUNTED WITHOUT
DISASSEMBLY.
NOTE: REMOVE PLUG-INTERMINAL BLOCK BEFORE
INSTALLING SE-400THROUGH PANEL.
FIGURE 2. Panel-Mounting Procedure.
NEUTRAL
TO SE-330
TO SENSING
RESISTOR
TERMINAL N NGR
12
11 OP2
OP1
3
5
1
LL1
L2
N
RMT1
RMT2
8
9
REMOTE
TEST
SE-400
NOTE:
1. FOR DEVICES WITH LOWERTRIP LEVELS SUCH ASTHE
SE-704 USETHE CIRCUIT AT RIGHT. RESISTORS R1 AND
R2 WILL LOWER TEST CURRENTTO 10% OF SE-400 SETTING.
2. FOR ATEST CURRENT HIGHERTHAN 9.9 A, USE MULTIPLE
OUTPUT-CONDUCTOR WRAPSTHROUGH THE CT WINDOW.
ITEST
FROM
POWER
SOURCE
SE-CS30
LOAD
45
S1 S2
11
10
L1
L2/N
R1 L
N
R2
12
11 OP2
OP1
3
5
1
LL1
L2
N
RMT1
RMT2
8
9
REMOTE
TEST
R1 = 1 Ω, 10 W, 1%
R2 = 0.1 Ω, 10 W, 1%
I
TEST
= 1/10 SE-400 SETTING
SE-704
SE-400
FIGURE 3. Typical Connection Diagrams.

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SE-400 Ground-Fault-Relay Test Unit Rev. 1-A-072115
6. TECHNICAL SPECIFICATIONS
Supply :
120 Vac...............................80 VA, 120 Vac,
(+12, -30%), 50/60 Hz
240 Vac...............................80 VA, 240 Vac,
(+12, -30%), 50/60 Hz
Fuse Rating (F1).......................1 A, 250 Vac
Fuse Part Number.....................Littelfuse 313.001 or
Bussman AGC1
Output:
Current Setting....................0.5 to 9.9 A,
0.1-A increments
Duration Setting..................0.1 to 9.9 s,
0.1-s increments
or continuous
Maximum Burden...............0.13 ohms
Voltage ...............................5.0 Vac maximum
Duty Cycle at 25°C (77°F):
12 VA...............................Continuous
34 VA Maximum.............15 minutes ON
30 minutes OFF
Accuracy.............................± 3%
PWB Conformal Coating .........MIL-1-46058 qualified,
UL QMJU2 recognized
Dimensions:
Height.................................212.7 mm (8.4”)
Width..................................104.0 mm (4.1”)
Depth ..................................142.9 mm (5.6”)
Shipping Weight.......................2.2 kg (4.8 lb)
Environment:
Operating Temperature.......-40 to 60C (-40 to
140°F)
Storage Temperature...........-55 to 80C (-67 to
160°F)
7. ORDERING INFORMATION
SE-400-
BLANK – 120-Vac Supply
02 – 240-Vac Supply
SE-410.........................................Selector Switch
SE-400IRC..................................Impact Resistant Case
8. WARRANTY
The SE-400 Ground-Fault-Relay Test Unit is warranted
to be free from defects in material and workmanship for a
period of five years from the date of purchase.
Littelfuse Startco will (at Littelfuse Startco’s option)
repair, replace, or refund the original purchase price of an
SE-400 that is determined by Littelfuse Startco to be
defective if it is returned to the factory, freight prepaid,
within the warranty period. This warranty does not apply
to repairs required as a result of misuse, negligence, an
accident, improper installation, tampering, or insufficient
care. Littelfuse Startco does not warrant products repaired
or modified by non-Littelfuse Startco personnel.

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SE-400 Ground-Fault-Relay Test Unit Rev. 1-A-072115
APPENDIX A
SE-400 REVISION HISTORY
MANUAL
RELEASE DATE MANUAL REVISION PRODUCT REVISION (REVISION NUMBER ON PRODUCT LABEL)
July 21, 2015 1-A-072115 05B
MANUAL REVISION HISTORY
REVISION 1-A-072115
S
ECTION 5
Fig. 3 updated.
S
ECTION 6
Voltage and accuracy specifications added.
A
PPENDIX A
Revision history added.
PRODUCT REVISION HISTORY
PRODUCT REVISION 05B
Current release.

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