Littlefuse Startco SE-134C User manual

3714 Kinnear Place Saskatoon, Saskatchewan Canada S7P 0A6 Ph: [phone] Fx: [phone] www.startco.ca
SE-134C MANUAL
GROUND-FAULT GROUND-CHECK MONITOR
DECEMBER 16, 2009
REVISION 5
GROUND-FAULT
GROUND-CHECK
MONITOR
GF TRIP LEVEL (A)
GF TRIP TIME (S)
POWER
DIAGNOSTIC
ERROR
.10
.50
.20
.75
.30
1.0
.40
1.5
.50
2.0
.70
2.5
1.0
1.3
5.0
1.6
7.5
2.0
10.0
2.5
12.5
GC
TEST
RESET
SHORT
OPEN
VALID
TRIP
GROUND
CHECK
SENSOR
TRIP
GROUND
FAULT
3.0
SHORT
OPEN
VALID
TRIP
GROUND
CHECK
5
A
N
G
R
5
A
N
G
R
1
5
R
A
N
G
1
5
R
A
N
G
2
5
A
N
G
R
2
5
A
N
G
R
SE-134C
Copyright ©2009 by Littelfuse Startco.
All rights reserved.
Publication: SE-134C-M
Document: S95-C34C-00000
Printed in Canada.

Page i
SE-134C Ground-Fault Ground-Check Monitor Rev. 3
Pub. SE-134C-M, December 16, 2009.
TABLE OF CONTENTS
PAGE
Table of Contents .............................................................. i
List of Figures ................................................................... i
1. General ................................................................... 1
2. Operation ............................................................... 1
2.1 Ground-Fault Circuit ............................................... 1
2.1.1 GF Trip Time Setting .................................... 1
2.1.2 GF Trip Level Setting ................................... 1
2.2 Ground-Check Circuit ............................................. 1
2.3 Reset........................................................................ 2
2.4 Trip Relay................................................................ 2
3. Indication ............................................................... 2
3.1 Ground Fault ........................................................... 2
3.2 Ground Check ......................................................... 2
3.3 Power....................................................................... 2
3.4 Diagnostic Error ...................................................... 2
4. Installation ............................................................. 2
4.1 General .................................................................... 2
4.2 Monitor.................................................................... 3
4.3 Current Sensors ....................................................... 3
4.4 Termination Assembly ............................................ 3
4.5 Remote Operation ................................................... 3
4.6 Parallel-Path Isolation ............................................. 3
5. Technical Specifications...................................... 12
5.1 SE-134C ................................................................ 12
5.2 Current Sensors ..................................................... 13
5.3 Termination Assemblies........................................ 13
6. Ordering Information ......................................... 13
7. Warranty.............................................................. 14
8. Test Procedures ................................................... 14
8.1 Ground-Check Trip Tests...................................... 14
8.1.1 Latching Ground-Check Trip Test .............. 14
8.1.2 Non-Latching Ground-Check Trip Test...... 14
8.2 Trip Relay Fail-Safe Mode Test............................ 14
8.3 Current Sensor Verification Test........................... 14
8.4 SE-TA6A-Series Termination Assembly Tests..... 15
8.5 Ground-Fault Performance Test............................ 15
LIST OF FIGURES
FIGURE PAGE
1 SE-134C Typical Application ..................................4
2 SE-134C Outline and Panel-Mounting Details ........5
3 SE-134C Outline and Surface-Mounting Details .....6
4 SE-CS10 Current Sensors ........................................7
5 SE-TA6A and SE-TA6A-WL Termination
Assemblies............................................................8
6 SE-TA6ASF-WL Small-Format
Termination Assembly .........................................9
7 RK-132 Remote Indication and Reset......................9
8 PPI-600V Parallel-Path Isolator .............................10
9 PPI-600V Typical Application...............................11
10 Ground-Fault-Test Circuit......................................16
11 Termination-Assembly-Test Circuits .....................16
LIST OF TABLES
TABLE PAGE
1 Ground-Fault-Test Record .....................................15
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 incorrect application, incorrect adjustment, or a
malfunction.

Page 1
SE-134C Ground-Fault Ground-Check Monitor Rev. 4
Pub. SE-134C-M, December 16, 2009.
1. GENERAL
The SE-134C is a microprocessor-based, combination
ground-fault and ground-wire monitor for resistance-
grounded systems. It has a switching power supply that
accepts a wide range of ac and dc voltages, its
specifications apply over an industrial temperature range
at high humidity, and it meets the IEEE surge-withstand-
capability tests (oscillatory and fast transient) for
protective relays and relay systems. Isolated, normally
open and normally closed contacts are provided for
contactor control or for shunt or undervoltage operation
in a breaker-trip circuit. All operating conditions are
clearly annunciated and two Form C contacts are
provided for remote indication. The SE-134C is housed
in an anodized extruded-aluminum enclosure, and all
connections are made with plug-in, wire-clamping
terminal blocks. Provision is made for both panel and
surface mounting.
The ground-fault circuit detects fundamental-
frequency, zero-sequence current with a window-type
current sensor and it verifies that the current sensor is
connected and not shorted. A definite-time characteristic
with 11 trip levels and 11 trip times allows coordination
in virtually any resistance-grounded system. Although
other current sensors may satisfy the verification circuit,
only SE-CS10-series sensors have characteristics that
meet system specifications. Current-sensor verification
can be disabled for a ground-check-only application.
The ground-check circuit has an open-circuit voltage of
24 Vdc, which is not a hazard to personnel, and it has an
output drive current above 100 mA for optimum
performance in slip-ring, commutated-load, and high-
induced-ac applications. Features include an externally
accessible ground-check fuse, a resistance-insertion test,
3-kV isolation between the ground-check loop and the
monitor electronics, and a PPI-600V accessory for
parallel-ground-path rejection. A PPI-600V will also
eliminate intermachine arcing and prevent stray ac and dc
currents from flowing in the monitored ground wire.
Unlike ground-check circuits using other termination
devices, and especially those with phase-reversal
switches, a ground-check circuit using a termination
device with a Zener characteristic is capable of loop
measurements that are independent of current in the phase
conductors. The SE-134C ground-check circuit
recognizes the SE-TA6A-series 5.6-volt Zener
characteristic as a valid end-of-line completion. This is
the only passive characteristic that will satisfy the ground-
check circuit’s multi-level drive, allow induced currents
to circulate in the ground-check loop, survive a phase-to-
ground-check fault, and clamp the ground-check voltage
during the fault. Although a standard 5.6-volt Zener
diode may engage the SE-134C’s ground-check circuit,
only an SE-TA6A-series termination assembly has the
compensation required to meet system specifications. In
select applications, a combination of an SE-TA12A and
SE-TA12B Termination Assemblies can be used to
monitor the cables of a splitter box (junction box) using a
single SE-134C Monitor. See Technical Note GC-11,
available at www.startco.ca.
2. OPERATION
2.1 GROUND-FAULT CIRCUIT
2.1.1 GF TRIP TIME SETTING
The ground-fault circuit has a definite-time
characteristic with 11 settings from 0.1 to 2.5 seconds.
Time-coordinated ground-fault protection requires the trip
time to be longer than the trip time of downstream
ground-fault devices.
2.1.2 GF TRIP LEVEL SETTING
The trip level of the ground-fault circuit is switch
selectable with 11 settings from 0.5 to 12.5 A. A
minimum tripping ratio of 5 is recommended to achieve at
least 80% winding protection, and this requires the trip
level to be less than 20% of the grounding resistor let-
through current. Suggested trip-level ranges for 5-, 15-,
and 25-A neutral-grounding resistors are indicated on the
faceplate. A ground-fault trip is latched, requiring a reset.
A current-sensor failure will also cause a ground-fault
trip. See Section 3.1
If the SE-134C is operated in a ground-check-only
application and an SE-CS10 is not connected, connect
terminals 17 and 18 to disable sensor verification. See
Fig. 1.
2.2 GROUND-CHECK CIRCUIT
The ground-check loop consists of the outgoing
ground-check conductor, quick-coupler connections, the
SE-TA6A-series termination assembly, the SE-TA6A
connection to equipment frame or ground bus, the
ground-return path, and the SE-134C cable-ground-
terminal connection to substation ground.
The SE-134C detects a valid ground-check loop when
an SE-TA6A-series termination assembly is detected in
the loop and loop resistance is less than 28 ohms. The
loop is not valid if open (or high resistance), or if the
ground-check conductor is shorted to ground.
When the ground-check loop is valid, the SE-134C
ground-check circuit can be tested by pressing the GC
TEST switch or by shorting GC TEST terminals 11 and
12. This test invalidates the loop by inserting 47 Ωin the
ground-check loop and a trip should occur in less than
250 ms.
The ground-check circuit is usually operated in the
non-latching mode; however, it can be operated in the
latching mode by connecting terminals 14 and 15.
The ground-check circuit is protected by a 1.5-A time-
delay fuse (F1).

Page 2
SE-134C Ground-Fault Ground-Check Monitor Rev. 3
Pub. SE-134C-M, December 16, 2009.
If the SE-134C is used in a ground-fault-only
application, an SE-TA6A must be connected to the
ground-check and cable-ground terminals to validate the
ground-check circuit. See Fig. 1.
2.3 RESET
All ground-fault trips are latching and ground-check
trips can be latching or non-latching. To reset ground-
fault trips or latching ground-check trips, press the
RESET switch or short the RESET terminals 9 and 10.
See Fig. 1.
Cycling the supply voltage will also reset ground-fault
trips; however, if the ground-check circuit is configured
for latching fail-safe operation, the ground-check circuit
will trip when supply voltage is applied.
The single-shot reset circuit responds only to a
momentary closure; a jammed or shorted switch will not
maintain a reset signal.
2.4 TRIP RELAY
Isolated, normally open (Trip A, terminals 24 and 25)
and normally closed (Trip B, terminals 22 and 23)
contacts are provided for use in a contactor- or breaker-
control circuit. With no connection between terminals 12
and 13, the SE-134C trip relay operates in the fail-safe
mode. This mode is used with undervoltage devices
where the trip relay energizes and its normally open
contact closes if the ground-fault and ground-check
circuits are not tripped. This mode is recommended
because:
— Undervoltage devices release if supply voltage
fails.
— Undervoltage ground-check circuits do not allow
the power circuit and open cable couplers to be
energized until the ground-check loop is verified.
The fail-safe mode of operation of the SE-134C trip
relay can be used for shunt-trip circuits with a stored-
energy trip source. In this case, the normally closed trip
contact is used—the contact opens when the SE-134C is
energized and the ground-fault and ground-check circuits
are not tripped. Care must be taken to ensure safe and
correct operation during power up and power down.
Connect terminals 12 and 13 for non-fail-safe trip relay
operation with shunt-trip devices. In this mode, the
normally open trip contact is used—the trip contact is
closed when a ground-fault or ground-check trip occurs.
Shunt-trip circuits are not fail-safe and are not
recommended because:
— Shunt-trip devices do not operate if supply voltage
fails.
— Shunt-trip ground-check circuits allow the power
circuit and open cable couplers to be energized for
a short interval after supply voltage is applied.
CAUTION: The SE-134C is not a lock-out device. Follow
lock-out procedures for maintenance.
3. INDICATION
3.1 GROUND FAULT
A red LED indicates a ground-fault trip and the
remote-indication relay GF is energized when the ground-
fault circuit is not tripped (fail-safe indication-contact
operation). A green LED indicates a current sensor is
correctly connected. If the SE-CS10-series current sensor
is disconnected or shorted, the green LED will go out and
the ground-fault circuit will trip. If the sensor fault is
intermittent, the ground-fault circuit will trip and the
green LED will flash to indicate that the trip was initiated
by a sensor fault.
3.2 GROUND CHECK
A red LED indicates a ground-check trip. A green
LED indicates a valid ground-check loop and the remote-
indication relay GC is energized when the ground-check
loop is valid (fail-safe indication-contact operation). Two
yellow LED’s indicate the status of an invalid ground-
check loop. OPEN indicates the loop resistance exceeds
the trip resistance and SHORT indicates the ground-check
conductor is shorted to the ground conductor. A flashing
yellow LED indicates the corrected cause of a latched
ground-check trip.
3.3 POWER
The green POWER LED indicates that the internal
power supply is on.
3.4 DIAGNOSTIC ERROR
The red DIAGNOSTIC ERROR LED indicates that an
internal error caused the SE-134C to trip. Return the
SE-134C to the factory if a reset does not clear the trip.
Induced ac current in the ground-check loop can cause
the LED to flicker. This is a normal condition and does
not indicate a diagnostic error; the ground-check
monitoring circuit is not affected.
4. INSTALLATION
4.1 GENERAL
This ground-fault ground-check monitoring system
consists of an SE-134C Monitor, an SE-CS10-series
Current Sensor, and an SE-TA6A-series Termination
Assembly connected as shown in Fig. 1. Select
applications can use a combination of SE-TA12A and
SE-TA12B Termination Assemblies. See Technical Note
GC-11. If required, remote indication and reset can be
with standard pilot devices, or with an RK-132 Remote-
Indication-and-Reset Kit.

Page 3
SE-134C Ground-Fault Ground-Check Monitor Rev. 3
Pub. SE-134C-M, December 16, 2009.
4.2 MONITOR
Each SE-134C is packaged with both panel- and
surface-mounting hardware.
Outline and panel-cutout dimensions for the SE-134C
are shown in Fig. 2. To panel mount the SE-134C, insert
it through the panel cutout and secure it with the four
supplied 8-32 locknuts and flat washers.
All connections to the SE-134C are made through
plug-in, wire-clamping terminal blocks for 24 to 12 AWG
(0.2 to 2.5 mm2) conductors. Each plug-in terminal block
can be secured to the monitor by two captive screws for
reliable connections in high-vibration applications.
Outline dimensions and mounting details for surface
mounting an SE-134C are shown in Fig. 3. Fasten the
surface-mount adapter to the mounting surface and make
connections to the adapter terminal blocks. Follow the
instructions on Fig. 3 to mount or remove the SE-134C.
The option -00 power supply operates from 60 to
265 Vac and 80 to 370 Vdc. The option -10 power
supply operates from 24 to 48 Vdc. Use terminal
2 (L2/N) as the neutral terminal on ac systems or the
negative terminal on dc systems.
NOTE: On revision 5 and newer units, terminal 3 (SPG)
is internally connected to terminal 4. For these units an
external terminal-3-to-terminal-4 connection is not
required, nor is it necessary to remove the terminal-3
connection for dielectric-strength testing.
4.3 CURRENT SENSORS
Outline dimensions and mounting details for the
SE-CS10-series current sensors are shown in Fig. 4. Pass
only phase conductors through the sensor window as
shown in Fig. 1. If a shield, ground, or ground-check
conductor enters the sensor window, it must be returned
through the window before it is terminated. Connect the
current sensor to terminals 16 and 17. Ground terminal
17. Current-sensor primary and secondary connections
are not polarity sensitive.
4.4 TERMINATION ASSEMBLY
Outline dimensions and mounting details for the
SE-TA6A, SE-TA6A-WL, and SE-TA6ASF-WL are
shown in Figs. 5 and 6. Install the SE-TA6A at the load
to complete the ground-check loop as shown in Fig. 1.
Connect terminal G of the SE-TA6A to the equipment
frame so that the ground-conductor-to-equipment-frame
connection will be included in the monitored loop.
4.5 REMOTE OPERATION
Remote indication contacts and a reset input are
provided for remote indication and remote reset as shown
in Fig. 1.
The optional 22-mm-component RK-132 Remote Kit is
shown in Fig. 7. Connect terminals of the green ground-
check indicator to SE-134C terminals 26 and 27 and the
red ground-fault indicator to terminals 19 and 21. For
remote reset, connect the normally open push-button
switch across terminals 9 and 10.
4.6 PARALLEL-PATH ISOLATION
A PPI-600V can be used for parallel-path rejection. A
PPI-600V will also eliminate inter-machine arcing and
prevent stray ac and dc currents from flowing in
the monitored ground wire. See Figs. 8 and 9. See
Technical Note GC-10 “Parallel Path Isolator” at
www.startco.ca, or contact Littelfuse Startco for
application details.

Page 4
SE-134C Ground-Fault Ground-Check Monitor Rev. 4
Pub. SE-134C-M, December 16, 2009.
SE-CS10
GROUND
LOAD
GROUND CHECK
GROUND-CHECK
TERMINATION
STOP START
HOLD-IN
CONTACT
ALTERNATE TERMINATION CIRCUIT
FOR REMOTE CONTACTOR CONTROL
UV
N
L
3
4
11
12
9
10
26
19
22
24
1L1 L2/N 2
25
23
20
21
27
28
16
17
18
TRIP A
TRIP B
GF
GF
GC
GC
SE-134C
RESET
REMOTE RESET
GC
TEST
CURRENT
SENSOR
REMOTE GC TEST
SPG
5
6
7
8
GROUND
CHECK
CONNECT 17 & 18 TO
DISABLE SENSOR
VERIFICATION
CABLE
GROUND
GC INDICATOR
GF INDICATOR
GC G
SE-TA6A
GC G
SE-TA6A
13
14
15
CONNECT 12 & 13
FOR NON-FAIL-SAFE
OPERATION OF THE
TRIP RELAY
CONNECT 14 & 15
FOR LATCHING
GROUND CHECK
NFS
GROUND-
CHECK
LATCH
DISABLE
SENSOR
VERIFICATION
R
G
NOTES
1. RELAY CONTACTS SHOWN WITH
SE-134C DE-ENERGIZED.
TERMINALS 3/4, 5/6, AND 7/8 ARE
INTERNALLY CONNECTED.
THE RK-132 REMOTE INDICATION
AND RESET KIT CONTAINS
1 - RED LED PILOT LIGHT WITH
LEGEND PLATE “GROUND CHECK”.
1 - GREEN LED PILOT LIGHT WITH
LEGEND PLATE “GROUND FAULT”
1 - YELLOW PUSHBUTTON WITH
LEGEND PLATE “RESET”.
2.
3.
NOTE 2
FIGURE 1. SE-134C Typical Application.

Page 5
SE-134C Ground-Fault Ground-Check Monitor Rev. 5
Pub. SE-134C-M, December 16, 2009.
PANEL-MOUNT CUTOUT
76.2
(3.00)
25.425.4
(1.00)(1.00)
8.2
(0.32)
4.4 (0.173) DIA
4 LOCATIONS
R=4.8 (0.19)
MAXIMUM
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
92.7
76.2
(3.65)
(3.00)
186.0
7.0
200.0
(7.32)
(0.28)
(7.87)
SIDE VIEW
PANEL THICKNESS
1.6 (0.06) TO 4.8 (0.19)
16.0
(0.63)
145.0
(5.71)
185.4
35.0
(7.30)
(1.38)
CLEARANCE REQUIRED
FOR FUSE ACCESS
F1
REAR VIEW
91.7
(3.61)
1
4
2
3
-
-
-
-
L1
L2/N
SPG
5
6
GROUND
CHECK
7
8
CABLE
GROUND
9
10
11
12
13
14
15
16
17
18
RESET
GC TEST
NFS
GC LATCH
CURRENT SENSOR
DISABLE SENSOR
VER I FI CATI O N
19
20
21
22
23
24
25
26
27
28
GF
GC
TRIP B
TRIP A
FUSE F1: 1.5 A 500 VAC TIME DELAY
F1
FRONT VIEW
98.3
(3.87)
212.6
(8.37)
GROUND-FAULT
GROUND-CHECK
MONITOR
GF TRIP LEVEL (A)
GF TRIP TIME (S)
POWER
DIAGNOSTIC
ERROR
.10
.50
.20
.75
.30
1.0
.40
1.5
.50
2.0
.70
2.5
1.0
1.3
5.0
1.6
7.5
2.0
10.0
2.5
12.5
GC
TEST
RESET
SHORT
OPEN
VALID
TRIP
GROUND
CHECK
SENSOR
TRIP
GROUND
FAULT
3.0
SHORT
OPEN
VALID
TRIP
GROUND
CHECK
5
A
N
G
R
5
A
N
G
R
1
5
R
A
N
G
1
5
R
A
N
G
2
5
A
N
G
R
2
5
A
N
G
R
SE-134C
FIGURE 2. SE-134C Outline and Panel-Mounting Details.

Page 6
SE-134C Ground-Fault Ground-Check Monitor Rev. 4
Pub. SE-134C-M, December 16, 2009.
(1.00)
25.4
(2.50)
63.5
215.9 5.0
(8.50) (0.20)
MOUNTING DETAIL
BEZEL OUTLINE
ADAPTER PANEL OUTLINE
(NOTE 2)
NOTES:
INSTALLATION
REMOVAL
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. MOUNTING SCREWS: M4 OR 8-32 PANHEAD.
LOOSEN RETAINER SCREWS, MOVE RETAINERS
OUTWARD, AND TIGHTEN RETAINER SCREWS.
MATE MONITOR WITH ADAPTER PLUG-IN TERMINALS.
LOOSEN RETAINER SCREWS TO LET RETAINERS
SNAP OVER MONITOR BACKPLATE.
LOOSEN RETAINER SCREWS, SLIDE RETAINERS AWAY
FROM MONITOR BODY, AND TIGHTEN RETAINER SCREWS.
PULL MONITOR FORWARD.
1.
2.
3.
1.
2.
ENSURE THAT RETAINERS ARE AGAINST MONITOR
BODY AND TIGHTEN RETAINER SCREWS.
GROUND-FAULT
GROUND-CHECK
MONITOR
GF TRIP LEVEL (A)
GF TRIP TIME (S)
POWER
DIAGNOSTIC
ERROR
.10
.50
.20
.75
.30
1.0
.40
1.5
.50
2.0
.70
2.5
1.0
1.3
5.0
1.6
7.5
2.0
10.0
2.5
12.5
GC
TEST
RESET
SHORT
OPEN
VALID
TRIP
GROUND
CHECK
SENSOR
TRIP
GROUND
FAULT
3.0
SHORT
OPEN
VALID
TRIP
GROUND
CHECK
5
A
N
G
R
5
A
N
G
R
1
5
R
A
N
G
1
5
R
A
N
G
2
5
A
N
G
R
2
5
A
N
G
R
98.3 152.0
114.3
8.0
(3.87) (5.98)
(4.50)
(0.31)
212.6
225.4
28.6
6.4
(8.37)
(8.87)
(1.13)
(0.25)
FRONT VIEW SIDE VIEW
FRONT VIEW
SE-134-SMA
9
10
11
12
13
14
15
16
17
18
RESET
GC TEST
NFS
GC LATCH
CURRENT SENSOR
DISABLE SENSOR
VERIFICATION
-
-
-
-
L1
L2/N
SPG
GROUND
CHECK
CABLE
GROUND
GF
GC
TRIP B
TRI P A
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
FUSE F1:
1.5 A
500 VAC
TIME
DELAY
1
2
3
4
5
6
7
8
RETAINER SCREW
RETAINER
CLEARANCE REQUIRED
FOR FUSE ACCESS
SE-134C
FIGURE 3. SE-134C Outline and Surface-Mounting Details.

Page 7
SE-134C Ground-Fault Ground-Check Monitor Rev. 3
Pub. SE-134C-M, December 16, 2009.
TOP MOUNTING DETAIL
FRONT
SIDE
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
A
B
G
E
D
D
C
E
C
C
F
H
SE-CS10-2.5
AND SE-CS10-4
SE-CS10-6 AND
SE-CS10-8
PART
NUMBER
DIMENSIONS MOUNTING
SCREW
H
AB C DEFG
SE-CS10-4
SE-CS10-6
SE-CS10-8
108.0 (4.25)
160.3 (6.31)
209.5 (8.25)
184.0 (7.24)
229.0 (9.00)
279.4 (11.00)
169.9 (6.69)
215.9 (8.50)
266.7 (10.50)
77.2 (3.04)
101.6 (4.00)
108.7 (4.28)
32.5 (1.28)
31.8 (1.25)
38.9 (1.53)
123.7 (4.87)
165.0 (6.50)
225.0 (8.86)
60.5 (2.38)
73.2 (2.88)
80.0 (3.15)
M4 (8-32)
M10 (0.375)
M10 (0.375)
H1
X1
TERMINAL LOCATION
MAY VARY
SE-CS10-2.5 63.5 (2.50) 135.1 (5.32) 124.0 (4.88) 72.6 (2.86) 27.9 (1.10) 69.9 (2.75) 54.4 (2.14) M4 (8-32)
I
138.2 (5.44)
171.5 (6.75)
200.7 (7.90)
88.9 (3.50)
J
138.2 (5.44)
171.5 (6.75)
200.7 (7.90)
N/A
I
J
DIMENSIONS
SE-CS10-X
CURRENT SENSOR
600V I NS. CLASS 10 KV BIL
1-800-TEC-FUSE (1-800-832-3873)
R
FIGURE 4. SE-CS10 Current Sensors.

Page 8
SE-134C Ground-Fault Ground-Check Monitor Rev. 4
Pub. SE-134C-M, December 16, 2009.
40.0
(1.57)
41.5 40.0
19.010.5 10.5
(1.63) (1.57)
(0.75)(0.41) (0.41)
22.2
(0.87)
105.0
105.0
89.0
8.0
(4.13)
(4.13)
(3.50)
(0.31)
4.5(0.18)0, C'BORE 10.0(0.39)0
3.2(0.13)DEEP
NOTE 2
SIDE MOUNTING DETAILFRONT
NOTES
1. DIMENSIONS SAME AS SE-TA6A.
2. MOUNTING SCREWS M4 OR 8-32.
3. TERMINAL SCREWS 6-32 x 0.25.
LR 53428
US
C
R
Revision:
SE-TA6A
TERMINATION ASSEMBLY Serial Number:
00 00000000
1-800-TEC-FUSE (1-800-832-3873)
Made in Saskatoon, Canada
Rating: 5.6 Vdc @ 105 mA
50 W Max
Use with: Ground-Fault Ground-Check
Monitor Models
SE-134 and SE-134C
R
8.0
(0.31)
LR 53428
USC
R
Revision:
SE-TA6A-WL
TERMINATION ASSEMBLY
Serial Number:
00 00000000
1-800-TEC-FUSE (1-800-832-3873)
Made in Saskatoon, Canada
Rating: 5.6 Vdc @ 105 mA
50 W Max
Use with: Ground-Fault Ground-Check
Monitor Models
SE-134 and SE-134C
R
GGC
YEL
GRN
NOTES
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. WIRE LEADS ARE 356(14) OF #14 AWG.
SE-TA6A-WL
SE-TA6A
G
GC
SE-TA6A
TERMINATION
ASSEMBLY
SE-TA6A-WL
TERMINATION
ASSEMBLY
FIGURE 5. SE-TA6A and SE-TA6A-WL Termination Assemblies.

Page 9
SE-134C Ground-Fault Ground-Check Monitor Rev. 3
Pub. SE-134C-M, December 16, 2009.
NOTE 2
12.7
(0.50)
19.0
(0.75)
58.8
(2.32)
GC
300 (12) OF
YELLOW WIRE
G
300 (12) OF
GREEN/YELLOW WIRE
NOTES
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. MOUNTING SCREWS M3.5 OR 6-32.
50.8
(2.00)
12.7
(0.50)
3.2
(0.13)
4.0
(0.16)
MOUNTING DETAIL
SIDE
TOP
LR 53428
USC
R
Rev:
SE-TA6ASF-WL
Serial Number:
00 00000000
Rating: 5.6 Vdc @ 105 mA 12 W Max
Use with: SE-134 and SE-134C
TERMINATION ASSY
SE-TA6ASF-WL
GC
G
R
1-800-TEC-FUSE (1-800-832-3873)
Made in Saskatoon, Canada
TERMINATION
ASSEMBLY
FIGURE 6. SE-TA6ASF-WL Small-Format Termination Assembly.
NOTES:
1. ONE RED AND ONE GREEN
LED LIGHT, 24-120 VAC/DC,
NOT POLARITY SENSITIVE.
2. YELLOW PUSH BUTTON
3 A @ 240 VAC - A600,
0.5 A @125 VDC - Q600.
3. DIMENSIONS IN MILLIMETRES
(INCHES).
4. INDICATES CLEARANCE
REQUIRED.
5. PANEL THICKNESS 1.0 TO 6.0
(0.04 TO 0.24).
6. NEMA 4X.
LEGEND PLATE
30.0
(1.18)
LEGEND
PLATE
22.2 (0.87) DIA
25.0
(0.98)
15.0
(0.59)
22.5
(0.89)
MOUNTING DETAIL
30.0 MINIMUM
(1.18)
40.0 MINIMUM
(1.57)
PILOT LIGHTS
36.6
(1.44)
17.3
(0.68)
29.9
(1.17)
43.5
(1.71)
PUSH BUTTON
36.6
(1.44)
14.9
(0.59)
29.9
(1.17)
43.5
(1.71)
X1
X2
FIGURE 7. RK-132 Remote Indication and Reset.

Page 10
SE-134C Ground-Fault Ground-Check Monitor Rev. 2
Pub. SE-134C-M, December 16, 2009.
FIGURE 8. PPI-600V Parallel-Path Isolator.

Page 11
SE-134C Ground-Fault Ground-Check Monitor Rev. 0
Pub. SE-134C-M, December 16, 2009.
NOTES:
1. THE PARALLEL-PATH ISOLATOR IS NOT POLARIZED. EITHER FLANGE CAN BE
CONNECTED TO CHASSIS.
2. THE OUTGOING GROUND MUST BE ISOLATED FROM THE CHASSIS GROUND BUS.
IF A FLANGE-MOUNTED RECEPTACLE IS USED, VERIFY THAT THE FLANGE IS ISOLATED
FROM THE GROUND PIN, AND
- USE A MATING PLUG WITH A NON-METALLIC HOUSING, OR
- ISOLATE THE FLANGE FROM THE CHASSIS IF THE MATING PLUG HAS A
METALLIC HOUSING.
3. CABLE PLUGS AND RECEPTACLES WITH GROUNDED METAL HOUSINGS MUST BE
ISOLATED FROM EARTH TO PREVENT PARALLEL GROUND PATHS.
OUTGOING
OUTGOING
GROUND CHECK
GROUND
GC
G
PPI-600VCHASSIS GROUND BUS
CABLE
GROUND
G
GROUND
CHECK
GC
GROUND CHECK MONITOR
SE-105, SE-107, SE-134C, OR SE-135
INCOMING
GROUND
FIGURE 9. PPI-600V Typical Installation.

Page 12
SE-134C Ground-Fault Ground-Check Monitor Rev. 1
Pub. SE-134C-M, December 16, 2009.
5. TECHNICAL SPECIFICATIONS
5.1 SE-134C
Supply:
Option 00...............................25 VA, 120-240 Vac
(+10, -45%), 50-400 Hz,
15 W, 110-250 Vdc
(+10, -25%)
Option 10 ........................... 15 W, 24-48 Vdc
(+50, -25%)
20 VA, 24-48 Vac
(+10, -55%), 50-100 Hz
Ground-Fault Circuit:
Digital Filter....................... 50 to 60 Hz, Bandpass
3 dB Frequency Response.. 30 to 90 Hz
Trip-Level Settings ............ 0.5, 0.75, 1.0, 1.5, 2.0,
2.5, 3.0,5.0, 7.5, 10.0,
and 12.5 A
Trip-Time Settings ............. 0.1, 0.2, 0.3, 0.4, 0.5, 0.7,
1.0, 1.3, 1.6, 2.0, and
2.5 s
Thermal Withstand............. 150 A Continuous
1,000 A for 2.5 s
(Ground-Fault Current)
Sensor Lead Resistance...... 2 Ωmaximum
Trip-Level Accuracy .......... ± 5% or 0.1 A
Trip-Time Accuracy........... +50, -15 ms
Sensor Verification ............ Enabled or Disabled
Operating Mode ................. Latching
Ground-Check Circuit:
Open-Circuit Voltage......... 24 Vdc
Output Impedance .............. 136 Ω
Loop Current...................... 105 mA
Induced ac Withstand......... 60 Vac Continuous,
120 Vac for 10 s,
250 Vac for 0.25 s
Pull-in Time ....................... ≤750 ms
Trip Resistance................... 28 Ω± 10%
Trip Time @ 50 Ω.............. 220 ± 30 ms
Isolation.............................. 3 kV, 60 Hz, 1 s
Test .................................... Front-Panel Switch and
Remote, N.O. Contact
Fuse Rating (F1)................. 1.5 A, 500 Vac,
TimeDelay
Fuse Part Number............... FNQ 1½ Buss Fusetron
Operating Mode ................. Latching or
Non-Latching
Trip Relay:
CSA/UL Contact Rating .... 8 A Resistive 250 Vac
5 A 30 Vdc,
¼ HP, B300 Pilot Duty
Supplemental Contact Ratings:
Make/Carry (0.2 s)...... 30 A
Break dc ...................... 75 W Resistive,
35 W Inductive (L/R < 0.04)
Break ac ...................... 2,000 VA Resistive,
1,500 VA Inductive
(PF > 0.4)
Subject to maximums of 8 A and 250 V (ac or dc)
Contact Configuration........ Isolated N.O. and N.C.
Contacts
Operating Mode ................. Fail-Safe or
Non-Fail-Safe
Remote-Indication Relays:
CSA/UL Contact Rating .... 8 A Resistive 250 Vac
8 A 30 Vdc
Supplemental Contact Ratings:
Make/Carry (0.2 s)...... 20 A
Break dc...................... 50 W Resistive,
25 W Inductive (L/R < 0.04)
Break ac ...................... 2,000 VA Resistive,
1,500 VA Inductive
(PF > 0.4)
Subject to maximums of 8 A and 250 V (ac or dc)
Contact Configuration........ N.O and N.C. (Form C)
Operating Mode ................. Fail-Safe
Terminal Block Rating.............. 10 A, 300 Vac,
12 AWG (2.5 mm2)
PWB Conformal Coating.......... MIL-1-46058 qualified,
UL QMJU2 recognized
Mounting Configuration ........... Panel Mount and
Surface Mount
Shipping Weight ....................... 2.3 kg (5.1 lb)
Environment:
Operating Temperature ...... -40°C to 60°C
Storage Temperature.......... -55°C to 80°C
Humidity ............................ 85% Non-Condensing
Surge Withstand........................ ANSI/IEEE 37.90.1-1989
(Oscillatory and Fast
Transient)
Certification .............................. CSA Canada and USA
LR 53428
USC
R
To:
CSA C22.2 No. 14 Industrial Control Equipment
UL 508 Industrial Control Equipment
UL 1053 Ground Fault Sensing and Relaying
Equipment
Australia

Page 13
SE-134C Ground-Fault Ground-Check Monitor Rev. 1
Pub. SE-134C-M, December 16, 2009.
5.2 CURRENT SENSORS
SE-CS10-2.5:
Current Ratio...................... 1,000:5 A
Insulation............................ 600-V Class
Window Diameter .............. 63 mm (2.5”)
Shipping Weight ................ 690 g (1.5 lb)
SE-CS10-4:
Current Ratio...................... 1,000:5 A
Insulation............................ 600-V Class
Window Diameter .............. 108 mm (4.2”)
Shipping Weight ................ 1.9 kg (4.3 lb)
SE-CS10-6:
Current Ratio...................... 1,000:5 A
Insulation............................ 600-V Class
Window Diameter .............. 160 mm (6.3”)
Shipping Weight ................ 2.2 kg (4.8 lb)
SE-CS10-8:
Current Ratio...................... 1,000:5 A
Insulation............................ 600-V Class
Window Diameter .............. 209 mm (8.2”)
Shipping Weight ................ 2.2 g (4.8 lb)
5.3 TERMINATION ASSEMBLIES
SE-TA6A:
Characteristic ..................... 5.6-V Zener, Temperature
Compensated
Power Rating...................... 50 W
Screw Terminal .................. 6-32 x 0.25
Dimensions......................... 105 x 40 x 41.5 mm
(4.13 x 1.57 x 1.63”)
Shipping Weight ................ 300 g (0.7 lb)
SE-TA6A-WL
Characteristic ..................... 5.6-V Zener, Temperature
Compensated
Power Rating...................... 50 W
Wire Leads ......................... 14 AWG, 356 mm (14”)
Dimensions......................... 105 x 40 x 22.2 mm
(4.13 x 1.57 x 0.87”)
Shipping Weight ................ 300 g (0.7 lb)
SE-TA6ASF-WL:
Characteristic ..................... 5.6-V Zener, Temperature
Compensated
Power Rating ..................... 12 W
Wire Leads......................... 18 AWG, 300 mm (11.8”)
Dimensions ........................ 58.8 x 19 x 12.7 mm
(2.32 x 0.75 x 0.5”)
Shipping Weight ................ 45 g (0.1 lb)
Certification .............................. CSA Canada and USA
LR 53428
USC
R
6. ORDERING INFORMATION
SE-134C-
Future Options
Power Supply:
0 Universal ac/dc Supply
1 24 to 48-Vdc Supply
SE-134C............................Ground-Fault Ground-Check
Monitor complete with
SE-134-SMA
Surface-Mount Adapter
Ground-Check Termination:
SE-TA6A ...................50-W Standard Termination
Assembly
SE-TA6A-WL............50-W Termination Assembly
with Wire Leads
SE-TA6ASF-WL .......12-W Small-Format Termination
Assembly with Wire Leads
Current Sensors:
SE-CS10-2.5 ..............Current Sensor,
63 mm (2.5”) Window
SE-CS10-4 .................Current Sensor,
108 mm (4.2”) Window
SE-CS10-6 .................Current Sensor,
160 mm (6.3”) Window
SE-CS10-8 .................Current Sensor,
209 mm (8.2”) Window
Parallel Path Isolator
PPI-600V ...................For system voltages up to
600 Vac
Accessories:
RK-132 ......................Remote Indication and Reset,
Includes two 120-V pilot
lights, a reset push button, and
legend plates

Page 14
SE-134C Ground-Fault Ground-Check Monitor Rev. 0
Pub. SE-134C-M, December 16, 2009.
7. WARRANTY
The SE-134C Ground-Fault Ground-Check Monitor 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-134C 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.
Littelfuse Startco is not liable for contingent or
consequential damages; for expenses sustained as a result
of incorrect application, incorrect adjustment, or a
malfunction; or for expenses resulting from the use of, or
inability to use, the product.
8. TEST PROCEDURES
8.1 GROUND-CHECK TRIP TESTS
8.1.1 LATCHING GROUND-CHECK TRIP TEST
• Connect the monitor, current sensor and termination
assembly as shown in Fig 10. Connect terminals 14 and
15 for latching operation. With supply voltage applied,
the POWER, SENSOR, and VALID LED’s will be on.
• Open the ground-check loop by removing either the GC
or G connection between the monitor and the termination
assembly. Pressing the faceplate GC TEST button will
also perform an open-ground-check test. The monitor
will trip. The trip contacts (terminals 22-23 and 24-25)
and the ground-check indication contacts (terminals 26-
27 and 26-28) will change state. The VALID LED will
be off, and both the GROUND CHECK TRIP and the
OPEN LED’s will be on.
• Reconnect the ground-check loop. The VALID and
TRIP LED’s will be on and the OPEN LED will be
flashing. The TRIP contacts (terminals 22-23 and 24-25)
will remain latched and ground-check indication contacts
(terminals 26-27 and 26-28) will change state.
• Reset the monitor.
• Short the ground-check loop by connecting G to GC.
The monitor will trip. The trip contacts (terminals 22-23
and 24-25) and the ground-check indication contacts
(terminals 26-27 and 26-28) will change state. The
VALID LED will be off, and both the GROUND CHECK
TRIP and the SHORT LED’s will be on.
• Remove the short from G to GC. The VALID and TRIP
LED’s will be on and the SHORT LED will be flashing.
The TRIP contacts (terminals 22-23 and 24-25) will
remain latched and ground-check indication contacts
(terminals 26-27 and 26-28) will change state.
• Reset the monitor.
8.1.2 NON-LATCHING GROUND-CHECK TRIP TEST
• Connect the monitor, current sensor and termination
device as shown in Fig. 10. With supply voltage applied,
the POWER, SENSOR, and VALID LED’s will be on.
• Open the ground-check loop by removing either the GC
or G connection between the monitor and the termination
assembly. Pressing the faceplate GC Test button will also
perform an open circuit test. The monitor will trip. The
trip contacts (terminals 22-23 and 24-25) and the ground-
check indication contacts (terminals 26-27 and 26-28)
will change state. The VALID LED will be off, and both
the GROUND CHECK TRIP and the OPEN LED’s will
be on.
• Reconnect the ground-check loop. The monitor will
reset.
• Short the ground-check loop by connecting G to GC.
The monitor will trip. The trip contacts (terminals 22-23
and 24-25) and the ground-check indication contacts
(terminals 26-27 and 26-28) will change state. The
VALID LED will be off, and both the GROUND
CHECK TRIP and the SHORT LED’s will be on.
• Remove the short from G to GC. The monitor will reset.
8.2. TRIP RELAY FAIL-SAFE MODE TEST
• Connect the monitor, current sensor and termination
device as shown in Fig. 10. With supply voltage applied,
the POWER, SENSOR, and VALID LED’s will be on.
The output contacts between terminals 22 and 23 will be
open and between 24 and 25 will be closed.
• Remove the supply voltage. The output contacts
between terminals 22 and 23 will close and the output
contacts between terminals 24 and 25 will open.
8.3 CURRENT-SENSOR-VERIFICATION TEST
• Connect the monitor, current sensor and termination
device as shown in Fig. 10. With supply voltage applied,
the POWER, SENSOR, and VALID LED’s will be on.
• Open the current-sensor circuit by disconnecting one of
the sensor leads. The monitor will trip. The trip contacts
(terminals 22-23 and 24-25) and the ground-fault
indication contacts (terminals 19-20 and 19-21) will
change state. The GROUND FAULT TRIP LED will be
on and the SENSOR LED will be off.
• Reconnect the current sensor. The GROUND FAULT
TRIP LED will stay on and the SENSOR LED will flash.
The output contacts will remain latched.
• Reset the monitor.
• Short the current sensor by connecting terminals 16 and
17. The monitor will trip. The trip contacts (terminals
22-23 and 24-25) and the ground-fault indication contacts
(terminals 19-20 and 19-21) will change state. The
GROUND FAULT TRIP LED will be on and the
SENSOR LED will be off.

Page 15
SE-134C Ground-Fault Ground-Check Monitor Rev. 0
Pub. SE-134C-M, December 16, 2009.
• Remove the short from terminals 16 and 17. The
GROUND FAULT TRIP LED will stay on and the
SENSOR LED will flash. The output contacts will remain
latched.
• Reset the monitor.
8.4 SE-TA6A-SERIES TERMINATION ASSEMBLY TESTS
• Apply 15 Vdc across the series combination of a 100-Ω,
5-W current-limiting resistor and the termination
assembly, as shown in Fig. 11. In the reverse biased test,
the voltage should be 5.6 V across the termination
assembly terminals. In the forward biased test, the
voltage across the termination assembly terminals should
be between 0.3 and 0.9 V.
8.5 GROUND-FAULT PERFORMANCE TEST
To meet the requirements of the National Electrical
Code (NEC), as applicable, the overall ground-fault
protection system requires a performance test when first
installed. A written record of the performance test is to
be retained by those in charge of the electrical installation
in order to make it available to the authority having
jurisdiction. A test-record form is provided for recording
the date and the final results of the performance tests.
The following ground-fault system tests are to be
conducted by qualified personnel:
a) Evaluate the interconnected system in accordance with
the overall equipment manufacturer’s detailed
instructions.
b) Verify proper location of the ground-fault current
transformer. Ensure the cables pass through the ground-
fault-current-transformer window. This check can be
done visually with knowledge of the circuit. The
connection of the current-transformer secondary to the
SE-134C is not polarity sensitive.
c) Verify that the system is correctly grounded and that
alternate ground paths do not exist that bypass the current
transformer. High-voltage testers and resistance bridges
can be used to determine the existence of alternate ground
paths.
d) Verify proper reaction of the circuit-interrupting device
in response to a simulated or controlled ground-fault
current. To simulate ground-fault current, use
CT-primary current injection. Fig. 10 shows a test circuit
using Littelfuse Startco Ground-Fault-Relay Test Units.
The SE-400 has a programmable output of 0.5 to 9.9 A
for a duration of 0.1 to 9.9 seconds. Set the test current to
120% of GF TRIP LEVEL. The SE-100T provides a test
current of 0.65 or 2.75 A for testing 0.5- and 2.0-A trip
levels. Inject the test current through the current-
transformer window for at least 2.5 seconds. Verify that
the circuit under test has reacted properly. Correct any
problems and re-test until the proper reaction is verified.
e) Record the date and the results of the test on the
attached test-record form.
TABLE 1. GROUND-FAULT-TEST RECORD
DATE TEST RESULTS
Retain this record for the authority having jurisdiction.

Page 16
SE-134C Ground-Fault Ground-Check Monitor Rev. 0
Pub. SE-134C-M, December 16, 2009.
SE-134C
G
GC
SE-TA6A-SERIES
TERMINATION
ASSEMBLY
26
19
22
24 25
23
20
21
27
28
TRIP A
TRIP B
GF
GF
GC
GC
NOTE 6
OHMS
CURRENT
SENSOR
DISABLE
SENSOR
VERIFICATION
17
16
18
SUPPLY
VOLTAGE
L
N
NOTE 1 NOTE 5
RESET
L1
L2/N
NOTE 2
NOTE 3
SUPPLY
VOLTAGE
L
N
NFS
GC
TEST
NOTE 4 GROUND-
CHECK
LATCH
3
4
SPG
5
6
7
8
GROUND
CHECK
CABLE
GROUND
NOTE 7
1
2
9
10
11
12
13
14
15
OUTPUT
SE-CS10
CURRENT
SENSOR
GROUND-FAULT RELAY
TEST UNIT
(SE-100T or SE-400)
NOTES:
1. MOMENTARILY CONNECT 9 & 10 TO
PERFORM REMOTE RESET.
2. MOMENTARILY CONNECT 11 & 12 TO
PERFORM REMOTE GROUND-CHECK
TEST.
3. CONNECT 12 & 13 FOR NON-FAIL-SAFE
OPERATION OF THE TRIP RELAY.
4. CONNECT 14 & 15 FOR LATCHING
GROUND-CHECK TRIP.
5. CONNECT 17 & 18 TO DISABLE CURRENT-
SENSOR VERIFICATION.
6. CONTACTS SHOWN DE-ENERGIZED.
7. REMOVE TERMINAL 3 CONNECTION
WHEN PERFORMING DIELECTRIC TESTS.
FIGURE 10. Ground-Fault-Test Circuit.
REVERSE-BIASED TEST FORWARD-BIASED TEST
100 5 WW,
-
+
15 Vdc
VOLTS
+
-
15 Vdc
G
GC
SE-TA6A-SERIES
TERMINATION
ASSEMBLY
G
GC
SE-TA6A-SERIES
TERMINATION
ASSEMBLY
VOLTS
100 5 WW,
FIGURE 11. Termination-Assembly-Test Circuits.