Startco SE-105 User manual
SE-105 MANUAL
GROUND-FAULT GROUND-CHECK MONITOR
NOVEMBER 24, 2005
REVISION 9
RESETGROUND
FAULT
GF TRIP
TIME (s)
POWER
GROUND
CHECK
CT1
CT2
AB
GICISW
L1
GC
L2
F1
F2
G
MODE
GF
0.1 2.0
1.0
4.0 A
2.0 A
0.5 A
SH
UV
STARTCO
ENGINEERING LTD.
GF-GC MONITOR
SE-105
Copyright 2005 by Startco Engineering Ltd.
All rights reserved.
Publication: SE-105-M
Document: S95-C105-00000
Printed in Canada.
Startco Engineering Ltd. Page i
SE-105 Ground-Fault Ground-Check Monitor Rev. 9
Pub. SE-105-M, November 24, 2005.
TABLE OF CONTENTS
PAGE
Table of Contents .............................................................. i
List of Figures ................................................................... i
List of Tables..................................................................... i
1. General ................................................................... 1
2. Operation................................................................ 1
2.1 Settings .................................................................... 1
2.1.1 GF Trip Time.............................................. 1
2.1.2 GF ............................................................... 1
2.1.3 Mode........................................................... 1
2.2 Indication and Reset ................................................ 1
2.3 Fusing...................................................................... 1
3. Installation.............................................................. 1
3.1 SE-105..................................................................... 1
3.2 Ground-Fault CT ..................................................... 4
3.3 Ground-Check Termination..................................... 4
3.4 Remote Operation.................................................... 4
3.5 Parallel-Path Isolation.............................................. 4
3.6 Ground-Fault Testing .............................................. 4
4. Compatibility ......................................................... 4
5. Technical Specifications ...................................... 11
6. Ordering Information ......................................... 12
7. Warranty .............................................................. 12
8. Ground-Fault Performance Test........................ 13
LIST OF FIGURES
FIGURE PAGE
1 Typical Application .................................................2
2 SE-105 Outline and Mounting Details..................... 3
3 Current Transformers............................................... 5
4 Zener-Diode Termination Devices...........................6
5 SE-TA6 Termination Assembly............................... 6
6 RK-102 Remote Indication and Reset .....................7
7 RK-105 Remote Indication-and-Reset Assembly....7
8 RK-105I Remote Indication Assembly....................8
9 RK-13 Relay Interface Module................................ 8
10 PPI-600V Parallel-Path Isolator............................... 9
11 PPI-600V Typical Installation ............................... 10
12 Ground-Fault-Test Circuits.................................... 13
LIST OF TABLES
TABLE PAGE
1 Terminal Designations ............................................. 4
2 Ground-Fault-Test Record ..................................... 13
DISCLAIMER
Specifications are subject to change without notice.
Startco Engineering Ltd. is not liable for contingent or
consequential damages, or for expenses sustained as a
result of incorrect application, incorrect adjustment, or a
malfunction.
Startco Engineering Ltd. Page 1
SE-105 Ground-Fault Ground-Check Monitor Rev. 9
Pub. SE-105-M, November 24, 2005.
1. GENERAL
The SE-105 is a combination ground-fault and ground-
check monitor for resistance-grounded systems in non-
hazardous applications. The ground-fault circuit is
latching and the ground-check circuit is typically non-
latching. One output contact is provided for contactor
control, or for shunt or undervoltage operation in a
breaker trip circuit.
Ground-fault current is sensed by a CT200-series
window-type current transformer. A trip level of 0.5, 2.0,
or 4.0 A is switch selectable for use with a 5-, 15-, or
25-A grounding resistor. Trip time is adjustable from 0.1
to 2.0 seconds.
The fail-safe ground-check circuit is validated by an
end-of-line termination with a 5.6-volt Zener
characteristic. The Zener characteristic clamps induced
voltage and allows induced current to flow in the ground-
check loop. Consequently, induced-ac-withstand
capability, noise immunity, and open/short detection are
independent of current in the phase conductors.
CAUTION: The SE-105 is not a lock-out device. Follow
lock-out procedures for maintenance.
2. OPERATION
2.1 SETTINGS
2.1.1 GF TRIP TIME
Ground-fault trip time is adjustable from 0.1 to
2.0 seconds. Time-coordinated ground-fault protection
requires this setting to be longer than the trip time of
downstream ground-fault devices.
2.1.2 GF
The ground-fault-circuit trip level is 0.5, 2.0, or 4.0 A
when current is sensed with a CT200-series current
transformer. Since the ground-fault-circuit trip level
should not be greater than 20% of the grounding resistor
let-through current, these levels are appropriate for use
with 5-, 15-, or 25-A grounding resistors. For other
applications, the trip level of the ground-fault circuit is
0.25, 1.0, or 2.0% of the primary rating of the
5-A-secondary current transformer.
2.1.3 MODE
In the shunt-trip mode (SH), the output relay energizes
and its contact closes if the ground-check loop becomes
invalid or if a ground-fault trip occurs. The shunt-trip
mode is not fail-safe and is not recommended because:
— Shunt-trip devices do not operate if supply voltage
fails.
— Shunt-trip ground-check circuits allow open cable
couplers to be energized for a short interval after
supply voltage is applied.
In the undervoltage mode (UV), the output relay is
energized and its contact is closed when the ground-check
loop is valid and the ground-fault circuit is not tripped.
The undervoltage mode is referred to as fail-safe and is
recommended because:
— Undervoltage devices release if supply voltage fails.
— Undervoltage ground-check circuits do not allow
cable couplers to be energized until the ground-
check loop is verified.
2.2 INDICATION AND RESET
The green POWER LED indicates that the internal
power supply is on. The red GROUND-FAULT LED
indicates a ground-fault trip and the green GROUND-
CHECK LED indicates a valid ground-check loop. When
a ground-fault trip occurs, the SE-105 remains latched
until the reset switch is pressed or the supply voltage is
cycled. The ground-check circuit is non-latching and
does not require a reset. Terminals are provided for
remote indication and reset as shown in Fig. 1.
For the latching ground-check option, the GROUND-
CHECK LED is red and it indicates a latched ground-
check trip.
2.3 FUSING
The output contact is protected by fuse F1 (4.0 A, time
delay). The ground-check circuit is protected by fuse F2
(0.5 A, time delay).
3. INSTALLATION
3.1 SE-105
SE-105 outline and mounting details are shown in
Fig. 2. Typical connections are shown in Fig. 1. Connect
supply voltage to L1 and L2. For a 120-Vac supply,
connect supply neutral to L2. For a direct-current supply,
connect supply negative to L2. Connect chassis-bonding
terminal to ground.
Connect contact terminals A and B as required.
Face-plate LED's are driven in series with remote-
indication LED's. When a remote kit is not used,
terminals CI, +, and GI must be connected for the face-
plate LED’s to operate. These jumpers are installed at the
factory.
Connect terminal GC to the outgoing ground-check
conductor and connect terminal G to ground. To meet
electrical code requirements, do not jumper chassis-
bonding terminal to terminal G.
Install the upper terminal-block cover to prevent
inadvertent contact with line terminals.
Startco Engineering Ltd. Page 2
SE-105 Ground-Fault Ground-Check Monitor Rev. 9
Pub. SE-105-M, November 24, 2005.
F1
F2
CT200
GROUND
GROUND CHECK
UV
120 VAC
GROUND-CHECK
TERMINATION
5.6-V
ZENER
DIODE
5.6-V
ZENER
DIODE
STOP
HOLD-IN
CONTACT
START
USE LOW-
LEVEL
CONTACTS
ALTERNATE TERMINATION CIRCUIT
FOR REMOTE CONTACTOR CONTROL
LOAD
GROUND-FAULT
INDICATOR
GROUND-CHECK
INDICATOR
RESET SWITCH
RED
GREEN
REMOTE INDICATION AND RESET
LN GC
G
GC
G
R
S
1
R
S
2
C
G
I
G
R
I
+
S
WK1 K2
SW CI/GI + GI/RI
TB1
F2
R
S
1
R
S
2
C
G
I
G
R
I
+
S
WK1 K2
SW CI/GI + GI/RI
TB1
F2
GROUND-FAULT
INDICATOR
GROUND-CHECK
INDICATOR
RESET SWITCH
RED
GREEN
RK-13 CONNECTION WITH REMOTE INDICATION AND RESET
ALTERNATE
RESET CIRCUIT
24-120 Vac/Vdc
K1 CLOSES ON GROUND-CHECK VALID,
DO NOT USE K1 IN A TRIP CIRCUIT.
K2 CLOSES ON GROUND-FAULT TRIP.
K1 K2
RK-13 CONNECTION WITHOUT REMOTE INDICATION OR RESET
F2
K1 K2
RESETGROUND
FAULT
GF TRIP
TIME (s)
POWER
GROUND
CHECK
CT1
CT2
AB
GICISW
L1
GC
L2
G
MODE
GF
0.1 2.0
1.0
4.0 A
2.0 A
0.5 A
SH
UV
STARTCO
ENGINEERING LTD.
GF-GC MONITOR
SE-105
GICISW GC G
STARTCO
ENGINEERING LTD.
GF-GC MONITOR
SE-105
GICISW GC G
STARTCO
ENGINEERING LTD.
GF-GC MONITOR
SE-105
GICISW GC G
STARTCO
ENGINEERING LTD.
GF-GC MONITOR
SE-105
GI
+
CI
SW
GI
+
CI
SW
FIGURE 1. Typical Application.
Startco Engineering Ltd. Page 3
SE-105 Ground-Fault Ground-Check Monitor Rev. 9
Pub. SE-105-M, November 24, 2005.
F1
F2
109.0
(4.29)
88.9
(3.50)
139.7
(5.50)
150.0
(5.90)
4.8 (0.19) DIA
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. TERMINAL-BLOCK SCREWS: 6-32 x 0.25.
3. MOUNTING SCREWS: M4 OR 8-32.
4. SHOWN WITH TERMINAL-BLOCK COVER REMOVED.
5. MINIMUM CLEARANCE FOR FUSE REMOVAL.
100.0
(3.93)
77.8
(3.06)
RESETGROUND
FAULT
GF TRIP
TIME (s)
POWER
GROUND
CHECK
CT1
CT2
AB
GICISW
L1
GC
L2
G
MODE
GF
0.1 2.0
1.0
4.0 A
2.0 A
0.5 A
SH
UV
STARTCO
ENGINEERING LTD.
GF-GC MONITOR
SE-105
43.5
(1.71)
43.5
(1.71)
NOTE 5
NOTE 5
NOTE 4
FIGURE 2. SE-105 Outline and Mounting Details.
Startco Engineering Ltd. Page 4
SE-105 Ground-Fault Ground-Check Monitor Rev. 9
Pub. SE-105-M, November 24, 2005.
3.2 GROUND-FAULT CT
Outline and mounting details for CT200 and CT200L
current transformers are shown in Fig. 3. Pass the phase
conductors through the CT window as shown in Fig. 1.
Do not pass the ground or ground-check conductors
through the CT. In applications that require shields or
drain wires to pass through the CT, return them through
the CT before connecting them to ground.
Connect the secondary of the ground-fault CT to
SE-105 terminals CT1 and CT2. The CT connection to
the SE-105 is not polarity sensitive. Ground one side of
the CT secondary.
3.3 GROUND-CHECK TERMINATION
Install the ground-check termination at the load to
complete the ground-check loop as shown in Fig. 1.
Termination outlines and mounting details are shown in
Figs. 4 and 5. Connect terminal G of the termination to
the equipment frame so that the ground-conductor-to-
equipment-frame connection will be included in the
monitored ground-check loop. Connect terminal GC of
the termination to the incoming ground-check conductor.
If ground-check interlocks are used, low-level
(bifurcated, precious-metal, or sealed-reed) contacts are
recommended.
If used as a ground-fault monitor only, install the
termination at the SE-105.
3.4 REMOTE OPERATION
Terminals SW, CI, +, and GI are provided for remote
LED indication and remote reset as shown in Fig. 1.
Remote LED's are driven in series with the front-panel
LED's.
Remove factory-installed jumpers from terminals CI, +,
and GI, and connect a remote kit as shown in Fig. 1.
Optional remote kits are shown in Figs. 6, 7, and 8.
Standard LED indicator lamps are not compatible with
the SE-105.
For general-purpose applications, use the RK-105
Remote Indication-and-Reset Assembly or the RK-105I
Remote Indication Assembly. Connect terminals SW, CI,
+, and GI to remote-kit terminals SW, CI/RI, +, and GI.
For 22-mm-component RK-102 applications, connect
terminal X2 of the green ground-check indicator to CI,
terminal X2 of the red ground-fault indicator to GI, and
connect indicator X1 terminals to +. For remote reset,
connect the normally open push-button switch across
terminals + and SW.
If indication is required from a separate voltage source,
or if separate ground-fault and ground-check contacts are
required, use an RK-13 Relay Interface Module. The
RK-13 mounts on the SE-105 lower terminal block and is
compatible with the RK-102, RK-105 and RK-105I. See
Figs. 1 and 9. Contact K1 closes when the GC LED is on
and contact K2 closes when the GF LED is on.
3.5 PARALLEL-PATH ISOLATION
A PPI-600V can be used for parallel-path rejection. A
PPI-600V will also eliminate intermachine arcing and
prevent stray ac and dc currents from flowing in the
monitored ground wire. See Figs. 10 and 11. See
Technical Information 9.6 “Parallel Path Isolator” at
www.startco.ca, or contact Startco for application details.
3.6 GROUND-FAULT TESTING
Use CT-primary current injection to test the ground-
fault circuit. Fig. 12 shows test circuits using the Startco
SE-400 Ground-Fault-Relay Test Unit and the SE-100T
Ground-Fault-Relay Tester. The SE-400 has a
programmable output of 0.5 to 9.9 A for a duration of
0.1 to 9.9 seconds. The SE-100T has LO and HI outputs
for 5- and 15-A resistance-grounded systems.
A test-record form is provided in Section 8 of this
manual. Record the test results and test dates on this form
to meet the requirements of the National Electrical Code
(NEC). Retain the form so that the test data can be made
available to the authority having jurisdiction.
4. COMPATIBILITY
The SE-105 is a direct replacement for the SEL-100,
SEL-100TD, SE-101, SE-101S, SE-102, SE-102S,
SE-102M, SE-103, and SE-103S. Terminal designations
have been changed as shown in Table 1.
Terminals CT1 and CT2 are transformer isolated so
that the CT secondary can be grounded. Units with old
designations do not allow the secondary of the ground-
fault CT to be grounded when the ground-check circuit is
used.
TABLE 1. TERMINAL DESIGNATIONS
OLD
DESIGNATION
SE-105
DESIGNATION
CT
CT
(RELAY)
(RELAY)
L
N
SW
PL
+
GL
P
G
CT1
CT2
A
B
L1
L2
SW
CI
+
GI
GC
G
Startco Engineering Ltd. Page 5
SE-105 Ground-Fault Ground-Check Monitor Rev. 8
Pub. SE-105-M, November 24, 2005.
D
A
E
B
FRONT
9.4
(0.37)
F
BOTTOM
B
C
TAP M4 OR 8-32
22.2
(0.87)
44.5
(1.75)
MOUNTING DETAIL
SIDE
WHITE
BLACK
X1 X2
44.5 MAX
(1.75)
NOTES:
1. DIMENSIONS IN
MILLIMETRES (INCHES).
2. MOUNTING SCREWS:
M4 OR 8-32.
PART
NUMBER
CT200
CT200L
ABCD EF
55.9 (2.20)
88.9 (3.50)
120.7 (4.75)
154.0 (6.06)
101.6 (4.00)
133.4 (5.25)
98.3 (3.87)
139.7 (5.50)
108.0 (4.25)
144.5 (5.69)
5.6 (0.22)
7.1 (0.28)
DIMENSIONS
FIGURE 3. Current Transformers.
Startco Engineering Ltd. Page 6
SE-105 Ground-Fault Ground-Check Monitor Rev. 9
Pub. SE-105-M, November 24, 2005.
0.25" - 28 UNF
11.4
(0.45)
33.0
(1.30)
GC
G
1N4553B
GGC
69.9
(2.75)
1N5339B
NOTES:
1. DIMENSIONS IN MILLIMETRES
(INCHES).
2. MAY BE IMMERSED IN GLYCOL.
G
FIGURE 4. Zener-Diode Termination Devices.
40.0
(1.57)
19.0
(0.75)
10.5
(0.41)
8.0
(0.31)
51.0
(2.01)
67.0
(2.64)
TAP M4
OR 8-32
MOUNTING DETAIL
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. TERMINAL-BLOCK SCREWS: 6-32 x 0.25.
3. MOUNTING SCREWS: M4 OR 8-32.
4. ENCLOSURE IS ELECTRICALLY CONNECTED
TO TERMINAL G.
5. MAY BE IMMERSED IN GLYCOL.
4.5 (0.18) Ø, C'BORE 10.0 (0.39) Ø
3.2 (0.13) DEEP
67.0
(2.64)
40.0
(1.57)
GC
G
TERMINATION
ASSEMBLY
FRONT
MADE IN SASKATOON, CANADA
STARTCO
ENGINEERING LTD.
SE-TA6
22.2
(0.87)
41.5
(1.63)
SIDE
FIGURE 5. SE-TA6 Termination Assembly.
Startco Engineering Ltd. Page 7
SE-105 Ground-Fault Ground-Check Monitor Rev. 9
Pub. SE-105-M, November 24, 2005.
NOTES:
1. DIMENSIONS IN MILLIMETRES
(INCHES).
2. INDICATES CLEARANCE
REQUIRED.
3. PANEL THICKNESS 1.0 TO 6.0
(0.04 TO 0.24).
4. 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)
LED 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)
FIGURE 6. RK-102 Remote Indication and Reset.
FRONT VIEW
GROUND CHECKGROUND CHECK
GROUND FAULTGROUND FAULT
RESET
STARTCO
ENGINEERING LTD.
RK-105
60.0
(2.36)
44.5
(1.75)
(0.30)
(0.40)
7.7
10.0
96.0
(3.78)
76.0
(3.00)
(0.875)
22.25
28.58
(1.125)
1.25"
CONDUIT
KNOCKOUT
1.70" DIA
3.8 (0.15)
DIA
MOUNTING DETAIL
SIDE VIEW
30.0
(1.18)
25.0
(0.98)
CI/RI
+
GI
SW
OUTLINE
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. NEMA 1.
FIGURE 7. RK-105 Remote Indication-and-Reset Assembly.
Startco Engineering Ltd. Page 8
SE-105 Ground-Fault Ground-Check Monitor Rev. 9
Pub. SE-105-M, November 24, 2005.
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. NEMA 1.
FRONT VIEW
GROUND CHECKGROUND CHECK
GROUND FAULTGROUND FAULT
STARTCO
ENGINEERING LTD.
RK-105I
60.0
(2.36)
44.5
(1.75)
(0.30)
(0.40)
7.7
10.0
96.0
(3.78)
76.0
(3.00)
(0.875)
22.25
28.58
(1.125)
1.25"
CONDUIT
KNOCKOUT
1.70" DIA
3.8 (0.15)
DIA
MOUNTING DETAIL
SIDE VIEW
30.0
(1.18)
25.0
(0.98)
CI/RI
+
GI
OUTLINE
FIGURE 8. RK-105I Remote Indication Assembly.
60.2
31.0
47.5
21.0
(2.37)
(1.22)
(1.87)
(0.83)
R
S
1
R
S
2
C
G
I
G
R
I
+
S
WK1 K2
R
S
1
R
S
2
C
G
I
G
R
I
+
S
WK1 K2
SW CI/GI
+
GI/RI
TB1
INSTALLATION INSTRUCTIONS:
1. REMOVE FOUR LEFTMOST LOWER TERMINAL BLOCK SCREWS.
2. PLACE RK-13 ON TERMINAL BLOCK AND REPLACE SCREWS.
3. MAKE REQUIRED CONNECTIONS TO TERMINAL BLOCK TB1.
SIDE VIEW
RK-13 SHOWN MOUNTED ON SE-105
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
FIGURE 9. RK-13 Relay Interface Module.
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