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TS 870 9087A 198
th
Street, Langley, BC Canada V1M 3B1 Telephone (604) 888-0110
Telefax (604) 888-3381 E-Mail: info@thomsontechnology.com www.thomsontechnology.com









TS 870


AUTOMATIC TRANSFER SWITCHES




INSTALLATION, OPERATING &
SERVICE MANUAL




PM062 Rev 6 08/08/01
TS 870 TRANSFER SWITCH

PM062 REV 6 08/08/01

Thomson Technology
TABLE OF CONTENTS

1.
PRODUCT REVISION HISTORY
1

2.
EQUIPMENT STORAGE
1

2.1.

ENVIRONMENTAL CONDITIONS
1

3.
NOTES TO INSTALLER
2

3.1.

UPSTREAM CIRCUIT PROTECTIVE DEVICES/ELECTRICAL CONNECTIONS
2

3.2.

TRANSFER SWITCHES WITH INTEGRAL OVER CURRENT PROTECTION
3

3.3.

TRANSFER SWITCHES WITH MULTI-TAP VOLTAGE CAPABILITY
3

3.4.

SYSTEM PHASING-HIGH LEG DELTA SYSTEMS
4

3.5.

REMOTE START CONTACT FIELD WIRING
5

3.6.

DIELECTRIC TESTING
5

3.7.

INSTALLATION OF OPEN TYPE TRANSFER SWITCHES
5

4.
GENERAL DESCRIPTION
5

4.1.

PRODUCT MODEL CODE
7

4.2.

TYPICAL COMMISSIONING PROCEDURES
8

5.
GENERAL THEORY OF OPERATION
8

5.1.

STANDARD AUTOMATIC TRANSFER SWITCH
8

5.2.

SERVICE ENTRANCE AUTOMATIC TRANSFER SWITCH
9

5.3.

TEST MODES
13

6.
OVER CURRENT PROTECTION
13

6.1.

STANDARD TS 870 AUTOMATIC TRANSFER SWITCH
13

6.2.

OPTIONAL TS 870 AUTOMATIC TRANSFER SWITCH WITH INTEGRAL OVER
CURRENT PROTECTION
14

7.
GENERAL NOTES ON SERVICING TRANSFER SWITCH MECHANISM
15

8.
TRANSFER SWITCH MECHANISM 100A-800A, S STYLE
17

8.1.

MANUAL OPERATION
17
TS 870 TRANSFER SWITCH

PM062 REV 6 08/08/01

Thomson Technology
9.
TRANSFER SWITCH MECHANISM 1000A-1200A, T-STYLE
19

9.1.

MANUAL OPERATION
19

10.
RECOMMENDED MAINTENANCE
21

11.
FRONT VIEW (TYPICAL) 3 / 4 POLE 100A-250A S-STYLE TRANSFER
MECHANISM
23

12.
FRONT VIEW (TYPICAL) 3 POLE 400A-800A S-STYLE TRANSFER MECHANISM
(MECHANISM FRONT COVER REMOVED)
24

13.
FRONT VIEW (TYPICAL) 3 / 4 POLE 1000A-1200A T-STYLE TRANSFER
MECHANISM
25

14.
CONNECTION CONFIGURATION OPTIONS
26

15.
CABLE TERMINAL INFORMATION
27

16.
REQUIREMENTS FOR UPSTREAM CIRCUIT PROTECTIVE DEVICES
27

16.1.

WITHSTAND CURRENT RATINGS (
ALL MODELS WITHOUT INTEGRAL
OVERCURRENT PROTECTION OPTION)

27

16.2.

INTERRUPTING CAPACITY CURRENT RATINGS
(ALL MODELS WITH INTEGRAL
OVERCURRENT PROTECTION OPTION)

28

17.
GROUND FAULT SITE TEST REQUIREMENTS
28

17.1.

PERFORMANCE TEST
28

18.
TROUBLESHOOTING
30

19.
REPLACEMENT PARTS
32

20.
PRODUCT RETURN POLICY
33

21.
NOTES
34

22.
PERFORMANCE TEST FORM
35

TS 870 TRANSFER SWITCH

PM062 REV 6 08/08/01
1
Thomson Technology
1.
PRODUCT REVISION HISTORY
The following information provides an historical summary of changes made to this product since the
original release.

Operating & Service Manual Version
Rev 0 04/11/19
Original release.
Rev 1 05/03/08
Changes to incorporate reversing style ATS Motor for 100-250A
transfer switches.
Rev 2 05/05/26
Revisions to
Section 8
and
Section 18
.
Rev 3 06/05/08
Revisions to
Section 15
.
Rev 4 07/07/31
Changes to Incorporate new S-Style 400A mechanism
Rev 5 08/03/05
Changes to Incorporate new S-Style mechanism (100A, 150A,
200A, 250A, 600A, 800A)
Rev 6 08/08/01
Changes to Incorporate optional TSC 80E Transfer Controller

Contact Thomson Technology, to obtain applicable instruction manuals or if in doubt about
any matter relating to installation, operation or maintenance. Soft copy of the most current
version is available at
www.thomsontechnology.com
.
NOTE: All information contained in this manual is for reference only and is subject
to change without notice.
2.
EQUIPMENT STORAGE
The following procedures are required for correct storage of the transfer switch prior to installation.
2.1.
ENVIRONMENTAL CONDITIONS

CAUTION!!!
Failure to store and operate equipment under the specified environmental conditions may
cause equipment damage and void warranty.
2.1.1.
EQUIPMENT STORAGE
The transfer switch shall be stored in an environment with a temperature range not
exceeding -4° to +158° Fahrenheit (-20° to +70° Celsius) and a humidity range not
exceeding 5%-95% non-condensing. Before storing, unpack sufficiently to check for
concealed damage. If concealed damage is found, notify the ATS supplier and the
Carrier immediately. Repack with the original, or equivalent packing materials. TS 870 TRANSFER SWITCH

PM062 REV 6 08/08/01
2
Thomson Technology
Protect from physical damage. Do not stack. Store indoors in a clean, dry, well
ventilated area free of corrosive agents including fumes, salt and concrete/cement
dust. Apply heat as necessary to prevent condensation.
2.1.2.
EQUIPMENT OPERATING
The transfer switch shall be operated in an environment with a temperature range not
exceeding +5° to +122° Fahrenheit (-15° to +50° Celsius) and a humidity range not
exceeding 5%-95% non-condensing.
3.
NOTES TO INSTALLER

DANGER!!!!
Arc Flash and Shock Hazard. Will cause severe injury or death.

Do not open equipment until ALL power sources are disconnected

This equipment must be installed and serviced only by qualified electrical
personnel utilizing safe work practices and appropriate Personal Protective
Equipment (PPE). Failure to do so may cause personal injury or death


3.1.
UPSTREAM CIRCUIT PROTECTIVE DEVICES/ELECTRICAL
CONNECTIONS
To ensure satisfactory installation of this equipment be sure to observe "Cable Terminal
Information regarding power cable connection tightness and "Requirements for Upstream
Circuit Protective Devices" located in this manual.

All mechanical and electrical connections must be checked for tightness prior to placing this
equipment in service to ensure proper operation and to validate applicable warranty
coverage. TS 870 TRANSFER SWITCH

PM062 REV 6 08/08/01
3
Thomson Technology

3.2.
TRANSFER SWITCHES WITH INTEGRAL OVER CURRENT PROTECTION
For models of transfer switch with integral over current protection, the over current protection
must be set prior to operation. The equipment will be shipped from the factory with a long-
time current setting of 100% (of the equipment rating) and maximum short-
time/instantaneous current and time delay settings.
WARNING!
Do Not Energize this equipment until
device settings have been verified to
ensure proper system protection &
coordination. Failure to do so may
result in equipment failure.

Refer to Section 5.2.2 of this manual for additional information on operation of the Transfer
switch following an over current trip condition.

Refer to information supplied with the transfer switch documentation package for adjustment
procedures on the power switching units over current protection trip unit. Contact the factory
if any additional information is required.
3.3.
TRANSFER SWITCHES WITH MULTI-TAP VOLTAGE CAPABILITY
If the transfer switch has programmable multi-tap voltage capability (i.e. ATS Model Code
with Voltage Code Y), confirm the transfer switch has been configured for the correct
system voltage prior to installation.
WARNING!

Failure to confirm and match transfer
switch voltage with the system voltage
could cause serious equipment damage.
The voltage selections and connections are shown on the engineered drawings attached to
each transfer switch. The factory default settings will be indicated on the calibration label
attached on the inside of the enclosure door (supplied loose on open style models). A blank
label is included to record the applicable settings if the configuration is changed from the
factory default settings. TS 870 TRANSFER SWITCH

PM062 REV 6 08/08/01
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Thomson Technology
To change the transfer switch voltage, refer to
INSTRUCTIONS TO CHANGE SYSTEM
VOLTAGE ON TS870 SERIES TRANSFER SWITCHES WITH TSC 80/TSC 80E
CONTROLLER
(attached as
Appendix B). Contact Thomson Technology for further
information as may be required.

3.4.
SYSTEM PHASING-HIGH LEG DELTA SYSTEMS
For systems using high leg delta 240V 3 phase 4 wire systems, connection of supply
conductors must have the correct phasing as shown below.

WARNING
Failure to match correct system
phasing will result in serious damage
to the TSC 80/TSC 80E controller.

208V
B
(Orange)
(High Leg)
C
(Yellow)
A
(Red)
N
(W hite)
PH A
(UA)
Autom atic Transfer
Switch (Utility Supply)
PH B
(UB)
PH C
(UC)
Neural
(N)
120V
120V
240V
240V


Where transfer switches are supplied without power isolation transformers (PT1 &
PT2) for ATS control logic it is essential that the orientation of phase conductors of TS 870 TR