THOMSON TS 880 User manual

9087A –198th Street, Langley, BC Canada V1M 3B1 ŸTelephone [phone]
Telefax [phone] ŸE-Mail: [email protected] Ÿwww.thomsontechnology.com
TS 880
AUTOMATIC TRANSFER SWITCHES
INSTALLATION, OPERATING &
SERVICE MANUAL
PM064 REV 8 10/01/25

TS 880 TRANSFER SWITCH
PM064 REV 8 10/01/25 Thomson Technology
TABLE OF CONTENTS
1. PRODUCT REVISION HISTORY 1
2. EQUIPMENT STORAGE 1
2.1. ENVIRONMENTAL CONDITIONS 1
2.1.1. EQUIPMENT STORAGE 2
2.1.2. EQUIPMENT OPERATING 2
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 WIRING5
3.6. DIELECTRIC TESTING 6
3.7. MOUNTING OF ENCLOSED TRANSFER SWITCHES 6
4. GENERAL DESCRIPTION 9
4.1. PRODUCT MODEL CODE 10
4.2. TYPICAL COMMISSIONING PROCEDURES 11
5. GENERAL THEORY OF OPERATION 11
5.1. STANDARD AUTOMATIC TRANSFER SWITCH 11
5.1.1. NORMAL SEQUENCE OF OPERATION -OPEN TRANSITION 11
5.1.2. NORMAL SEQUENCE OF OPERATION -CLOSED TRANSITION 12
5.2. SERVICE ENTRANCE AUTOMATIC TRANSFER SWITCH 16
5.2.1. NORMAL OPERATION 16
5.2.2. OVER CURRENT TRIP 17
5.2.3. SERVICE DISCONNECT PROCEDURE 17
5.2.4. ADDITIONAL PROCEDURES 19
5.3. TEST MODES 21

TS 880 TRANSFER SWITCH
PM064 REV 8 10/01/25 Thomson Technology
6. OVER CURRENT PROTECTION 21
6.1. STANDARD TS 880 AUTOMATIC TRANSFER SWITCH 22
6.2.OPTIONAL TS 880 AUTOMATIC TRANSFER SWITCH WITH INTEGRAL OVER
CURRENT PROTECTION 22
7. SERVICING TRANSFER SWITCH MECHANISMS 23
7.1. SERVICING –100A-250A S STYLE MOLDED CASE SWITCH TYPE TRANSFER
MECHANISMS 23
7.1.1. GENERAL DESCRIPTION 23
7.1.2. EQUIPMENT INSPECTION 24
7.1.3. MANUAL OPERATION 24
7.1.4. RECOMMENDED MAINTENANCE 25
7.2. SERVICING–400A-1200A MOLDED CASE TYPE TRANSFER MECHANISMS 26
7.2.1. GENERAL DESCRIPTION 26
7.2.2. EQUIPMENT INSPECTION 27
7.2.3. MANUAL OPERATION 28
7.2.4. RECOMMENDED MAINTENANCE 28
7.3. SERVICING –800A –4000A INSULATED CASE TYPE TRANSFER MECHANISMS
29
7.3.1. GENERAL DESCRIPTION 30
7.3.2. EQUIPMENT INSPECTION 30
7.3.3. MANUAL OPERATION 31
7.3.4. RECOMMENDED MAINTENANCE 32
8. FRONT VIEW (TYPICAL) 3 POLE 100A-250A S STYLE TRANSFER MECHANISM
33
9. FRONT VIEW (TYPICAL) 3 POLE 400A-1200A T STYLE TRANSFER MECHANISM
34
10. FRONT VIEW (TYPICAL) 3 POLE 800A-4000A INSULATED CASE TYPE
TRANSFER MECHANISM 35
11. CONNECTION CONFIGURATION OPTIONS 36
12. CABLE TERMINAL INFORMATION 37
13. REQUIREMENTS FOR UPSTREAM CIRCUIT PROTECTIVE DEVICES 38

TS 880 TRANSFER SWITCH
PM064 REV 8 10/01/25 Thomson Technology
13.1. WITHSTAND CURRENT RATINGS (ALL MODELS WITHOUT INTEGRAL
OVERCURRENT PROTECTION OPTION) 38
13.2. INTERRUPTING CAPACITY CURRENT RATINGS (ALL MODELS WITH INTEGRAL
OVERCURRENT PROTECTION OPTION) 39
14. GROUND FAULT SITE TEST REQUIREMENTS 39
14.1. PERFORMANCE TEST 40
15. TROUBLESHOOTING (100A-1200A MOLDED CASE SWITCH TYPE ATS) 40
16. TROUBLESHOOTING (800A-4000A INSULATED CASE SWITCH TYPE ATS) 43
17. POWER SWITCHING DEVICE TROUBLESHOOTING (800A-4000A INSULATED
CASE SWITCH TYPE ATS)45
18. POWER SWITCHING DEVICE DRAWING 47
19. DRAWOUT CHASSIS ENGINEERING DRAWING 48
20. ELECTRICAL DIAGRAMS 49
21. REPLACEMENT PARTS 52
22. PRODUCT RETURN POLICY53
23. NOTES 54
24. PERFORMANCE TEST FORM55

TS 880 TRANSFER SWITCH
PM064 REV8 10/01/25 1Thomson 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 04/11/15 Original release.
Rev1 04/12/21 Additional information for Closed Transition Operation
Rev 2 05/03/08 Changes to incorporate reversing style ATS motor for 100-250A
transfer switches
Rev 3 05/05/11 Changes to Section 5 & Section 21.
Rev 4 06/05/08 Changes to Section 13.
Rev 5 07/02/01 Changes to Section 13.
Rev 6 07/02/27 Changes to Section 12, Cable Terminal Information
Rev 7 08/03/05 Changes to Incorporate new S-Style mechanism (100A, 150A,
200A, 250A)
Rev 8 10/01/25 Changes to Incorporate Seismic Certification and Mounting
Requirements
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.

TS 880 TRANSFER SWITCH
PM064 REV8 10/01/25 2Thomson Technology
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.
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 880 TRANSFER SWITCH
PM064 REV8 10/01/25 3Thomson 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 (refer to engineered
drawings), 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.
To change the transfer switch configuration the following must be accomplished:

TS 880 TRANSFER SWITCH
PM064 REV8 10/01/25 4Thomson Technology
qChange voltage taps of the potential transformers (i.e. PT’s) to system voltage (refer to
drawings)
qOnce the voltage taps have been set to correct operating voltage, the “control circuit
isolation plug” on the mechanism, may be reconnected, prior to voltage energization.
qChange TSC 800 programming (refer to the TSC 800 instruction manual (PM049). The
following settings will require reprogramming:
ØSystem voltage
ØUtility under voltage pickup (typically 90% of system voltage)
ØUtility under voltage dropout (typically 80% of system voltage)
ØUtility over voltage pickup (typically 110% of system voltage)
ØUtility over voltage dropout (typically 105% of system voltage)
ØGenerator under voltage pickup (typically 90% of system voltage)
ØGenerator under voltage dropout (typically 80% of system voltage)
ØGenerator over voltage pickup (typically110% of system voltage)
ØGenerator over voltage dropout (typically 105% of system voltage)
Record any changed setting on the TSC 800 Programming Data Sheets for future
reference.
qComplete the blank calibration label and attach to the inside of the transfer switch
enclosure door.
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 800 controller.