THOMSON TS 870 Manuale utente

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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 4 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

(O range)

(High Leg)

(Yellow)

(R ed)

(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 TRANSFER SWITCH

PM062 REV 6 08/08/01 5 Thomson Technology

the supply source be arranged such that the phase of highest potential with respect

to ground is not connected to the power supply inputs to the controller (A Phase for

both supplies). Failure to do so will result in equipment damage.

Per NEC Article 384-3 (f) “The B phase shall be that phase having the higher voltage

to ground on a 3-phase, 4-wire delta connected systems.”

3.5. REMOTE START CONTACT FIELD WIRING

As a minimum, the remote engine start control field wiring shall conform to the local

regulatory authority on electrical installations. Field wiring of a remote start contact

from a transfer switch to a control panel should conform to the following guidelines to

avoid possible controller malfunction and/or damage.

3.5.1. Minimum #14 AWG (2.5mm2) wire size shall be used for distances up to 100ft

(30m)1). For distances exceeding 100 ft. (30m) consult Thomson Technology

3.5.2. Remote start contact wires should be run in a separate conduit.

3.5.3. Avoid wiring near AC power cables to prevent pick-up of induced voltages.

3.5.4. An interposing relay may be required if field-wiring distance is excessively

long (i.e. greater than 100 feet (30m)) and/or if a remote contact has a

resistance of greater than 5.0 ohms.

3.5.5. The remote start contact must be voltage free (i.e. dry contact). The use of a

“powered” contact will damage the transfer controller.

3.6. DIELECTRIC TESTING

Do not perform any high voltage dielectric testing on the transfer switch with the TSC

80/TSC 80E controller connected into the circuit as serious damage will occur to the

controller. All AC control fuses and control circuit isolation plugs connected to the

TSC 80/TSC 80E must be removed if high voltage dielectric testing is performed on

the transfer switch.

3.7. INSTALLATION OF OPEN TYPE TRANSFER SWITCHES

Please refer to the factory for additional information.

4. GENERAL DESCRIPTION

Thomson Technology TS 870 series of Automatic Transfer Switches employ two mechanically

interlocked enclosed contact power switching units and a microprocessor based controller to

automatically transfer system load to a generator supply in the event of a utility supply failure.

TS 870 TRANSFER SWITCH

PM062 REV 6 08/08/01 6 Thomson Technology

System load is then automatically re-transferred back to the utility supply following restoration of the

utility power source to within normal operating limits.

The standard TS 870 series Automatic Transfer Switch is rated for 100% system load and requires

upstream over current protection. The TS 870 Automatic Transfer Switch may be supplied with

optional integral over current protection within the enclosed contact power switching units for

applications such as Service Entrance Rated equipment. Refer to Section 6 of this manual for

detailed information on over current protection.

The TS 870 series transfer switches use a type TSC 80 standard or optional TSC 80E

microprocessor based controller, which provides all necessary control functions for fully automatic

operation. The TSC 80/TSC 80E controller is mounted on the door of the transfer switch enclosure

and operating status is shown via LED lights. For further information on the TSC 80/TSC 80E

Transfer Controller, refer to separate instruction manual PM063.

The power switching devices used for the Utility and Generator sources are operated by an

electrically driven motor mechanism in the transfer switch. The transfer switch motor utilizes the

power from the source to which the electrical load is being transferred. The mechanism provides a

positive mechanical interlock to prevent both power switching units from being closed at the same

time, which allows an open transition, “break-before-make” transfer sequence. The TSC 80/TSC

80E transfer controller provides a standard neutral position delay timer to allow adequate voltage

decay during transfer operation to prevent out of phase transfers.

Note: For the purpose of this manual, the following standard nomenclature is utilized:

• Utility: to indicate the source of primary power

• Generator: to indicate the source of standby power

• Power switching device: to indicate the transfer switch power switching device

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