THOMSON TS 870 Service Manual
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THOMSON TS 870 Service Manual

Automatic transfer switches
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TS 870
AUTOMATIC TRANSFER SWITCHES
INSTALLATION, OPERATING &
SERVICE MANUAL
PM062 Rev 6 08/08/01
th
9087A – 198
Street, Langley, BC Canada V1M 3B1
Telephone (604) 888-0110
Telefax (604) 888-3381
E-Mail: info@thomsontechnology.com
www.thomsontechnology.com

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  • Page 1 TS 870 AUTOMATIC TRANSFER SWITCHES INSTALLATION, OPERATING & SERVICE MANUAL PM062 Rev 6 08/08/01 9087A – 198 Street, Langley, BC Canada V1M 3B1 Telephone (604) 888-0110 Telefax (604) 888-3381 E-Mail: info@thomsontechnology.com www.thomsontechnology.com...

  • Page 3: Table Of Contents

    TEST MODES OVER CURRENT PROTECTION 6.1. STANDARD TS 870 AUTOMATIC TRANSFER SWITCH 6.2. OPTIONAL TS 870 AUTOMATIC TRANSFER SWITCH WITH INTEGRAL OVER CURRENT PROTECTION GENERAL NOTES ON SERVICING TRANSFER SWITCH MECHANISM TRANSFER SWITCH MECHANISM – 100A-800A, S STYLE 8.1. MANUAL OPERATION...
  • Page 4 TRANSFER SWITCH MECHANISM –1000A-1200A, T-STYLE 9.1. MANUAL OPERATION 10. RECOMMENDED MAINTENANCE 11. FRONT VIEW (TYPICAL) 3 / 4 POLE 100A-250A S-STYLE TRANSFER MECHANISM 12. FRONT VIEW (TYPICAL) 3 POLE 400A-800A S-STYLE TRANSFER MECHANISM (MECHANISM FRONT COVER REMOVED) 13. FRONT VIEW (TYPICAL) 3 / 4 POLE 1000A-1200A T-STYLE TRANSFER MECHANISM 14.

  • Page 5: Product Revision History

    TS 870 TRANSFER SWITCH 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.

  • Page 6: Notes To Installer

    TS 870 TRANSFER SWITCH 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°...

  • Page 7: 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.

  • Page 8: System Phasing-High Leg Delta Systems

    (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...

  • Page 9: Remote Start Contact Field Wiring

    (A Phase for both supplies). Failure to do so will result in equipment damage.
  • Page 10 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.

  • Page 11: Product Model Code

    4.1. PRODUCT MODEL CODE The type of TS 870 series transfer switch supplied is identified by way of a 21 digit product code which appears on the equipment rating plate (MODEL) on the door of the transfer switch, and on the transfer switch drawings. The model code structure and definitions are as follows: 1-3.

  • Page 12: Typical Commissioning Procedures

    When utility supply voltage drops below a preset nominal value (adjustable from 70% to 100% of nominal) on any phase, an engine start delay circuit is initiated and the transfer to utility supply signal will be removed (i.e. contact opening). Following expiry of the engine start delay period (adjustable from 0 to 60 sec.) an engine start...

  • Page 13: Service Entrance Automatic Transfer Switch

    (adjustable from 70% to 95% of nominal), the engine warm-up timer will be initiated. Once the warm-up timer expires (adjustable from 0 to 60 sec.), the Transfer to Generator Supply signal (contact closure) will be given to the transfer switch mechanism.
  • Page 14 TS 870 TRANSFER SWITCH transfer of the load to the generator supply. The utility source will be locked out and the load will remain on the generator supply until the TSC 80/TSC 80E alarm signal is manually reset. Refer to the TSC 80/TSC 80E Instruction Manual for further details on Transfer Fail operation.
  • Page 15 Personal Protective Equipment (PPE). Failure to do so may cause personal injury or death 1. Open the door to the transfer switch using a suitable tool and opening the door lock with the key.
  • Page 16 3. If the position of the transfer switch mechanism is not in the "neutral position", manually operate the transfer switch mechanism depending on mechanism type as follows: Note: Refer to product drawings in sections 12, 13 &...

  • Page 17: Test Modes

    Note: The transfer switch will automatically return to the utility supply (if within nominal limits) if the generator set fails while in the test mode.

  • Page 18: Optional Ts 870 Automatic Transfer Switch With Integral Over Current Protection

    240V. An upstream over current protection device is required on the generator source which feeds the TS 870 Transfer Switch if integral over current protection option is not specified on the ATS. Note: For models of transfer switch with adjustable integral over current protection trip units, the over current protection must be set prior to operation.

  • Page 19: General Notes On Servicing Transfer Switch Mechanism

    Ensure that power switching device travel far enough to reset any internal trip unit (it is more important for the toggle to go fully in the "off" direction, than in the "on" direction).
  • Page 20 Only qualified personnel should undertake Service work. Failure to correctly maintain an automatic transfer switch may present a hazard to life and equipment. Full operational testing must be done prior to placing a transfer switch in service subsequent to any maintenance or repair. Any service work involving electrical components requires high- potential testing to ensure that required insulation levels have been maintained.

  • Page 21: Transfer Switch Mechanism - 100A-800A, S Style

    The power switching device toggles are set inside the operating arm slots and are moved by them. There are two limit switches, which are contacted by the operating arms (one for each power switching device), which disconnect the transfer motor power supply when the power switching devices have attained full travel.
  • Page 22 Automatic operation may be regained by replacing the control circuit isolation plug. With all sources of power de-energized to the transfer switch, the control circuit isolation plug can be re-connected. The drive system will operate the transfer switch to the required position.

  • Page 23: Transfer Switch Mechanism -1000A-1200A, T-Style

    The power switching device toggles are set inside the yokes and are moved by them. There are two limit switches, which are contacted by the operating yokes (one for each direction of travel), which disconnect the transfer motor power supply when the power switching devices have attained full travel.
  • Page 24 TS 870 TRANSFER SWITCH connected. The drive system is self-engaging and will operate the transfer switch to the required position. (See manual operation instruction on front of transfer switch mechanism.) PM062 REV 6 08/08/01 Thomson Technology...

  • Page 25: Recommended Maintenance

    Clean or replace any contact surfaces, which are dirty, corroded or pitted. 10.4. Transfer switches should be in a clean, dry and moderately warm location. If signs of moisture are present, dry and clean transfer switch. If there is corrosion, try to clean it off.
  • Page 26 TS 870 TRANSFER SWITCH 10.10. The motor and gearbox on all Transfer Mechanism styles are permanently lubricated, and should not require attention under normal operating circumstances. PM062 REV 6 08/08/01 Thomson Technology...

  • Page 27: Front View (Typical) 3 / 4 Pole 100A-250A S-Style Transfer Mechanism

    TS 870 TRANSFER SWITCH FRONT VIEW (TYPICAL) 3 / 4 POLE 100A-250A S-Style TRANSFER MECHANISM PM062 REV 6 08/08/01 Thomson Technology...

  • Page 28: Front View (Typical) 3 Pole 400A-800A S-Style Transfer Mechanism (Mechanism Front Cover Removed)

    TS 870 TRANSFER SWITCH FRONT VIEW (TYPICAL) 3 POLE 400A-800A S-Style TRANSFER MECHANISM (Mechanism Front Cover Removed) ØC ØB ØA ØA ØB ØC ØA ØB ØC CUSTOMER ORDER No. WORK ORDER No. DWN BY AUTH BY DATE DRAWING/FILE No. SHEET...

  • Page 29: Front View (Typical) 3 / 4 Pole 1000A-1200A T-Style Transfer Mechanism

    TS 870 TRANSFER SWITCH FRONT VIEW (TYPICAL) 3 / 4 POLE 1000A-1200A T-Style TRANSFER MECHANISM PM062 REV 6 08/08/01 Thomson Technology...

  • Page 30: Connection Configuration Options

    TS 870 TRANSFER SWITCH CONNECTION CONFIGURATION OPTIONS PM062 REV 6 08/08/01 Thomson Technology...

  • Page 31: Cable Terminal Information

    For other model types not shown, contact Thomson Technology for further information. Fuse ratings shown are maximum allowable to permit use of the transfer switch in application with available fault current not exceeding that shown. Consideration must be given to fuse sizing when fuses also provide overload protection.

  • Page 32: Interrupting Capacity Current Ratings (All Models With Integral Overcurrent Protection Option)

    Per NEC and UL1008, a ground fault protected system shall be performance tested when first installed on site. A written record of this shall be made and be available to the authority having jurisdiction. A form is provided at the back of this manual for this purpose – see Section 21.
  • Page 33 The use of high-voltage testers and resistance bridges may be required. A simulated fault current is to be generated by a coil around the sensors. The reaction of the circuit-interrupting device is to be observed for correct response. The results of the test are to be recorded on the test form provided.

  • Page 34: Troubleshooting

    Personal Protective Equipment (PPE). Failure to do so may cause personal injury or death Note: An optional hand held, plug-in Service Display Module (SDM) is available for the TSC 80 Transfer Controller. The SDM module provides an LCD screen to display additional detailed information on the operation and settings of the TSC 80 controller for simplified servicing/trouble shooting procedures.
  • Page 35 TS 870 TRANSFER SWITCH - Warm-up time delay function has not timed out yet (verify TSC 80/TSC 80E timer setting) - A loose control connection - Faulty motor limit switch - Defective motor - Defective TSC 80/TSC 80E controller (verify output signals with circuit board mounted diagnostic LED’s)

  • Page 36: Replacement Parts

    There are no user serviceable components located on the TSC 80/TSC 80E printed circuit board. If the TSC 80/TSC 80E controller is deemed to be defective it must be returned to the Thomson Technology Factory for repair or replacement. Please refer to Product Return Policy section of this manual further information on product return procedures required.

  • Page 37: Product Return Policy

    Returns only: Sales Fax (604) 888-5606 Warranty replacement/Warranty Repair: Service Fax (604) 888-3370. Upon receipt of your request, Thomson Technology will confirm with a copy of our Order Acknowledgement via fax advising the RMA number which should be used to tag the defective controller prior to shipment.

  • Page 38: Notes

    TS 870 TRANSFER SWITCH NOTES PM062 REV 6 08/08/01 Thomson Technology...

  • Page 39: Performance Test Form

    TS 870 TRANSFER SWITCH PERFORMANCE TEST FORM This form should be retained by those in charge of the building electrical installation in order to be available to the authority having jurisdiction. Date Personnel Tests performed Comments Interconnection evaluation Grounding point evaluation...
  • Page 41 NOTE: The factory default system voltage setting for multi-voltage TS 840/870 transfer switches is 480VAC, which will be indicated by a letter “Y” in the voltage code as shown on the ATS model code (e.g. TS 873A0250A1AY) and on a warning tag attached to the isolation plug.
  • Page 42 FAILURE TO OBTAIN THE CORRECT ATS PHASING WILL RESULT IN EQUIPMENT MALFUNCTION AND DAMAGE. 4) Confirm cable size is correct for the lugs supplied in the transfer switch (line and load). Confirm the cables were meggered by the electrical contractor to ensure no cross phase connections or conduction to ground.
  • Page 43 Green LED above mimic bus for the Utility source is “OFF” 12) To terminate the test, press the Utility Power Fail Simulate push button on the TSC 80/TSC 80E faceplate again and hold until the LED above the pushbutton changes state. The transfer switch will begin transferring to the utility supply following the 2-minute utility return delay period.
  • Page 44 2-minute utility return timer. On ATS using TSC 80 controller, the engine will be automatically re-tested on load every week (i.e.7 days) at the same time of day that the first test was initiated. On ATS using TSC 80E controller, the engine will be automatically re-tested as programmed in software.
  • Page 45 Personal Protective Equipment (PPE). Failure to do so may cause personal injury or death A) TSC 80 CONTROLLERS ONLY (Refer to Section B below for TSC 80E Controllers) Ensure all power sources are de-energized prior to opening the transfer switch enclosure door.
  • Page 46 B) TSC 80E CONTROLLERS ONLY (Refer to Section A above for TSC 80 Controllers) To change system voltage on a TSC 80E controller, the transfer switch must be energized to provide control power to the controller to allow software programming. To change the software setting, follow the procedure below;...
  • Page 47 ) should appear to signal data entry is possible). 5. Use the UP arrow key to adjust the right-hand digit, and if required use the DOWN arrow key to adjust the left-hand digit. Once the desired number is displayed, press ENTER key to accept the value.

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