User manual THOMSON TS 840

[. . . ] TS 840 AUTOMATIC TRANSFER SWITCHES INSTALLATION, OPERATING & SERVICE MANUAL PM057 Rev 8 10/01/25 9087A ­ 198th Street, Langley, BC Canada V1M 3B1 Y Telephone (604) 888-0110 Telefax (604) 888-3381 Y E-Mail: info@thomsontechnology. com Y www. thomsontechnology. com TS 840 TRANSFER SWITCH TABLE OF CONTENTS 1. UPSTREAM CIRCUIT PROTECTIVE DEVICES/ELECTRICAL CONNECTIONS TRANSFER SWITCHES WITH INTEGRAL OVER CURRENT PROTECTION SYSTEM PHASING-HIGH LEG DELTA SYSTEMS REMOTE START CONTACT FIELD WIRING DIELECTRIC TESTING INSTALLATION OF OPEN TYPE TRANSFER SWITCHES MOUNTING OF ENCLOSED TRANSFER SWITCHES 2 2 3 4 5 5 5 5 4. GENERAL DESCRIPTION 4. 1. PRODUCT MODEL CODE TYPICAL COMMISSIONING PROCEDURES 8 10 11 5. GENERAL THEORY OF OPERATION 5. 1. STANDARD AUTOMATIC TRANSFER SWITCH SERVICE ENTRANCE AUTOMATIC TRANSFER SWITCH TEST MODES 11 11 12 16 6. OVER CURRENT PROTECTION 6. 1. [. . . ] The equipment will be shipped from the factory with a long-time current setting of 100% (of the equipment rating) and maximum instantaneous/short-time current and time delay settings. 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 4. 1 Product Model Code for types of integral over current protection which are supplied with the transfer switch. PM057 REV 8 10/01/25 17 Thomson Technology TS 840 TRANSFER SWITCH 7. GENERAL NOTES ON SERVICING TRANSFER SWITCH MECHANISM DANGER!!!!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 When performing any service work on the transfer mechanism, it is imperative that the following be observed: 7. 1. To maintain mechanical integrity, ensure that: · · · · 7. 2. Mechanical interlocking is correct when one power switching opens well before the other should close. The operating linkages are not damaged or bent, and that all bearing points operate freely. To maintain electrical integrity, ensure that: · All electrical connections, especially power connections, are clean and adequately tightened. · · Corroded or loose power connections will cause destructive heating, and may cause premature tripping. All control devices are adequately secured in their plug-in fixtures. To maintain operational integrity, ensure that: 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 PM057 REV 8 10/01/25 18 Thomson Technology TS 840 TRANSFER SWITCH 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 highpotential testing to ensure that required insulation levels have been maintained. PM057 REV 8 10/01/25 19 Thomson Technology TS 840 TRANSFER SWITCH 8. TRANSFER SWITCH MECHANISM OPERATION­ 100A-800A, S Style The transfer mechanism consists primarily of the transfer gear motor, a drive hub assembly, and two power switching device operating arms. The reversible transfer gear motor drives the drive hub assembly, which in turn moves the power switching device operating arms. 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. Should limit switch adjustment be required, it is advisable to consult Thomson Technology for further information. The transfer switch mechanism has three possible positions: a) b) c) Utility power switching device closed and generator power switching device open; Generator power switching device closed and utility power switching device open; Both utility and generator power switching devices open, but NEVER both utility and generator power switching devices closed at the same time. 8. 1. MANUAL OPERATION DANGER!!!!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 Isolate the transfer switch from all sources of supply before opening the enclosure for manual operation. With all sources of power de-energized to the transfer switch, the control circuit isolation plug can be unplugged to prevent subsequent operation. [. . . ] Once the Utility power switching device opens, the transfer switch mechanism will pause in the neutral position for the 3-second neutral delay period, then the mechanism will complete the transfer and close the generator power switching device. To determine correct operation, observe the following on the TSC 80 faceplate: i) Generator Source green LED is "ON" ii) Red LED above mimic bus for the generator source is "ON" iii) Green "Load" LED is "ON" iv) Utility Source green LED is "ON" v) Utility Power Fail Simulate yellow LED is "ON" vi) 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 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. Note: the utility return delay timer will only begin timing if the utility voltage is above 85% nominal on all phases. [. . . ]