THOMSON TS 880 - Page 47

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TS 880 TRANSFER SWITCH

PM064 REV8 10/01/25 41 Thomson Technology

Table of Contents

Default Chapter3
- Table of Contents3
1 Product Revision History7
2 Equipment Storage7
- Environmental Conditions7
  - Equipment Storage8
  - Equipment Operating8
3 Notes to Installer8
- Upstream Circuit Protective Devices/Electrical Connections8
- Transfer Switches with Integral over Current Protection9
- Transfer Switches with Multi-Tap Voltage Capability9
- System Phasing-High Leg Delta Systems10
- Remote Start Contact Field Wiring11
- Dielectric Testing12
- Mounting of Enclosed Transfer Switches12
4 General Description15
- Product Model Code16
- Typical Commissioning Procedures17
5 General Theory of Operation17
- Standard Automatic Transfer Switch17
  - Normal Sequence of Operation - Open Transition17
  - Normal Sequence of Operation - Closed Transition18
- Service Entrance Automatic Transfer Switch22
- Test Modes27
6 Over Current Protection27
- Standard Ts 880 Automatic Transfer Switch28
- Optional Ts 880 Automatic Transfer Switch with Integral over Current Protection28
7 Servicing Transfer Switch Mechanisms29
- Servicing -100A-250A S Style Molded Case Switch Type Transfer Mechanisms29
- Servicing- 400A-1200A Molded Case Type Transfer Mechanisms32
- Servicing - 800A - 4000A Insulated Case Type Transfer Mechanisms35
8 Front View (Typical) 3 Pole 100A-250A S Style Transfer Mechanism39
9 Front View (Typical) 3 Pole 400A-1200A T Style Transfer Mechanism40
10 Front View (Typical) 3 Pole 800A-4000A Insulated Case Type Transfer Mechanism41
11 Connection Configuration Options42
12 Cable Terminal Information43
13 Requirements for Upstream Circuit Protective Devices44
- Overcurrent Protection Option)44
- Interrupting Capacity Current Ratings (All Models with Integral Overcurrent Protection Option)45
14 Ground Fault Site Test Requirements45
- Performance Test46
15 Troubleshooting (100A-1200A Molded Case Switch Type Ats)46
16 Troubleshooting (800A-4000A Insulated Case Switch Type Ats)49
17 Power Switching Device Troubleshooting (800A-4000A Insulated Case Switch Type Ats)51
18 Power Switching Device Drawing53
19 Drawout Chassis Engineering Drawing54
20 Electrical Diagrams55
21 Replacement Parts58
22 Product Return Policy59
23 Notes60
24 Performance Test Form61

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