Thomson Power Systems TS 923 Automatic Transfer Switches employ a power contactor switching unit with a microprocessor-based controller to automatically start a generator and transfer system load to the generator supply in the event of a utility supply failure. System load is automatically re-transferred back to the utility supply following restoration of the utility power source to within normal operating limits. All load transfer sequences are “Open Transition” (i.e. “break-before-make”) utilizing an in-phase transfer detection control sequence. All TS 923 transfer switch models have been tested in accordance with UL 1008 standards. Molded case circuit breakers or fuses with overcurrent protection are required upstream of the transfer switch. The standard TS 923 Transfer Switch is rated for 100% system load.
The TS 923 Transfer Switches use a TSC 9 microprocessor-based controller. All necessary control functions for fully automatic operation are provided from the TSC 9 and door-mounted HMI panel.
The TS 923 Commercial Transfer Switches are also available with the Service Entrance option.
POWER CONTACTOR SWITCHING UNITS
- 100% Continuous Current Ratings for use with all load types
- Suitable for Copper and Aluminum power cable connections
- High Short Circuit Withstand Ratings when used with upstream molded case circuit breakers
RELIABLE SOLENOID OPERATED TRANSFER MECHANISM
- Fast Operation allows In-Phase Power Transfer
- Electrical and Mechanical Interlocked mechanism prevents simultaneous closure of Utility and Generator sources
SUPERIOR SERVICEABILITY
- Plug-in Control Devices allow superior field serviceability
- Enclosed Power Contacts for safe operation and
CONTROL FEATURES
- Advanced TSC 9 Series Transfer Controller with features specifically designed for Residential and LightCommercial ATS applications. User programmable timers, simple LED interface
- Outputs for Automatic Load Shed & Remote Alarming
- kW Load Shed Control (Optional) reduces costs by sizing your standby power system for prioritized loads
- Universal Generator Interface kit option allows TS 923 to be applied to multiple types of generator sets utilizing 240V remote starting control systems
PRODUCT DATA
- 100A, 200A, 400A Models
- Service Entrance rated Models (optional)
- 120/208/220/240VAC Three Phase, 4 wire c/w Neutral
- 13 Pole, 50/60hz
- Rust Resistant Aluminum Enclosures
- NEMA 3R Door for Outdoor Applications (Optional)
- Withstand Short Circuit Current Ratings up to 50kA
- Sturdy nclosure and door construction
QUALITY ASSURANCE
- ISO 9001 Registered Manufacturing Facilities
- NEMA & UL50
- UL 508
- IEEE C62.41, C37.90.1
- FCC CFR 47 Part 15, (Subpart B) Class B
- EN 61000 Series Electromagnetic Capability
SAFETY STANDARDS
- UL 1008 Listed Automatic Transfer Switches for use in optional standby system
WARRANTY
- 2 year limited warranty included
