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IEM - Model UL 1008 -Low Voltage Automatic Transfer Switch (ATS)
IEM’s Automatic Transfer Switch (ATS), equipped with an advanced breaker/ switch transfer pair, provides increased power distribution reliability and reduced maintenance as compared to solenoid-based operators. Integrated electrical overcurrent protection is optionally available within the same footprint. The switching elements can be non-automatic switches or breakers in either 3P or 4P configurations. The ATS is controlled by the Woodward/IEM DTSC/XFER-200, which has an easy to use interface and supports a wide variety of communications and I/O options, including programmable logic capabilities. Our low voltage ATS equipment is’s are rated for emergency applications and suitable for critical and non-critical loads.
- Current: 3200A max
- Voltage: 208/240/480/600VAC
- Short-circuit withstand: 65/85/100/150kA
- Short-time withstand: 65/85kA
- Breakers/Switches: Siemens WL 3200AF, 3P/4P
- Access/Entry: Rear top or bottom
- Open-, delayed-, or closed-transition operation
- Automatic or non-automatic (manual) control
- Seamless integration with IEM LV switchboards and switchgear
- Optional Service Entrance rating
- Optional integrated overcurrent protection
- Optional bypass/Isolation models
Control Features
The DTSC is a premium controller with advanced features, including:
- Event recorder with time stamping
- Back-lit LCD display
- Alarm functions and self-monitoring capabilities
- Versatile programmable logic capabilities
Standard ATS Control Features
All of the standard user interface / control features detailed in the DTSC/XFER-200 manual plus:
- Control Signals, inputs
- ATS enable/inhibit input
- Re-transfer inhibit input
- Closed transition bypass input (if applicable)
- Standby source transfer request input
- Standby source inhibit / external load shed input
Control Signals, outputs
- (1) NO and (1) NC breaker position contacts
- (1) NO ready for auto contact
- (1) NO source availability contact for each source
- (1) NO and (1) NC generator start contacts
- (1) NO and (1) NC common alarm contacts
Optional ATS Control Features
Functions:
- Closed transition capability with passive synchronization
- Automatic active synchronization or soft load transition
- Power metering with overload alarm and load shed functions
Control Power:
- Capacitor buffer to maintain local display and comms during transfers
- Redundant external control power input
Communications:
- Modbus RTU or TCP interface for monitoring, control, and metering
- Remote manual/SCADA operation
Control Signals:
- Standard I/O can be repurposed for custom functions
- Expandable I/O for additional custom logic/PLC capabilities