Dual Power Automatic Transfer Switch

The Dual Power Automatic Transfer Switch (ATS) monitors dual power sources-typically a primary utility grid and a backup generator-and automatically transfers the electrical load within milliseconds upon voltage loss, phase failure, or over/under-voltage. Engineered for mission-critical power distribution systems, it prevents downtime in commercial and industrial installations. 

Zero-Crossing Transfer Control: Microprocessor logic detects phase angle before switching to eliminate inductive load surges and extend motor life.

Three Stable Working Positions: Operates in Utility Normal, Generator Backup, or Manual Off positions with physical mechanical interlocks.

Alloy Contact Tips: Silver-cadmium oxide (AgCdO) contact bridges resist arc erosion and prevent contact welding under high inrush currents.

Dual-Power Isolation: Double-break main contacts provide reinforced electrical clearance for technician safety during manual overrides.

Integrated Communication Ports: RS485 interface supports Modbus-RTU protocol for remote telemetry integration into PLC or SCADA systems.

Data Centers & Server Rooms: Maintains continuous power to server racks during grid switching intervals.

Healthcare Facilities: Complies with emergency circuit standards for operating theaters and ICU life-support lines.

Telecommunication Towers: Automatically engages diesel gensets at remote off-grid or unstable rural cell sites.

Industrial Automation Lines: Protects continuous process manufacturing equipment from sudden phase dropouts.

Enclosure Integration: Factory pre-wired options inside IP54/IP65 wall-mounted sheet metal cabinets.

Controller Firmware: Customized voltage thresholds, dead-band timers, and generator exercise run schedules programmed prior to shipment.

Terminal Configurations: Extended busbars or tunnel terminals tailored to specific cable sizing requirements.

OEM Branding: Laser-etched nameplates and customized user manual documentation reflecting distributor branding.

Stamping & Molding: Automated progressive stamping presses produce copper busbar components within +-0.02 mm tolerances. Phenolic resin housings are injection-molded on 300-ton hydraulic presses to guarantee dielectric strength.

Assembly Process: Clean-room assembly lines utilize torque-calibrated electric screwdrivers to maintain uniform contact pressure across all poles.

Testing Protocol: 100% of units undergo automated factory testing (ATE) checking dielectric withstand voltage (2.5kV for 1 min), micro-ohm contact resistance, and functional transfer timing cycles under simulated loads.

Compliance Standards: IEC 60947-6-1 (Low-voltage switchgear and controlgear - Automatic transfer switching equipment), GB/T 14048.11.

Laboratory Reports: CB test certificates and CE declarations issued by TUV / Intertek.

Shipped Documentation: Each batch includes individual factory calibration test reports, 2D/3D CAD models (STEP/IGES), and wiring schematics.

Export Packaging: Individually sealed in anti-static moisture-barrier bags, cushioned with molded EPE foam, and packed in heavy-duty 5-layer corrugated export cartons.
Palletization: Fumigation-free wooden pallets secured with strapping and stretch wrap for ocean freight and air cargo protection.
Lead Time: Standard stock configurations ship within 7 to 10 days; customized OEM orders require 25 to 35 days.