HAT660 Dual Power ATS Controller Color: Hat660b Overview The HAT660 Dual Power ATS Controller is an intelligent dualsupply transfer module that integrates programmable functions, automatic measurement, local display, and digital communication. Built around a microprocessor core, it provides precise detection and reliable automatic switching between two power sources for three phase systems. Key benefits Reduces manual errors by automating measurement and transfer logic, simplifying operation and maintenance. Fast, accurate detection of twoway threephase voltages to identify overvoltage, undervoltage, loss of phase, and overfrequency or underfrequency conditions. Passive control outputs for safe and reliable actuation of transfer switch mechanisms. Networking and display capabilities allow status monitoring and integration with supervisory systems. Compact, simple wiring and robust circuitry improve installation speed and operational reliability. Main functions and features Voltage and frequency monitoring for two independent power supplies. Automatic decisionmaking and programmable transfer logic based on measured parameters. Passive control switch outputs for PC class, CB class, and CC class transfer switches. Digital communication interface and local display for status and diagnostics. Microprocessor based control for consistent, repeatable performance. Compact structure and straightforward wiring for easy retrofits and installations. Compatibility and applications Compatible with Mains to Mains, Mains to Generator, and Generator to Generator power arrangements. Designed for use with a wide range of automatic transfer switch types used in industrial and infrastructure settings. Suitable for deployment in electric power distribution, telecommunications sites, petroleum and coal facilities, metallurgy plants, railways, municipal buildings, intelligent building systems, electrical equipment rooms, automatic control systems, and testing stations. Practical use scenarios Telecommunications site: Automatically switch to generator supply when mains voltage falls outside preset thresholds to maintain continuous service. Industrial facility: Manage transfer between utility mains and onsite generators during planned maintenance or outages while protecting equipment from phase loss and frequency excursions. Public infrastructure: Control backup power transfer for critical municipal systems such as pumping stations or signaling equipment, with local diagnostics and remote communication for monitoring. Technical notes Detects twoway threephase voltage and evaluates overvoltage, undervoltage, loss of phase, overfrequency, and underfrequency conditions. Provides passive control outputs for transfer switching and supports programmable transfer logic. Designed for compact installation and simplified wiring to reduce panel space and installation time. This controller is intended for integration into control units and power distribution systems requiring reliable, automated transfer between two power sources while maintaining clear monitoring and communication capabilities.