No break automatic critical power protection

Power Continuity

Power Continuity

ATS - Automatic Transfer Switch for Generators

On this page you will learn how an ATS works and why they are important to any generator system.

What is an ATS Panel?

An ATS is an intelligent switch that detects power interruptions and automatically transfers the electrical load to a backup generator. When the utility power is restored, it switches the load back to the utility source and shuts off the generator. Each generator, whether fully automatic or manual, requires an ATS Panel.

Key Components of an ATS Generator Panel

  1. Power Monitoring System
    • Continuously monitors the utility power supply for voltage levels, frequency, and phase.
    • Detects anomalies such as power outages, surges, or sags.
  2. Control Logic and Microprocessor
    • The "brain" of the ATS, responsible for decision-making.
    • Sends commands to transfer power when it detects a power issue.
  3. Transfer Mechanism
    • A physical switch or relay system that transfers the load between the utility and the generator.
    • Often includes motorized breakers or contactors for reliability.
  4. Generator Start Signal
    • Activates the generator when the ATS detects a power outage.
    • Ensures the generator starts before transferring the load to prevent downtime.
  5. Return-to-Normal Signal
    • Reverses the transfer process when utility power is restored and stable.
    • Shuts down the generator to save fuel and maintenance.
  6. Safety Features
    • Interlocks: Prevent the utility and generator from connecting simultaneously, avoiding back-feeding.
    • Overload Protection: Ensures the system operates within safe power limits.
    • Delay Timers: Allow for stabilization of power sources before switching.

How the ATS Generator Panel works in steps

  1. Monitoring Phase
    The ATS constantly monitors the utility power supply for consistency in voltage, frequency, and phase alignment.
  2. Power Outage Detection
    When an outage or fluctuation is detected, the ATS determines the need to switch to generator power.
  3. Generator Activation
    The ATS sends a start signal to the generator, which begins producing electricity.
  4. Transfer to Generator Power
    Once the generator output stabilizes, the ATS switches the load to the generator.
  5. Utility Power Restoration
    The ATS monitors the utility power and ensures it is stable before initiating the switch back.
  6. Transfer Back to Utility Power
    After verifying the utility power is reliable, the ATS transfers the load back and stops the generator.
  7. System Reset
    The ATS resets itself to monitoring mode, ready for the next outage.

Benefits of an ATS Generator Panel

  • Automatic Operation: Requires minimal human intervention.
  • Seamless Transition:: Reduces downtime during power outages.
  • Enhanced Safety: Prevents electrical hazards like back-feeding.
  • Reliability: Ensures continuous power for critical systems.
  • Load Shedding: Multiple ATS panels can be stepped in to reduce the initial impact on the diesel generator, therefore allowing you to size the generator efficiently.

Why choose an ATS Panel from Power Continuity?

An ATS generator panel is a sophisticated device designed to provide seamless power continuity by automatically switching between utility power and a backup generator during outages. It monitors the utility supply, activates the generator when needed, transfers the load efficiently, and returns it to utility power once stable.