Mains to Mains Automatic Transfer Switch.
Automatic switching between a primary Mains supply and a secondary supply. The secondary supply is presumed to be always available.
The ATS Mains - Mains is our range of ATS (Automatic Transfer Switch) panels for critical power applications. The Mains to Mains changeover switch is used where the primary local utility mains supply is backed up by a secondary supply feed into the building. This type of panel is often used for critical loads, such as emergency firefighting lifts. The ATS panel monitors the primary Mains A supply and will transfer the load to the secondary supply if it should fail, or fall outside preset limits. An adjustable delay is included when switching from primary to the secondary supply. A key switch is included to allow manual switching between the primary and secondary supplies.
Three phase (400V) ATS (Automatic Transfer Switch) panel. A phase failure relay is used for primary Mains A voltage monitoring and offers Under and Over voltage protection as well as phase sequence. The panel uses two timer relays to control timing functions in the panel. Timer 1 is used to control the Mains A restoration period, this controls the period the Mains A supply has to be healthy before engaging the Mains A contactor. Timer 2 controls the secondary supply switching period, this time period is activated when the primary supply fails and before the secondary supply is engaged.
Failure of the primary Mains A supply initiates the timing period before switching to the secondary supply B. The ATS automatically switches back to the primary Mains A supply on its return to a healthy state. Timer 1 controls the primary Mains A supply restoration period only switching back to primary Mains after this period has elapsed. This ensures the Mains A supply is stable.
The default setting for the primary Mains A restoration period is one minute and secondary supply switching timer is set for 15 seconds. (Both are fully adjustable).
Housed in a robust mild steel enclosure rated to IP65. Supplied with loose gland plate, and door key. Enclosure specification to EN 62208, RAL7035, EN 60529, IK10, EN 61439-1-2. Cable entry as standard is arranged for bottom entry with a direct connection into the contactors.
Our ABB Contactor Mains to Mains changeover switches come in 40A - 400A ratings. Please select the appropriate version for your supply. If you have any questions on which ATS panel is right for you please get in touch. We also have mains to generator changeover switches if your back-up supply uses a generator.
Assembled in the UK by Blandon Systems using parts conforming to EN60529, EN60947. Provided with a 12-month warranty