AUTOMATIC TRANSFER SWITCH GENERATOR
AUTOMATIC TRANSFER SWITCH PORTABLE

Reference: ELECTRICAL ENGINEER’S PORTABLE HANDBOOK – ROBERT B. Our ATS automatically sense and trigger when one of the sources has lost or gained power. AJ Power Automatic Transfer Switch (ATS3) is designed to continually monitor the mains (Grid) AC power supply for under / over voltage and under /over. Automatic transfer switches (ATS) shift the load between two power sources (Primary and secondary load sources). Figure 3 – Diagram illustrating multiple automatic double-throw transfer switches providing varying degrees of emergency and standby power Automatic Transfer Switches ABB's Automatic transfer switches (ATS) cover a variety of applications such as: Data Centers and Healthcare.

Such an arrangement, using multiple automatic transfer switches, is shown in Figure 3. It is sometimes referred to as a “main-tie-main” configuration.Īvailability of multiple utility service systems can be improved by adding a standby engine-generator set capable of supplying the more critical load. The arrangement shown in Figure 2 can represent the secondary of a double-ended substation configuration or a primary service. Multiple transfer devices of lower current rating, each supplying a part of the load, may be used rather than one transfer device for the entire load.

AUTOMATIC TRANSFER SWITCH GENERATOR

ABB offers automatic transfer switches (ATS), from 40 to 1600 Amperes in range. This mains to generator automatic changeover switch seamlessly detects a power outage and start your standby generator. It may be desirable to locate transfer devices close to the load and have the operation of the transfer devices independent of overcurrent protection. Automatic switching between power sources. An electrical or mechanical failure of the electric power distribution system within the building.An overload or fault tripping out a circuit.An open circuit within the building ( load side of the incoming service).The arrangement shown in Figure 2 only provides protection against failure of the normal utility service.Ĭontinuity of power to critical loads can also be disrupted by: Figure 2 – Two-utility source system in which any two circuit breakers can be closed Under these conditions, the cost of an extra circuit breaker can rarely be justified. They have the features and functionality that makes them suitable for diverse applications: industrial plants, docks, airports and data centers. In this case, the tie circuit breaker can be eliminated and the two circuit breakers act as a transfer device ( sometimes called a transfer pair). Automatic transfer switches Automatic switching between power sources ABB offers automatic transfer switches (ATS), from 40 to 1600 Amperes in range. If the utility will not permit dual or totalized metering, the two sources must be connected together to provide a common metering point and then connected to the distribution switchboard. If the supplying utility will not permit power to be taken from both sources, the control system must be arranged so that the circuit breaker on the normal source is closed, the tie circuit breaker is closed, and the emergency-source circuit breaker is open. Automatic Transfer Switches (ATS) are typically used to provide resilience for smaller uninterruptible power supplies (below 10 kVA) that cant operate in.