Difference Between an Automatic Transfer Switch (ATS) and Switchgear
Switching and Distribution
Diesel generators as emergency, primary or continuous backup power are common in industrial Settings. The electricity generated by the generators is distributed throughout the facility.
But some industry only need for emergency lighting and other emergency generator power supply system, you need to use more advanced distribution system.
Smaller and general power generation and distribution system include:
- The generator
- Automatic change over switch
- switchgear
- The circuit breaker
Large and more complete power generation and distribution systems include:
- The generator
- Automatic change over switch
- Automatic and manual switchgear (for low, medium or high voltage)
- Uninterruptible power supply - from small power supply to the battery pack and rotary UPS system
- Electrical components that can be accessed remotely
- Remote alarm and monitoring ability
ATS Automatic transfer switch
Automatic transfer switch configuration example
When the mains power is off, the automatic transfer switch (ATS) will give the generator a start signal. When the generator starts normally, the ATS switches to the emergency power supply (the line on which the generator generates power).
Single generator configuration
The circuit breaker remains closed until tripping due to overload or short circuit.
Power failure:
- The automatic transfer switch transmits the start signal to the generator.
- When the generator is powered normally, the ATS switches the emergency power to the load.
- As soon as the mains recovery, ATS will switch to the mains and generator outage.
Generator combination configuration
Some power points if the distance is too far, in order to prevent the failure of the single motor when the power is off. These sites often use multiple generators.
Even if parallel software is installed in the generator control panel, the generator installation configuration does not allow parallel operation. When the mains fail, each individual building ATS performs its duties and switches to emergency power before power is restored. Only buildings with faulty public power will have generators turn on.
As an ATS developer, we offer a wide range of ATS products. For more technical details on transfer switch technology, NEC requirements, maintaining transfer switches, etc., please contact us.
Switchgear
Switchgear is used in power stations. This includes the knife switch on the panel. However, with the escalation of current and voltage requirements, the open tool gate concept becomes a safety hazard.
Residential emergency generator using circuit breaker as a switching device. Automatic transfer switches supply power to the home when the power is off. This is the simplest example of a switchgear application.
The next level switchgear is used in industries without mission-critical power requirements. Power is usually supplied to individually specified circuit breakers. Many of these styles of circuit breakers are equipped with an LED to indicate the power supply. The systems were custom-designed by power engineers for the facility. Large installations with critical power requirements may have a control room.
The control room is the central hub of the power distribution. Multiple emergency generators can be connected in parallel and placed online in case of power outages or complete outages. Switchboards may be high voltage and have sub-panels equipped with step-down transformers.Each facility provides different requirements in terms of emergency backup power requirements. Depending on the type of system required, switchgear requirements become more complex.
If you have any other questions about the ATS or switchgear requirements for the backup power system, please contact us immediately.