The common types of automatic transfer switches (ATS) mainly include the following
1. Classification by functional level
PC class dual power automatic transfer switch
Features: This switch can be switched on and carry rated current, but is not used to break short circuit current. It usually adopts the integrated structure design, which has the advantages of fast conversion speed and simple structure.
Application scenario: Applicable to scenarios that require high conversion time, such as data centers and hospital operating rooms.
CB class dual power automatic transfer switch
Features: It can not only switch on and carry rated current, but also break short circuit current. This type of switch is usually composed of circuit breakers and controllers, and has a high short-circuit protection ability.
Application scenario: Applicable to situations that require short circuit protection, such as industrial production lines and commercial buildings.
Second, according to the structure of the form of classification
Integrated dual power automatic transfer switch
Features: The switch body and the controller are integrated together to form a whole. This design is compact, easy to install and use, suitable for some space limited occasions.
Split type dual power automatic transfer switch
Features: The switch body and the controller are separated and connected by cable or other connection methods. This structure is easy to install and maintain, and can be flexibly arranged according to actual needs.
Three, according to the mode of operation classification
Manual/automatic dual power switch
Features: With manual and automatic switching function, users can choose to manually switch the power supply according to the need, or let the switch automatically switch the power supply.
Application scenario: Suitable for flexible power switching or maintenance.
Remote control dual power automatic transfer switch
Function features: Support remote control function, can be achieved by remote signal or control system to switch the power operation, suitable for remote monitoring and management occasions.
Application scenario: Remote data center, smart grid, etc.
Classification by transitional form (based on some specific applications)
Open transition ATS
Features: A system that can handle brief power outages when switching between public power and local backup power. This delay is usually less than a second, but allows for a secure transfer.
Application scenario: Applicable to situations where the power is interrupted for a short time.
Closed transition ATS
Features: Has an internal system that allows two power supplies to be turned on simultaneously and allows seamless switching to maintain safety standards.
Application scenario: It is used in Spaces where even short power outages cannot be tolerated, such as operating rooms, data centers and other critical facilities.
Soft load transfer switch
Features: Similar to closed conversion ATS, but can adjust its handling load according to the situation.
Application scenario: This method is applicable to scenarios where the power switchover needs to be dynamically adjusted according to the load.
Bypass isolation ATS
Features: The most complex yet highly functional ATS system, with many specifications and standards to govern its equipment and its use.
Application scenarios: Given the complexity and sensitivity of enterprises that require this level of protection, such as large data centers, critical industrial facilities, etc.