Model No: YSQ2

YSQ2 Dual Power Automatic Transfer Switch

This smart dual-power transfer switch is made up of two main components: a core device body and an intelligent automatic controller. The core body is mounted on a single metal plate and contains two circuit breakers with electric operators (specific models are detailed in the technical parameters), along with auxiliary alarm contacts, mechanical and electrical interlocks, fuses, and wiring terminals.
The sophisticated controller, which uses a modern single-chip microcomputer, integrates various modules, including output modules. It connects to the main body via a shielded cable and a specialized aviation plug, with the cable measuring no more than 2 meters long. This setup creates a complete intelligent control system powered by a 220V, 50Hz supply. The system's dual mechanical and electrical interlocking ensures secure and dependable power, and it can automatically switch between three-phase three-wire and three-phase four-wire power sources.

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Description

Load's Power Source	System Preset State	Current Source Status	Other Source Status	System Switches To	On Source Failure, Switch To	Supplying Source Switches To	Mains Request Signal	On Firefighting 24V Activation
Load's Power Source	System Preset State	Current Source Status	Other Source Status	System Switches To	On Source Failure, Switch To	Supplying Source Switches To	Mains Request Signal	Start	Stop
Mains	Manual Mains	Normal	Normal	Mains	Dual Off	Mains	Inactive	Dual Off	Mains
Mains	Manual Mains	Normal	Abnormal	Mains	Dual Off	Mains	Active	Dual Off	Mains
Mains	Auto-Restore	Normal	Normal	Mains	Backup	Mains	Inactive	Dual Off	Mains
Mains	Auto-Restore	Normal	Abnormal	Mains	Dual Off	Mains	Active	Dual Off	Mains
Mains	Manual-Restore	Normal	Normal	Mains	Backup	Mains	Inactive	Dual Off	Backup
Mains	Manual-Restore	Normal	Abnormal	Mains	Dual Off	Mains	Active	Dual Off	Mains
Backup	Manual Backup	Normal	Normal	Mains	Dual Off	Mains	Inactive	Dual Off	Mains
Backup	Manual Backup	Normal	Abnormal	Mains	Dual Off	Mains	Inactive	Dual Off	Backup
Backup	Auto-Restore Backup	Normal	Normal	Mains	Backup	Mains	Inactive	Dual Off	Mains
Backup	Auto-Restore Backup	Normal	Abnormal	Mains	Dual Off	Mains	Inactive	Dual Off	Backup
Backup	Manual-Restore Backup	Normal	Normal	Mains	Dual Off	Mains	Inactive	Dual Off	Backup
Backup	Manual-Restore Backup	Normal	Abnormal	Mains	Dual Off	Mains	Inactive	Dual Off	Mains

Power Status Monitoring: The Core of the ATS

Power status monitoring is one of the most crucial functions of an Automatic Transfer Switch (ATS). It’s this continuous and precise power status monitoring that allows the ATS to ensure uninterrupted power supply. The ATS performs power status monitoring in real-time, and as soon as it detects any irregularity in the main power source, it immediately initiates the power transfer process. This automated power transfer, driven by comprehensive power status monitoring, is the central advantage of the ATS for safeguarding your electrical supply. When power status monitoring confirms the main power is stable again, the ATS will perform another power transfer to smoothly switch the load back, completing the entire power transfer cycle.

Power Transfer: The Two Operational Modes of the ATS

Power transfer is the primary task of the ATS, and its manual and automatic modes offer two ways to control this power transfer. In automatic mode, the ATS relies completely on power status monitoring to handle all power transfer decisions. This is the most common mode for the ATS, providing the highest level of reliability. However, for maintenance or testing, a user can enter manual mode to directly control the power transfer process. Even without relying on constant power status monitoring, this manual mode ensures a smooth power transfer. This flexible control over power transfer is a key design feature of the ATS.

Power Status Monitoring and Safety Assurance

Power status monitoring and safety are closely linked in the design of the ATS. By monitoring the power status monitoring of both sources, the ATS can effectively prevent short circuits. During every power transfer, the ATS’s dual interlock protection activates, ensuring the two power sources are never connected at the same time. This ATS is more than just a simple power transfer device; it's a comprehensive solution that integrates power status monitoring, safety interlocks, and multiple operational modes to provide a reliable and robust power supply.

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