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China ATS Cabinet - Automatic Transfer Switch from Leading Suppliers & Factory for Reliable Power Solutions

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Our company is a leading supplier in China, specializing in the manufacturing of dual power supply systems and automatic control cabinets. We adhere to the highest standards in every stage of production, from raw material selection to the final product assembly. Our factory is equipped with advanced technology and staffed by an experienced technical team, ensuring precise quality control. With our commitment to professionalism and innovation, we consistently deliver high-quality products that provide a reliable guarantee for the safe and stable operation of electrical systems.

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    LMS1-LA Series Manual
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    Product Details

    LMS1-LA as our ingenuity research and development of a new generation of dual power automatic transfer switch, in the performance and technology to achieve a major breakthrough. The product provides 63A, 125A, 250A, 400A, 630A and other rated current specifications, whether it is the continuous operation of massive servers in data centers, or the uninterrupted power supply of life support equipment in hospital ICU wards, the stable operation of elevator and fire fighting system in high-rise buildings can fully meet the power demand in different scenarios. ​

    Its switching speed can be called industry-leading, switching time only 10ms-50ms, with millisecond response speed to complete power conversion. In the data center, the LMS1-LA automatic transfer switch can switch to the standby power supply in a very short period of time in the face of sudden power failure, avoiding data loss and system collapse caused by momentary power failure; in the hospital environment, the LMS1-LA automatic transfer switch can switch to the standby power supply in a very short period of time, millisecond-level power switching can guarantee the stable operation of precision instruments and first-aid equipment in operating rooms, and escort the safety of patients. When applied to high-rise buildings, fast power changeover ensures smooth parking of elevators, normal operation of fire fighting systems and improved building Factor of safety. ​
    The transfer switch is composed of a high performance excitation contactor and an intelligent controller. When working, the electromagnetic coil produces a strong and stable attraction to drive the switching action to ensure the instant completion of power switching. This feature not only effectively guarantees the rapid switching of the power supply when the equipment is powered off, but also realizes the seamless connection of the power supply, which provides a reliable and solid power guarantee for the equipment with strict requirements for power continuity. ​

    Configuration of Dual Power Supply Cabinet
    1 Automatic Transfer Switch (ATS)

    Commonly, there are PC type and CB type. The PC type transfer switch features a simple structure and fast switching speed, making it suitable for scenarios with high requirements for switching time. The CB type transfer switch has functions of overload and short-circuit protection, and it is applicable to situations where the load needs to be protected.

    2 Control Circuit & Controller

    The control circuit is responsible for monitoring the power supply status and controlling the operation of the transfer switch. The controller is the core component of the dual-power supply switch, usually adopting microprocessor technology, which has functions of high-precision measurement of power supply parameters and flexible parameter setting.

    Protection Devices
    Overcurrent Protection Device

    When the current in the circuit exceeds the set value, the overcurrent protection device will automatically cut off the circuit to prevent equipment damage due to overcurrent.

    Short-circuit Protection Device

    When a short-circuit fault occurs in the circuit, the short-circuit protection device will act quickly to cut off the circuit and protect the safety of the equipment and the circuit.

    Under-voltage Protection Device

    When the power supply voltage is lower than the set value, the under-voltage protection device will act to prevent the equipment from malfunctioning or being damaged due to under-voltage.

    4 Current Transformers (CTs) and Voltage Transformers (VTs)

    Current transformers are used to measure the current in the circuit, and voltage transformers are used to measure the voltage of the power supply. They transmit the measured current and voltage signals to the controller and the protection device for monitoring and protection purposes.

    5 Circuit Breakers

    The input power supply circuit breaker and the output power supply circuit breaker can automatically cut off the circuit when faults such as overload and short-circuit occur in the circuit, protecting the safety of the equipment and the circuit.

    Auxiliary Equipment
    Indicator Lights

    Including the main power supply indicator light, standby power supply indicator light, main power switch-on indicator light, standby power switch-on indicator light, etc. Different on/off states reflect the power supply and working conditions, making it convenient for personnel to intuitively understand the operating status of the device.

    Operation Buttons

    Used for manually operating the switching of the dual-power supply transfer switch, as well as for debugging and maintaining the equipment.

    Relays

    Used to achieve the conversion and amplification of control signals and to perform logical control of the circuit.

    Frequently Asked Questions
    Q What is the difference between a PC type and a CB type Automatic Transfer Switch (ATS)?
    The PC type ATS features a simpler structure and faster switching speed, making it ideal for applications where minimal transfer time is critical. The CB type ATS includes built-in overload and short-circuit protection functions, making it more suitable for systems where load protection is a priority in addition to power transfer.
    Q What role does the controller play in a dual power supply cabinet?
    The controller is the core component of the dual-power supply switch. It uses microprocessor technology to continuously monitor power supply parameters with high precision, manage the switching logic between main and standby supplies, and allow flexible configuration of operating parameters to suit different application requirements.
    Q How do protection devices safeguard the dual power supply cabinet?
    The cabinet incorporates three key protection devices: the overcurrent protection device cuts the circuit when current exceeds safe limits; the short-circuit protection device responds instantly to fault conditions to isolate damaged sections; and the under-voltage protection device prevents equipment malfunction or damage when supply voltage drops below the set threshold.
    Q What is the purpose of Current Transformers (CTs) and Voltage Transformers (VTs) in the cabinet?
    CTs measure the current flowing through the circuit while VTs measure the supply voltage. Both devices transmit these measured signals to the controller and protection devices, enabling real-time monitoring of electrical parameters and ensuring that protection mechanisms can respond accurately and promptly to any abnormal conditions.
    Q What functions do the indicator lights serve on a dual power supply cabinet?
    Indicator lights provide at-a-glance visibility of the cabinet's operational status. They show whether the main power supply or standby power supply is active, and whether each respective switch is in the on or off state. This allows operators and maintenance personnel to quickly assess the system's condition without requiring additional diagnostic tools.
    Q When are the operation buttons and relays used in a dual power supply cabinet?
    Operation buttons are used for manual control of the transfer switch during routine operation, commissioning, or maintenance tasks. Relays serve as intermediary components that convert and amplify control signals, enabling the logical control of circuit switching sequences and ensuring that the correct commands are executed reliably within the cabinet's control circuit.

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