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China LMS1-SA Series 630A Automatic Transfer Switch ATS - Reliable Suppliers & Factory Direct Quality
LMS1-LA Series Manual
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.
LMS1-SA is suitable for AC 400V and below, the rated frequency is 50Hz. In the power system, the controller and transfer switch can quickly transfer the load from the main power supply to the standby power supply when there is phase loss, overvoltage, etc.
Model Description
Main Technical Parameters
| Model Name | LMS1-63SA | LMS1-125SA | LMS1-250SA | LMS1-630SA | |||||||||
| Rated insulation voltage (Ui) | AC 690V | ||||||||||||
| Rated working voltage (Ue) | AC 230V (2P) / AC 400V | ||||||||||||
| Rated working current (Ie) | 16~63A | 20~125A | 160~250A | 315~630A | |||||||||
| Rated concussion withstand voltage (Uimp) | 8kV | 12kV | 6kV | ||||||||||
| Using category | AC-33B | AC-33iB | |||||||||||
| Kind of throw | Double throw | ||||||||||||
| Wiring method | Front board | ||||||||||||
| Poles | 2P | 3P | 4P | 2P | 3P | 4P | 2P | 3P | 4P | 2P | 3P | 4P | |
| Performance | Rated Short-time withstand current | 5kA | 10kA | 12.6kA | |||||||||
| Rated operating short-circuit breaking capacity | 8kA | 25kA | 30kA | ||||||||||
| Electrical Life / Mechanical Life | 6000 / 20000 | 1000 / 4000 | |||||||||||
Structure and Mounting Dimensions
- Start generator: When fault occurs in the normal power, this port will connect after delaying some time.
- Fire-fighting: Connect the fire-fighting port, double disconnecting light is on, the ATS double disconnect. Remove the connection, push the automatic/manual pushbutton to reset.
- Fire-fighting feedback: When ATS is in double-disconnecting state, the fire-fighting port connects.
- Normal close: When the normal power of ATS is in closing state, closing signal without power is output from this port.
- Standby close: When the standby power of ATS is in closing state, closing signal without power is output from this port.
- Normal earth wire: When ATS are 3 phases, the normal earth wire is connected into this port.
Frequently Asked Questions
Q
What is the rated voltage range for the LMS1-SA automatic transfer switch?
The LMS1-SA is suitable for AC 400V and below, with a rated frequency of 50Hz. The rated working voltage (Ue) is AC 230V for 2P configurations and AC 400V for standard configurations, while the rated insulation voltage (Ui) is AC 690V.
Q
What models are available in the LMS1-SA series and what are their current ranges?
The LMS1-SA series includes four models: LMS1-63SA (16–63A), LMS1-125SA (20–125A), LMS1-250SA (160–250A), and LMS1-630SA (315–630A). Each model is available in 2P, 3P, and 4P pole configurations.
Q
What is the transfer mechanism type of the LMS1-SA switch?
The LMS1-SA series uses a double throw transfer mechanism with front board wiring method. This ensures a reliable and safe transfer between the normal power supply and the standby power supply without any overlap or interruption.
Q
What is the electrical and mechanical life expectancy of the LMS1-SA?
For models LMS1-63SA, LMS1-125SA, and LMS1-250SA, the electrical life is 6,000 operations and the mechanical life is 20,000 operations. For the LMS1-630SA model, the electrical life is 1,000 operations and the mechanical life is 4,000 operations.
Q
How does the fire-fighting function work on the LMS1-SA ATS?
When the fire-fighting port is connected, the double disconnecting indicator light turns on and the ATS enters double disconnect mode. To reset, remove the connection from the fire-fighting port and press the automatic/manual pushbutton. A fire-fighting feedback signal is also output when the ATS is in the double-disconnecting state.
Q
What triggers an automatic transfer in the LMS1-SA system?
The LMS1-SA controller monitors the normal power supply continuously. When a fault such as phase loss or overvoltage is detected, the controller automatically initiates the transfer sequence — first starting the generator via the start generator port after a preset delay, then switching the load to the standby power supply to maintain uninterrupted operation.