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China LMS1-N Automatic Transfer Switch 250A ATS - Reliable Suppliers & Factory Direct Solutions
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.
Model Description
Main Technical Parameters
| Model Name | LMS1-32N | LMS1-63N | LMS1-125N | LMS1-250N | LMS1-400N | LMS1-630N | ||||||||
| Rated insulation voltage (Ui) | AC 690V | |||||||||||||
| Rated working voltage (Ue) | AC 400V | |||||||||||||
| Rated working current (Ie) | 16, 20, 25, 32 | 40, 53, 63 | 80, 100, 125 | 160, 180, 200, 225, 250 | 315, 400 | 500, 630 | ||||||||
| Rated concussion withstand voltage (Uimp) | 8kV | |||||||||||||
| Rated control current (A) | 5 | 7 | ||||||||||||
| Using category | AC-33B | |||||||||||||
| Kind of throw | Double throw | |||||||||||||
| Poles | 2P | 3P | 4P | 2P | 3P | 4P | 2P | 3P | 4P | 3P / 4P | ||||
| Service life | Mechanical | 20,000 | 17,000 | |||||||||||
| Electric | 6,000 | 6,000 | ||||||||||||
LMS1-N Type ATS Electrical Schematic Diagram
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Note: In the absence of a dedicated ATS controller, the two power sources in the controller circuit can not be simultaneously energized.
Structure and Mounting Dimensions
Frequently Asked Questions
QWhat is the rated insulation voltage (Ui) of the LMS1-N series ATS?
The rated insulation voltage (Ui) for all models in the LMS1-N series — including LMS1-32N, LMS1-63N, LMS1-125N, LMS1-250N, LMS1-400N, and LMS1-630N — is AC 690V.
QWhat pole configurations are available for the LMS1-N series?
The LMS1-32N and LMS1-63N models are available in 2P, 3P, and 4P configurations. The LMS1-125N also supports 2P, 3P, and 4P. The LMS1-250N, LMS1-400N, and LMS1-630N are available in 3P and 4P configurations.
QWhat is the service life of the LMS1-N automatic transfer switch?
For the LMS1-32N to LMS1-250N models, the mechanical service life is 20,000 operations and the electrical service life is 6,000 operations. For the LMS1-400N and LMS1-630N, the mechanical life is 17,000 operations and the electrical life is 6,000 operations.
QWhat is the using category of the LMS1-N series ATS?
The LMS1-N series automatic transfer switches are classified under using category AC-33B, which is suitable for switching of motor loads or mixed loads including resistance, inductance, and motor loads.
QCan the two power sources in the controller circuit be energized simultaneously?
No. In the absence of a dedicated ATS controller, the two power sources in the controller circuit must not be simultaneously energized. This is a critical safety requirement to prevent electrical faults and ensure reliable switching operation.
QWhat is the rated impulse withstand voltage (Uimp) for the LMS1-N series?
The rated impulse withstand voltage (Uimp) for all models in the LMS1-N series is 8kV, ensuring reliable protection against transient overvoltages in the electrical system.