The LVATSE-1 dual-power rapid transfer device independently developed by Langsheng Company is a low-voltage automatic transfer switch capable of automatically identifying, analyzing, and executing operations. It enables seamless rapid switching between the main power and backup power in the power supply system. Users can set the switching mode based on the characteristics of the working power and backup power. The dual-power switch uses a molded case circuit breaker with protective functions. The device can complete automatic or manual rapid switching between the main and backup power within 20ms, ensuring high reliability. It is particularly suitable for critical users and power supply systems where unexpected power outages must be avoided.
The dual-power system is composed of three main parts: molded case circuit breakers, operating mechanisms, and control systems.
- Two sets of molded case circuit breakers are controlled simultaneously by electromagnetic transmission mechanisms, featuring both electrical and mechanical interlocking functions to ensure safe and reliable operation.
- The molded case circuit breakers are directly connected to the electromagnetic transmission mechanisms, resulting in a simple and practical structure that guarantees high reliability of the product.
- The operating mechanism employs gear and rack mechanical transmission, ensuring independent positioning of the opening and closing operations for the two sets of circuit breakers.
- The design of the power supply input terminals and the common output terminals is rational, facilitating easy installation and wiring, while the structural design is convenient for maintenance.
- [Note: The fifth point appears incomplete in the original input. If additional details are available, they should be incorporated for completeness.]
This design ensures rapid, safe, and reliable power switching, making it ideal for critical applications where uninterrupted power supply is essential.
- GB 14048.1-2006 Low-voltage switchgear and controlgear - Part 1: General rules
- GB 14048.2-2006 Low-voltage switchgear and controlgear - Low-voltage circuit-breakers
- GB/T 14048.11-2016 Low-voltage switchgear and controlgear - Part 6-1: Multi-functional equipment - Transfer switches
- JB/T 11682-2013 Reliability test methods for automatic transfer switches
- Rated voltage: AC 220/380V
- Rated current: 16~630A
- Rated frequency: 50Hz
- Rated ultimate short-circuit breaking capacity: 55, 75, 100kA
- Rated service short-circuit breaking capacity: 45, 55, 70, 80kA
- Mechanical life: Not less than 5000 operations
- Control circuit charging time: ≤15s
- Dual-power switching time: <20ms
- Altitude: Not exceeding 2000m.
- Ambient air temperature: Not exceeding +40°C; the average value measured within 24 hours does not exceed +35°C. The minimum ambient air temperature is -10°C.
- Atmospheric conditions: The relative humidity at an ambient air temperature of +40°C does not exceed 50%. Special measures should be taken to address occasional condensation caused by temperature fluctuations.
- Environmental requirements: No explosive hazard environments, no exposure to rain or snow; no areas with severe vibrations or strong electromagnetic interference.
- Pollution degree: Pollution degree 3.
