The LVATS-E1 dual-power automatic transfer switch, independently developed by Langsung, is a low-voltage transfer switching device capable of automatic rapid identification, analysis, judgment, and execution. It enables seamless and rapid switching between the main power supply and the backup power supply in a power distribution system.
Users can configure the switching mode based on the characteristics of the primary and backup power sources. The switch utilizes molded case circuit breakers with built-in protection functions, and can complete automatic or manual switching between main and backup power within 20ms. It offers high reliability and is particularly suitable for critical facilities and power systems where unexpected power loss is unacceptable.
The dual-power transfer switch consists of three main components: molded case circuit breakers, an electromagnetic operating mechanism, and a control system.
- Two sets of molded case circuit breakers are independently controlled by electromagnetic drive mechanisms with electrical and mechanical interlocking, ensuring safe and reliable operation.
- The molded case circuit breakers are directly coupled with the electromagnetic drive mechanism, providing a simple and practical structure that ensures high product reliability.
- The operating mechanism uses rack-and-pinion mechanical transmission, ensuring independent open/close positions for both circuit breakers.
- The dual power input terminals and common output terminals are ergonomically designed for easy wiring installation and convenient maintenance access.
- GB/T14048.1-2023 Low-Voltage Switchgear and Controlgear – Part 1: General Rules;
- GB/T14048.2-2020 Low-Voltage Switchgear and Controlgear – Part 2: Circuit Breakers (MCCB, MCB, RCCB);
- GB/T14048.3-2017 Low-Voltage Switchgear and Controlgear – Part 3: Switches, Disconnectors, Switch-Disconnectors and Fuse-Combination Units;
- GB/T14048.5-2017 Low-Voltage Switchgear and Controlgear – Part 5-1: Control Circuit Devices and Switching Elements.
- Rated voltage: AC 220/380V;
- Rated current: 16–630A;
- Rated frequency: 50Hz;
- Rated ultimate short-circuit breaking capacity: 55kA, 75kA, 100kA;
- Rated service short-circuit breaking capacity: 45kA, 55kA, 70kA, 80kA;
- Mechanical life: ≥5000 operations;
- Control circuit charging time: ≤15s;
- Transfer switching time: <20ms.
- Altitude: ≤2000m;
- Ambient air temperature: ≤+40℃, with a 24-hour average ≤35℃; minimum ambient temperature: -10℃;
- Atmospheric conditions: Relative humidity ≤50% at +40℃; special measures required for occasional condensation due to temperature variations;
- Environment: No explosive atmospheres, no exposure to rain or snow, no severe vibration, no strong electromagnetic interference;
- Pollution degree: Class III.
