1.Scope of application
The double-source automatic changeover switchgear (hereinafter referred to as the changeover switch) is suitable for 50Hz or 60Hz, rated working voltage of 400V, and rated working current of 63A and below.
It can selectively switch two power sources as needed. The product has short circuit, overload, and undervoltage/loss of voltage protection functions, as well as fire protection, dual disconnection, output closing signal functions.
It is particularly suitable for the installation and use of lighting circuits in office buildings, shopping malls, banks, stations, hospitals, and high-rise buildings that fire protection.
The product meets the GB/T14048.11 standard and has obtained two patents, one for utility model and one for design
2、Model and definition
3、Normal working conditions
3.1 The upper limit of the ambient air temperature shall not exceed 40 ℃, the lower limit shall exceed - 5 ℃, and the average value for 24h shall not exceed 35 ℃.
3.2 The altitude of the installation location shall exceed 2000 m.
3.3 The relative humidity of the atmosphere shall not exceed 50% when the surrounding air temperature is 40 , and may be higher at lower temperatures; the average minimum temperature of the month with the highest humidity is 25 ℃, the average maximum relative humidity is 9%, and special measures shall be taken into account for the frost formed on the surface of the product due to the change of humidity.
3.5 The operating location shall be free from severe vibration and impact, from corrosive and destructive gases to insulation, from severe dust, fromive particles and explosive hazardous substances, and from strong electromagnetic interference.
4.Product features
4.1 The structure is reasonable, the volume is minimum, the appearance is beautiful and it is equipped with a protective cover, making the power supply safer and more reliable.
4.2 The protection function is complete, with short circuit, overload, phase loss and low voltage protection.
4.3 It is connected with EPS fire power supply interface, and it can reliably separate at a long distance with DC12-24.
4.4 It operates noiselessly, saves energy, and reduces consumption. It is easy to install, operate, and has reliable and stable performance.
5.Product
5.1 The changeover switch is composed of two miniature circuit breakers and an electric motor and mechanical rotation device, and the two power supplies are detected through the controller. the circuit is abnormal, the controller makes a logical judgment based on the detection results, and drives the operating mechanism to open or close according to the controller's instructions, thus ensuring the load is powered safely and reliably.
5.2 Connecting and disconnecting capability
5.3 Rated short-circuit breaking capacity: 3kA
5.4 Rated short-circuit making capacity: 3A
5.5 Changeover time: ≤3s
5.6 The control voltage of the changeover switch is AC230V
5.7 The life of the changeover switch (common and spare changeover) is 3000 times, and the electrical life is 1500 times
5.8 Ins voltage of conversion: U = 500V
5.9 Rated working current: 10A, 16A, 20A, 5A, 32A, 40A, 50A, 63A.
5.10 Generally, the changeover switch has the of automatic switching and automatic recovery, and the principle of common power supply priority. If the changeover switch is needed for automatic switching but not automatic recovery in special occasions, the user the manufacturer negotiate and customize it. If other functions are also needed, they will communicate and customize it.
