This model automatic switch is a special product developed by our company,which matches the GB/T14048.11 standard, and also matches the "Code for Fire Prevention of High-rise Civil Buildings", "Emergency Lighting Design Guide"ect. The components and accessory of the product though strict aging screening, and the finished product can be delivered after passing the confirmation inspection. Therefore, the reliability and safety of the product are guaranteed.It is suitable for rated operating voltage AC400V power distribution system.Under the control of the controller, the transfer switch can quickly change the load from the normal power supply to the standby power supply (the standby power supply must be normal at this time) when the power supply has failure condition , such as loss of phase, over voltage or under voltage. The user can also make the load in an intermediate position when needed, so that the load is neither connected to the normal power supply nor to the standby power supply. This product is mainly used for the first and second level load stipulated by the state, widely used in fire posts and telecommunications,hospitals, hotels, urban rail transit, high-rise buildings, industrial assembly lines, television stations and other places requiring continuous power supply.It is used for the first and second level load stipulated by the state, and

is widely used in fire posts and telecommunications, hospitals and hotel,urban rail transit, high-rise buildings, industrial assembly lines, television stations and other fields requiring continuous power supply ect. The backup power supply can be a power grid, a self-starting generator set, a battery pack, etc.

□ Ambient air temperature: temperature is from -5 ° C to +40 ° C, and the 24-hour average temperature will do not exceed +35° C. Users with air temperatures above +40 ° C or below -5 ° C should consult with the manufacturer.

□ Maximum temperature of atmospheric humidity: when the degree is +40℃,the relative humidity doesn’t exceed 50%, the maximum phase of the month humidity is 90%, resistant to the influence of humid air at sea, and can allow higher relative temperatures at lower temperatures Humidity, special measures should be taken for condensation occasionally caused by temperature changes.

□ Installation height: The altitude of the installation site does not exceed 2000 meters. When it used over 2000 meters , it should consider that the dielectric strength and cooling effect of the air are reduced, please consult with the manufacturer.

□ Installation inclination: The product should be fixed in the cabinet, the maximum inclination is ±22.5°.

□ Installation category: Installation category IV.

□ Pollution level: The environmental pollution level of the installation site is level 3.

The method of manual operation and precautions,it must be noticed that the switch should cut off all external power by professional worker when the switch needs to inspection and maintenance. In order to keep the dual automatic transfer switch performance and stay in good condition，the first maintenance should be done within one year after installation .Regular maintenance should be done at least once a year.