Air-source heat pump water heater internal structure consists of four core components: a compressor, Zhengzhou low voltage switch cabinet role, condenser, expansion valve, low voltage switch cabinet factory in Zhengzhou, the evaporator refrigerant composition as well as the temperature of the carrier. For now developed the environmentally friendly refrigerant refrigerant compressor comprising: C02, R134a, R410A, R417A refrigerant compressors, etc.. Water temperature up to 80 ℃, 90 ℃ Voltage Switchgear can even reach five anti: 1, high voltage switchgear vacuum circuit breaker inside the car after closing the test position, the car can not enter the work breaker position. (To prevent closing with load) 2, High Voltage Switchgear ground knife within close position, the car can not enter the circuit breaker closing. (With a ground wire to prevent closing) 3, high voltage switchgear vacuum circuit breaker in the closing work inside, low voltage, enclosure and the back door with a mechanical lock on the door earthing. (To prevent mistakenly charged interval) .4, vacuum circuit breakers high voltage switchgear at work within the closing, ground knife can not be put together. (Prevent the charged closing earthing wire) 5, the vacuum circuit breaker at work within high voltage switchgear closing operation, you can not quit working position car breaker. (To prevent negative Hera Knife) Zhengzhou, where low voltage switch cabinet cheap | Xi Connaught Electrical and Mechanical | low voltage provided by the Henan learning Connaught Electrical and Mechanical Equipment Co., Henan Xi Connaught Electrical Equipment Co. (www.hnxinuo.com) located in the south China city of Zhengzhou Area 6B 6B-3-342. Scraps and development in the wave of market economy, the current study Connaught Electrical and Mechanical has a high profile in the electronics, electrical products processing, enjoys a good reputation. Xi Connaught Electrical and Mechanical made whole network business alliance certification, marking our service and management level has reached a new height. Xi Connaught Electrical and Mechanical staff is willing to joint development with all people a better future.