Two-speed fan control principle: The Company two-speed fan motors are equipped with two-speed electrically stator windings △ / XY (or Y / XY), speed connections by changing the basic principles of the stator windings to change the number of poles in order to achieve the purpose of speed, low-speed operation △ (or Y) mode, exhaust fan installed, high-speed operation of XY mode. Wind the electrical control box with circuit breaker, protection devices and other electrical components, exhaust fan service, you must press the correct rational use of turbine rated capacity models: HIF-II (double speed) series fire exhaust fan, high temperature motor, Qingzhen exhaust fan, totally enclosed motor built with high special motor cooling system efficiency, low noise, reasonable structure, small size, easy installation application: high-rise buildings, drying room, underground garage ventilation or high-temperature exhaust. Continuous operation at 300 degrees for 60 minutes or more high temperature, medium temperature conditions of continuous operation at 100 degrees 20 hours / times without damage, fire is the ideal necessary equipment. Two-speed fan control principle: The Company two-speed fan motors are equipped with two-speed electrically stator windings △ / XY (or Y / XY), speed connections by changing the basic principles of the stator windings to change the number of poles in order to achieve the purpose of speed, exhaust fan applications, low-speed operation △ (or Y) mode, high-speed operation of XY mode. Wind the electrical control box with circuit breaker, protection devices and other electrical components must be properly rational use of rated capacity by fan exhaust fan qingzhen _ _ Chenyu air conditioning exhaust fan quotes provided by Wu Cheng Chen-yu air-conditioning Limited. Yu Chen Qingzhen exhaust fan _ _ air conditioning exhaust fan offer is wucheng Chenyu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: sand manager.