1、EC技术的风机，可通过外部的电路脉冲调制或0-10V的电压调节来实现风机的无级变速。

Variable speed control ofEC fan can be realized/achievedvia 0-10Vspeed adjustmentand/or external circuit impulse modulation.

2、EC技术的风机通过180度正弦(SVPWM)矢量控制可实现智能的恒恒流量控制，满足客户的智能需求。转速、恒转矩、

Constanttorque, constant speed and constant airflow of EC fan can befulfilled via180"sine SVPWM(Space Vector PWM) to meet customerneeds.

3、智能的EC风机可支持用户通过485总线实现集中运行控制和监控多达255台风机。

Intelligent EC fan can support users to realize centralized operationcontrol by 485 bus and monitor as many as 255 fans.

4、采用EC技术的风机拥有全面的保护功能;如缺相、浪涌电压、过欠电压，堵转，过电流、温度保护等。EC fan has comprehensive protection function, such as phase failure.overvoltage, underyoltage,locked-rotor, over current and temperature protection.