[Features] ◆ be constant, constant adjustment range: 0- maximum continuously adjustable; ◆ be constant, constant adjustment range: 0- maximum continuously adjustable; ◆ variable frequency, frequency adjustment range: 45HZ- 500HZ, pitches 0.1HZ (0.01HZ can be customized); ◆ constant current, constant voltage use, automatic cross conversion, taking into account the characteristics of maintaining control and protection; ◆ provide RMS voltage, RMS current, active power, frequency , power factor measurement; ◆ digital keyboard input, easy to use, high accuracy; ◆ The machine first lesson perform 30 different sets of current, voltage, frequency, rise time, run time, and do it one million cycles test ; ◆ has nine sets of data storage function, easy to use when you call; ◆ has RS232C, RS485 communication function; ◆ provides embedded PC, intelligent monitoring system; ◆ with overvoltage, overcurrent, short circuit protection; ◆ lightning protection, isolation interference, fast response time. [Application] The power supply is stable and reliable, easy to expand capacity, high efficiency, no waveform distortion, stable voltage and current regulation, applicable to a wide range of load, long-term continuous operation, can withstand instantaneous overload, and has undervoltage, overvoltage protection and other functions, but also has a small size, light weight, easy installation, and can be widely used in the detection of AC solenoid, industrial automation, military, railway, research, teaching, testing, measurement equipment needs constant use .