Executive standard: DL/T849.6-2004 the 
 The equipment is mainly used in the following areas: 
 AC withstand voltage test of 1,6 kV-500kV high voltage XLPE cable 
 2, a variety of generator AC voltage test 
 3,10-500kV switchgear, GIS and SF6 switch AC voltage test 
 4,6 kV-500kV transformer frequency voltage withstand test 
 Other high-voltage power equipment such as bus, casing, Transformers AC voltage test. 
 The equipment from the power inverter, excitation transformers, reactors, voltage divider. 
 Features: 
 1) Internal controls, embedded touch screen operation function has been optimized, simple operation 
 2) automatic sweep to find the resonance point frequency range 20-300Hz, you can manually set the sweep range, sweep took three minutes (frequency sweep). Frequency resolution of 0.1Hz 
 3) Automatic test, the user can set the test program, the system automatically set the program to complete the testing process 
 4) Automatic test, automatic tracking of the resonant state of the system, when the resonant state changes, more than the set area, the system automatically tracking the resonance point in the whole process to ensure that the output state of the system working in optimal FM plotting frequency voltage curve . 
 5) Pressure automatic tracking voltage, voltage fluctuations, automatically adjust the voltage to the target, by the user according to the experimental situation 
 6) pressure output protection: the regulator process, strictly ensure the voltage output of inverter power supply is not 
 7) The software is run through rigorous simulation test, run a safe, stable, reliable 
 8) test data is automatically saved, data query function, the previous test data queries based on the query conditions; 
 9) LCD screen to display the power supply voltage and current; high voltage output frequency, voltage, current 
 10) protection: with power, overcurrent, overvoltage and flashover protection function; 
 a) the over-voltage protection: You can manually set the value of over-voltage protection; when the output voltage of the entire device to protect the setting value, the automatic removal of the entire device 
 b) The over-current protection: You can manually set the value of over-current protection; automatic removal of the entire device when the output current of the entire device to protect the setting value, 
 c) breakdown protection: discharge or flashover protection features, automatic removal of the entire device when the high pressure side of the ground flashover. Will not damage the test equipment and personal, variable frequency power electronic components will not breakdown 
 d) power protection: Testing a power outage, the device can quickly protect 
 11) the variable frequency power supply of the internal structure and its components in the normal road and rail transport, the relative positions of the same, no damage, fasteners are not loose 
 Technical parameters: 
 Frequency adjustment range 30-300Hz input capacity of 2.5-200kVA 
 Waveform distortion ≦ 1% output voltage 18-500kV 
 Frequency adjustment 0.1Hz output power of the fineness of 36-500kVA 
 Input voltage three-phase 380V / single phase 220V output current 1-10A 
 Address: http://www.whhdgc.com/cpshow.asp?Product_ID=94