S-500 Power Cable Fault rangefinder for precise range of the type of high resistance, flashover, break, low resistance power cable fault. International advanced electronic testing technology and microcontroller technology, combined with the low pressure pulse reflection and pulse current of the two testing methods, 
 Low-voltage pulse reflection method for low resistance and disconnection of cable fault location, as well as the measurement of a variety of cable lengths or wave velocity. Pulse current method is divided into the impact of high-voltage flashover and DC high voltage flashover two test methods, respectively, for the cable of high resistance and flashover fault location. 

 The main features 
 ● high degree of intelligence. Point of failure can automatically determine whether the discharge, and automatically calculates the distance to fault. 
 ● the use of current sensors measure flow through the earth's pulse current signal, resistance and capacitance voltage divider to measure the pulse voltage signal compared with the traditional flash Tester, the wiring is simple and convenient; and instruments and high-voltage circuit from the electrical isolation security. 
 ● Chinese menu, easy to learn and use. 
 ● 20 test waveforms can be permanently saved, not lost after shutdown to replace the printer function. Using the clock mark, easy to look at the waveform file. 
 ● the use of large-screen LCD with backlight. Buttons to adjust the LCD display brightness. 
 ● the use of rechargeable nickel-metal hydride battery, automatic charge management. 
 Technical indicators 
 ● Maximum test distance: 10km 
 ● test accuracy: 
 Test distance of less than 1Km, the test error is not greater than ± 1m 
 Test distance greater than 1Km, the test error is less than 0.5% 
 ● test blind: less than 10m 
 ● Charging time is about 5 hours 
 ● continuous work for longer than 10 hours 
 ● Power consumption: 2W 
 ● the use of ambient temperature: -10 ° C - +40 ° C. 
 ● Dimension: 235 × 190 × 110, weight: 2Kg