Safety Tester
Impulse Winding Tester

7713  is a 2-channel 10KV  impulse winding tester and able to measure inductance down to 0.5uH as well as magnify high-frequency harmonics to prevent shorts between the layers of windings. Mild corona occurring between coils would create harmonics with small amplitude and high frequency (>10MHz) which cannot be detected by a regular impulse winding tester that can only observe mild amplitude without actually identifying the fault. MICROTEST 7713 deploys “High-frequency harmonics analysis HARM “technique to magnify high-frequency harmonics then display them on screen then identify each mild discharge between layers and ensure the quality of each component coil.

  • Measure the lowest inductance to 0.5uH
  • HARM analysis and HFLT analysis
  • High voltage calibration
  • programmable impulse voltage, low-energy detection without damaging the DUT
  • Built-in storage 200 sets testing waveform
  • Storage golden sample (DUT) standard waveform in the instrument, and compare with the other sample waveform
  • Provides 5 waveform comparison: total area comparison, differential area comparison, wave comparison, futter and corona 
  • Key lock function to prevent operators from accidentally touching keys
  • Support RS-232, remote and printer interfaces

Measurement Data

Channel 2
Impulse Voltage (programmable) 200V ~ 10000V
Lowest inductance  0.5uH
Impulse Voltage Accuracy


Measurement time  50mS


PLC Remote Control Test, Abort
PLC Remote Output Signal Pass, Fail, HV output, Testing
Built-in Storage 200 sets testing waveform
Interface RS-232、Remote、Printer
Power Supply Voltage 98 ~ 132Vac or 192 ~ 264Vac
Frequency 50/60Hz ±5%
Display 320*240, 5.7" dot-matrix 
Environment Temperature : 10 ~ 40 , Humidity : 20 ~ 90%RH
Dimension (W*H*D) 435x133x455 mm
Weight   8 Kg

Measurement Items



Total Area

Area size comparison

Waveform comparison




Include Inverters, Power Inductors, Transformers, Motors, Wave Filters, Capacitors and Wires

No relevant audio and video files

Standard Accessories

  • Power Cord
  • User Manual
  • HV Test Cable
  • D-Sub footswitch

Optional Accessories

  • RS-232cable
  • Remote Cable