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CF30-8 Primary Cable Fault Locator - Overview

Haefely Hipotronics CF Series test systems for fault locating of primary cables consist of a DC proof tester, a Burner and a Capacitive Discharge Fault Locator (thumper). These self-contained portable units are rugged, reliable and compact making them ideal for field use, The CF30-8 has a continuously adjustable impulse rate from three (3) to thirty (30) seconds. Test ratings are a 30kV DC proof test voltage, a 50mA burn current and a 0 to 15kV DC capacitance discharge (thumper) voltage.

The units can be used with high voltage coupler (4100 Series) and a time domain reflectometer (TDR) to quickly provide a specific distance to the fault in feet or meters. This combination of equipment can greatly reduce the amount of high voltage (number of thumps) the cable resulting in reduced damage or degradation to the cable under test.

For additional pinpointing the FLASH PHONE (H-FLASH) acoustic detector can be used in conjunction with the C30-8 to pinpoint the exact underground location. While the CF "thumps" the cable the user "listens" to the thumping using the Flash Phone and can pinpoint where to start digging to repair the fault.

 Haefely Hipotronics has years of experience in cable fault locating the toughest faults. Their line of cable fault locating equipment is designed and manufactured based upon their field expertise. Whether you use the fault locator alone or with other accessories you've got a powerful tool to help restore power to your customers quicker.


CF30-8 Primary Cable Fault Locator

This product contains an environmentally-friendly natural ester-based fluid made from renewable vegetable-based oil. see FR3 datasheet

  • Self-Contained Features Proof Tester, Burner and thumper.
  • Burns Current to 50mA.
  • Internal discharge solenoid.
  • Impulse Energies of up to 900 Joules.
  • Automatic and Manual Thumper mode.
  • External interlock provisions.
  • Operate from Line Voltage or Generator.
  • Single HV Output Cable.
  • Indicator Lights mode.


  • Accurate Fault Identification and Location.
  • One Unit for URD Cable Maintenance Testing.
  • User Safety - visual verification of grounding status via face panel window.
  • Repeatable Impulse level.
  • Variable Impulse Rate from 3 to 30 seconds.

Technical Specifications

Input Voltage

A version

120 Volt AC, 50/60Hz

B version

230 Volt AC 50/60Hz


Proof Test

30kV DC (continuously variable)



Capacitor Discharge (0 to15kV at 8F)

Max Energy

900 Joules at 15kV

Duty Cycle


7 pulses per minute


Proof Test Voltage

0 to 30kV 2%

Proof Test Current

0 to 1, 10, 20mA 2%

Burner Current

0 to 50mA


Input Line

3.1 meter (10 feet) cable

Return to HV

15.2 meter (50 feet) shielded cable with vice grip


Two 3.1 meter (10 feet) cables with vice grip termination


406mm (W) x 762mm (H) x 406mm (D)



Shipping Weight



Ordering Information

Haefely Hipotronics CF30-8-A

Cable Fault Locator 120V AC 50/60Hz supply

Haefely Hipotronics CF30-8-B

Cable Fault Locator 230V AC 50/60Hz supply

Haefely Hipotronics CF30-8-PT-A

Cable Fault Locator 120V AC 50/60Hz supply with only 15 feet of return, HV cable, and MC type connector for use with HVC coupler and 8100 cable rack.

Haefely Hipotronics CF30-8-PT-B

Cable Fault Locator 230V AC 50/60Hz supply with only 15 feet of return, HV cable, and MC type connector for use with HVC coupler and 8100 cable rack.


Scope of Supply

Items included with Instrument

One each CF30-8 with terminations, Interlock Plug, Operations Manual, and Calibration Certificate.


Optional Accessories


Flash Phone, Digital Acoustic / Ballistic Listening Device


Spare parts kit


Time Domain Reflectometer

HVC4100 Series

HV Coupler to protect TDR from HV cable fault locator. (Note: TDR1150 must be used
with a coupling device).


HV Cable Rack


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Macey's Electrical Pty. Ltd.
ABN 17 344 601 468
Unit 1, 49 Gavenlock Road, Tuggerah, NSW Australia 2259
Phone: +61 2 4353 4644    Mobile: 0412 678 925