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.