Another critical question in determining the proper fault locating tools is the overall capacitance of the cable being tested. The larger the capacitance (long cable runs) the larger (voltage and energy) the thumper needs to be able to supply. There is a danger in selecting a thumper that is too small. If the thumper is not powerful enough to break down or arc the fault, the voltage that is applied to the cable will be stored in the cable. When the cable finally reaches its capacitance, the voltage stored in the cable is reflected off of the far end and back fed into the thumper causing a catastrophic failure in the thumper.
At Protec Equipment Resources we understand cable fault locating. Talk with our knowledgeable application experts before embarking on your next locate. Allow our knowledge and vast inventory of cable fault locators to make your next fault locate a great success!