cable fault location instrument από Eurodicatom


Αυτό που ζητάς είναι λίγο πιο εξειδικευμένο: δες παρακάτω μία "εξήγηση" του πως λειτουργεί αλλά πιό εξειδικευμένο όρο στα ελληνικά δεν μπορώ να βρώ.

There are cases when a high resistance fault needs to be "burned down" to create a lower impedance fault path, allowing the use of a thumper with a lower output voltage discharge. A thumper with an adequate burn current rating or some other method of burning cable faults, like a VLF AC Hipot, can be used to reduce the cable fault impedance to a point where a much lower output voltage capacitor discharge will arc the cable and allow the fault to be located. The most versatile thumpers have multiple output voltage discharges as well as burning capability. More on cable burning later.

www.hvinc.com/cdsequal.htm

--------------------------------------------------
Note added at 3 hrs 30 mins (2004-07-28 22:15:47 GMT)
--------------------------------------------------

VLF Cable Burning A thumper burner is used to reduce the impedance of a fault, or make it a worse fault. Many conventional thumpers offer 20 – 50mA of DC current from their DC hipot outputs for this purpose. (High Voltage, Inc. thumpers offer up to 400 mA on somemodels). To burn down a cable fault with only 25 or 30 mA can take many hours. The fastest method of burning down cable faultsis with a VLF burner. The VLF hipot automatically raises its output voltage until the cable arcs. This repeated arcing of alternatingpositive and negative polarities (the VLF has a sinusoidal AC output), combined with the cable’s stored energy discharged into thefault every half cycle, rapidly reduces the fault arc-over voltage to a very low level, permitting the use of a lower voltage and joulerated thumper. The 500 joule output from the VT30 is more than ample energy to locate low impedance faults

www.hvinc.com/download/vt-30_brochure.pdf και

Hipot Testing or Fault Conditioning (Burning). ... Burn Current, 160 mA (@ 8kV DC ...
www.hipotronics.com/fieldtest/fldtst28.htm

Άρα μπορεί να αποδοθεί σαν όργανο προετοιμασίας βλάβης για ευκολότερο εντοπισμό της, ή κάτι παρόμοιο.