Power cable corona discharge fault repair

by:Mings     2020-07-14

the corona discharge occurs when the terminal of the cable head surface, its reason mainly has: the terminal head surface filth; Three core bifurcation of distance is smaller, the gap between the core and core to form a capacitor, happened caused by free; Ambient humidity, etc.

for all these reasons the repair methods are as follows.

1), if the head for outdoor terminal surface corona occurs, but after cleaning, the traces on the surface corona discharge grinding to remove some silicone coating. , epoxy, chunky file after polishing cleaning cloth or wood, add some epoxy resin in the flat place higher plane.

(2), if the head for indoor terminal surface corona occurs, but after cleaning the surface filth, painted the epoxy resin as a whole package with glass ribbon around several layers and in tail part around several layers of insulation tape, to strengthen the surface of the insulation performance.

3. In case of corona discharge for dry cable head phenomenon, can be adopted such as potential solutions, on each core insulation surface, namely a metal band, and connect with each other, to eliminate the corona; In addition, can also be used the principle of stress cone will additional insulation package into a stress cone shape, in order to improve the electric field distribution.

(4) due to damp the corona discharge, drainage and improve ventilation measures should be taken first, then use infrared light bulbs or hot air drying wet surface.

heat shrinkable cable terminal of the high pressure heat shrinkable cable terminal

high pressure heat shrinkable cable terminal, don't like low voltage heat shrinkable cable terminal that we mentioned above, our high pressure heat shrinkable cable terminal, color don't have much choice, only red, the red is not as bright as low voltage heat shrinkable cable terminal, can slant a bit dark, a little red, similar to the 10 kv bus customer if need be, can contact our sales staff, can let the sales staff to send the related information, make further understanding. Same as the low voltage heat shrinkable cable terminal point, is both with a finger and insulating tube, although the color of the insulating tube is different, but refers to the set is the same colour, only black, generally refers to the set of visible on the market are black, there are few other colors.

complete, the high pressure heat shrinkable cable terminal supporting than low voltage heat shrinkable cable terminal to include more content, low voltage heat shrinkable cable terminal, a set is composed of insulating tube and refers to the set, and the high pressure heat shrinkable cable terminal, complete in addition to insulating tube, refers to the set, including stress pipe, accessories, sealing, filling adhesive and so on many other things, high pressure heat shrinkable cable terminal will also have indoor, outdoor, this point of low voltage heat shrinkable cable terminal is not, can be classified as the difference between high and low voltage heat shrinkable cable terminal.

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