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application of water - resistant filling paste for cable in middle and low voltage cable
from：guichao author：admin click： 358 addtime：2017-04-07 12:04:03
in the cable industry, part of the power cable is laid in the wet underground cable trench,
buried xlpe insulated power cable in operation, in case of accident,
when the electric breakdown occurs, the groundwater enters the conducting wire core through the breakdown point,
and the core of the strand along the cable to the cable penetration, infiltration of water into the insulation layer,
under the action of electric field, the insulation layer will be accelerated, and the whole cable will be scrapped.
use a water tight cable, if the water enters the port, the water contained in the super absorbent powder,
it can absorb the water absorption of water, the water resistance of the rapid expansion of many times,
a gel formed a wall to block the flow of water, protect the cable.
water resistant filling paste for cable is a kind of water blocking material widely used in cable industry,
it is mainly composed of base ointment, expansion material and additive. about 70% of the base oil,
about 20% of the expansion materials, additives accounted for about 10%. this ointment has good performance of high and low temperature,
the advantages of high water absorption, high speed, high magnification. the utility model relates to an expansion water resistance filling paste, which is a yellow solid,
through the expansion of water to achieve the effect of water resistance, so that the cable seal each gap,
to prevent water molecules from passing through, play the role of cable sealing, waterproof and moisture barrier,
in order to achieve the purpose of water blocking cable in special environment.
filling in the different parts of the cable and the different parts of the structure,
waterproof, moisture barrier and buffer protection has been the consensus.