FIRE RETARDANT CABLE - CHASE CORP,US > 자유게시판

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Pat. No. 3,602,636. Basically, it uses an open weave glass fiber tape wrapped around the clustered conductors. Also, the glass cloth have to be dipped in weave set of chlorprene which acts as a primer previous to being coated with the barrier layer. Many of those drawbacks might be traced to the inclusion of the barrier layer which is calendered onto the glass cloth. A barrier layer in the form of a skim coat of flame-retardant unvulcanized polychloroprene is calendered on the glass cloth and at last an outer jacket of synthetic rubber is extruded in place onto the tapered conductors and fused to the underlying barrier layer. Turning now to FIG. 2, tape 14 is comprised of a 20 × 10 open weave glass fiber cloth or scrim 22. A steady film 24 manufactured from polyester, corresponding to that bought beneath the tradename "Mylar," is bonded to the scrim utilizing a relatively low viscosity fireplace-retardant plastic laminate adhesive 26. Suitable adhesive materials embrace acrylic, acrylic-polyvinyl chloride copolymers and polyurethane. Turning now to the drawing FIG. 1, a piece of service entrance cable is proven typically at 10. Cable 10 is comprised of a cluster, herein three, of insulated stranded conductors 12. Special cable insulation tape 14 to be described presently is helically wrapped about the clustered conductors 12 with the adjacent turns of the tape overlapping each other.

Turning now to the drawing FIG. 1, a bit of service entrance cable is proven generally at 10. Cable 10 is comprised of a cluster, herein three, of insulated stranded conductors 12. Special cable insulation tape 14 to be described presently is helically wrapped about the clustered conductors 12 with the adjoining turns of the tape overlapping one another. Therefore, the thickness and, therefore, weight of the tape as an entire are lower than those of conventional service entrance cable tape incorporating a pure or synthetic rubber barrier layer which is calendered instantly onto the scrim. DC333 will increase quickly to be dense foams as a barrier to stop the fire spread successfully. DC333 contents the particular Veova latex resin, fire retardant cable nanometer inorganic materials and water proofing agent which can have an effect on the anti-mud on the surface of coating layers to take care of the traits of coating not be decomposed by water. INCA DC333 The expandable fireproof paint in water base for both inside and exterior. Applied as a primer to interior surfaces with normal paint as its prime coat. DC 333 may be top coated with desired end latex paint to match décor.

Which means that it is less complicated to handle and can be shipped at a lower cost. That extra step, coupled with the truth that a full crew is needed to calender the fabric onto the glass cloth, means that the general value of the prior cable is larger than want be. Therefore, the two layers are urged collectively with out the glass fibers within the scrim being cracked by excessive pressure. Secondly, the utilization of the relatively low viscosity adhesive because the bonding agent gives a lubricant which seems to wick up between the person fibers in the scrim, thereby reducing the tendency of the fibers to abraid one another below stress. The utilization of the laminate adhesive additionally improves the hearth-resistance characteristics of the cable. The current cable has several distinct benefits over its standard counterparts as exemplified by the cables described within the aforesaid patents. All of those components make the current tape a highly profitable industrial product whose attributes are also loved by the cable system into which the tape is included. The application is for bundle cable, or cable bundle in tray in Industrial circumstances. First, while satisfying the entire UL mechanical and electric exams for such cable, the present product is ligher in weight.

Exterior cable of this type need to fulfill the stringent take a look at necessities of the Underwriters' Laboratories, Inc. For instance, service entrance cable, which is the cable which conducts electricity from overhead power lines right into a person's house, must cross the UL 300 amp. It relates extra notably to fire-retardant insulation in sheet and tape form for cables that are exposed to the elements and which should be able to withstand tough utilization, e.g. a service entrance cable. Probably the most prevalent sort of service entrance cable in use right this moment employs conductors wrapped with a layer of polyethylene terephthalate which is, in turn, surrounded by braided in situ fiber sheath impregnated and coated with asphalt and then lacquered. Fairly just lately, one other kind of cable has been launched which does not require the aforesaid braided sheath. While that type of cable passes the required UL exams and is an enchancment over the prior braided cable in terms of price, it nonetheless has sure drawbacks. The subject cable insulation additionally has a comparatively excessive tensile strength as compared with prior products. Desirably, additionally, a filler 16 composed of asbestos fibers or other such materials is wrapped along with conductors 12 so that it fills the areas between the conductors, thereby giving the cable a cross section which is actually spherical.