ARMORED SUBMERSIBLE Power CABLE > 자유게시판

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In the example of FIG. 13, the XLPE is PolyOne SYNCURE™ S1054A (PolyOne Corporation) ("S1054A material"). The S1054A material is obtainable as a base resin and is moisture crosslinkable (e.g., moisture curable). As to water or steam in crosslinking, moisture results in hydrolysis of alkoxy teams of silane group adopted by condensation to kind stable siloxane linkages (the crosslinks). Such a silane cure system will be employed without an additional crosslinking process. As to manufacturing, the cable seven-hundred of FIG. 12 can exhibit improved manufacturing when compared to the cable 1200 of FIG. 12. For instance, the braided layer 1260 may be utilized at roughly 18 to 20 feet per minute (e.g., approximately 5.5 to approximately 6.1 meters per minute) while a high velocity tape wrapping machine can process a cable at approximately 100 to 200 feet per minute (e.g., roughly 30.5 to roughly sixty one meters per minute). For instance, indentations in the lead (Pb) barrier layer for the cable seven-hundred don't embrace sharp edges from an armoring process as proven for the cable 1200. Further, the shapes of the lead (Pb) barrier layers for the cable 700 are considerably circular as originally assembled prior to the armoring process; whereas, for the cable 1200, the shapes are distorted.

As proven in FIG. 12, the cable seven-hundred is flatter than the cable 1200 as a result of the cable 1200 has bulged in the middle attributable to drive that has distorted lead (Pb) barrier layers of the cable 1200. A flatter cable can sit better on a reel, as well as, for instance, provide a more normal and higher clearance during set up and as soon as put in. As mentioned, various parameters of a production course of may be tailored to increase the crosslinking charge to thereby obtain a desired amount of crosslinking (e.g., a desired crosslink density) of XLPE through the manufacturing process, which can help to guard a lead (Pb) barrier layer from a number of subsequent processes (e.g., armoring, rolling on a spool, etc.). Given the foregoing data, XLPE annealing at ambient situations is achieved in about one month and is achieved in sizzling water or steam for 12 hours at approximately eighty levels C. (e.g., to finish the curing course of). XLPE is quite slow at room temperature but can however be accomplished at ambient situations.

The absolutely cured XLPE/PP/Talc composites could have better chemical compatibility and lower swelling/fluid uptake share than pure XLPE. As mentioned, a cable could also be manufactured to be over a kilometer in size. Where a cable is to be a kilometer in length, a limiting charge of 6 meters per minute translates to roughly 167 minutes; whereas, low voltage armored power cable a limiting rate of 61 meters per minute interprets to approximately 16.Three minutes; noting that extrusion can be in excess of roughly sixty one meters per minute. As a way to introduce enough heat to completely activate the peroxide curative, after extrusion an assembly will be despatched by way of a excessive strain steam or sizzling nitrogen containing tube. And, added prices may be related to maintaining a high temperature steam (or sizzling air) tube and/or boilers or nitrogen generators that might feed it. For example, processing gear might optionally embody one or more varieties of equipment that can be used to alter properties of the first materials 2412 and/or the second materials 2414 and/or the third materials 2416. For instance, such equipment can be or embrace a scorching air oven and/or a sizzling liquid bath that may expedite curing, submit-curing, and many others. when one or more of the materials 2412 and 2416 is handed therethrough.

For example, an XLPE materials can embrace talc to supply more thermal and chemical stability to uncured XLPE at high temperatures. However, line speeds could also be slower than with one or more different approaches (e.g., to allow cure to finish). For example, a crosslinking course of could also be carried out in strong formed polymer reasonably than in melt. A crosslinking process might be relatively slow, for instance, consider circumstances of at the very least eight hours in hot water or steam at 80 degrees C. or up to five weeks at room temperature. Such a layer can be made with a desired thickness to provide for a cable rated to be used in particular conditions (e.g., per cable specs). For instance, a cushion layer can embody material that may be crosslinked submit-extrusion. Such crosslinking can be utilized to assist maximize the thermal stability, fluid resistance, and mechanical robustness of the polymeric material.