Tray Cable, Wire & Cable. The main reason an electrical contractor would prefer a XLP tray cable over one insulated with PVC such as a VNTC tray cable is the XLP compound has superior resistance to fire, moisture and chemicals. What is clear is that any EPR formulation will have higher losses than a non-mineral filled PE or XLPE system. XLP/PVC Tray Cable features a cross-linked polyethylene (XLP) insulation and PVC jacket for superior corrosion resistance and extended use in high demand applications.XLP tray cable is available in a multitude of constructions, including multi-conductor, multi-pair, and grounded. Some frequently used standards are: IEC 60228 Conductors of insulated cables. Electrical insulation materials are employed over the metallic conductors of underground cables at all voltage ratings. Note that adding antioxidants to oil to prevent it from degradingis rather common. Research and development in the past few years has shown that PE and XLPE may be harmed by the use of a dc test, but this does not occur with paper-oil systems. of 90°C and are made to BS 5467. Paper is also highly susceptible to deterioration from moisture. How these insulations respond on aging is a well studied subject since it is directly related to reliability of the cable after installation and energization. XLPE vs PVC: XLPE is crosslinked polyethylene. XLPE is suitable for voltage ranges from low to extra high voltage, surpassing other insulation materials such as PVC, Ethylene Propylene Rubber and silicone rubbers.Cross-linking the polyethylene also enhances the chemical and oil resistance at elevated temperatures and makes it suitable for use as a Low Smoke Zero Halogen material. The latter is present as fuctional hydroxyl or ether groups. Carbon and Stainless Steel. Polymerizing Method: XLPE is formed from addition polymerization. XLP has a lower 5-year return than XLY (8.66% vs 15.01%). (Polarity means increased dielectric losses.). Service life: Usually, the XLPE insulated … This article explains a popular form of copper tray cable called XLP or sometimes referred to as XLPE tray cable. Wire & Cable Your Way offers a wide selection of XLP/PVC Tray Cables at the low prices with fast shipping – available by the foot with no cut charges. XHHW-2 – High Temperature (90°C Wet or Dry) Cross-Linked Polyethylene Jacketed, 600V, Building Wire. The paper is applied as a thin film wound over the cable core. Paper is obtained fi-om a wood or cotton source. Get access to premium HV/MV/LV technical articles, electrical engineering guides, research studies and much more! Polyolefins include linear low density polyethylene, low density polyethylene, high density polyethylene, polypropylene copolymer, polypropylene, and polymethyl pentene. Get instant access to fastQuotes, account information, quote and order history, copper pricing, and freight estimates. . Like most tray cables, this product can be purchased with a shield in the circuit sizes where electromagnetic frequencies could cause interference to the signal. It is similar to XHHW building wire except this product is rated for direct burial applications. Electrical insulation materials are employed over the metallic conductors of underground cables at all voltage ratings. These are the only plastics that have a lower specific gravity than water. EPR does tree contrary to some Performance characteristics km for a 138-kV system and 127 MHh/cct. The XLPE cable exhibits about 70% higher impulse strength than the EPR cable. 3. Polyolefins are high molecular weight hydrocarbons. LDPE (Low Density Polyethylene) has the most ex… XLPE/SWA/PVC 4-CORE BS 5467 600/1000 V XLPE insulated steel wire armoured and PVC sheathed cable with copper conductors. Under short circuit condition,this cable can withstand up to 250ºC temperature compared to 160ºC for PVC cables. This table provides a comparison of the properties of paper, polyethylene, crosslinked polyethylene, and ethylene propylene rubber insulations. How Survey Feedback Can Feed Your Bottom Line. XLPE Cables are used at max. This may influence resistance to water treeing. In the present time the PLC is already gone in history PVC/SWA/XLPE cable is in use .and accessories is following such as jointing with cross bonding ,fiber optic for thermal record and cable connectors all the system is in practical use … and so many advance on side of XLPE cables … The above is follow with standard for AC testing and commissioning what is different than for PLC cables Note: for the transfer of huge amount of power on long distance, already have systems DC current transmission and convertors DC/AC for the start and end of the T.Line above 400 kV… and etc. When cellulose degrades, it does so at a “weak link,” the region of the oxygen linkage between the rings. Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links.It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, and insulation for high tension (high voltage) electrical cables. Tray Cable - XLP-PVC. This was later carried over to extruded dielectric cables. CURRENT RATINGS The current ratings are thoroughly presented in ERA 69-30 part V: CURRENT RATING STANDARD FOR DISTRIBUTION CABLES. PVC vs XLPE for insulating cable: What’s the difference? Its structure provides great resistance to abrasion, stress, and other wear and tear. When making a decision between different kinds of cables for a project, you may be faced with the choice between installing PVC insulated cable and XLPE cable . EPR vs. XLPE for MV power cables – Electric power ... XHHW-2 – COPPER BUILDING WIRE, XHHW, XLP, XLPE. The loss factor of the XLPE cable is at least 20 times lower than that of EPR cable. This product is also referred to as RHH/RHW meaning it meets the UL standard 854 for service entrance cable. With the change in structure, the XLPE derives superior electrical properties. Maximum short (lasting less than 5 seconds) temperature: PVC insulated Cable is 160 Centigrade, XLPE insulated Cable is 250 Centigrade. XLPE VS. While all of the synthetic polymers undergo thermal expansion during heating, this does not occur with cellulose-although the oil will do so. The drawback to XLP tray cable verse VNTC tray cable is the cost. This is a technique that was adopted for PILC cables many years ago. DC testing of cables has traditionally been performed to ascertain the state of the cable at specific times during their use, such as before peak load season. ambient temp. EPR vs. XLPE for MV power cables Electric power My 2¢ worth: EPR is more tree resistant than plain old XLPE but Tree Retardent TR-XLPE is just as good as EPR from that standpoint. Care must be taken in seeking to compare EPR to XLPE to TR-XLPE. Study specialized technical articles, papers & video courses. The XLP is the insulation part of the tray cable. XLPE Cables have higher current rating and longer service life compared to PVC Cables. XLP tray cable is a 600 volt product that can be direct buried or installed in cable tray. It is most often used as the insulation of 600 volt building wire (e.g., Type XHHW), as the insulation in 5 to 69 kV and higher rated power cables and as the insulation in many control cables. In other words, it is the material that covers the copper conductors in the construction of the tray cable. This article explains a popular form of copper tray cable called XLP or sometimes referred to as XLPE tray cable. The contribute a measure of polarity that is absent in the synthetic polymers. XLP0 Wire and Cable - Galaxy is a leading supplier of custom and stock wire and cable made with cross-linked polyolefin (XLPO) insulation/jacketing material. RHH/RHW-2/USE-2 can be installed as a General Purpose Building Wire, used in service entrance, feeders and branch circuit applications for residential, commercial, industrial and transportation environments for permanent installations utilizing 600 volts or less. Some of these advantages are electrical and some are not. Electrical engineer, programmer and founder of, Partially crystalline / Relatively constant, Partially crystalline / Varies with grade employed, Thermal degradation via cleavage at weak link, Low permittivity (low dielectric constant), Improved mechanical properties at elevated temperature, No melting above 105 “C but thermal expansion occurs, Reduced thermal expansion relative to XLP, No hydraulic pressure / pumping requirements. XLP/PVC Tray Cable is intended for use where flame retardance, and moisture/chemical resistance is critical. Apply 15% off code on Pro plan: ZX21F. Over this insulation is a jacket compound such as a thermoplastic PVC (polyvinyl chloride) or a thermoset CPE (chlorinated polyethylene). 2. Only the paper is a natural polymer and is therefore processed differently. EPR vs. XLPE for MV power cables – Electric power ... XHHW-2 – COPPER BUILDING WIRE, XHHW, XLP, XLPE. XLPE, as explained above, is cross linked polyethylene material. Some EPR systems may have very high losses. Final Thoughts: As always, the decision between using THHN or XHHW comes down to weighing performance versus budget. Polymeric materials are employed as the insulation, but the nature of the polymer may vary with the voltage class. Both XLP and XLY are ETFs. This means that they weigh less than water. Aurora, CO 80011. These products are designed for use in conduit, cable tray or direct burial. XLPE Power Cable - UL Type XHHW-2 and c(UL) Type RW-90 is part of Allied Wire & Cable's stock of Industrial Cables. DWC's customer portal is offered exclusively to electrical distributors. XLPE cable means cross-linked polyethylene insulated aluminum conductor armored cable. Tell us what you're thinking... we care about your opinion! This can be a significant amount of money in the power sizes or if you require large quantities of tray cable for your job. Front and Center – capitalize on the growth opportunity of data centers! EPR vs. XLPE for MV power cables – Electric power… Does anyone know what the differences are? PVC is more common due to its low cost and higher availability. What is the difference between PVC and XLPE The structural elements of wire and cable products can be generally divided into four main structural components of wire, insulation, shielding, and sheathing. Thus with XLPE cables, the yearly energy savings can be on the order of 15 MWh/cct. The synthetic polymers are produced by polymerization of monomers derived from petroleum. However, the superior construction of the product should be used when flame retardance is required. Protection against degradation is imparted to  polyolefins by adding an antioxidant to the pellets prior to extrusion. Transmission cables, which are defined as cables operating above 46 kV, have traditionally used paper / oil systems as the insulation. The content is copyrighted to EEP and may not be reproduced on other websites. Monomer: XLPE is made out of ethylene monomers. IEC standards are considered to express an international consensus of opinion. PVC is made out of chloroethene monomers. km for a 230-kV system. All consist of carbon and hydrogen, but paper also contains oxygen. XLPE Insulated Power High Voltage Cable. These materials can become brittle from oxidation and are damaged by exposure to UV light. XLP and XLY have the same expense ratio (0.13%). Regards Stojce. XLP stands for cross linked polyethylene. Depending on the manufacturer, XLP tray cable with a PVC jacket can increase the cost between 10-20%. Comparative laboratory evaluation of TR-XLPE and XLPE cables with Super-smooth conductor shields November 2004 IEEE Transactions on Power Delivery 19(4):1532 - 1537 In other words, this product is a better option in most hazardous locations where cable durability is critical due to severe elements. This is due to the XLPE insulation of the XHHW allowing the cable to bend and flex more easily than the PVC insulation of the THHN – making XHHW much easier to work with during the installation process. XLP USE is a cross-linked polyethylene insulated single conductor stranded or solid bare copper wire. STANDARDS The cable is manufactured and tested according to BS 5467. Cavi energia per esterno, Cavi interrati per alta tensione, Isolamento in XLPE, 127/220 (245)kV Aluminium Conductor Copper Wire/Alu-Tape, 127/220 (245)kV Copper Conductor Copper Wire/Alu-Tape, 230/400 (420)kV Aluminium Conductor Aluminium Screen (SAS), 230/400 (420)kV Aluminium Conductor Copper Wire/Alu-Tape, 230/400 (420)kV Aluminium Conductor Copper Wire/Lead Sheath, 230/400 … Crosslinking: XLPE has crosslinks between polymer chains. We have 7 cable distribution centers in the U.S. to help with all your wire & cable needs. The difference between PVC, PE, and XLPE - Apr 03, 2018 - Polyethylene English referred to as PE, it is ethylene polymer, non-toxic. Since the advent of synthetic polymer development, polyethylene (PE) has been used as an insulation material, and in most countries (France being the exception) the use of polyethylene was limited to the crosslinked version (XLPE). In XLPE cable stranded aluminum conductor is first screened in the form of a semiconducting extrusion which provides a smooth conductor surface and prevents a formation of cavities at the surface of the conductor when the cable is subjected to bending. Insulation is an abrasion, moisture, and heat resistant cross-linked polyethylene (XLP) Sizes 14, 12, and 10 AWG available in black, white, red, blue, yellow, green, orange, brown, purple, and gray. These cables have better insulation qualities than PVC and available in sizes up to 400 mm² or 1000 mm² Single Core. PVC stands for polyvinyl chloride insulation. Cross-linked Polyethylene (XLP or XLPE) Cross-linked polyethylene is a frequently used polymer in wire and cable. When this happens, the DP is reduced. Learn about power engineering and HV/MV/LV substation design. XLP tray cable is a 600 volt product that can be direct buried or installed in cable tray. Since paper insulation was used first in the power industry, and was later replaced in low and medium voltage applications, any comparison of properties usually employs the paper-fluid system as the standard. XLPE (the acronym used to describe cross-linked polyethylene when it comes to cabling) tubing serves as a perfect insulator for these cables. km for a 69-kV system, 52 MWh/cct. XLPE cable systems specified according to IEC (International Electrotechnical Commission) are among many other stand-ards accepted. XHHW-2 – High Temperature (90°C Wet or Dry) Cross-Linked Polyethylene Jacketed, 600V, Building Wire. Conductor sizes 2 AWG and larger listed and marked sunlight resistant in black only XLP stands for cross linked polyethylene. One further point should be noted on the chart: the different response of the insulation types to dc testing. However, EPR systems are generally ‘‘softer” due to their lack of crystallinity and therefore easier to handle in the field-especially at very low temperatures. The main difference between the two is that XLPE can be used for both high and low tension applications. We have worked with Pro-Line for 10 years. Both type of cables are easy to lay and bending and they have less … Circuit sized XLP tray cable (10, 12, & 14 AWG) offer higher conductor options (5/c or more). XLP/USE Wire Overview.