XLPE is acronym for Cross-Linked Polyethelene. It is used as one of the major parts of power cable, particularly in its insulation. The other parts are the conductor and jacket. It is made up of Polyethylene or polythene with bonds that link one polymer chain to another.
XLPE was first patented in 1959 by Dr. Frank Percopio.It was not widely used then due to the high cost of its production until the 1980's. Its superior allowable emergency temperatures made them the choice for power feeder cables in commercial and industrial applications. XLPE did not melt and flow as did the HMWPE material.
Advantages of XLPE Cables over Other Insulation Types
Low Dielectric Losses
High Initial Dielectric Strength
Improved mechanical at elevated temperatures
No melting above 105 deg Celsius but thermal expansion occurs
Reduced susceptibility to water treeing
XLPE Ampacity Example (Catalog)
Specification Of Power XLPE Power Cable (Sample)
A. Voltage Rating
1. Specify 600V, 1, 2, 5, 8, 15, 25, 28, or 35kV
1. Metal (aluminum or copper)
2. Size (AWG or kcmil)
3. Number of wires
4. Temper (1/2, 3/4, or full hard aluminum/soft copper)
1. Type (XLP)
2. Thickness (100% or 133%)
(Note: Conductor and insulation shields are semiconducting materials)
2. Helical Tape
3. Wire and Helical Tape
2. Galvanized Steel
3. Continuous Corrugated Aluminum ARMOR-X®
F. Overall Jacket
4. Low Smoke
1. Requested delivery date
2. Total quantity required
3. Desired reel footage lengths
4. Length tolerance
5. Additional shipping information
6. Additional standards (cable will be produced to standards shown on data sheet, unless otherwise noted)
Other XLPE CABLE LINKS
TECHNICAL SPECIFICATION FOR 11/22/33 kV NOMINAL VOLTAGE HT XLPE POWER CABLES (SPECIFICATION NO.MM/I/HTXLPE/2006)
The specification covers design, manufacture, shop testing, packing and delivery of 11,22 & 33 kV , multi core , cross linked polyethylene insulated power cables by road/rail to the designated Store Centers in the State of Maharashtra. These cables shall be suitable for the 3 phase AC-50 Hz system with the nominal voltage of 11/22/33 kV which may reach maximum of 12/24/36 kV respectively. These cables shall primarily be designed for effectively earthed neutral system. Read more...
XLPE Solid Dielectric Power Cable Since 1979 Sumitomo Electric Industries (SEI has supplied and installed more than 1700km(1062K.mile) of EHV XLPE cables from 100kV to 500kV in Japan and foreign countries. SEI has supplied 500kV XLPE cable to the world longest service line of Tokyo Electric Power Company since 1995, which was commissioned in the year 2000. Read more...
The Insulated Cable Engineers Association (ICEA) is a professional organization dedicated to developing cable standards for the electric power, control, and telecommunications industries. Since 1925, the objective has been to ensure safe, economical, and efficient cable systems utilizing proven state-of-the-art materials and concepts. Now with the proliferation of new materials and cable designs, this mission has gained in importance. ICEA documents are of interest to industry participants worldwide, i.e.cable manufacturers, architects and engineers, utility and manufacturing plant personnel, telecommunication engineers, consultants, and OEM'S. Read more...