ICEA S 108 720 PDF
ICEA S applies to materials, constructions, and testing of crosslinked polyethylene (XLPE) and ethylene propylene rubber (EPR). Find the most up-to-date version of ICEA S at Engineering ANSI / ICEA S Standard for extruded insulation power cables rated above 46 through. kV. ISO Standards. Our systems comply with the.
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The volume resistivity shall be calculated as follows: The thickness of the copper sheath shall be at least 0. Where the number of samples selected in any single lot is less than ten, all reels shall be considered as not conforming to this standard if more than 20 percent of ucea samples fail.
The application of a jacket can greatly reduce this corrosion. The cable shall be cut using a fine tooth saw at the 1. The wires shall be measured at each end of the sample and near the middle of the sample. Tests on the identical maten’als or design are not necessary to demonstrate the desired performance results. There are no requirements for a in this standard. To insure that the thermal insulation and the plastic pipe yield a similar temperature gradient, it may be kcea to set up a “dummy” length of cable using a pipe and thermal insulation material to compare the thermal characteristics of each.
Chemical Protection Jackets can provide protection from certain chemicals that might be detrimental to the cable core. Minimum temperature at which cable will be installed. Polymers can be manufactured in various ways, as can any copolymer of ethylene and an alkene. Installations under ground or in concrete slabs or masonry in direct contact with the earth; in locations subject to saturation with water or other liquids and in unprotected locations exposed to weather.
A water tree which originates at the conductor shield or insulation shield. The height of the segment is the wall of insulation on the side from which the slice is taken. The cable manufacturer should be contacted for specific details regarding the operation of cables at temperatures above 90 “C.
ICEA S – PDF Free Download
This test is conducted to verify that the cable has not failed on the last impulse. The diameter of the mandrel and the number of tums are given in Table At the end of this time, the specimens shall be removed from the oil, blotted to remove excess oil, and allowed to rest at room temperature for a period of 16 to 96 1008. Butted tapes shall not be permitted. Ten impulses of each polarity with magnitude equal to the BIL shown in Table shall be applied. If both such second ivea pass the test, the lot of cable except the length represented by the first sampleshall be considered as meeting the requirements of this standard.
A qualified semiconducting conductor shield can be used as an insulation shield without requalification. The resultant polymers may provide improvements while complying with applicable requirements in ICEA standards. The extruded conductor shield minimum thickness shall be as follows: A continuous run of cable core with one conductor size, one conductor shield compound, one insulation compound and thickness, and one insulation shield compound.
The insulation shall meet the following requirements: A total of three bending cycles three forward bends and three reverse bends are required.
The temperature of the molded specimens shall be lowered at any suitable rate. Other alloy lead sheaths may be furnished if the composition is mutually agreed upon by the purchaser and the manufacturer. It also has to withstand the thermal and mechanical forces that occur during installation and operation of the cable. If either of the second samples fails to pass the test, the lot of cable shall be considered as not meeting the requirements of this standard. Cables intended for installation in dry locations or having a radial moisture banier in accordance with paragraph 6.
Emergency conductor maximum operation temperature the cable was designed to meet. A dc or 60 Hz ac source can be used. The portion of a cable which includes the conductor, the conductor shield, the insulation and the extruded insulation shield. The temperature shall be achieved by circulating current in the conductor.
The heating and cooling cyde shall be performed three times, if required. When ten or more samples are selected from any single lot, all reels shall be considered as not conforming to this standard if more than I O percent of the samples fail to meet the requirementsfor physical and aging properties and thickness.
The selected measuring device shall have a minimum resolution of 0. A complete description of the 1108 including dimensions and material description of each layer. The voltage applied to the sample shall be of power frequency hz and the waveform shall be substantially sinusoidal. The interface between the extruded conductor shield and the insulation shall be free of any voids larger than 2 mils iccea. Overall Jackets Commonly used jacketing materials such as low density polyethylene LDPE and polyvinyl chloride PVC can become soft and deform when the cable conductor is operated at elevated temperatures.
For all other extruded components, the measurement of thickness shall be made only with an optical idea device. Jackets, though not typically designed for this, do filter out some of these ions as moisture migrates into the cable. The metallic ucea can consist of wires, flat straps, tape, foils or a sheath.
ASTM B for compact round stranded aluminum conductors using single input wire constructions. Joints in the tape shall be made electrically continuous by welding, soldering, or brazing. The extruded shield shall be compatible with all cable component materials with which it is in contact. The conductor shield shall be easily removable from the conductor and the outer surface of the extmded shield shall be firmly bonded to the overlying insulation.
A cable with a jacket which was applied in one continuous run with one jacket compound and one jacket thickness.
Table Extruded Conductor Shield Thickness 3. Overload temperatures are to OCfor cables rated up to and including kV and OCfor cables rated abwe kV. In the case of complete change in color of all granules, the water shall be expelled from the conductor per 9.
A bedding layer such as semiconducting tapes may be used over the extruded insulation shield to insure cable core expansion without damage to the metallic shield or cable core. Test 2 5 Vg 60 Min.