ANSI ICEA S-76-474-2011 NEUTRAL-SUPPORTED POWER CABLE ASSEMBLIES WITH WEATHER-RESISTANT EXTRUDED INSULATION RATED 600 VOLTS.pdf
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1、ANSI/ICEA S-76-4 7 4-2011 . ,., STANDARD FOR NEUTRAL-SUPPORTED POWER CABLE ASSEMBLIES WITH WEATHER-RESISTANT EXTRUDED INSULATION RATED 600 VOLTS Approved by AMERICAN NATIONAL STANDARDS INSTITUTE July 15, 2011 Publication# ANSI/ICEA S-76-474-2011 I I I I I I I I I I I I I I I I I I I 2011 by 1 11 INS
2、ULATED CABLE ENGINEERS ASSOCIATION, Inc. 1 II I II I II I II I II I II I II I II Approved as an American National Standard ANSI Approval Date: July 16, 2011 ANSI/ICEA Publication S-76-474- 2011 Standard For Neutral-Supported Power Cable Assemblies With Weather-Resistant Extruded Insulation Rated 600
3、 Volts Developed and Published By Insulated Cable Engineers Association, Inc. Post Office Box 1568 1“ - . tl+nn . .,;. “ln1-t? I I:; Ul lilt: UIIIUt:l t,;UVt:llllfd, Wllt:ll U:it:U1 :tiiCIII Lit: lllt:CI:tUit:U Ill CUiAJIUCIIIil: Willi IVIJ“ T-27-581/NEMA WC 53. The minimum thickness at any point of
4、 the covering shall not be less than the app!ic.ab!e value in Tab!e 31. 2011 by the Insulated Cable Engineers Association, Incorporated 3.4 SEPARATOR Table 3-1 MINIMUM THICKNESS OF THE BINDER COVERING Binder Size AWG 10 Thickness. mils(mm) LOPE I LLOPE I MOPE 27 (0.69) HOPE 14 (0.36) ICEA 5-76-474-2
5、011 Page 13 A separator may be used between a solid or stranded conductor and the insulation or covering. If a separator is used, it shall be opaque or colored. A clear separator is not permitted. 3.5 ELECTRICAL REQUIREMENTS 3.5.1 Voltage Tests When tested in accordance with ICEA T-27-581/NEMA WC 53
6、, each phase conductor of each manufacturing or finished length shall successfully withstand either of the following tests: 3.5.1.1 After the cable is immersed in water for 30 minutes, an ac voltage of 3000 volts shaii be applied for one minute between the phase conductor(s) and the water. 3.5.1.2 A
7、 spark test of 8.5 kV ac or 13.0 k.V de voltage sha! be applied. The test sha! be conducted on the finished assembly of conductors with the neutral isolated from the applied voltage. Where an assembly is subject to the direct current spark test, the individual phase conductors shall be similarly tes
8、ted prior to assembly. 3.6 INSULATION OR NEUTRAL COVERiNG REQUiREMENTS 3.6.1 Thickness Requirements 3.6.1.1 Insulation Thickness When measured in accordance with ICEA T-27-5811NEMA WC 53, the minimum thickness at any point of the insulation shall not be less than the applicable value in Table 3-2. 3
9、.6.1.2 Neutral Covering Thickness ,AJhsn measured in accordance with !CE.-A T-27-581/NE.t.t AJC 53, the minimum thickness at any point of the neutral covering shall not be less than the applicable value in Table 3-3. 3.6.2 Physical Requirements 3.6.2.1 Insulation Physical Requirements The insulation
10、 shall meet the requirements in Table 3-4. 2011 by the Insulated Cable Engineers Association, Incorporated ICEA S-76-474-2011 Page 14 3.6.2.2 Neutral Covering Physical Requirements The neutral covering shall meet the requirements in Table 3-4. Conductor Size AWGorkcmii 8-2 1-4/0 250-477 Table 3-2 MI
11、NIMUM THICKNESS OF INSULATION Minimum Thickness Mils (mm) 41 (1.0) 54 (1.4) 72 (1.8 Nominal* Thickness Miis(mmi 45 (1.1) 60 (1.5) 80 (2.0 The nominal insulation thicknesses are not requirements. They are included for information purposes only. iabie 3-3 MINIMUM THICKNESS OF NEUTRAL COVERING Conducto
12、r Size AWGorkcmil Minimum Thickness Mils(mm) Nominal* Thickness MilsCmml 8- 4 27 (0.69) 30 (0.76) 2-1 41(1.0) I 45(1.1) 35-7 I g : ! g :l The nominal insulation thicknesses are not requirements. They are included for information purposes on!y. 2011 by the Insulated Cable Engineers Association, Incor
13、porated Property Density (gm/cm1 t Initial Tensile, min. psi. (MPa) Initial Elongation at Rupture, Minimum, perc-ent (See 6.1) After Aging in air oven, Hours Temperature, c 1 c Tensile Strength and Elongation at rupture: OL nf I lneonAII uah1D IV WI -oiWl:fVW . , . (See 6.1) Heat Distortion Temperat
14、ure, c 1 c Maximum percentage of Originai thickness (a) 266.8 kcmil and smaller (b) Larger than 266.8 kcmil (See 6.2) Hot Creep Temperature, C 2c Elongation, Maximum percent Filled Unfilled Set, maximum percent Fi!ed * Unfilled (See 6.3) Absorption Coefficient minimum (1 000 Absorbance/Meter) (See 6
15、.4) INSULATION PHYSICAL REQUIREMENTS 70( ow-Polyethylene Low/ Linear Medium High Low Density Density Density Type I Type II Type Ill 0.9i0-0.925 0.925-0.940 0.940-0.960 1700 (11.7) 2300 (15.9) 2500 (17.3) 350 350 350 48 48 48 iOO iOO iOO 75 75 75 100 110 110 30 30 30 10 10 10 ICEA S-76-474-2011 Page
16、 15 goc Crosslinked Polyethylene 0.910-0.960 1800 (12.4) 250 168 i2i 75 150 100 175 5 10 A filled cross-linked polyethylene insulation is one which contains 10 percent or more of carbon black and/or mineral fi!ers by weight. An unfilled c.ro-ss!inked polyethylene insulation is one which contains les
17、s than 10 percent of carbon black and/or mineral fillers by weight. - In lieu of testing insulation removed from the conductor, a certification by the manufacturer of the polyethylene compound that this requirement has been complied with shall suffice. t The density ranges are applicable to the unco
18、lored, unfilled primary poiyethyiene component of the insuiation. 2011 by the Insulated Cable Engineers Association, Incorporated ICEA S-76-474-2011 Page 15 Section 4 CABLE ASSEMBLIES AND IDENTIFICATION 4.1 CABLE ASSEMBLIES 4. i. i Twisted Assemblies One or more phase conductors shall be t.Jisted ar
19、ound the neutral conductor withm.-t fi!ers with a !ay of 25 to 60 times tt!e finished diameter of one of the phase c.onductors. The phase conductors shall have the same direction of twist as that of the outer layer of wires in the neutral conductor. 4.1.2 Parallel Assemblies Parallel assemblies may
20、be used with aluminum phase conductors and aluminum, ACSR, ACSRiAW, or alloy 6201-T81 neutrals. The aluminum phase conductors shall be laid flat and parallel to an aluminum 1350, ACSR, ACSRIAW, or aluminum allov 6201-T81 neutral. The neutral shall be on the outside of the assemblv and shall be bound
21、 to the phase cOnductor or conductors with a suitable aluminum wire or strip having a breaking strength not less than 150 pounds (667 N) and applied with a lay of three to six inches. 4.1.3 s.z Assemblies (Reverse Twist) The aluminum phase conductor(s) shall be twisted around a 1350, ACSR, ACSRIAW,
22、or aluminum alloy 6201-T81 neutral conductor without fillers with a lay of 40 to 60 inches (1.02 to 1.52 m). Phase lay direction shall reverse every 1 to 1.5 times the nominal lay length. The assembly shall be bound together by a binder with a maximum lay length of 12 inches (0.305 m). 4.2 MANUFACTU
23、RERS IDENTIFICATION (OPTIONAL) The outer surface oi the phase conductor of a duplex assembly, and of one Oi mon; of the phase conductors of a triplex or quadruplex assembly, may be durably and legibly marked throughout its length. The tegend, if used, shalt be repeated at a maximum interval of 1 met
24、er_ When ink sufface printing is used, the legend shall be printed in a contrasting color. 2011 by the Insulated Cable Engineers Association. Incorporated Section 5 ICEA S-76-474-2011 Page 17 PERFORMANCE REQUIREMENTS FOR FINISHED CABLES 5.0 GENERAL Requirements for finished cables are in addition to
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