1、 STANDARD FOR 600 VOLT RATED CABLES OF RUGGEDIZED DESIGN FOR DIRECT BURIAL INSTALLATIONS AS SINGLE CONDUCTORS OR ASSEMBLIES OF SINGLE CONDUCTORS Approved by AMERICAN NATIONAL STANDARDS INSTITUTE 7/19/2012 Publication # ANSI/ICEA S-81-570-2012 2012 by INSULATED CABLE ENGINEERS ASSOCIATION, Inc. ANSI/
2、ICEA S-81-570-2012 ANSI/ICEA Publication S-81-570-2012 Standard For 600 Volt Rated Cables of Ruggedized Design For Direct Burial Installation As Single Conductors Or Assemblies Of Single Conductors 7/19/2012 ANSI approval Date Prepared and Published by Insulated Cable Engineers Association P. O. Box
3、 1568 Carrollton, Georgia 30112, USA Copyright 2012 by the Insulated Cable Engineers, Incorporated. All rights including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International
4、and PanAmerican Conventions. ICEA S-81-570-2012 Page i 2012 by the Insulated Cable Engineers Association, Incorporated NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons engaged in the development and approval of the document at the
5、 time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. The Insulated Cable Engineers Association, Inc. (ICEA) standards and guideline publications, of which the document contained herein is o
6、ne, are developed through a voluntary consensus standards development process. This process brings together persons who have an interest in the topic covered by this publication. While ICEA administers the process and establishes rules to promote fairness in the development of consensus, it does not
7、 independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgements contained in its standards and guideline publications. ICEA disclaims liability for personal injury, property, or other damages of any nature whatsoever, whether special, indir
8、ect consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. ICEA disclaims and makes no guaranty or warranty, expressed or implied, as to the accuracy or completeness of any information published herein, and disclaims
9、and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. ICEA does not undertake to guarantee the performance of any individual manufacturer or sellers products or services by virtue of this standard or guide. In publishing and making this do
10、cument available, ICEA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is ICEA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgement or, as
11、 appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this publication may be available from other sources, which the user may wish to consult for additional views o
12、r information not covered by this publication. ICEA has no power, nor does it undertake to police or enforce compliance with the contents of this document. ICEA does not certify, test, or inspect products, designs, or installations for safety or health purposes. Any certification or other statement
13、of compliance with any health or safety-related information in this document shall not be attributable to ICEA and is solely the responsibility of the certifier or maker of the statement. ICEA S-81-570-2012 Page ii 2012 by the Insulated Cable Engineers Association, Incorporated Foreword This standar
14、d publication for 600 Volt rated cables of ruggedized design for direct burial installations as single conductors and assemblies of single conductors, ICEA S-81-570 was developed by the Insulated Cable Engineers Association, Inc. (ICEA) ICEA standards and guides are adopted in the public interest an
15、d are designed to eliminate misunderstanding between the manufacturer and the user and to assist the user in selecting and obtaining the proper product for his particular need. Existence of an ICEA standard or guide does not in any respect preclude the manufacture or use of products not conforming t
16、o the standard or guide. The user of this standard is cautioned to observe any health or safety regulations and rules relative to the manufacture and use of the cable made in conformity with this standard. Request for interpretation of this standard must be submitted in writing to the Insulated Cabl
17、e Engineers Association, Inc. Box 1568, Carrollton, Georgia, 30112. An official written interpretation will be provided. Suggestions for improvements gained in the use of this standard will be welcomed by the Association. . . ICEA S-81-570-2012 Page iii 2012 by the Insulated Cable Engineers Associat
18、ion, Incorporated Contents page Foreword ii Section 1 GENERAL 1.1 SCOPE1 1.2 CONSTRUCTIONS.1 1.3 DESIGN OPTIONS .1 1.3.1 Conductors1 1.3.2 Insulation1 1.3.3 Assembly .1 1.4 OPERATING CONDITIONS .1 1.4.1 Normal Service Temperature 2 1.4.2 Emergency Overload Temperature 2 1.4.3 Short Circuit Temperatu
19、re.2 1.5 QUALIFICATION 2 1.6 TESTING.2 1.7 TEST METHODS 2 1.8 STANDARDS AND SPECIFICATIONS3 Section 2 CONDUCTOR 2.0 GENERAL.4 2.1 PHYSICAL AND ELECTRICAL PROPERTIES.4 2.1.1 Copper Conductors 4 2.1.2 Aluminum Conductors 4 2.2 CONDUCTOR SIZE UNITS 4 2.3 CONDUCTOR DC RESISTANCE PER UNIT LENGTH.5 2.3.1
20、Direct Measurement of dc Resistance per Unit Length .5 2.3.2 Calculation of dc Resistance per Unit Length 5 2.4 CONDUCTOR DIAMETER .9 Section 3 INSULATION 3.1 INSULATION 3.1.1 75 C Normal Service Operation Insulation12 3.1.2 90 C Normal Service Operation Insulation12 3.1.3 Alternate Insulation12 3.2
21、 THICKNESS AND VOLTAGE REQUIREMENTS 13 ICEA S-81-570-2012 Page iv 2012 by the Insulated Cable Engineers Association, Incorporated page 3.3 ELECTRICAL REQUIREMENTS .13 3.3.1 Insulation Resistance 13 3.3.2 Voltage Test .14 3.3.2.1 Single Conductors 14 3.3.2.2 Twisted Assemblies14 3.3.2.3 Parallel Asse
22、mblies .14 3.4 PHYSICAL REQUIREMENTS 15 Section 4 ASSEMBLIES AND IDENTIFICATION 4.1 ASSEMBLIES .16 4.2 IDENTIFICATION16 4.2.1 Conductor Identification16 4.2.2 Neutral Identification16 Section 5 TEST METHODS 5.1 TEST TEMPERATURES 17 5.2 METHODS FOR MEASURING INSULATION PHYSICAL PROPERTIES17 5.3 METHO
23、D FOR MEASURING INSULATION HOT CREEP AND HOT SET 17 5.4 METHOD FOR MEASURING THE ABSORPTION COEFFICIENT OF BLACK 75 C INSULATION WALL OUTER LAYER MATERIAL.17 5.5 METHOD OF MEASURING INSULATION HEAT DEFORMATION (DISTORTION) (THERMOPLASTIC MATERIALS 75 C RATED) 17 Section 6 QUALIFICATION TEST 6.1 SUIT
24、ABILITY OF INSULATION FOR USE ON AC CIRCUITS IN WET LOCATIONS 18 6.1.1 Qualification.18 6.1.2 Insulation Resistance Stability18 6.1.2.1 Minimum Insulation Resistance at Rated Temperature18 6.1.2.2 Maximum Rate of Decrease19 6.2 MECHANICAL ABUSE RESISTANCE OF INSULATION.19 6.2.1 Qualification .19 6.2
25、.2 Sharp Impact.19 6.2.3 Blunt Impact .20 6.2.4 Abrasion 20 6.2.5 Crush .21 6.2.6 Puncture 21 6.2.7 Scoring 21 ICEA S-81-570-2012 Page v 2012 by the Insulated Cable Engineers Association, Incorporated page 6.3 METHOD FOR DETERMINING THE RESISTANCE TO ENVIRONMENTAL STRESS CRACKING OF 75 C INSULATION
26、WALL OUTER LAYER MATERIAL .23 6.3.1 Test Specimens .23 6.3.2 Test Procedure .23 6.4 THERMAL CRACK RESISTANCE OF CABLE WITH 90C INSULATION 23 6.5 ACCELERATED ELECTRICAL REQUIREMENTS IN WATER 24 6.6 SUNLIGHT RESISTANCE OF INSULATIONS 24 6.6.1 Qualification24 6.6.2 Sunlight Resistance24 6.6.2.1 Carbon
27、Arc Weather-O-Meter25 6.6.2.2 Xenon-Arc Weather-O-Meter25 6.6.2.3 Absorption Coefficient.25 Section 7 ENGINEERING INFORMATION 7.1 FLEXURE26 7.2 INSULATION RESISTANCE CONSTANT.26 APPENDICES A CONVERSION OF ENGLISH TO METRIC 27 B RECOMMENDED BENDING RADII FOR INSULATED CONDUCTORS AND CABLE ASSEMBLIES.
28、27 C MINIMUM DRUM DIAMETERS OF REELS FOR SINGLE CONDUCTORS AND ASSEMBLIES27 D TITLE AND DATE OF INDUSTRY STANDARDS REFERENCED IN THIS DOCUMENT28 E FLEXURE TEST SET-UP .29 ICEA S-81-570-2012 Page vi 2012 by the Insulated Cable Engineers Association, Incorporated LIST OF TABLES page 1-1 Maximum Operat
29、ing Temperature .1 2-1 Schedule for Establishing Maximum Direct Current Resistance per Unit Length of Completed Cable Conductors 6 2-2 Nominal Direct Current Resistance in Ohms per 1000 ft at 25 C of Solid and Concentric Lay Stranded Conductor.7 2-2 (Metric) Nominal Direct Current Resistance in Ohms
30、 per Kilometer at 25 C of Solid and Concentric Lay Stranded Conductor.8 2-3 Nominal Diameters for Copper and Aluminum Conductors.9 2-3 (Metric) Nominal Diameters for Copper and Aluminum Conductors .10 2-4 Factors for Determining Nominal Resistance per 1000 Feet at 25 C of Stranded Conductors.11 2-5
31、Weight Increment Factors 11 3-1 Conductor Sizes, Insulation Thickness and Test Voltages 13 3-2 Insulation Physical Requirements.15 6-1 Insulation Resistance .18 6-2 Abuse Resistance Properties .22 6-3 Insulation Physical Requirements (Qualification) .23 6-4 Accelerated Electrical Requirements24 ICEA
32、 S-81-570-2012 Page 1 2012 by the Insulated Cable Engineers Association, Incorporated Section 1 GENERAL 1.1 SCOPE This standard applies to the materials, constructions, and testing of single conductor cables and assemblies of completed single conductor cables used for the distribution of electrical
33、energy at phase-to-phase voltages not exceeding 600 volts or phase to ground not exceeding 480 V, and at temperatures not exceeding 75 C or 90 C, as applicable to the construction. It requires the use of ruggedized extruded insulations to improve the resistance of the cable to certain forms of mecha
34、nical damage associated with their intended use as directly buried Secondary Distribution and Service Cables. These cables, when operated within the voltage and temperature limits stated herein, are also suitable for use in other types of installations under the conditions normally associated with t
35、hose installations. 1.2 CONSTRUCTIONS Single conductor cables and assemblies of single conductor cables shall use conductors not smaller than 8 AWG and not larger than 1,000 kcmil. The conductors of a duplex assembly shall be of the same size. When allowed, the neutral in an assembly of three cables
36、 for use in single-phase 3-wire circuits, or the neutral in an assembly of four cables, may be reduced but shall not be less than 50% of the cross-sectional area of one phase conductor. 1.3 DESIGN OPTIONS The use of this standard should recognize that it covers many options. The user should select t
37、he necessary options required for a complete description of the desired cable. 1.3.1 Conductors Metal - aluminum 1350, AA-8000 series aluminum alloy, copper. Size - 8 AWG to 1000 kcmil Conductor Stranding - See Part 2. 1.3.2 Insulation 75 C or 90 C Rated - See Part 3.1. 1.3.3 Assembly - See Part 4.1
38、. Twisted or parallel - Two or more insulated conductors without an overall covering. 1.4 OPERATING CONDITIONS The design and construction of the cable shall be such that the cable will operate satisfactorily under maximum conductor temperatures as shown in Table 1-1. Table 1-1 Maximum Operating Tem
39、perature Conductor Temperature, C Insulation Rating Normal Service Emergency Overload Short Circuit 75 75 95 150 90 90 130 250 Exception: When adequate knowledge of the thermal characteristics of a cable environment is lacking, the permissible conductor temperature should be reduced by 10 C or in ac
40、cordance with available data. ICEA S-81-570-2012 Page 2 2012 by the Insulated Cable Engineers Association, Incorporated 1.4.1 Normal Service Temperature The 75 C or 90 C “Normal Service“ temperature is the highest allowable temperature that may be attained by the hottest portion of a cable line duri
41、ng daily operating load cycles. It may be used in ampacity calculations where adequate information is known about the overall thermal characteristics of the environment to assure that the normal service temperature will not be exceeded. 1.4.2 Emergency Overload Temperature The 95 C or 130 C “Emergen
42、cy Overload“ temperatur e is the highest allowable temperature that may be attained by the hottest portion of a cable line during an emergency. Operation at that overload temperature shall not exceed 100 hours in any twelve consecutive months or 500 hours during the lifetime of the cable. 1.4.3 Shor
43、t Circuit Temperature The 150 C or 250 C “Short Circuit“ temperature is the highest allowable temperature that may be attained by an insulated conductor along any part of a cable line during a short circuit of a specified magnitude and number of cycles. (See ICEA Publication P-32-382) 1.4.4 The “Rat
44、ed Voltage“ for the purpose of this standard is 600 volts phase-to-phase. 1.5 QUALIFICATION Each manufacturer shall qualify their cable. The Qualification Tests in Part 6 and Engineering Information Tests in Part 7 are intended to demonstrate the capability of the manufacturer to furnish cables with
45、 the desired performance characteristics. Except as noted below an insulation resistance stability test, six abuse resistance tests, and a sunlight resistance test shall be made initially on cable specimens whenever an insulating material is changed. Insulations containing greater than 2.0 wt. % car
46、bon black and having an average particle diameter of 35 nm or less are not required to be sunlight resistance tested. A flexure test shall be performed for Engineering Information only. All data shall be recorded and retained. If requested, a manufacturer shall furnish copies of his qualification te
47、sts on cable specimens with the type of insulation being supplied. 1.6 TESTING All cables shall comply with the requirements given in Parts 2, 3, and 4. A program of sampling frequencies is given in ICEA Publication T-26-465/NEMA WC 54, if a frequency is not provided in this standard. 1.7 TEST METHO
48、DS When cables are tested for the requirements in Parts 2, 3, or 4, the test method shall be in accordance with ICEA Publication T-27-581/NEMA WC 53. ICEA S-81-570-2012 Page 3 2012 by the Insulated Cable Engineers Association, Incorporated 1.8 STANDARDS AND SPECIFICATIONS In this standard, units are
49、 most often expressed in the English System. To convert from an English unit to the appropriate metric unit, multiply the value of the English unit by the appropriate number from Appendix A. U.S. customary units, except for temperature, are specified throughout this standard. Approximate International System of Units (SI) equivalents are included for information only. A list of standards an
