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17、#23#23#23#23IEEE Std 48-2009 (Revision of IEEE Std 48-1996) IEEE Standard for Test Procedures and Requirements for Alternating-Current Cable Terminations Used on Shielded Cables Having Laminated Insulation Rated 2.5 kV through 765 kV or Extruded Insulation Rated 2.5 kV through 500 kV Sponsor Insulat
18、ed Conductors Committee of the IEEE Power +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. iv Copyright 2009 IEEE. All rights reserved. Introduction This introduction is not part of
19、 IEEE Std 48-2009, IEEE Standard for Test Procedures and Requirements for Alternating-Current Cable Terminations Used on Shielded Cables Having Laminated Insulation Rated 2.5 kV through 765 kV or Extruded Insulation Rated 2.5 kV through 500 kV. This standard supersedes IEEE Std 48-1996, IEEE Standar
20、d Test Procedures and Requirements for Alternating-Current Cable Terminations 2.5 kV through 765 kV. This standard has been harmonized with IEEE Std 404-2006 B21ato allow for simultaneous testing of terminations and joints. Definitions specific to this standard are contained in Clause 3. All other d
21、efinitions and terminology used herein can be found in The IEEE Standards Dictionary: Glossary of Terms Table 1 is for cable terminations rated 2.5 kV to 46 kV, and the Table 2 is for cable terminations rated 69 kV to 500 kV. In Clause 8, 8.2.1, provisions have been made to allow either the 10 s or
22、the 60 s precipitation test. Subclause 8.4.3 for leak test has been completely rewritten. Clause 9 has been expanded to include a pollution severity guide to assist the user in defining a particular environment and helping determine the type of termination and creepage length needed. Clause 10 has b
23、een added to discuss the effects of solar radiation and test methods are recommended. The user is also advised to refer to the manufacturer for contamination testing, particularly if difficult environments are encountered. Notice to users Laws and regulations Users of these documents should consult
24、all applicable laws and regulations. Compliance with the provisions of this standard does not imply compliance to any applicable regulatory requirements. Implementers of the standard are responsible for observing or referring to the applicable regulatory requirements. IEEE does not, by the publicati
25、on of its standards, intend to urge action that is not in compliance with applicable laws, and these documents may not be construed as doing so. aThe numbers in brackets correspond to those of the bibliography in Annex A. bThe IEEE Standards Dictionary: Glossary of Terms provides external insulation
26、 between the cable conductor(s) and ground; and provides a seal to the end of the cable against the entrance of the external environment and maintains the operating design pressure, if any, of the cable system. This class is divided into the following three types: 1) Class 1A: For use on extruded di
27、electric cable 2) Class 1B: For use on laminated dielectric cable 3) Class 1C: Expressly for pressurized cable systems 2IEC publications are available from the Central Office of the International Electrotechnical Commission, Case Postale 131, 3 rue de Varemb, CH-1211, Geneva 20, Switzerland (http:/w
28、ww.iec.ch/). IEC publications are also available in the United States from the American National Standards Institute, Customer Service Department, 25 W. 43rd Street, 4th Floor, New York, NY 10036, USA (http:/www.ansi.org/). 3IEEE publications are available from the Institute of Electrical and Electr
29、onics Engineers, 445 Hoes Lane, Piscataway, NJ 08854, USA (http:/standards.ieee.org/). 4The IEEE standards or products referred to in Clause 2 are trademarks owned by the Institute of Electrical and Electronics Engineers, Incorporated. 5The IEEE Standards Dictionary: Glossary of Terms or column 7 of
30、 Table 3. This test is used if the termination is for use on laminated cable (all classes) or if there is a question on external metallic hardware affecting the RIV if the termination is for use on any other cable (all classes). f) Lightning impulse voltage withstand test in accordance with 8.4.1.6
31、(all classes) and the values specified in one of the following: 1) Table 1, column 6, for extruded dielectric cable terminations rated 2.5 kV to 46 kV. 2) Table 2, column 6, for extruded dielectric cable terminations rated 69 kV to 500 kV. 3) Table 3, column 9, for laminated dielectric cable termina
32、tions. g) Wet (or dry) switching impulse voltage withstand test (if applicable) in accordance with 8.4.1.11 (all classes) and the values specified in one of the following: 1) Table 2, column 12, for extruded dielectric cable terminations rated 69 kV to 500 kV. 2) Table 3, column 10, for laminated di
33、electric cable terminations h) DC voltage 15 min dry withstand test in accordance with 8.4.1.5 (all classes) and tested in accordance with 8.2 and column 11 of Table 1, Table 2, or Table 3. i) Cyclic aging test in accordance with 8.4.2 (all classes) and the values specified in one of the following:
34、1) Table 1, column 7, for extruded dielectric cable terminations rated 2.5 kV to 46 kV. 2) Table 2, column 7, for extruded dielectric cable terminations rated 69 kV to 500 kV. 3) Table 3, column 6, for laminated dielectric cable terminations. NOTESome Class 3 terminations, especially above 15 kV, ma
35、y not meet impulse requirements in column 6 of Table 1 or Table 2 or column 9 of Table 3: usually because of inadequate creepage length. If so, actual values shall be agreed upon by manufacturer and user, but must meet the BIL of the equipment connected to the termination. 7.1.2 Pressure leak tests
36、All Class 1 terminations shall be pressure leak tested in accordance with 8.4.3 as follows: a) Fluid-filled terminations tested in accordance with 8.4.3.1 b) Non fluid-filled terminations tested in accordance with 8.4.3.2 7.2 Routine tests NOTE 1Because of the variety of termination designs and mate
37、rials, especially with polymeric terminations, each manufacturer generally specifies and performs its own particular routine and quality assurance tests. It is impractical to establish standard routine tests that will be applicable to every situation. Therefore, other routine tests may be performed
38、as agreed upon by the manufacturer and user in addition to those listed herewith. IEEE Std 48-2009 IEEE Standard for Test Procedures and Requirements for Alternating-Current Cable Terminations Used on Shielded Cables Having Laminated Insulation Rated 2.5 kV through 765 kV or Extruded Insulation Rate
39、d 2.5 kV through 500 kV 8 Copyright 2009 IEEE. All rights reserved. a) Dielectric tests: See NOTE 10 of Table 1 or Table 2. A dielectric test on the termination insulator in accordance with 8.5.1 (all classes). b) Partial discharge tests: As an option, partial discharge tests in accordance with 7.1.
40、1 item d) can be used. NOTE 2The following leak test applies only to factory-manufactured termination insulators. Termination insulators fabricated on the cable in the field cannot be given this test. c) Leak tests: A leak test on all pressure-tight parts and factory-assembled seals in accordance wi
41、th 8.5.2 (Class 1C). 7.3 Installed field tests See NOTE 10 of Table 1 or Table 2. Field tests are tests that may be made in accordance with 8.6 on the completely installed cable system (including the cable terminations) by the user as an installation acceptance or proof test (all classes). The value
42、s listed in column 11 of Table 1, Table 2, or Table 3 are not intended to be the test voltages for a given rated voltage cable system, but are only to serve as a guide for the maximum voltage that the cable termination may be expected to withstand under normal conditions without flashover or without
43、 affecting its dielectric characteristics. The magnitude of the actual test voltage to be used for the installed cable system shall be determined by reference to applicable AEIC or ICEA (B1 through B6), and NEMA 107-1988 B23 cable specifications. The cable termination manufacturer shall be consulted
44、 before conducting any field tests that exceed the values listed in Table 1, Table 2, or Table 3. NOTESome cable insulation may be damaged by direct voltage field tests. The cable manufacturer should be consulted before testing. See IEEE Std 400.1-2007 B20 for information on the possible detrimental
45、 effects of dc testing on polymeric cables. Transformers, regulators, and other equipment that cannot be disconnected from the cable system while conducting the field test, should be investigated to be sure that the withstand voltage strength of this equipment is not exceeded. IEEE Std 48-2009 IEEE
46、Standard for Test Procedures and Requirements for Alternating-Current CableTerminations Used on Shielded Cables Having Laminated Insulation Rated 2.5 kV through 765 kV or Extruded Insulation Rated 2.5 kVthrough 500 kV 9 Copyright 2009 IEEE. All rightsreserved.Table 1Standard dielectric testvalues fo
47、r medium-voltage extruded dielectric cable terminations rated 2.5 kV to 46 kVInsulation class (kV)(NOTE 12)Nominal voltage-to-ground (kV rms) (NOTE 13)Minimum partial dischargevoltage level(kV rms) (NOTE 11)AC voltage 1 min drywithstand (kV rms) AC voltage 10 s wet withstand (kV rms) (NOTE 3)Lightni
48、ng impulse(BIL) voltage withstand (kV crest)(NOTE 4)Cyclic aging (kV rms) AC voltage 5 min withstand (kV rms) AC voltage 5 h drywithstand (kV rms) AC voltage 1 min drywithstand (termina-tions and joints) (kV rms) DC voltage 15 min drywithstand (kV avg) (NOTE 9)Wet (dry)switching impulse(BSL) voltage
49、 withstand (kV crest)(NOTES 3 & 4)Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8 Column 9 Column 10 Column 11 Column 12 2.51.42 20 20 60 4 6 5 9 30 NA 5 2.95 25 25 75 9 13 10 18 35 NA 8 4.67 35 30 95 14 21 16 23 45 NA 15 8.713 50 45 110 26 39 31 35 75 NA 25 14.422 65 60 150 43 65 50 52 105 NA 35 20.230 90 80 200 61 91 71 69 140 NA 46 26.640 120 100 250 67 100 80 80 172 NA NOTE 1Power frequency includes anyfrequencyfrom 48Hz to 62Hz. NOTE 2All withstand values are test voltageswithout negative tolerancebut may include anatmosphericcorrectio
