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1、A N S I C37-44 41 ILB 0724150 0004250 T A- 3/- 19 . ANSI C37.44-1981 specifications for distribution oil cutouts and fuse links Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 04:
2、53:50 MDTNo reproduction or networking permitted without license from IHS -,-,- A N S I C37.q4 81 a 0724350 0004251 3 ANSI C37.44-1981 Revision of ANSI C37.44-1969 American National Standard Specifications for Distribution Oil Cutouts and Fuse Links Secretariat Institute of Electrical and Electronic
3、s Engineers National Electrical Manufacturers Association . Approved May 22,1980 American National Standards Institute, Inc Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 04:53:5
4、0 MDTNo reproduction or networking permitted without license from IHS -,-,- A N S I C37-44 BI W 0724150 0004252 3 American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as
5、a guide to aid the manu- facturer, the consumer, and the general public. The existence of an American National Stan- dard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not c
6、onforming to the standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest editions. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require th
7、at action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by American N
8、ational Standards Institute 1430 Broadway, New York, New York 10018 Copyright O 1981 by American National Standards Institute, Inc All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of t
9、he publisher. Printed in the United States of America A 1 M 3 8 1 142 5 Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 04:53:50 MDTNo reproduction or networking permitted without
10、 license from IHS -,-,- A N S I C37-44 BL I 0724350 0004253 5 W (This Foreword is not a part of American National Standard Specifications for Distribution Oil Cutouts and Foreword Fuse Links, ANSI C37.44-1981.) This standard is a revision of American National Standard Specifications for Distribution
11、 Oil Cutouts and Fuse Links, ANSI C37.44-1969, to bring it up to date and in line with present day requirements for high-voltage fuses and switches. .This standard was prepared by the C37 Subcommittee on High-Voltage Fuses with cooperation from the IEEE Subcommittee on High-Voltage Fuses and from NE
12、MA. Liaison was maintained with EEI and IEC during the revision process in order to incorporate the latest thinking up to the time of publication, This publication is one of a series of complementary American National Standards covering various types of high-voltage fuses and switches, so arranged t
13、hat certain of the standards apply to all devices, while each of the other standards provides additionalspecifications for a particular device. For any device, ANSI/IEEE C37.40-198 1, ANSIIIEEE C37.41-1981, plus the additional standard covering that device constitute a complete standard for the devi
14、ce. In addition, ANSI C37.48-1969 is an application, operation, and maintenance guide for all the devices. The following American National Standards make up this series: American National Standard Service Conditions and Definitions for High-Voltage Fuses, Distri- bution Enclosed Single-Pole Air Swit
15、ches, Fuse Disconnecting Switches, and Accessories, ANSI/ IEEE C37.40-1981 American National Standard Design Tests for High-Voltage Fuses, Distribution Enclosed Single- Pole Air Switches, Fuse Disconnecting Switches, and Accessories, ANSI/IEEE C37.41-198 1 American National Standard Specifications f
16、or Distribution Cutouts and Fuse Links, ANSI C37.42-198 1 This revision includes pertinent data formerly contained in ANSI C37.43. The C37.43 standard is dropped as redundant. American National Standard Specifications for Distribution Oil Cutouts and Fuse Links, ANSI American National Standard Speci
17、fications for Distribution Enclosed Single-Pole Air Switches, American National Standard Specifications for Power Fuses and Fuse Disconnecting Switches, American National Standard Specifications for Distribution Fuse Disconnecting Switches, Fuse Supports, and Current Limiting Fuses, ANSI C37.47-198
18、1 American National Standard Guide for Application, Operation, and Maintenance of Distribu- tion Cutouts and Fuse Links, Secondary Fuses, Distribution Enclosed Single-Pole Air Switches, Power Fuses, Fuse Disconnecting Switches, and Accessories, ANSI C37.48- 1969 C37.44-1981 ANSI C37.45-1981 ANSI C37
19、.46-1981 Suggestions for improvement of this standard will be welcome. They should be sent to the American National Standards Institute, 1430 Broadway, New York, N.Y. 10018. This standard was processed and approved for submittal to ANSI by American National Stan- dards Committee on Power Switchgear,
20、 C37. Committee approval of the standard does not Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 04:53:50 MDTNo reproduction or networking permitted without license from IHS -,-,
21、- A N S I C37-44 81 Is 0724350 OOOL254 7 W necessarily imply that all the committee members voted for its approval. At the time it ap- proved this standard, the C37 Committee had the following members: C. L. Wagner, Chairman D. J. Polasky, Co-Secretariat Organization Represented Name of Representati
22、ve Association of Iron and Steel Engineers J. M. Tillman Electric Light and Power Group. J. E. Beehler D. O. Craghead H. G. Darron H. G. Frus J. D. Hendrix K. G. Adgate (Alt) R. L. Capra (Alt) R. L. Lindsey (Alt) E. E. Ramm (Alt) Institute of Electrical and Electronics Engineers, . H. H. Fahnoe R. E
23、. Friedrich M. J. Maier H. W. Mikulecky G. W. Walsh H. F. White M. J. Beachy (Alt) R. A. McMaster (Alt) C. A. Mathews (Alt) D. C. Musgrave (Alt) National Electrical Manufacturers Association A. P. Colaiaco R. W. Dunham D. G. Portman G. A. Wilson W. R. Wilson Tennessee Valley Authority. R. C. St. Cla
24、ir Testing Laboratory Group. L. Frier E. J. Huber R. W. Seelbach (Ait) U.S. Department of the Army. . R. H. Bruck E. M. Tomsic J. N. Montagna A. R. Hanks (Alt) . e U.S. Department of the Interior, Bureau of Reclamation . . . . . . . . . . . . . . . . US. Department of the Navy, Navy Construction Bat
25、allion Center . . . . . . . . . . The C37 Subcommittee on High-Voltage Fuses, which developed this standard, had the follow- ing members: R. H. Arndt, Chairman D. J. Polasky, Co-Secretariat M. J. Beachy R. E. Bennett F. L. Cameron L. Cavic A. M. DiCiocci0 R. A. Few G. P. Gill C. H. Griffin S. Lampe
26、J. R. Marek H. W. Mikulecky W. W. Olive A. M. Salazar J. G. St. Clair E. W. Schmunk G. D. Smith R. B. Steel E. E. Steven H. E. Swanson K. Behrendt (Ait) Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not f
27、or Resale, 07/03/2007 04:53:50 MDTNo reproduction or networking permitted without license from IHS -,-,- . A N S I C37.44 83 0724350 0004.255 7 = 0 The IEEE High-Voltage Fuse Subcommittee had the following members: H. W. Mikulecky, Chairman R. H. Amundson J. G. Angelis E. H. Arjeski R. H. Arndt L. R
28、. Beard R. Bennett R. F. Burnett F. L. Cameron A. DuPont H. H. Fahnoe G. P. Gill R. E. Koch J. R. Marek H. G. Reid W. H. Russell E. W. Schmunk H. E. Swanson The NEMA High-Voltage Fuse Technical Committee had ,the following members: F. L. Cameron, Chairman D. J. Polasky; Secretary L. R. Beard R. E. B
29、ennett F. L. Cameron J. Fox G. P. Gill J. R. Marek H. L. Miller H. A. Norberg W. W. Olive R. L. Robertson R. B. Steel H. E. Swanson J. S. Wall J. G. Angelis (Ait) R. Ball (Alt) R. A. Few (Alt) Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employ
30、ees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 04:53:50 MDTNo reproduction or networking permitted without license from IHS -,-,- PAGE Contents 1 . Scope . 7 2 . Rating . 7 2.1 Rating Information 7 2.2 Rated Continuous Current . 7 2.3 Overload and Thermal Ratings . 8 2.4 RatedVoltages
31、 . 8 2.5 RatedFrequency., 8 2.6 Rated Interrupting Current for Distribution Oil Fuse Cutouts 2.7 Rated Load-Break Current of Distribution Oil Cutouts . 8 2.8 Basic Impulse Insulation Level (BIL) of Distribution Oil Cutouts 2.9 Rated Making Current (Making Current Rating) of Distribution Oil Cutouts.
32、 2.10 Rated Short-Time Currents of Distribution Oil Cutouts 3 . Interchangeability Requirements . 3.1 Electrical Interchangeability 8 3.2 Mechanical Interchangeability 9 4.1 DielectricTests . 9 4.2 Interrupting Tests . 9 4.3 Load-Break Tests 9 4.4 Making Current Tests. 10 4.5 Radio-Influence Tests.
33、10 4.6 Short-Time Current Tests for Disconnecting Cutouts 10 4.7 Temperature-Rise Limitations . 10 4.8 Time-Current Tests for Fuse Links 10 5 . Conformance Tests for Distribution Oil Cutouts . 11 6 . NameplateMarking 11 6.1 Distribution Oil Cutouts 11 6.2 FuseLinks 11 6.3 Shipping Container for Fuse
34、 Links 11 7 . Application Requirements 11 Basis for Selection of Rated Voltage of Distribution Oil Cutouts Guide for Selection of Rated Voltage of Distribution Oil Cutouts 7.3 Coordination Factor for Operating Variables . 11 7.4 Coordination Charts 11 8 8 8 8 8 4 . Design Test Requirements 9 . 7.1 7
35、.2 11 11 . . . . . . . . . . . 8 Revision of American National Standards Referred to in This Document. Tables 11 Table 1 Rated Symmetrical Interrupting Currents Table 2 Rated Short-Time Currents . Table 3 Line-to-Ground Dielectric Test Voltages . Table 4 Limits of Radio-Influence Voltage 8 9 9 10 Co
36、pyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 04:53:50 MDTNo reproduction or networking permitted without license from IHS -,-,- A N S I C37.44 81 P 072i150 0004257 2 American Nat
37、ional Standard Specifications for Distribution Oil Cutouts and FuseLinks 1. Scope This standard applies to high-voltage fuses (above 600 volts) and accessories for alternating-current distribu- tion systems as follows: (1) Distribution oil cutouts (2) Fuse housings, fuse supports, fuse mountings, an
38、d fuse links, a11 of the type used exclusively with dis- tribution oil cutouts (3) Removable switch blades for distribution oil cutouts. 2. Rating 2.1 Rating Information 2.1.1 Ratings for Distribution O i l Cutouts. The ratings of distribution oil cutouts shall include; (1) Rated continuous current,
39、 determined by the temperature-rise design tests at the rated continuous current specified in 4.7. These tests shall be made under the usual service conditions specified in 2.1 of American National Standard Service Conditions and Definitions for High-Voltage Fuses, Distribution En- closed Single-Pol
40、e Air Switches, Fuse Disconnecting Switches, and Accessories, ANSI/IEEE C37.40-198 1. (2) Rated maximum voltages, determined by the dielectric and current interrupting design tests speci- fied in 4.1 and 4.2, at altitudes up to 3300 feet (1000 meters), as specified in 2.1 of ANSI/IEEE C37.40-1981 (3
41、) Rated frequency, as specified in 2.1 of ANSI/ (4) Rated interrupting current in terms of available IEEE C37.40-1981. rms short-circuit current, determined by the current interrupting design tests specified in 4.2 (5) Basic impulse insulation level (BIL), determined by the impulse withstand tests s
42、pecified in 4.1. (6) Rated load-break current (when provision is made for load-break operation), determined by the de- sign tests specified in 4.3. (7) Rated making current in terms of available rms short-circuit current, determined by the making cur- rent tests specified in 4.4. (8) Rated short-tim
43、e currents, momentary, 15 cycle and 3 second, determined by the design tests specified in 4.6. 2.1.2 Ratings for Fuse Links for Distribution Oil Cutouts. The ratings of fuse links for distribution oil cutouts shall include: (I) Rated continuous current, determined by the temperature-rise design test
44、s specified in 4.7 and the electrical interchangeability requirements specified in 3.1. (2) Rated maximum voltage, determined by the highest rated voltage fuse cutout in which the fuse link is designed to be used. 2.1.3 Performance Characteristics of Distribution Oil Cutouts. The performance charact
45、eristics of distri- bution oil cutouts shall include: ages, as specified in 4.1. (I) Normal-frequency dry- or wet-withstand volt- (2) Temperature-rise limitations, as specified in 4.7. (3) Radio-influence levels, as specified in 4.5. 2.1.4 Performance Characteristics of Fuse Links for Distribution O
46、il Cutouts. The performance charac- teristics of distribution fuse links for use in distribution oil fuse cutouts shall include: (1) Melting-time-current characteristics, specified as the electrical interchangeability requirements in 3.1 and determined as specified in 4.8. (2) Total clearing-time-cu
47、rrent characteristics, determined as specified in 4.8. NOTE: These time-current characteristics shall be presented as curves, as specified i n 12.3 of American National Standard Design Tests for High-Voltage Fuses, Distribution Enclosed Single-Pole Air Switches, Fuse Disconnecting Switches, and Acce
48、ssories, ANSI/IEEE C37.41-1981. 2.2 Rated Continuous Current Oil Cutouts. The continuous current rating of oil fuse and disconnecting cutouts shall be 100,200, and 300 amperes. 2.2.2 Rated Continuous Current of Distribution Fuse Links. The rated continuous current of fuse links for use in distribution oil fuse cutouts has not been standardized as yet. 2.2.1 Rated Continuous Current of Distribution 7 Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 04:53:50