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1、ANSI/IEEE C62.33-1982 (IEEE Reaffirmed 1988) (ANSI Reaffirmed 1989) An American National Standard IEEE Standard Test Specifications for Varistor Surge-Protective Devices Sponsor Surge Protective Devices Committee of the IEEE Power Engineering Society Approved September 17, 1981 Reaffirmed March 10,
2、1988 Reaffirmed March 17, 1994 IEEE Standards Board Approved July 1, 1983 Reaffirmed March 10, 1988 American National Standards Institute Copyright 1982 by The Institute of Electrical and Electronics Engineers, Inc 345 East 47th street, New York NY 10017, USA No part of this publication may be repro
3、duced in any form in an electronic retrieval system or otherwise, without prior written permission of the publisher. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 0
4、4/28/2007 23:22:42 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword (This Foreword is not a part of IEEE C62.33-1982, IEEE Standard Test Specifications for Varistor Surge-Protective Devices.) This test specification has been developed for the purpose of testing and
5、comparing varistor type surge protective devices. The varistor device is a surge diverter used for limiting transient overvoltages in power and communications circuits. Two types of material have been used for many years, silicon carbide, primarily in high voltage arresters, and metal oxide varistor
6、s. The interest in low voltage varistors has grown with the trend to highly sophisticated electrical and electronic devices which are exposed to surges from the environment. Initially, there were no standard terms or tests to define or compare these devices. The IEEE Surge Protection Devices Committ
7、ee formed its Low Voltage Surge Protection Devices Working Group in 1970 to define these parameters. Experts were drawn from many fields in communications and power utilities, electronic manufacturers and users, test equipment manufacturers and laboratories, and producers of varistors themselves. Th
8、e requirements, experiences and vocabularies of these representatives were melded to produce this document as a guide to potential users of varistor surge protective devices. At the time this standard was published it was under consideration for approval as an American National Standard. The America
9、n National Standards Committee C62 Surge Arresters had the following members at the time this document was sent to letter ballot. J. Koepfinger, Chairman Organization RepresentedName of Representative Association of American RailroadsL. M. Himmel, Sr Bonneville Power AdministrationEdward J. Yasuda R
10、ural Electrification AdministrationE. J. Cohen Electric Light and PowerR. A. Jones W. R. Ossman Vacant J. P. Markey (Alt) Institute of Electrical and Electronics EngineersJ. Koepfinger D. E. Hedman S. S. Kershaw, Jr J. D. M. Phelps E. J. Adolphson (Alt) J. J. Keane (Alt) Copyright The Institute of E
11、lectrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 MDTNo reproduction or networking permitted without license from IHS -,-,- iii When this standard was approved, the membership
12、of the Task Force on Solid-State Protective Devices of the Low- Voltage Surge-Protective Devices Working Group was: R. Odenberg, Chair L. Baker B. Braskich D. W. Hutchins T. F. Hock C. J. Kawiecki P. Richman L. D. Sweeney L. Williams B. I. Wolff G. Zappe Other individuals who contributed reviews and
13、 comments are: M. Flack G. L. Gaibrois J. L. Koepfinger F. D. Martzloff L. McAfee* E. C. Sakshaug P. D. Speranza *Chairman until 1980 At the time this standard was approved the membership of the Surge Protective Devices Committee of the IEEE Power Engineering Society was: G. L. Gaibrois, Chair P. W.
14、 Bogner, Vice Chair E. J. Yasuda, Secretary J. J. Archambault R. D. Ball C. L. Ballentine G. A. Baril M. J. Beachy F. G. Berg R. G. Black E. W. Boehne G. D. Breuer J. J. Burke E. J. Cohen M. Flack R. W. Flugum H. E. Foelker R. A. Frech E. A. Goodman C. D. Hansell G. S. Haralampu D. E. Hedman D. E. H
15、ellickson J. A. Hetrick A. R. Hileman D. W. Jackson I. B. Johnson S. S. Kershaw J. L. Koepfinger J. A. Mambuca F. D. Martzloff D. J. Melvold W. R. Ossman J. C. Osterhout M. Parente J. D. M. Phelps S. A. Potocny P. Richman E. C. Sakshaug National Electrical Manufacturers AssociationR. D. Ball C. R. C
16、linkenbeard D. W. Lenk J. Osterhout E. C. Sakshaug A. Sweetana Telephone GroupL. H. Sessler, Jr Underwriters LaboratoriesE. J. Huber R. W. Seelbach (Alt) Canadian Standards AssociationD. M. Smith Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with
17、 IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 MDTNo reproduction or networking permitted without license from IHS -,-,- iv J. J. Schlee P. Speranza E. R. Taylor A. C. Westrom A. G. Yost When the IEEE Standards Board approved this standard on Septem
18、ber 17, 1981, it had the following membership: Irvin N. Howell, Jr, Chair Irving Kolodny, Vice Chair Sava I. Sherr, Secretary G. Y. R. Allen J. J. Archambault James H. Beall John T. Boettger Edward Chelotti Edward J. Cohen Len S. Corey Jay Forster Kurt Greene Loering M. Johnson John L. Koepfinger J.
19、 E. May Donald T. Michael* J. P. Riganati F. Rosa Robert W. Seelbach Jay A. Stewart W. E. Vannah Virginius N. Vaughan, Jr Art Wall Robert E. Weiler *Member emeritus Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/111
20、1111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 MDTNo reproduction or networking permitted without license from IHS -,-,- v CLAUSEPAGE 1. Scope.1 1.1 1 1.2 1 1.3 1 1.4 1 2. A Description of Terms and Letter Symbols Used in Defining Varistors2 2.1 Rated Parameter Values. 2 2.2 Desc
21、riptions . 2 2.3 Basic Descriptions 3 3. Service Conditions5 3.1 Normal Service Conditions 5 3.2 Unusual Service Conditions. 6 4. Standard Design Test Procedure.7 4.1 Standard Design Test Criteria 7 4.2 Statistical Procedures. 7 4.3 Test Conditions 7 4.4 Clamping Voltage Test(Vc) (See Fig 3). 7 4.5
22、Rated Peak Single Pulse Transient Current Test (Itm) (See Fig 4) 8 4.6 Lifetime Rated Pulse Currents Tests (See Fig 3). 8 4.7 Rated RMS Voltage Test (Vm(ac) (See Fig 5), Rated DC Voltage Tests (Vm(dc) (See Fig 5). 10 4.8 DC Standby Current Test (ID) (See Fig 6). 10 4.9 Nominal Varistor Voltage Test
23、(VN(dc) and VN(ac) (See Fig 6) . 10 4.10 Rated Recurrent Peak Voltage Test (Vpm) (See Fig 5). . 11 4.11 Capacitance Test 12 4.12 AC Standby Power (Pd) (See Fig 7). . 12 5. Failure Modes .12 5.1 Short-Circuit Failure Mode 12 5.2 Degradation Failure Mode . 12 5.3 High Clamping Voltage Failure Mode. 13
24、 5.4 “Fail-Safe” Operation 13 6. Other Parameters.13 6.1 Rated Transient Energy 13 6.2 Rated Transient Average Power Dissipation (Pt(A V)m) 14 6.3 Voltage Overshoot (Vos) (See Fig 8) 14 6.4 Response Time, Overshoot Duration (See Fig 8) 15 7. Bibliography15 Copyright The Institute of Electrical and E
25、lectronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright The Institute of Electrical and Electronics Engineers, In
26、c. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 An American National Standard IEEE Standard Test Specifications for Varistor Surge-Protec
27、tive Devices 1. Scope 1.1 This standard applies to varistors for surge protective applications on systems with dc to 420 Hz frequency and voltages equal to or less than 1000 V rms, or 1200 V dc. This standard contains definitions, service conditions and a series of test criteria for determining the
28、electrical characteristics of these varistors. If the characteristics differ with the direction of conduction, then the tests determine characteristics for both polarities. Arresters covered by ANSI/IEEE C62.1-1984 11 are excluded from this standard. 1.2 The tests in this standard are intended as de
29、sign tests as defined in ANSI/IEEE Std 100-1984 3 and provide a means of comparison among various surge-protective devices. 1.3 Varistor surge-protective devices are used to provide transient overvoltage protection in electrical circuits. Varistors, as defined in ANSI/IEEE Std 100-1984 3, are device
30、s exhibiting a nonlinear volt-ampere characteristic. More specifically, this standard applies to such devices having a monotonic increase in voltage with increasing current flow. Because the impedance of the device decreases with increasing voltage, it provides a relatively low impedance path for su
31、rge voltages and a relatively high impedance at normal system voltage, before and after the occurrence of the surge. Test criteria and definitions in this standard provide a common engineering language beneficial to user and manufacturer of surge-protective varistor devices. 1.4 Due to the voltage a
32、nd energy levels employed in the majority of tests described herein, all tests should be considered hazardous and appropriate caution should be taken in their performance. 1The numbers in brackets correspond to the standards listed in the Bibliography, Section 7. of this standard. Copyright The Inst
33、itute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 MDTNo reproduction or networking permitted without license from IHS -,-,- 2Copyright 1982 IEEE All Rights Reserved I
34、EEE C62.33-1982IEEE STANDARD TEST SPECIFICATIONS FOR 2. A Description of Terms and Letter Symbols Used in Defining Varistors 2.1 Rated Parameter Values For the purpose of this standard, the values of rated parameters are established by the manufacturer, according to statistical acceptance criteria a
35、s indicated in 4.2. 2.2 Descriptions The descriptions of this section apply to varistors having symmetrical volt-ampere characteristics or asymmetrical volt-ampere characteristics. If the volt-ampere characteristics are different with the direction of conduction they are asymmetrical and the charact
36、eristic values shall be specified for each direction. Figure 1 illustrates the relationship between terms on a graph. Some terms are based on impulse response behavior. For the method of defining impulse waveforms see ANSI/IEEE Std 4-1978 2 and Fig 2 of this standard. Figure 1 Graph Illustrating Sym
37、bols and Definitions (a) Linear Coordinates (not to scale) (b) Logarithmic Coordinates (typical) Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 M
38、DTNo reproduction or networking permitted without license from IHS -,-,- Copyright 1982 IEEE All Rights Reserved3 VARISTOR SURGE-PROTECTIVE DEVICESIEEE C62.33-1982 Figure 2 Impulse Current Waveform 2.3 Basic Descriptions Subsections 2.3.1 through 2.3.6 give descriptions of terms and letter symbols u
39、sed in defining a varistor and are the minimum necessary to characterize the device. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 MDTNo reprodu
40、ction or networking permitted without license from IHS -,-,- 4Copyright 1982 IEEE All Rights Reserved IEEE C62.33-1982IEEE STANDARD TEST SPECIFICATIONS FOR Term and DescriptionSymbolReference 2.3.1 Clamping Voltage. Peak voltage across the Varistor measured under conditions of a specified peak pulse
41、 current and specified waveform. Note: Peak voltage and peak current are not necessarily coincidental in time. Vc see 4.4 and Fig 3 2.3.2 Rated Peak Single Pulse Transient Current (Varistor). Maximum peak current which may be ap- plied for a single 8/20 s impulse, with rated line voltage also applie
42、d, without causing device failure. Itm see 4.5 and Fig 4 2.3.3 Lifetime Rated Pulse Currents (Varistor). Derated values of Itm for impulse durations exceeding that of an 8/20 s waveshape, and for multiple pulses whichmay be applied over devices rated lifetime. see 4.6 and Fig 3 2.3.4 Rated RMS Volta
43、ge (Varistor). Maximum con- tinuous sinusoidal rms voltage which may be applied. Vm(ac) see 4.7 and Fig 5 2.3.5 Rated DC Voltage (Varistor). Maximum continuous dc voltage which may be applied. Vm(dc) see 4.7 and Fig 5 2.3.6 DC Standby Current (Varistor). Varistor current measured at rated voltage, V
44、m(dc). ID see 4.8 and Fig 6 2.4 Additional Descriptions. For certain applications some of the following terms may be useful. 2.4.1 Nominal Varistor Voltage. Voltage across the varistor measured at a specified pulsed dc current, IN(dc), of specific duration. IN(dc) is specified by the varistor manufa
45、cturer. VN(dc) see 4.9, 5.2 and Fig 6 2.4.2 Peak Nominal Varistor Voltage. Voltage across the varistor measured at a specified peak ac current, IN(ac), of specific duration. IN(ac) is specified by the varistor manufacturer. VN(ac) see 4.9 and Fig 6 2.4.3 Rated Recurrent Peak Voltage (Varistor). Maxi
46、mum recurrent peak voltage which may be applied for a specified duty cycle and waveform. Vpm see 4.10 and Fig 5 2.4.4 Rated Single Pulse Transient Energy (Varistor). Energy which may be dissipated for a single impulse of maximum rated current at a specified waveshape, with rated rms voltage or rated
47、 dc voltage also applied, without causing device failure. Wtm by evaluation, see 6.1 2.4.5 Rated Transient Average Power Dissipation (Varistor). Maximum average power which may be dissipated due to a group of pulses occurring within a specified isolated time period, without causing device failure. P
48、t(AV)m by evaluation, see 6.2 2.4.6 Varistor Voltage. Voltage across the varistor measured at a given current, Ix. Vx definition only, see Fig 1 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:22:42 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright 1982 IEE