1、Safety Standard for Electrical and Electronic Test, Measuring, Controlling,and Related EquipmentPartial Revision and Redesignation of ANSI C39.5-1974Approved 18 February 1988ISAS82.031988STANDARD Copyright 1988 by the Instrument Society of America. All rights reserved. Printed in the UnitedStates of
2、 America. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form or by any means (electronic, mechanical, photocopying, recording, orotherwise), without the prior written permission of the publisher.ISA67 Alexander DriveP.O. Box 12277Research Triangle
3、Park, North Carolina 27709ISA-S82.03 Safety Standard for Electrical and Electronic Test, Measuring, Controlling, and Related EquipmentISBN 1-55617-102-1ISA-S82.03-1988 3PrefaceThis preface is included for information purposes and is not part of ANSI/ISA-S82.03.This standard has been prepared as part
4、 of the service of ISA toward a goal of uniformity in the field of instrumentation. To be of real value, this document should not be static, but should be subject to periodic review. Toward this end, the Society welcomes all comments and criticisms, and asks that they be addressed to the Secretary,
5、Standards and Practices Board, ISA, 67 Alexander Drive, P.O. Box 12277, Research Triangle Park, NC 27709, telephone (919) 549-8411, e-mail: standardsisa.org.The ISA Standards and Practices Department is aware of the growing need for attention to the metric system of units in general, and the Interna
6、tional System of Units (SI) in particular, in the preparation of instrumentation standards. The Department is further aware of the benefits to U.S.A. users of ISA standards of incorporating suitable references to the SI (and the metric system) in their business and professional dealings with other c
7、ountries. Toward this end, this Department will endeavor to introduce SI-acceptable metric units in all new and revised standards to the greatest extent possible. The Metric Practice Guide, which has been published by the Institute of Electrical and Electronics Engineers as ANSI/IEEE Std. 268-1982,
8、and future revisions will be the reference guide for definitions, symbols, abbreviations, and conversion factors.It is the policy of ISA to encourage and welcome the participation of all concerned individuals and interests in the development of ISA standards. Participation in the ISA standards-makin
9、g process by an individual in no way constitutes endorsement by the employer of that individual, of ISA, or of any of the standards that ISA develops.The information contained in the preface, footnotes, and appendices is included for information only and is not a part of the standard.The development
10、 of this standard dates back to 1958. The need for the standard arose from requests that recording instruments meet the requirement of the American National Standard, the National Electrical Code. At that time there was also the beginning of the need for examination of measuring instruments by testi
11、ng laboratories. The initial version of this standard was approved in 1964 after several years of careful development, review, and trial use.Work began on safety requirements for electrical measuring instruments at the international level at about the same time. While consideration of specific safet
12、y requirements for measuring apparatus was begun in 1965, resulting first editions of IEC Publications 348 and 414 became available in 1971 and 1973, respectively.American National Standard C39.5-1964 was reaffirmed in 1969 and revised in 1974. In 1982, responsibility for C39.5-1964 was transferred
13、to the ISA and the document was renumbered ISA-S82.01.This 1988 edition reflects four major considerations: The scope has been expanded to include more equipment types. The scope and organization now readily allow future inclusion of more types of related equipment. A major goal was harmonization to
14、 the extent possible with worldwide standards, especially North American and IEC Standards. Not only were the IEC clause and multi-4 ISA-S82.03-1988part formats adopted, but also many of the IEC requirements; many requirements were further defined and developed from the work of IEC Subcommittee 66E.
15、 Digital and microelectronic innovations have narrowed the one-time separation between digital and analog technologies and prompted commonality of safety requirements. Significant technical contributions were made by industry organizations and independent certifying laboratories.The following are si
16、gnificant features incorporated in this ongoing edition: Constructional requirements. Measurement of conformance to requirements is through the use of specific compliance statements. This allows the user of the standard to determine product compliance and to better understand the nature and intent o
17、f the requirements. Expansion of requirements for protection against fire and personal injury.The following people served as members of ISA Subcommittee SP82.03, which prepared this standard:NAME COMPANYBruce J. Feikle, Chairman OTISWilliam Calder, Manager Director The Foxboro CompanyAbraham Abramow
18、itz RetiredDavid Braudaway Sandia LaboratoriesJoseph E. Devine IBM Instruments, Inc.Charles G. Gross Gen Rad Inc.Robert G. Harris Underwriters LaboratoriesWalter F. Hart John Fluke Mfg. Co., Inc.W.R. Howard LFE CorporationWilliam H. Hulse, Jr. Material Safety Eng. Div.Donald S. Ironside Biddle Instr
19、umentsA. Walter Jacobson RetiredAl Kanode Hewlett-Packard CompanyRoger P. Lutfy Factory Mutual ResearchDonald A. Mader Underwriters Laboratories, Inc.Ernest C. Magison Honeywell, Inc.Richard C. Masek Bailey Controls Co.Frank J. McGowan The Foxboro CompanyRichard Nute Tektronix, Inc.Phillip A. Painch
20、aud RetiredWilliam A. Phillips Leeds orException: Supply circuits that are power-limited according to Subclause 14.2 of ISA-S82.01 and not live according to Sub-clause 9.2.1 above need not comply with the spacing requirements.Spacing requirements are not applied to the internal spacings of electroni
21、c devices.Compliance is checked by first applying and removing a 2-newton (0.5-pound) force against any wire or uninsulated part followed by measuring the creepage distance or clearance.9.4.2 Other circuits. The spacings in other circuits shall be additionally protected by a protective coating in co
22、mpliance with Sub-clause 13.2 of this standard.Exception: Where spacings are:1) at least those according to Table 9-1 of ISA-S82.01, or2) additionally protected by an equipment enclosure according to Clause 19 of this standard suitable for the intended environment.The spacings in other circuits are
23、evaluated according to Sub-clause 9.12 (dielectric voltage-withstand tests) of ISA-S82.01.Exception: Circuits that are power-limited according to Sub-clause 14.2 of ISA-S82.01 and not live according to Sub-clause 9.2 of this standard.9.4.3 Field wiring terminal parts. The requirements of Sub-clause
24、9.8.3 of ISA-S82.01 shall apply.Exception: Circuits that are power-limited according to Sub-clause 14.2 of ISA-S82.01 and not live according to Sub-clause 9.2. of this standard.9.5 Dielectric voltage-withstand tests9.5.1 Supply circuits1) Type test.The requirements of Sub-clause 9.12.2 (1) of ISA-S8
25、2.01 shall apply.Exception: Circuits that are power-limited according to Sub-clause 14.2 of ISA-S82.01, and not live according to Sub-clause 9.21 of this standard.2) Routine test.The requirements of Sub-clause 9.12.2(2) of ISA-S82.01 shall apply except for the test potentials.The test potential, for
26、 supply circuits rated greater than extra-low voltage according to Sub-clause 14.1 of ISA-S82.01, shall be 1200 V rms at supply circuit frequency, or 1700 V dc, applied for one second. Alternately, the test potential shall be 1000 V rms at supply circuit frequency, or 1420 V dc, applied for one minu
27、te.18 ISA-S82.03-1988The test potential for extra-low voltage supply circuits according to Sub-clause 14.1 of ISA-S82.01 shall be 600 V rms at supply circuit frequency, or 860 V dc, applied for one second. Alternately, the test potential shall be 500 V rms at supply circuit frequency, or 707 V dc ap
28、plied for one minute.Exception: Circuits that are power-limited according to Sub-clause 14.2 of ISA-S82.01 and not live according to Sub-clause 9.2 of this standard.10 Testing under fault conditions10.1 Application of fault conditions. Fault conditions shall be applied to the equipment in the manner
29、 described in Clause 10 of ISA-S82.01.11 Mechanical requirements11.1 General. Equipment enclosures, or parts of the enclosure, required to be in place to comply with the requirements in this standard shall have mechanical strength and stability necessary to resist the abuse to which they may be subj
30、ected in their intended uses. The requirements of Clause 11 of ISA-S82.01 shall apply.Additional factors to be considered when evaluating process measurement and control equipment enclosures with regard to their intended uses include but are not limited to:1) resistance to corrosion,2) resistance to
31、 harmful solvents and gases.12 Protection from fire12.1 General. The requirements of Clause 12 of ISA-S82.01 shall apply.13 Component requirements and applications13.1 General. The requirements of Clause 13 of ISA-S82.01 shall apply and the requirements according to Sub-clause 13.2 below.ISA-S82.03-
32、1988 1913.2 Protective coatings. Where protective coatings are used according to Sub-clause 9.4 of this standard the suitability of the coating shall be determined by subjecting the equipment or the coated part of the equipment being evaluated to the tests specified in Sub-clauses 13.2.1 through 13.
33、2.4. The equipment shall not be operated during aging and humidity conditioning.13.2.1 AgingThe equipment (or the coated part of the equipment) being evaluated shall be aged by maintaining it at 90C 1C (194F 2F) for 96 hours. The test sample shall be removed from the aging chamber and subjected to a
34、 dielectric voltage-withstand test according to Sub-clause 13.2.3 of this standard.13.2.2 Humidity conditioningFollowing aging according to Sub-clause 13.2.1 of this standard, the equipment or the coated part of the equipment being evaluated shall be conditioned by maintaining it at 23C 1C (73F 2F)
35、and 96 2 percent relative humidity for 96 hours. The test sample shall be removed from the conditioning chamber and subjected to a dielectric voltage-withstand test according to Sub-clause 13.2.3 of this standard.13.2.3 Dielectric voltage-withstand testA test voltage according to Table 9-5 of ISA-S8
36、2.01 shall be applied for one minute without breakdown between adjacent circuits where coated spacings exists.13.2.4 AdhesionFollowing the tests of Sub-clause 13.2.1 and 13.2.2. above, the equipment or the coated part of the equipment being evaluated shall be investigated for adhesion of the coating
37、 where coated spacings exist, by scraping or cutting. The coating shall not flake.14 Extra-low voltage and power-limited circuits14.1 General. The requirements of Clause 14 of ISA-S82.01 shall apply.15 Terminal devices15.1 General. The requirements of Clause 15 of ISA-S82.01 shall apply and the req
38、uirements according to Sub-clause 15.2 below.15.2 Terminal screws. Wire-binding screws for field wiring terminals shall be selected according to Table 15-1.20 ISA-S82.03-1988Table 15-1 Wire-binding screws16 External cords16.1 General. The requirements of Clause 16 of ISA-S82.01 shall apply.17 Equipm
39、ent instructions17.1 General. The requirements of Clause 17 of ISA-S82.01 shall apply and the requirements according to Sub-clauses 17.2 and 17.3 below.Additional applicable safeguard information considered appropriate by the manufacturer may be included.Instructions according to this Clause may be
40、supplemented, but not replaced, by illustrations.Compliance is checked by inspection.17.2 Form of equipment instruction. Equipment instructions shall be in the form of either:1) a pamphlet, a folder, or data sheet(s) containing operator instructions and operational maintenance information; or2) a co
41、mbined operators and servicing manual; or3) an operators manual and a separate servicing manual.17.3 Equipment information and instructions. Operating and operational maintenance instruc-tions shall be separated from servicing instructions within the equipment instructions.17.3.1 Operating instructi
42、ons. With regard to equipment protections, the operating instructions shall:1) describe the equipment installation, including specifically:a) assembly, if required, and mounting,b) protective grounding means, if employed,c) intended supply circuit and connection of the equipment to the supply circui
43、t,d) ventilation consideration,e) the environmental conditions under which the equipment can be operated, andWire Size(AWG) 10 12 14Minimum Binding Screw Size10 8 6Compliance is checked by inspection.ISA-S82.03-1988 21f) additional protective means, if any, for equipment operated in sheltered or out
44、door locations;2) explain equipment markings, including specificallya) symbolsb) controlsc) terminal ratings;3) identify and describe interconnection witha) auxiliary and accessory equipmentb) other equipment;4) where operating instructions and servicing instructions are combined into a single manua
45、l and where servicing requires access to parts which could render electrical shock or replacement of a like component(s) is depended upon to provide extra-low voltage and power-limited circuits according to Clause 14 of ISA-S82.01, servicing instructions shall be preceded by a warning.The warning sh
46、all be prefaced by the signal word “WARNING“, anda) state that servicing requires access to parts which could render an electrical shock, and refer servicing only to qualified personnel;b) state that extra-low voltage and power-limited circuits are dependent upon replacement of live components;5) in
47、clude operational maintenance information.17.3.2 Servicing instructions. With regard to equipment protections, the servicing instructions shall include specifically:1) equipment calibration other than factory calibration;2) equipment maintenance;3) equipment repair, including any limitations thereto
48、18 Pressure-actuated equipment18.1 General. The requirements of this Clause are intended to:1) provide a means by which the pressure protections of fluid-pressure-actuated equipment can be verified (type tested);2) apply to fluid-pressure-actuated equipment employing flexible-metal bellows, diaphra
49、gms, Bourdon tubes, or the like that are rated for pressures between 2000 kPa and 175,000 kPa (300 and 25,000 psig); and3) apply to use of fluid-pressure-actuated equipment with ordinary benign fluids.Equipment rated above 175,000 kPa (25,000 psig) or actuated by hazardous fluids is special-purpose equipment outside the scope of this standard.22 ISA-S82.03-1988Compliance is checked by inspection and by performing the tests according to Sub-Clause 18.2 below.The maximum rated operating pressure used in conjunction with pressure test multipliers is th
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