ISA 12 12 01-2015 Nonincendive Electrical Equipment for Use in Class I and II Division 2 and Class III Divisions 1 and 2 Hazardous (Classified) Locations.pdf

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1、 AMERICAN NATIONAL STANDARD ANSI/ISA-12.12.01-2015 CAN/CSA C22.2 NO. 213-15 Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations Approved 21 August 2015 Second Printing 17 November 2015 Commitment for Amendments Thi

2、s standard is issued jointly by the Canadian Standards Association (operating as “CSA Group”) and the International Society of Automation (ISA). Comments or proposals for revisions on any part of the s tandard may be submitted to CSA or ISA at any time. Revisions to this standard will be made only a

3、fter processing according to the standards development procedures of CSA and ISA. CSA will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ISA will incorporate the same revisions into a new edition of the standard bearing the sam

4、e date of issue as the CSA pages. CSA and ISA are separate and independent entities and each is solely responsible for its operations and business activities. The CSA trade names and trademarks depicted in this document are the sole property of the Canadian Standards Association (CSA). The ISA trade

5、 names and trademarks depicted in this document are the sole property of ISA. ISBN: 978-1-4883-0155-1 2015 CSA Group All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. This standard is subject to review five years

6、from the date of publication, and suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquirescsagroup.org and include “Proposal for change“ in the subject line: Standard designation (number); releva

7、nt clause, table, and/or figure number; wording of the proposed change; and rationale for the change. To purchase CSA Group Standards and related publications, visit CSA Groups Online Store at shop.csa.ca or call toll-free 1-800-463-6727 or 416-747-4044. ISBN: 978-1-941546-66-6 Copyright 2015 ISA Al

8、l rights reserved. Not for resale. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permission of ISA. Canadian Standards Association CAN/CSA C22.2 NO. 213-15 ISA ANSI/ISA-12.12.01-2015 Nonincendive Electrical Equipment fo

9、r Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations 21 August 2015 This page intentionally left blank. ANSI/ISA-12.12.01-2015 5 CAN/CSA C22.2 NO. 213-15 Copyright 2015 ISA. All rights reserved. Preface In this second printing, the following changes w

10、ere made. In 15.5, Gasket test, the references at the end of the first paragraph and at the end of the last paragraph were corrected from 13.2 to 15.6. In Annex C, Suggested warnings with French equivalent, the column of French text (previously missing) was added. This preface, as well as all footno

11、tes and annexes, is included for information purposes and is not part of ANSI/ISA-12.12.01-2015. This document has been prepared as part 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

12、 periodic review. Toward this end, the Society welcomes all comments and criticisms and asks that they be addressed to the Secretary, Standards and Practices Board; ISA; 67 Alexander Drive; P. O. Box 12277; Research Triangle Park, NC 27709; Telephone (919) 549-8411; Fax (919) 549-8288; E-mail: stand

13、ardsisa.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 International System of Units (SI) in particular, in the preparation of instrumentation standards. The Department is further aware of the benefits to U

14、SA users of ISA standards of incorporating suitable references to the SI (and the metric system) in their business and professional dealings with other countries. Toward this end, this Department will endeavor to introduce SI-acceptable metric units in all new and revised standards, recommended prac

15、tices, and technical reports to the greatest extent possible. Standard for Use of the International System of Units (SI): The Modern Metric System, published by the American Society for Testing and Materials as IEEE/ASTM SI 10-97, and future revisions, will be the reference guide for definitions, sy

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23、EPARTMENT OF THE PATENT AND ITS OWNER. ADDITIONALLY, THE USE OF THIS DOCUMENT MAY INVOLVE HAZARDOUS MATERIALS, OPERATIONS OR EQUIPMENT. THE DOCUMENT CANNOT ANTICIPATE ALL POSSIBLE APPLICATIONS OR ADDRESS ALL POSSIBLE SAFETY ISSUES ASSOCIATED WITH USE IN HAZARDOUS CONDITIONS. THE USER OF THIS DOCUMEN

24、T MUST EXERCISE SOUND PROFESSIONAL JUDGMENT CONCERNING ITS USE AND APPLICABILITY UNDER THE USERS PARTICULAR CIRCUMSTANCES. THE USER MUST ALSO CONSIDER THE APPLICABILITY OF ANY GOVERNMENTAL REGULATORY LIMITATIONS AND ESTABLISHED SAFETY AND HEALTH PRACTICES BEFORE IMPLEMENTING THIS DOCUMENT. THE USER

25、OF THIS DOCUMENT SHOULD BE AWARE THAT THIS DOCUMENT MAY BE IMPACTED BY ELECTRONIC SECURITY ISSUES. THE COMMITTEE HAS NOT YET ADDRESSED THE POTENTIAL ISSUES IN THIS VERSION. The following people served as members of the Technical Harmonization Committee in the preparation of this standard: NAME COMPA

26、NY R. Masek, Chair CSA Group S. Czaniecki Endress e.g., soldering, brazing, welding, or the fusion of glass to metal. 3.9 incendive circuit a circuit, in which any arc or thermal effect produced under normal operating conditions, is capable of igniting the flammable gas-, vapor-, dust-air mixture, f

27、ibers or flyings. 3.10 maintenance, corrective any maintenance activity that is not normal in the operation of the equipment and requires access to the equipments interior. Such activities are expected to be performed by qualified personnel who are aware of the hazards involved. Such activities typi

28、cally include locating causes of faulty performance, replacing defective components, and adjusting service controls, or the like. 3.11 maintenance, operational any maintenance activity, excluding corrective maintenance, that is intended to be performed by the operator and is required for the equipme

29、nt to serve its intended purpose. Such operational maintenance activities typically include the correcting of “zero“ on a panel instrument, changing charts, keeping of records, and adding ink, or the like. 3.12 make/break component a component having contacts that can interrupt a circuit (even if th

30、e interruption is transient in nature). Examples of make/break components are relays, circuit breakers, servo potentiometers, adjustable resistors, switches, connectors, and motor brushes. Note: Installation codes refer to make-and-break and sliding contacts. 3.13 maximum external capacitance (Co or

31、 Ca) maximum value of capacitance in a circuit that can be connected to the connection facilities of the associated nonincendive field wiring apparatus. 3.14 maximum external inductance (Lo or La) maximum value of inductance in a circuit that can be connected to the connection facilities of t he ass

32、ociated nonincendive field wiring apparatus. 3.15 maximum external inductance to resistance ratio (Lo/Ro or La/Ra) ratio of inductance (Lo) to resistance (Ro) of any external circuit that can be connected to the connection facilities of the associated nonincendive field wiring apparatus. 3.16 maximu

33、m input current (Ii or Imax) maximum current (peak a.c. or d.c.) that can be applied to the connection facilities of the nonincendive field wiring apparatus. ANSI/ISA-12.12.01-2015 17 CAN/CSA C22.2 NO. 213-15 Copyright 2015 ISA. All rights reserved. 3.17 maximum input power (Pi) maximum power in an

34、external circuit that can be applied to the connection facilities of the nonincendive field wiring apparatus. 3.18 maximum input voltage (Ui or Vmax) maximum voltage (peak a.c. or d.c.) that can be applied to the connection facilities of the nonincendive field wiring apparatus. 3.19 maximum internal

35、 capacitance (Ci) total equivalent internal capacitance which is considered as appearing across the connection facilities of the nonincendive field wiring apparatus. 3.20 maximum internal inductance (Li) total equivalent internal inductance which is considered as appearing at the connection faci lit

36、ies of the nonincendive field wiring apparatus. 3.21 maximum internal inductance to resistance ratio (Li /Ri) ratio of inductance (Li) to resistance (Ri) that is considered as appearing at the connection facilities of the nonincendive field wiring apparatus. 3.22 maximum output current (Io or Isc) m

37、aximum output current (peak a.c. or d.c.) in a circuit that can be provided by the connection facilities of the associated nonincendive field wiring apparatus under normal operation. 3.23 maximum output voltage (Uo or Voc) maximum output voltage (peak a.c. or d.c.) in a circuit that can appear under

38、 open-circuit conditions at the connection facilities of the associated nonincendive field wiring apparatus under normal operation. 3.24 maximum output power (Po) maximum electrical power in a circuit that can be provided by the connection facilities of the associated nonincendive field wiring appar

39、atus under normal operation. 3.25 nonincendive circuit a circuit, other than nonincendive field wiring, in which any arc or thermal effect produced under normal operating conditions, is not capable of igniting the flammable gas-, vapor-, dust-air mixture, fibers or flyings. The circuit is evaluated

40、under prescribed test conditions. 3.26 nonincendive component a component having contacts for making or breaking an incendive circuit and the contacting mechanism is constructed so that the component, under normal operating conditions, is not ANSI/ISA-12.12.01-2015 18 CAN/CSA C22.2 NO. 213-15 Copyri

41、ght 2015 ISA. All rights reserved. capable of igniting the flammable gas or vapor-air mixture. The housing of a nonincendive component is not intended to exclude the flammable atmosphere or contain an explosion. The component is evaluated under prescribed test conditions. 3.27 nonincendive equipment

42、 equipment having electrical/electronic circuitry that is not capable, under normal operating conditions, of causing ignition of a specified flammable gas-, vapor-, dust-air mixture fibers or flyings due to arcing or thermal means. 3.28 nonincendive field wiring wiring that enters or leaves an equip

43、ment enclosure and, under normal operating conditions of the equipment, is not capable, due to arcing or thermal effects, of igniting the flammable gas -, vapor-, dust- air mixture, fibers or flyings. Normal operation includes opening, shorting, or grounding the field wiring. NOTE Extracted from NEC

44、. 3.29 nonincendive field wiring apparatus nonincendive equipment intended to be connected to nonincendive field wiring. NOTE The Canadian Electrical Code (CEC) does not use this term directly but the concept is supported in F11 of the CEC. 3.30 normal operating conditions conditions under which equ

45、ipment conforms electrically and mechanically with its design specification and is used within the conditions specified by the manufacturer. These conditions include a) supply voltage, current, and frequency; b) environmental conditions (including process interface); c) all tool-removable parts (e.g

46、., covers) in place; d) all operator-accessible adjustments at their most unfavorable settings; and e) opening or grounding of any one or shorting of any two of the nonincendive field-wiring conductors. 3.31 operator-accessible readily accessible to the operator during normal use without use of a to

47、ol. 3.32 plug-in component a lightweight connecting component not attached in any way outside of the connection points (similar to header jumpers, IC chips, snap-in fuses, some batteries and SD/PC cards). 3.33 sealed device a device so constructed that it cannot be opened during normal operating con

48、ditions or operational maintenance; it is sealed to restrict entry of an external atmosphere. ANSI/ISA-12.12.01-2015 19 CAN/CSA C22.2 NO. 213-15 Copyright 2015 ISA. All rights reserved. 3.34 service temperature maximum or minimum temperature reached at specific points of the equipment when the equip

49、ment is operating at rated conditions, including ambient temperature and any external sources of heating or cooling. NOTE 1 Equipment may reach different service temperatures in different parts or for different enclosure orientation s. NOTE 2 Rated conditions include the electrical supply and load, duty cycle or duty type, as assigned by the manufacturer, typically as shown in the marking. 3.35 unclassified locations locations determined to be neither Class I, Division 1; Class I, Division 2; Class I, Zone 0; Class I, Zone 1; Class I, Zone 2; Class II, Divi