oSIST prEN IEC 61010-2-201:2020
(Main)Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-201: Particular requirements for control equipment
Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-201: Particular requirements for control equipment
This clause of Part 1 is applicable, except as follows.
1.1.1 Equipment included in scope
Replacement:
This part of IEC 61010 specifies safety requirements and related verification tests for control equipment and/or their associated peripherals.
Some equipment examples are:
- programmable logic controller (PLC);
- programmable automation controller (PAC);
- distributed control systems (DCS);
- industrial PC (computers) and panel PC;
- programming and debugging tools (PADTs);
- displays and human-machine interfaces (HMI);
- any product performing the function of control equipment and/or their associated peripherals;
- positioners; and
- control equipment which have as their intended use the command and control of machines, automated manufacturing and industrial processes, e.g. discrete and continuous control.
Components of the above named equipment and in the scope of this standard are e.g.:
- (auxiliary) stand-alone power supplies;
- peripherals such as digital and analogue I/O,
- remote-I/O;
- industrial network equipment, embedded or standalone (e.g. switches, routers, wireless base station).
Control equipment and their associated peripherals are intended to be used in an industrial environment and may be provided as OPEN or ENCLOSED EQUIPMENT.
NOTE 1 Control equipment intended also for use in other environments or for other purposes (example: for use in building installations to control light or other electrical installations, or for use on cars, trains or ships) can have additional conformity requirements defined by the safety standard(s) for these applications. These requirements can involve as example: insulation, spacings and power restrictions.
NOTE 2 Computing devices and similar equipment within the scope of IEC 60950 (planned to be replaced by IEC 62368) and conforming to its requirements are considered to be suitable for use with control equipment within the scope of this standard. However, some of the requirements of IEC 60950 for resistance to moisture and liquids are less stringent than those in IEC 61010-1:2010, 5.4.4 second paragraph.
Control equipment covered in this standard is typically intended 237 for use in OVERVOLTAGE CATEGORY II (IEC 60664-1) in low-voltage installations, where the RATED equipment supply voltage does not exceed AC. 1 000 V r.m.s. (50/60 Hz), or DC 1 000 V.
Where control equipment is intended for installation to supply systems with overvoltage category III or IV, additional requirements are identified in Annex K.
The requirements of ISO/IEC Guide 51 and IEC Guide 104, as they relate to this part of IEC 61010, are incorporated herein.
1.1.2 Equipment excluded from scope
Replacement:
This standard does not deal with aspects of the overall automated system, e.g. a complete assembly line. Control equipment (e.g. DCS and PLC), their application program and their associated peripherals are considered as components (components in this context are items which perform no useful function by themselves) of an overall automated system.
Since control equipment (e.g. DCS and PLC) are component devices, safety considerations for the overall automated system including installation and application are beyond the scope of this standard. Refer to IEC 60364 series of standards or applicable national/local regulations for electrical installation and guidelines.
1.2.1 Aspects included in scope
Replace first sentence:
The purpose of the requirements of this standard is to ensure that all HAZARDs to the OPERATOR, SERVICE PERSONNEL and the surrounding area are reduced to a tolerable level.
NOTE By using the terms "OPERATOR" and "SERVICE PERSONNEL" this standard considers the perception of HAZARDS depending on training and skills. Annex AA gives a general approach in this regard.
1.2.2 Aspects excluded from scope
Replacement:
This standard does not cover:
a)[...]
b)[...]
c)[...]
d)[...]
e)[...]
Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2-201: Besondere Anforderungen für Steuer- und Regelgeräte
Exigences de securité pour appareils électriques de mesurage, de régulation et de laboratoire - Partie 2-201: Exigences particulières pour les équipements de commande
Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko uporabo - 2-201. del: Posebne zahteve za opremo za nadzor in upravljanje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 61010-2-201:2020
01-november-2020
Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko
uporabo - 2-201. del: Posebne zahteve za opremo za nadzor in upravljanje
Safety requirements for electrical equipment for measurement, control, and laboratory
use - Part 2-201: Particular requirements for control equipment
Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2
-201: Besondere Anforderungen für Steuer- und Regelgeräte
Exigences de securité pour appareils électriques de mesurage, de
régulation et de laboratoire - Partie 2-201: Exigences particulières pour
les équipements de commande
Ta slovenski standard je istoveten z: prEN IEC 61010-2-201:2020
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
oSIST prEN IEC 61010-2-201:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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65/822/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61010-2-201 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2020-09-04 2020-11-27
SUPERSEDES DOCUMENTS:
65/782/CD, 65/798A/CC
IEC TC 65 : INDUSTRIAL-PROCESS MEASUREMENT, CONTROL AND AUTOMATION
SECRETARIAT: SECRETARY:
France Mr Rudy BELLIARDI
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 66
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
TITLE:
Safety requirements for electrical equipment for measurement, control, and laboratory use - Part
2-201: Particular requirements for control equipment
PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
Copyright © 2020 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
elect ronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
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1 CONTENTS
2 CONTENTS . 2
3 FOREWORD . 4
4 INTRODUCTION . 7
5 1 Scope and object . 8
6 2 Normative references . 9
7 3 Terms and definitions . 10
8 4 Tests . 12
9 5 Marking and documentation . 13
10 6 Protection against electric shock . 15
11 7 Protection against mechanical HAZARDS . 30
12 8 Resistance to mechanical stresses . 31
13 9 Protection against the spread of fire . 32
14 10 Equipment temperature limits and resistance to heat . 37
15 11 Protection against HAZARDS from fluids and solid foreign objects . 44
16 12 Protection against radiation, including laser sources, and against sonic and
17 ultrasonic pressure . 44
18 13 Protection against liberated gases and substances, explosion and implosion . 44
19 14 Components and subassemblies . 44
20 15 Protection by interlocks . 48
21 16 HAZARDS resulting from application . 48
22 17 RISK assessment . 49
23 Annexes . 50
24 Annex E (informative) Guideline for reduction of POLLUTION DEGREES . 51
25 Annex F (normative) ROUTINE TESTS . 53
26 Annex L (informative) Index of defined terms . 55
27 Annex AA (informative) General approach to safety for control equipment . 56
28 Annex BB (informative) System drawing of isolation boundaries . 58
29 Annex CC (informative) Historical techniques for secondary circuits . 69
30 Annex DD (normative) Flammability test for magnesium alloy fire ENCLOSUREs or
31 flame barriers (see 9.3.2) . 73
32 Annex EE (informative) Information/documentation and correlation to its uses . 74
33 Annex FF (informative) Measurement of CLEARANCES and CREEPAGE DISTANCES . 76
34 Bibliography . 79
35
36 Figure 101 – Typical INTERFACE/PORT/TERMINAL diagram of control equipment . 18
37 Figure 102 – Examples of insulation between separate circuits and between circuits
38 and ACCESSIBLE conductive parts . 23
39 Figure 103 – Mechanical HAZARDS, with regard to PANEL MOUNTED EQUIPMENT . 30
40 Figure 104 – Spread of fire HAZARDS, with regard to PANEL MOUNTED EQUIPMENT . 34
41 Figure 105 – General temperature test environment . 39
42 Figure 106 – Vented equipment . 41
43 Figure 107 – Non-vented equipment . 42
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44 Figure 108 – PANEL MOUNTED EQUIPMENT extending through the wall of the end location
45 ENCLOSURE . 43
46 Figure AA.1 – Control equipment access and safety concerns . 56
47 Figure BB.1 – Typical system ENCLOSURE layout . 58
48 Figure BB.2 – Simplified system schematic . 60
49 Figure BB.3 – HAZARD situation of the control equipment . 61
50 Figure BB.4 – Application of the standard to the control equipment safety drawing . 62
51 Figure BB.5 – Application of 6.7.1.5 items a) and b) to the control equipment safety
52 drawing . 62
53 Figure BB.6 – Application of 6.7.1.5 items a), b), c) and d) to the control equipment
54 safety drawing . 63
55 Figure BB.7 – REINFORCED INSULATION . 63
56 Figure BB.8 – BASIC INSULATION . 64
57 Figure BB.9 – REINFORCED INSULATION, BASIC INSULATION and impedance . 65
58 Figure BB.10 – REINFORCED INSULATION from external power supplies . 66
59 Figure BB.11 – BASIC INSULATION from external power supplies . 67
60 Figure EE.1 – Information/documentation for component products . 74
61 Figure EE.2 – Information/documentation accumulation and segregation tree for an
62 example installation . 75
63 Figure FF.1 – The path a component mounted to a PWB (side view). 77
64 Figure FF.2 – The path a component mounted to a PWB (side view). 77
65
66 Table 101 – INTERFACES, PORTS AND TERMINALS considered as OPERATOR ACCESSIBLE
67 for OPEN and ENCLOSED EQUIPMENT . 17
68 Table 4 – CLEARANCE and CREEPAGE DISTANCES for MAINS CIRCUITs of OVERVOLTAGE
69 CATEGORY II up to 300 V. 26
70 Table 5 – Test voltages for solid insulation between MAINS and between MAINS and
71 secondary circuits OVERVOLTAGE CATEGORY II up to 300 V . 27
72 Table 6 – CLEARANCES and test voltages for secondary circuits derived from MAINS
73 s of OVERVOLTAGE CATEGORY II up to 300 V . 28
CIRCUIT
74 Table 19 – Surface temperature limits, under NORMAL CONDITION . 38
75 Table E.1 – Environmental situations . 51
76 Table E.2 – Reduction of POLLUTION DEGREES (PD) . 52
77 Table CC.1 – Limits of output current and output power for inherently limited power
78 sources . 71
79 Table CC.2 – Limits of output current, output power and RATINGS for over-current
80 protective devices for non-inherently limited power sources . 72
81 Table FF.1 – Dimensions of X . 76
82
83
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84 INTERNATIONAL ELECTROTECHNICAL COMMISSION
85 ____________
86
87 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
88 FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
89
90 Part 2-201: Particular requirements for control equipment
91
92 FOREWORD
93 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
94 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
95 international co-operation on all questions concerning standardization in the electrical and electronic fields. To
96 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
97 Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
98 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
99 in the subject dealt with may participate in this preparatory work. International, governmental and non-
100 governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
101 with the International Organization for Standardization (ISO) in accordance with conditions determined by
102 agreement between the two organizations.
103 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
104 consensus of opinion on the relevant subjects since each technical committee has representation from all
105 interested IEC National Committees.
106 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
107 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
108 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
109 misinterpretation by any end user.
110 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
111 transparently to the maximum extent possible in their national and regional publications. Any divergence
112 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
113 the latter.
114 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
115 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
116 services carried out by independent certification bodies.
117 6) All users should ensure that they have the latest edition of this publication.
118 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
119 members of its technical committees and IEC National Committees for any personal injury, property damage or
120 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
121 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
122 Publications.
123 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
124 indispensable for the correct application of this publication.
125 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
126 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
127 International Standard IEC 61010-2-201 has been prepared by IEC technical committee 65:
128 Industrial-process measurement, control and automation.
129 The text of this standard is based on the following documents:
CD Report on voting
IEC 61010-2-201 Ed3.0 65/xxx/RVC
130
131 Full information on the voting for the approval of this standard can be found in the report on
132 voting indicated in the above table.
133 This third edition cancels and replaces the second edition published in 2017. This edition
134 constitutes a technical revision.
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135 This third edition includes the following significant technical changes with respect to the
136 previous edition;
137 a) 1.1.1 The related equipment of the standard have been clarified
138 b) 4.3.2.101 The Optical fiber module has been deleted.
139 c) 5.4.3 Equipment installation has been clarified.
140 d) 6.7.1.1 Revision of the figure of insulation between separate circuits has been included.
141 e) 6.7.101 The sub-clause of insulation for FIELD WIRING TERMINALS of OVERVOLTAGE
142 CATEGORY ll with a nominal voltage up to 1 000 V has been deleted.
143 f) 6.7.1.101 A new sub-clause of insulation for SELV/PELV circuits has been included.
144 g) 6.8.3 Specification of voltage tester has been added.
145 h) 6.9.3 Additional exception of color coding has been included.
146 i) 6.9.101 A new sub-clause of wiring for secondary circuits e.g. SELV/PELV has been
147 included.
148 j) 8.2.2.101 Additional requirements of Glass displays have been included.
149 k) 8.3 A subclause of Drop test has been removed.
150 l) 9.3.2 Additional requirements for material of connectors and insulating material has been
151 included.
152 m) The particular requirements for nonmetallic material has been clarified.
153 n) 11 The particular requirements for Protection against HAZARDS from fluid and solid
154 foreign objects has been removed.
155 o) 12.4 Additional subclause of Microwave radiation has been included.
156 p) 14.102 The description of Switching devices has been clarified.
157 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
158 This Part 2-201 is to be used in conjunction with third edition of IEC 61010-1 (2010), including
159 its amendment 1 (2016).
160 This Part 2-201 supplements or modifies the corresponding clauses in IEC 61010-1 so as to
161 convert that publication into the IEC standard: Particular requirements for control equipment.
162 Where a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
163 as far as is reasonable. Where this part states “addition”, “modification”, “replacement”, or
164 “deletion”, the relevant requirement, test specification or NOTE in Part 1 should be adapted
165 accordingly.
166 In this standard, the following print types are used:
167 – requirements and definitions: in roman type;
168 – NOTE in smaller roman type;
169 – conformity and tests: in italic type;
170 – terms used throughout this standard which have been defined in Clause 3: SMALL ROMAN
171 CAPITALS.
172 A list of all parts in the IEC 61010 series, published under the general title “Safety
173 requirements for electrical equipment for measurement, control and laboratory use”, can be
174 found on the IEC website.
175 The committee has decided that the contents of this publication will remain unchanged until
176 the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
177 related to the specific publication. At this date, the publication will be
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178 • reconfirmed,
179 • withdrawn,
180 • replaced by a revised edition, or
181 • amended.
182
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
183
184
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185 INTRODUCTION
186 IEC 61010-2-2xx documents are a series of standards on safety of industrial-process
187 measurement, control and automation equipment.
188 This part specifies the complete safety related requirements and related tests for control
189 equipment (e.g. programmable controller (PLC), the components of distributed control
190 systems (DCS), I/O devices, human machine interface (HMI)).
191 Safety terms of general use are defined in IEC 61010-1. More specific terms are defined in
192 each part of IEC 61010.
193
194
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195 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
196 FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
197
198 Part 2-201: Particular requirements for control equipment
199
200
201
202 1 Scope and object
203 This clause of Part 1 is applicable, except as follows.
204 1.1.1 Equipment included in scope
205 Replacement:
206 This part of IEC 61010 specifies safety requirements and related verification tests for control
207 equipment and/or their associated peripherals.
208 Some equipment examples are:
209 • programmable logic controller (PLC);
210 • programmable automation controller (PAC);
211 • distributed control systems (DCS);
212 • industrial PC (computers) and panel PC;
213 • programming and debugging tools (PADTs);
214 • displays and human-machine interfaces (HMI);
215 • any product performing the function of control equipment and/or their associated
216 peripherals;
217 • positioners; and
218 • control equipment which have as their intended use the command and control of
219 machines, automated manufacturing and industrial processes, e.g. discrete and
220 continuous control.
221 Components of the above named equipment and in the scope of this standard are e.g.:
222 • (auxiliary) stand-alone power supplies;
223 • peripherals such as digital and analogue I/O,
224 • remote-I/O;
225 • industrial network equipment, embedded or standalone (e.g. switches, routers, wireless
226 base station).
227 Control equipment and their associated peripherals are intended to be used in an industrial
228 environment and may be provided as OPEN or ENCLOSED EQUIPMENT.
229 NOTE 1 Control equipment intended also for use in other environments or for other purposes (example: for use in
230 building installations to control light or other electrical installations, or for use on cars, trains or ships) can have
231 additional conformity requirements defined by the safety standard(s) for these applications. These requirements
232 can involve as example: insulation, spacings and power restrictions.
233 NOTE 2 Computing devices and similar equipment within the scope of IEC 60950 (planned to be replaced by
234 IEC 62368) and conforming to its requirements are considered to be suitable for use with control equipment within
235 the scope of this standard. However, some of the requirements of IEC 60950 for resistance to moisture and liquids
236 are less stringent than those in IEC 61010-1:2010, 5.4.4 second paragraph.
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237 Control equipment covered in this standard is typically intended for use in OVERVOLTAGE
238 CATEGORY II (IEC 60664-1) in low-voltage installations, where the RATED equipment supply
239 voltage does not exceed AC. 1 000 V r.m.s. (50/60 Hz), or DC 1 000 V.
240 Where control equipment is intended for installation to supply systems with overvoltage
241 category III or IV, additional requirements are identified in Annex K.
242 The requirements of ISO/IEC Guide 51 and IEC Guide 104, as they relate to this part of
243 IEC 61010, are incorporated herein.
244 1.1.2 Equipment excluded from scope
245 Replacement:
246 This standard does not deal with aspects of the overall automated system, e.g. a complete
247 assembly line. Control equipment (e.g. DCS and PLC), their application program and their
248 associated peripherals are considered as components (components in this context are items
249 which perform no useful function by themselves) of an overall automated system.
250 Since control equipment (e.g. DCS and PLC) are component devices, safety considerations
251 for the overall automated system including installation and application are beyond the scope
252 of this standard. Refer to IEC 60364 series of standards or applicable national/local
253 regulations for electrical installation and guidelines.
254 1.2.1 Aspects included in scope
255 Replace first sentence:
256 The purpose of the requirements of this standard is to ensure that all HAZARDs to the
257 OPERATOR, SERVICE PERSONNEL and the surrounding area are reduced to a tolerable level.
258 NOTE By using the terms "OPERATOR" and "SERVICE PERSONNEL" this standard considers the perception of
259 HAZARDS depending on training and skills. Annex AA gives a general approach in this regard.
260 1.2.2 Aspects excluded from scope
261 Replacement:
262 This standard does not cover:
263 a) reliability, functionality, performance, or other properties of the control equipment not
264 related to safety;
265 b) mechanical or climatic requirements for operation, transport or storage;
266 c) EMC requirements (see e.g. IEC 61326 or IEC 61131-2);
267 d) protective measures for explosive atmospheres (see e.g. IEC 60079 series);
268 e) functional safety (see e.g. IEC 61508, IEC 61131-6).
269 2 Normative references
270 This clause of Part 1 is applicable, except as follows.
271 Addition:
272 IEC 60384-14, Fixed capacitors for use in electronic equipment – Part 14: Sectional
273 specification: Fixed capacitors for electromagnetic interference suppression and connection to
274 the supply mains
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275 IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
276 Principles, requirements and tests
277 IEC 60695-2-11, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
278 Glow-wire flammability test method for end-products (GWEPT)
279 IEC 60695-11-3, Fire hazard testing – Part 11-3: Test flames – 500 W flames – Apparatus and
280 confirmational test methods
281 IEC 60947-5-1, Low-voltage switchgear and controlgear – Part 5-1: Control circuit devices
282 and switching elements – Electromechanical control circuit devices
283 IEC 61010-1:2010, Safety requirements for electrical equipment for measurement, control,
284 and laboratory use – Part 1: General requirements
285 IEC 61010-2-030, Safety requirements for electrical equipment for measurement, control, and
286 laboratory use – Part 2-030: Particular requirements for testing and measuring circuits
287 IEC 61051-2, Varistors for use in electronic equipment – Part 2: Sectional specification for
288 surge suppression varistors
289 IEC 61643-21, Low voltage surge protective devices – Part 21: Surge protective devices
290 connected to telecommunications and signalling networks – Performance requirements and
291 testing methods
292 IEC 61643-311, Components for low-voltage surge protective devices – Part 311:
293 Performance requirements and test circuits for gas discharge tubes (GDT)
294 IEC 61643-321, Components for low-voltage surge protective devices – Part 321:
295 Specifications for avalanche breakdown diode (ABD)
296 IEC 61643-331, Components for low-voltage surge protective devices – Part 331:
297 Specification for metal oxide varistors (MOV)
298 IEC 61810-1, Electromechanical elementary relays - Part 1: General and safety requirements
299 3 Terms and definitions
300 This clause of Part 1 is applicable, except as follows.
301 3.1.3
302 PORTABLE EQUIPMENT
303 Modification:
304 equipment intended to be carried by hand and not fixed during NORMAL USE
305 3.2.3
306 PROTECTIVE CONDUCTOR TERMINAL
307 Modification:
308 In this part “PROTECTIVE CONDUCTOR TERMINAL” is replaced by “PROTECTIVE EARTH TERMINAL”.
309 Note 1to entry: PROTECTIVE EARTH TERMINAL is most familiar to industrial users, manufacturers, etc. Therefore
310 since this part is targeted towards industrial use, the most familiar term is utilized.
311 Add the following terms and definitions:
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312 3.2.4
313 ENCLOSURE
314 Replacement:
315 housing affording the type and degree of protection suitable for the intended application
316 [SOURCE: IEC 60050-195:1998, 195-02-35]
317 3.101
318 AMBIENT TEMPERATURE
319 temperature, determined under prescribed conditions, of the air surrounding the equipment
320 3.102
321 ENCLOSED EQUIPMENT
322 equipment which includes an ENCLOSURE, having safety capability, or combination of an
323 ENCLOSURE, having safety capability, and installation provisions enclosing on all sides, with
324 the possible exception of its mounting surface, to prevent personnel from accidentally
325 touching HAZARDOUS LIVE, ho
...
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