Permissible Limits for Accessible PartsNormal Condition (6.3.1)• Voltage Levels US National Differences (to be in IEC 61010-1 3rd Edition the North American Harmonized Standard) 33 V rms 30 V rms 46.7 V peak 42.4 V peak 70 V dc 60 V dc 3
Permissible Limits for Accessible PartsSingle Fault Condition (6.3.2) Continued IEC 61010-1 3nd Edition National Differences 55 V rms 50 V rms 78 V peak 70 V peak 140 V dc 120 V dc Note: Sub-clauses 6.3.2 A 4
Figure 2DV - Maximum duration of short-term ACCESSIBLE voltages in SINGLE FAULT CONDITION (see 6.3.2 a)) Key A a.c. voltage level in WET LOCATIONS C d.c. voltage level in WET LOCATIONS B a.c. voltage level in dry locations D d.c. voltage level in dry locations
National Difference – Protective ConductorImpedance Continued• The test current is twice the rating of the attachment plug cap, but not less than 40 A.• If the equipment contains overcurrent protection devices for all poles of the MAINS supply, and if the wiring on the supply side of the overcurrent protection devices cannot become connected to ACCESSIBLE conductive parts in the case of a single fault, the test current need not be more than twice the RATED current of the internal overcurrent protection devices.• If the test current exceeds 500 A, see CSA 0.4. 7
National Difference – Protective Bondingimpedance Conformity Statement126.96.36.199DV D2 Modiﬁcation:• IEC - Conformity is checked by applying a test current of twice the value of the overcurrent protection means specified in the equipment installation instructions for the building supply MAINS CIRCUIT for 1 min between the PROTECTIVE CONDUCTOR TERMINAL and each ACCESSIBLE conductive part for which PROTECTIVE BONDING is required. The voltage between them shall not exceed 10 V a.c. r.m.s. or d.c.• In the ﬁrst sentence of the conformity statement, replace “1 min” with “the duration speciﬁed in Table 188.8.131.52DV.1”.• In the second sentence of the conformity statement, replace “10 V” with “4 V”. 9
National Difference - Connection to the MAINS supplysource and connections between parts of equipment Detachable MAINS supply cords with MAINS connectors according to IEC 60320 shall either meet the requirements of IEC 60799, or shall be RATED at least for the current RATING of the MAINS connector fitted to the cord. ND - 6.10.1DV.3 Delete the reference to the requirements of IEC 60799 for detachable MAINS supply cords in the sixth paragraph. ND - 6.10.1DV.4 Add the following paragraphs and new note after the sixth paragraph: ND - Requirements for MAINS cords or cord sets are contained in ANSI/UL 817 and CSA C22.2 No. 21. ND - Requirements for general use receptacles, attachment plugs, and similar wiring devices are contained in ANSI/UL 498 and CSA C22.2 No. 42, CSA C22.2 No. 182.1, CSA C22.2 No. 182.2, and CSA C22.2 No. 182.3. ND - NOTE This subclause only applies to cords connected to the external fixed MAINS socket-outlet and to external interconnecting mains cords. This subclause does not apply to cords fully contained within the equipment enclosure • Figure 9 explains the terminology for MAINS supply cords. • Conformity is checked by inspection and, where necessary, by measurement. 11
National Difference - 6.10.4DV.1 PERMANENTLY CONNECTEDEQUIPMENT• Addition of a new clause• Equipment intended for permanent connection to the MAINS shall meet the requirements of Annex DVD.• Conformity is checked as specified in Annex DVD.
National Difference – 6.11 Title Modification• 6.11 Disconnection from supply source• 6.11DV D2 Modiﬁcation of the title: Add “and maintaining polarity” to the end of the subclause title. 13
National Difference – 6.11.5DV D2 Polarity ofMAINS ConnectionsND - 6.11.5DV D2 Addition of a new sub-clause for Polarity ofConnections to the MAINS Circuit:• Any line-connected single-pole switch, any center contact of a lamp holder, and any automatic control with a marked off position shall be connected to a TERMINAL or lead intended for connection to the ungrounded conductor of the supply circuit. NOTE An “ungrounded” supply conductor is one that is not connected to protective earth at any point in the building installation. 14
• National Difference – 9.6.1. ADV Connection of overcurrent protective devicesAdded the following for connections of overcurrent protective devices• 9.6.1ADV.1 A single-pole circuit breaker must be connected to the ungrounded supply conductor• 9.6.1ADV.2 A multiple-pole circuit breaker must interrupt the neutral (grounded) and ungrounded conductors simultaneously.• 9.6.1ADV.3 A single fuse must be in the ungrounded conductor.• 9.6.1ADV.4 Fuses used in both the neutral (grounded) and ungrounded supply conductors must be adjacent with same ratings and characteristics.• 9.6.1ADV.5 Screw shell of a plug fuseholder and accessible contact of an extractor type fuseholder when: • Located in the Ungrounded supply conductor: shall be connected towards the load. • Located in the Neutral conductor: the shell shall be connected towards the neutral supply line. 15
• National Difference – 11.7.1. DV max. Pressure, referencing Annex G as normative for certain types• 11.7.1DV.1 Laboratory and Testing and Measurement equipment having both of the following characteristics shall meet the requirements of 11.7.2 and G.5: a) a product of pressure and volume greater than 200 kPa·l, b) a pressure .greater than 50 kPa.• 11.7.1DV.2 Laboratory equipment and testing and measurement equipment that do not have those characteristics shall meet the requirements of 11.7.3 and 11.7.4, as applicable.• 11.7.1DV.3 Process Control and other equipment shall meet the requirements of Annex G, as applicable 16
• National Difference – Leakage and Rupture at High Pressure11.7.2. DV Replacing Note as follows:• Fluid-containing parts which in NORMAL USE have both of the following characteristics shall not cause a HAZARD through rupture or leakage: a) a product of pressure and volume greater than 200 kPa·l; b) a pressure greater than 50 kPa.Conformity is checked by inspection and, if a HAZARD could arise, by thedescribed hydraulic test• NOTE National authorities may allow safety to be established by calculation, for example according to the ASME Boiler and Pressure Vessel Code. 17
National Difference – 14.1 Components andSubassemblies North American Standards• a) applicable safety requirements of a relevant IEC standard …• b) the requirements of this standard and, where necessary for the application, any additional applicable safety requirements of the relevant IEC component standard, …• c) if there is no relevant IEC standard, the requirements of this standard;• d) applicable safety requirements of a non-IEC standard which are at least as high as those of the relevant IEC standard, provided that the component has been approved to the non- IEC standard by a recognized testing authority.ND – In all these sub-clauses ), replace “IEC” with “ANSI, CAN, CSA,IEC, ISO, or UL”.ND - . Add a new note 3:• NOTE 3: Annex DVA provides applicable safety requirements. 18
National Difference – 14.7 Printed WiringBoards North American FlammabilityPrinted wiring boards shall be made of material with a flammabilityclassification of V-1 or better of IEC 60695-11-10.ND - 14.7DV D2 Addition of the following to the end of the ﬁrstparagraph:• A ﬂammability RATING of ANSI/UL V-1 or CAN/CSA C22.2 No. 0.17 is considered equivalent to the same classiﬁcation of IEC 60695-11- 10. 19
National Difference – 14.9 Outdoor UseND - 14.9DV D2 Add a new sub-clause to address enclosures intendedfor outdoor use:• Nonmetallic enclosures intended for outdoor use shall meet the UV resistance requirements of ANSI/UL 746C or of CSA C22.2 No. 0.17, or both as appropriate.NOTE ANSI/UL 746C, clause 25, requires a 1 000 hour UV/water exposurepreconditioning using a xenon-arc or• alternatively a 720 hour UV/water exposure preconditioning using twin carbon arcs. CSA C22.2 No. 0.17, subclause 5.9, permits only the 1 000 hour UV/water exposure preconditioning. 20
National Difference – 14.10 ConductiveCoatingsND - 14.10DV D2 Add a new subclause to address conductivecoatings, shields, and tape:• 14.10DV.1.1 The bond of a conductive (metallic) coating applied to a polymeric part shall be evaluated.• 14.10DV.1.2. a) Evaluating the bond in accordance with the requirements for “Adhesives” in ANSI/UL 746C and/or CSA C22.2 No. 0.17, or b) Evaluating the product to determine that peeling or ﬂaking of the coating would not reduce spacings or bridge live parts so as to introduce a risk of ﬁre or electric shock.. 21
National Difference – 14.10 Conductive Shields,and Tape14.10DV.2 Conductive shield or tape• 14.10DV.2.1 If peeling of the conductive shield or tape may introduce a RISK of ﬁre or electric shock, the bond between a conductive shield or tape and any other surface shall be investigated.• 14.10DV.2.2 Conformity is checked by inspection 22
National Difference – 14.11 Direct Plug-inTransformers North America Standards• ND - Add a new sub-clause14.11DV D2• 14.11DV.1 Direct plug-in transformer units:• Direct plug-in transformer units are subject to additional requirements found in ANSI/UL 1310, CAN/CSA C22.2 No. 223, ANSI/UL 60950-1, or CSA C22.2 No. 60950-1, as applicable. 23
Measuring circuit TERMINALSND - Table 101DV DR Modify the values in Table 101 by replacing it with thefollowing:Table 101DV - CLEARANCES and CREEPAGE DISTANCES for measuring circuitTERMINALS with HAZARDOUS LIVE conductive parts (IEC Values in brackets) Voltage on conductive parts of TERMINAL CLEARANCE and CREEPAGE DISTANCE V a.c. r.m.s. V d.c. mm 30 (33) 300 60 (70) 414 0,8 >300 600 >414 848 1,0 >600 1 000 >848 1 414 2,6NOTE Values are determined by calculation for REINFORCED INSULATION. Transients are not taken into account. Conformity is checked by inspection and measurement.
101.3 Protection Against Mismatches of Inputs andRangesND - 101.3.3DV D2 Addition of the following test:101.3.3DV.1 If the function or range controls have any effect on theelectrical characteristics of the input circuit, these controls shallbe changed to all possible settings while the input TERMINALSare connected to the maximum RATED source.
Test leads for the tests of 101.3.2 and 101.3.3101.3.4 …. If the manufacturer-supplied test leads are permanentlyconnected to the equipment, then the attached test leads supplied bythe manufacturer shall be used without modification.ND - 101.3.4DV D2 Modification of 101.3.4 by deleting the following paragraph "If the manufacturer-supplied test leads are permanently connected to the equipment, then the attached test leads supplied by the manufacturer shall be used without modification." and replacing it with the following: 101.3.4DV.1 The applicable tests of 101.3.2 and 101.3.3 shall be performed with the test leads specified above and shall be repeated with any test leads supplied with the equipment by the manufacturer.
Annex DVA (informative) CSA, UL, IECcomponent standards.ND - DVA D2 Addition of a new annex DVA as follows:• The following is a matrix that provides a cross-reference between CSA, UL, and IEC standards for components.• This cross-reference is not meant to imply that the standards are equivalent. The CSA, UL, and IEC standards listed are used for evaluation of components and features of products covered by this standard.• Components need only comply with the applicable component standard acceptable in the country where the product is to be used.• These standards are considered to refer to the latest edition and all revisions published to that edition.
Annex DVB (informative)ND - DVB D2 Addition of a new annex DVB as follows• A table indicating identifying all clauses that have a National Difference
Annex DVC - (informative) - UV radiation limits: Guidelines fromthe American Conference of Governmental Industrial Hygienists(ACGIH)• DVC D2 Addition of a new annex DVC for UV radiation limits• DVC.1.1 These threshold limit values (TLVs) refer to ultraviolet (UV) radiation in the spectral region between 180 and 400 nm and represent conditions under which it is believed that nearly all workers may be repeatedly exposed without adverse health effects.• DVC.1.2 These values for exposure of the eye or the skin apply to UV radiation from arc, gas, and vapor discharges, fluorescent and incandescent sources, and solar radiation, but they do not apply to UV lasers (see the TLV for lasers). These values do not apply to UV radiation exposure of photosensitive individuals or of individuals concomitantly exposed to photosensitizing agents. These exposures to the eye do not apply to aphakics. (See light and near-infrared TLV for radiation.) These values should be used as guides in the control of exposure to continuous sources where the duration of exposure is not less than 0,1 s. Likewise, these values should not be regarded as a fine line between safe and dangerous levels.
Annex DVC - (informative) - UV radiation limits:Guidelines fromthe American Conference of Governmental Industrial Hygienists(ACGIH• DVC.2 Recommended values• DVC.2.1 The TLVs for occupational exposure to UV radiation incident upon skin or eye where irradiance values are known and exposure time is controlled are as follows:• a) UV-A (315 to 400 nm) radiation to the unprotected eye:• 1) For exposure times less than 1 000 seconds, the total energy should not exceed 1 J/cm2 (1 000 mJ/cm2).• 2) For exposure times greater than 1 000 seconds, the average power level should not exceed 1 mW/cm2; and no 1 000 second time period should present a total energy that exceeds 1 J/cm2 (1 000 mJ/cm2).• b) For monochromatic sources, the TLV for exposure to the unprotected skin or eye is shown in Table DVC.2.1.1 (also represented in Figure DVC.2.1.1) and should not be exceeded within an 8-hour period.• c) For broad-spectrum or multi-peak sources, the TLV for exposure of the unprotected skin or eye should be calculated based on an effective weighting formula:• Eeff = S (El • S l • Dl )
Annex DVD (normative) permanent connectionto MAINSND - DVD D2 Addition of a new Annex DVD as follows:• DVD.1 General• DVD.1.1 Equipment intended for permanent connection to the mains shall have provision for connection of a wiring system in accordance with ANSI/NFPA 70, NEC, with CSA C22.1, CEC, Part I, or with both as appropriate, and shall meet the requirements of DVD.2 to DVD.3, as applicable.• DVD.1.2 Conformity is checked by inspection, and as specified in DVD.2 to DVD.3.
Annex DVD (normative) permanent connectionto MAINS (Cont’d)Topics Are:DVD.2 Wiring TERMINALS and leads e.g.• DVD.2.1.1 PERMANENTLY CONNECTED EQUIPMENT shall be provided with TERMINALS or leads for the connection of conductors having an ampacity that, in accordance with the National Electrical Code and/or the Canadian Electrical Code, Part I, is acceptable for the equipment.DVD.3 ENCLOSURE requirements for conduit entry e.g • DVD.3.1 An ENCLOSURE shall not pull apart or sustain damage such as cracking and breaking, and knockouts shall remain in place when subjected to the pulling, torque, and bending that is likely to occur.DVD.4 Conduit ENCLOSURE entry tests e.g. • DVD.4.1 Conduit pull-out test • DVD.4.2 Conduit torque test • DVD.4.3 Bending • DVD.4.4 Knockouts
SummaryNational Differences for:• Risk of Electric Shock• Risk of Fire• Protection Against Hazards from Fluids• Components and Subassemblies• Measuring Circuits• Annexes Slide 35
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