CSAC22.2No.100-04《电动机和发电机》.pdf

Update No. 2 C22.2 No. 100-04 May 2006 Note: General Instructions for CSA Standards are now called Updates. Please contact CSA Information Products Sales or visit www.ShopCSA.ca for information about the CSA Standards Update Service. Title: Motors and generators originally published June 2004 Revisions issued: Update No. 1 September 2004 If you are missing any updates, please contact CSA Information Products Sales or visit www.ShopCSA.ca. The following revisions have been formally approved and are marked by the symbol delta () in the margin on the attached replacement pages: CSA C22.2 No. 100-04 originally consisted of 77 pages (x preliminary and 67 text), each dated June 2004. It now consists of the following pages: Update your copy by inserting these revised pages. Keep the pages you remove for reference. RevisedContents, Preface, Clause 4.14, Figures 5, 6, and 7, and Annex B NewClause 4.15 DeletedNone June 2004112, 1736, 39, 40, 4362, and 67 September 2004vviii, 37, 38, 41, and 42 May 2006iii, iv, ix, x, 1316, and 6366 Contents Canadian Standards AssociationMotors and generators May 2006 Technical Committee on Industrial Products vii Subcommittee on C22.2 No. 100 viii Preface x 1 Scope 1 2 Reference publications and definitions 2 2.1Reference publications 2 2.2Definitions 3 3 General requirements 6 4 Construction 7 4.1General 7 4.2Enclosure 7 4.2.1Guarded machines 7 4.2.2Totally enclosed machines 7 4.2.3Drip-proof and weather-proof enclosures 8 4.3Non-metallic enclosure materials 8 4.4Terminal boxes (750 V and less) 8 4.5Conduit hubs and equivalent threaded openings 10 4.6Flexible cords 10 4.7Leads 11 4.7.1Lead type and size 11 4.7.2Lead insulation 11 4.7.3Lead protection 11 4.8Spacings (low voltage) 12 4.9Capacitors 12 4.10Suppressors 13 4.11Grounding and bonding 13 4.12Brush holders and terminals 14 4.13Receptacles 14 4.14Inverters integral with a variable-speed machine 14 4.15Electrical generator set assemblies 14 4.15.1 Construction Two-wire circuits 14 4.15.2 Construction Three-wire circuits 15 4.15.3 Receptacle grounding terminal 15 5 Marking 15 6 Tests 17 6.1General 17 6.2Temperature test 18 6.3Rating 19 6.4Dielectric strength test 19 6.5Threaded conduit openings 20 6.6Strain relief 20 6.7Guarded machine test 20 6.8Water tests 20 iii(Replaces p. iii, June 2004) C22.2 No. 100-04 Canadian Standards Association May 2006 6.9Flame tests 22 6.10Impact test 22 6.11Physical abuse (terminal boxes) 22 6.12Integral insulation 23 7 DC machines and AC machines (including universal motors) in IEC frame size 80 and smaller 23 7.1Scope 23 7.2Construction 23 7.2.1General 23 7.2.2Terminal boxes 24 7.2.3Spacings 24 7.2.4Leads (30 V rms and less) 24 7.2.5Soldered connections 24 7.2.6Hobby motors 24 7.2.7Insulation systems 25 7.3Marking 25 7.4Tests 26 7.4.1General 26 7.4.2Rating AC motors 26 7.4.3Rating DC motors 26 7.4.4Temperature test 26 7.4.5Starting of hobby motors 26 7.4.6Overspeed (ac series and universal motors) 27 7.4.7Moisture absorption 27 8 AC machines (including universal motors) in IEC frame sizes 90 to 280 and rated 750 V ac and less 27 8.1Scope 27 8.2Construction 27 8.2.1General 27 8.2.2Leads to embedded detectors 27 8.2.3Insulation systems 27 8.3Markings 28 8.4Tests 28 8.4.1General 28 8.4.2Embedded detectors 28 8.4.3Moisture absorption 28 9 AC machines rated over 750 V ac or in IEC frame size 315 and larger 29 9.1Scope 29 9.2Construction 29 9.2.1General 29 9.2.2Enclosures 29 9.2.3Terminal boxes 29 9.2.4Mechanical strength 30 9.2.5Insulation (for parts over 750 V) 30 9.2.6Internal wiring (over 750 V) 30 9.2.7Internal wiring (750 V ac and less and 500 V dc and less) 31 9.2.8Terminal box spacings 31 9.2.9Insulation systems 31 9.3Marking 32 9.4Tests 32 9.4.1Test voltage 32 (Replaces p. iv, June 2004)iv Canadian Standards AssociationMotors and generators J. RydeskiMarathon Electric Manufacturing Company, Wausau, Wisconsin, USA H. Sedding Kinectrics Inc., Toronto, Ontario Associate G.C. StoneIris Power Engineering Inc., Toronto, Ontario Associate M. StrangesGeneral Electric Canada Inc., Peterborough, Ontario Associate N. StrangesGeneral Electric Canada Inc., Peterborough, Ontario M. HenvilleCSA, Mississauga, Ontario Project Manager ix(Replaces p. ix, September 2004) May 2006 C22.2 No. 100-04 Canadian Standards Association May 2006 Preface This is the sixth edition of CSA C22.2 No. 100, Motors and generators, one of a series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. It supersedes the previous editions published in 1995, 1992, 1985, 1982, and 1974. Significant changes from the previous edition are as follows: (a)the addition of the construction requirements for two- and three-wire generator circuits in Clause 4.15; and (b)an expansion of testing requirements in Clause 11.4. For general information on the standards of the Canadian Electrical Code, Part II, see the Preface of CAN/CSA-C22.2 No. 0. This Standard was prepared by the Subcommittee on C22.2 No. 100, under the jurisdiction of the Technical Committee on Industrial Products and the Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the Technical Committee. Interpretations: The Strategic Steering Committee on Requirements for Electrical Safety has provided the following direction for the interpretation of standards under its jurisdiction: “The literal text shall be used in judging compliance of products with the safety requirements of this Standard. When the literal text cannot be applied to the product, such as for new materials or construction, and when a relevant committee interpretation has not already been published, CSAs procedures for interpretation shall be followed to determine the intended safety principle”. June 2004 Notes: (1)Use of the singular does not exclude the plural (and vice versa) when the sense allows. (2)Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose. (3)This publication was developed by consensus, which is defined by CSA Policy governing standardization Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this publication. (4)CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee. (5)All enquiries regarding this Standard, including requests for interpretation, should be addressed to Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6. Requests for interpretation should (a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch; (b) provide an explanation of circumstances surrounding the actual field condition; and (c)be phrased where possible to permit a specific “yes” or “no” answer. Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are published in CSAs periodical Info Update, which is available on the CSA Web site at www.csa.ca. (Replaces p. x, September 2004)x Canadian Standards AssociationMotors and generators 4.10 Suppressors A suppressor used for suppressing radio interference shall comply with the requirements of CSA C22.2 No. 8. 4.11 Grounding and bonding 4.11.1 Machines shall comply with the requirements of CSA C22.2 No. 0.4, except for those applications where grounding or bonding is not required or as permitted in Clauses 4.11.2 and 4.11.3. Motors intended for use only as components of specific equipment, provided that they are inherently bonded to the equipment, need not be furnished with a bonding terminal means for connecting all bonding conductors or for the field installation of a bonding terminal. 4.11.2 Where a terminal box has more than one assembly screw, stud, or equivalent securing means for attachment to the machine frame, one of these screws may be used as the grounding or bonding conductor securing means if it complies with the requirements of Clause 4.11.1. A suitable grounding means consists of (a)an assembled screw; (b)a tapped hole with screw supplied; (c)a nut and bolt combination; or (d)a similar arrangement suitable for the field installation of a grounding conductor, terminal, or connector. 4.11.3 Machines having provision for connection to the supply by leads may have a bonding lead provided as an integral part of the machine and suitably terminated under the head of a through-bolt or clamp-bolt, or by other acceptable means, subject to the requirements of CSA C22.2 No. 0.4. Bonding conductor size on motors intended for use only as components of specific equipment, where supply conductors to the motor are normally smaller than those required for field wiring, need not be larger than the motor supply conductors to any one phase. 4.11.4 Bonding at resilient mountings shall not rely on conductive resilient material (e.g., conductive rubber compounds), but on metal conductors. The bonding means shall be such that the bond is effectively maintained regardless of the manner in which the motor is turned with respect to the mounting. Metal parts of a resilient mounting that serve as a bonding path shall be inherently resistant to corrosion or shall be suitably protected by plating or an equivalent means to resist corrosion. A bonding member shall be sufficiently flexible to withstand normal mechanical stresses due to vibration and any rotation of the machine within its mounting. 13(Replaces p. 13, June 2004) May 2006 C22.2 No. 100-04 Canadian Standards Association The resilient parts of the mounting that are depended upon to retain a bonding member in place shall comply with the requirements of Clause 4.11.1. If a machine having bonding at resilient mountings is intended for applications in which weather, exposure to sunlight, contaminants, or other environmental conditions can cause deterioration of the means of retaining the bond, the whole of the resilient mounting and bond shall be investigated to determine that the bond is not adversely affected. 4.12 Brush holders and terminals 4.12.1 Connections to brush holders and terminals shall be such that good electrical contact is maintained, and there is no subsequent reduction of spacings between live parts and non-current-carrying metal parts. 4.12.2 Terminal parts such as binding head screws, bolts, studs, etc., shall be not smaller than size No. 6 and, unless they are made of nonferrous metal, shall be suitably protected with a plating of cadmium, copper, or zinc having a thickness not less than 0.005 mm. 4.12.3 Soldered connections shall be made mechanically secure before soldering. 4.12.4 Wiring terminals shall be prevented from turning by means other than friction. 4.13 Receptacles Where receptacles rated at 60 A and less and 600 V and less are used, they shall comply with the requirements of CSA C22.2 No. 42. 4.14 Inverters integral with a variable-speed machine Inverters that are integral with a variable-speed machine shall comply with CSA C22.2 No. 107.1. 4.15 Electrical generator set assemblies 4.15.1 Construction Two-wire circuits One conductor of the generator output circuit shall be connected to the generator frame and to the identified neutral terminals of the output receptacles unless the output voltage is less than or equal to 150 V and output power is less than or equal to 5 kW. An overcurrent protective device shall be located in the ungrounded live conductor of a circuit having one conductor connected to the machine frame, and an overcurrent protective device shall be located in one conductor of an ungrounded two-wire circuit. (Replaces p. 14, June 2004)14 May 2006 Canadian Standards AssociationMotors and generators 4.15.2 Construction Three-wire circuits The common point of a three-wire output circuit shall be connected to the generator frame and to the identified neutral terminal of the output receptacles. Marking requirements as mentioned in Clause 5.1(d) shall apply. Overcurrent protection shall be provided in each ungrounded line conductor. 4.15.3 Receptacle grounding terminal In all cases, the grounding terminals of output receptacles shall be connected to the machine frame as illustrated in Figures 5, 6, and 7. 5 Marking Note: Annex B gives acceptable French translations of the markings specified in this Standard. When a product is not intended for use in Canada, cautionary markings may be provided in English only. 5.1 The following information shall be marked on machines, as applicable, and shall appear on a nameplate, be die-stamped in a readily visible location on the frame or enclosure, or be marked in some equivalent, permanent manner: (a)the manufacturers name, trademark, trade name, or other symbol of identification; (b)the model, catalogue, style, or other type of designation; (c)the rated voltage(s); (d)the rated input for motors in amperes, or for motors of less than 100 W output, the rated input in amperes or watts, and as applicable, one of the following: (i)the service factor amperes for motors having a service factor greater than 1.15; (ii)the rated amperes for multiconnection motors for each connection (permanent split-capacitor and shaded-pole motors shall be marked with the highest rated amperes only); (iii) the rated amperes for part-winding-start motors having a rated load exceeding 10 A and an additional marking of the full-load current in each supply circuit conductor if there are unequal values of current in each winding supply circuit; or (iv) the locked rotor motor amperes for air-over shaded-pole motors not having an output rating; (e)the rated output for motors in volt amperes, horsepower, watts, or kilowatts; Note: This information may be omitted from the marking of the machine and provided separately, but not necessarily with each machine, for (i)machines with less than 100 W output; or (ii)motors intended for use only as components of specific equipment. (f)the service factor if greater than unity; Notes: (1)This information may be omitted from the marking of the machine and provided separately, but not necessarily with each machine, for machines with less than 100 W output. (2)See Note to Item (e). (g)the time rating, if not continuous; Note: See Note to Item (e). (h)the rated load speed or synchronous speed in revolutions per minute (permanent-split capacitor and shaded-pole motors shall be marked with the highest speed only); Note: See Note to Item (e). (i)dc (for DC machines); (j)the direction of rotation, when this information is necessary for proper operation; 15 (Replaces p. 15, June 2004) May 2006 C22.2 No. 100-04 Canadian Standards Association (k)for DC machines with rectifier supply, if appropriate, the test power supply code letter (see Figure 1) for IEC frame size 90 (NEMA frame size 140) and larger and the form factor for IEC frame size 80 and smaller; (l)the frequency in hertz (for AC machines); (m) the number of phases (for AC machines), unless for single-phase operation; (n)the appropriate letter code for the insulation system and the maximum ambient temperature (in degrees Celsius) for which the machine is designed. The marking for motors with dual insulation systems shall be the stator insulation classification followed by “/” and the stator insulation; Note: This information may be omitted from the marking of machines having Class A insulation. The maximum ambient temperature may be omitted from the marking of motors that are intended to be used only as components of specific equipment. (o)the power factor (for synchronous machines only); (p)the rated exciter voltage (for synchronous and DC machines when separate excitation is employed) or, alternatively, the field resistance in ohms; (q)the exciting current in amperes (for separately excited machines only); (r)the winding (e.g., series, shunt, or compound) in machines 746 W (1 hp) and larger when necessary for safe operation; (s)the rotor volts and amperes for wound rotor motors; Note: See Note to Item (e). (t)in the case of a motor that can be used only with a certain capacitor that is not integral with the motor, an indication of the identity of the capacitor (type, model number, or capacitance and rated volts) that is intended to be used; (u)the warning CAUTION: USE SUPPLY WIRES SUITABLE FOR _ C or the equivalent wording if it is shown by testing (see Clause ) that such marking is necessary. The temperature to be marked shall be 90 C or 110 C for temperature ranges of 76 to 90 C or 91 to 110 C, respectively, for motors intended for field connection. The temperature markings of component motors shall be permitted to be 125 C, 150 C, or 200 C. The marking shall appear on the nameplate, in the terminal box, or near the point where the supply connections are made. Motors intended for use only as components of specific equipment need not be so marked if this information is provided separately. The information need not be supplied with each motor; (v)DRIP-PROOF or DP if a drip-proof motor, WEATHER-PROOF or WP if a weather-proof motor, or TOTALLY ENCLOSED or TE if a totally enclosed motor. Additional characters may be used, e.g., DPGD (drip-proof guarded) or TENV (totally enclosed non-ventilated). This marking may be combined with that of Item (w); Note: This information may be omitted from the marking of the motor and provided separ