ref no: n07-016 date: march 23, 2007 · ref no: n07-016 date: march 23, 2007 certification notice...

DQD 529.01e Rev 2004-11-16 of 57 I:\Wgm4\Doc_ctrl\Notices\A-D\CertificationNotice370CA

Ref No: N07-016 Date: March 23, 2007

CERTIFICATION NOTICE NO. 370-CA (Supersedes Certification Notice No. 370-CA

Dated December 31, 2004)

Effective Date: December 31, 2007

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Announcing: An Update of CSA Program for Qualification of Facilities Engaged in the Repair of Electrical Motors and Generators, Certified by CSA International to CSA Standards, for use in Hazardous Locations

Class No:9088 01 : QUALIFIED FACILITIES FOR THE REPAIR OF HAZARDOUS LOCATIONS EQUIPMENT - Motors and Generators

Who is affected? All facilities engaged in the repair of electrical motors and generators for use in Hazardous Locations (hereafter referred to as Facilities), under the CSA Program for the qualification of facilities engaged in the repair of CSA Certified electrical motors and generators for use in Hazardous Locations (hereafter referred to as CSA QF Program).

What do you do? 1. In order to maintain qualification to CSA QF Program, all Facilities

must make an application for a project with CSA International to verify compliance with Certification Notice No. 370-CA.

2. Please contact CSA International to initiate a project. At time of application, please provide a completed “Questionnaire for CSA Qualification of Facilities Engaged in the Repair of electrical Motors and Generators for use in Hazardous Locations” (Attachment 3 of this Notice), including any supporting documentation*.

3. Applications must be received no later than July 1st, 2007. Any Facilities which have not applied by this date risk suspension from CSA QF Program.

4. All assessments must be completed prior to December 31st, 2007. Any facilities not assessed after December 31st, 2007 will be delisted from CSA QF Program.

*Questionnaire, technical/company information and materials, company name, address, factory locations and CSA file number or master contract number (if assigned). To make an Application.

Contact: Melaney Swenson Phone 780.490.2044; Fax 780.461.5322

e-mail: [email protected]

Major Revisions:

There are no changes to the basic concept of the CSA Program. However, for ease of compliance with the QF Program, the following is included:

Clarification notes 1. Explanatory drawings and diagrams

Note: This Certification Notice contains the following 5 attachments; - Attachment 1 (2 pages) - Attachment 2 (7 pages) - Attachment 3 (9 pages) - Attachment 4 (24 pages) - Attachment 5 (15 pages) Tables as shown in Attachment 5 are for reference only.

Background and Rationale:

This Certification Notice announces the update of the CSA QF Program for the qualification of facilities engaged in the repair of CSA Certified electrical motors and generators for use in Hazardous Locations. See Attachment 1 for details of background, rationale and an outline of the Program.

Need additional technical information?

Contact Dave Adams by phone 780.490.2037, fax 780.461.5322

or e-mail [email protected]

Apply Before July 1, 2007

Visit us at www.csa-international.org Click on "Contact Us" for the online phone listing of our Offices and Partners

Visit us at www.shopcsa.ca to purchase a Standard!


ATTACHMENT 1 Background/Rationale There are facilities that repair electrical motors and generators for use in Hazardous Locations as defined in the Canadian Electrical Code Part I. It is necessary to ensure that these repaired electrical motors and generators continue to comply with the CSA Standards to which they are certified. To meet the industry needs, CSA International has developed and implemented the Hazardous Location Motor Repair Shop Program (hereafter referred to as Program). The Program was described in Certification Notices Nos. 370B and 370C. Certification Informs No. 370-CA, was then issued to amalgamate Certification Notices Nos. 370B and 370C and include minor changes (for clarification purposes). Program Outline Scope The Program noted in the Notice covers qualification of facilities engaged in the repair of electrical motors and generators for use in Hazardous Locations. The Program qualification requirements (hereafter referred to Program Requirements) are specified in Attachment 2 attached. Marking When a facility has demonstrated its ability to comply with the Program Requirements, CSA International will qualify the facility as CSA Qualified Repair Facility and authorize it to apply a Qualification Nameplate to the repaired electrical motors and generators. The nameplate requirements are detailed in Clause 2.7 of Attachment 2. Certificate of Qualification When a facility has been qualified, CSA International will issue to the facility a Certificate of Qualification for display on the premises of the facility. Each Certificate contains the name and address of the facility and indicates the type of hazardous location equipment the facility is qualified to repair. CSA International will authorize the facility the use of the statement “CSA Qualified Repair Facility” on its stationery and in advertising material. Surveillance Audits Upon issuance of a Certificate of Qualification and signing of the CSA Service Agreement by the repair facility, an audit program, consisting of two surveillance audits per year, will be conducted. These audits will monitor the repair facility’s ability to continued compliance with the applicable CSA requirements.


Service Charges Charges for initial qualification and re-qualification assessments are on a time/cost basis plus travel expenses. The assessment for qualification and re-qualification covers evaluation of the facility, review of information provided, report preparation, application processing and other assessment activities. All the charges will be billed to the facility upon completion of qualification of the facility. Charges for routine periodic in-plant inspection visits and other related functions for servicing the Service Agreement will be assessed based on the number of expected inspection visits and other inspection functions as necessary. CSA Product Class No. Repaired electrical motors and generators for use in hazardous locations will be listed under the following CSA product Class No. 9088 01 ELECTRICAL MOTORS AND GENERATORS REPAIRED BY QUALIFIED FACILITIES

FOR USE IN HAZARDOUS LOCATIONS Direction for Qualification and Re-qualification Repairing Facilities All Qualified facilities engaged in the repair of electrical motors and generators for use in Hazardous Locations are affected by this Notice. In order to maintain your qualification, you must make an application for assessment to Cert Notice 370-CA. You will be required to complete the Questionnaire (Attachment 3) and provide all supporting documentation necessary to verify compliance. An application for assessment must be received by CSA no later than April 1st, 2007. If no application has been received by April 1st, 2007, the facilities qualification will be suspended. Facilities, qualified and unqualified, engaged in the repair of electrical motors and generators for use in Hazardous Locations you may make an application at any time to participate in this program. Facilities interested in the Program will follow the procedure outlined in Clause 2.3, Qualification and Re-qualification, of Attachment 2.


ATTACHMENT 2

PROGRAM REQUIREMENTS

FOR

CSA QUALIFICATION OF FACILITIES ENGAGED IN THE REPAIR OF ELECTRICAL MOTORS AND GENERATORS CERTIFIED TO CSA STANDARDS BY CSA

INTERNATIONAL, FOR USE IN HAZARDOUS LOCATIONS 2.1 Scope 2.1.1 Hazardous Locations Motor Repair Shop Program (hereafter referred to as Program) applies to

facilities engaged in the repair of CSA Certified electrical motors and generators (hereafter referred to as Motors), for use in Hazardous Locations as defined in the Canadian Electrical Code (CEC), Part I.

2.1.2 Any changes to the Motor, other than those covered in the requirements of the Program

(hereafter referred to as Program Requirements), that make it suitable for use in applications other than that for which it was originally designed and CSA Certified, is not within the scope of the Program Requirements.

2.2 Definitions

Facility means any entity comprising of qualified personnel and equipment located in a definite place for the repair of electrical motors for use in Hazardous Locations.

Qualified (Qualify, Qualification) as used by CSA International with respect to a service provided by a facility, means that an investigation of the repair service has been performed by CSA International to determine compliance with the requirements of this program. Further, that permission is granted in accordance with the agreement between CSA International and the management of the facility, for them to represent their service as complying with the requirements of this program.

Service means work and incidental material specified in a contract such as inspection, nondestructive examination, calibration, testing, welding, and analysis.

Surveillance audits means the continuing evaluation, analysis and verification of a facility’s records, methods, procedures, products, and services to ensure that the requirements of this program are met.

2.3 Requirements for Initial Qualification and Re-Qualification Assessments 2.3.1 The management of a facility shall demonstrate to CSA International that it has and will continue

to have the personnel, equipment, capabilities and effective program to comply with the Program Requirements.

2.3.2 The type and extent of initial qualification shall depend on the personnel and repair equipment

available at the facility


2.3.3 CSA International will qualify a facility that can demonstrate its capability to repair Motors for

various Classes, and Divisions of Hazardous Locations and compliance with the Program Requirements.

2.3.4 The management of the facility shall provide CSA International with an organization chart

showing the various positions, responsibilities and authorities of the personnel responsible for the repair of Hazardous Locations Motors.

2.3.5 The management of the facility shall provide CSA International with a list of equipment for

performing the required functions. The list should include capital equipment, electrical test and dimensional measuring instruments (e.g. feeler gauges 0.04 to 0.76 mm or 0.0015 to 0.030 inch. The facility shall inform CSA International, in writing, of any changes to the equipment.

2.3.6 The management of the facility shall provide evidence of calibration of test and measuring

equipment. 2.3.7 Facilities interested in the Program shall complete the questionnaire of Attachment 3. 2.3.8 Upon satisfactory initial qualification assessment of the facility, CSA International will issue a

letter and Certificate of Qualification to the facility. See Clause 2.10 for details. 2.3.9 A facility shall be subjected to a re-qualification assessment when:

(a) the type or scope of repairs require expertise, test equipment, or environment not previously evaluated; or

(b) significant changes were made to the facility, instrumentation or personnel; or (c) company ownership has changed; or (d) more than six months has elapsed since the previous surveillance audit.

2.4 General Requirements 2.4.1 The hazardous location rating marked on the original CSA Certified Motor shall not be changed. 2.4.2 Repaired Motors shall not be marked for use in a Hazardous Location unless the original Motor,

prior to repair, was Certified for use in that Hazardous Location. 2.4.3 Repairs, tests and inspections subcontracted by the qualified facility shall remain the

responsibility of the qualified facility. 2.4.4 Replacement parts or materials used in the repair of Motors shall be:

(a) Approved to CSA Standards, where applicable (e.g. leads, temperature limiting devices,

sealing compounds) and obtained from the original manufacturer of the replacement part; or

(b) Constructed in accordance with the specifications obtained from the original

manufacturer; or

(c) Constructed in accordance with the applicable CSA Product standards, and have the same (or better) electrical and mechanical characteristics as the original, or as permitted elsewhere in requirements specified below.


2.4.5 Equipment, originally CSA Certified with terminal boxes or other devices shall only bear the CSA Qualification Nameplate if such components are in place.

2.4.6 If a Motor is rewound, an approved winding temperature-limiting device shall be installed to

ensure that abnormal condition temperatures do not exceed the minimum ignition temperature of the Class and Group to ensure safety. If the temperature setting of the temperature limiting device exceeds 80% of the minimum ignition temperature of the Class and Group marked, the rewound motor shall comply with the appropriate abnormal temperature test requirements of the latest edition of CSA Standard C22.2 No. 145 - Motors and Generators for Use in Hazardous Locations. (See Attachment 4, Supplement E.)

2.4.7 If a voltage change is made to the Motor:

(a) The final voltage shall not exceed 600V ac rms; or

(b) The final voltage shall be within the range granted in the CSA Certification to the original Motor manufacturer and the Repair Facility shall show evidence of compliance.

2.4.8 If a physical change is made to the Motor shaft, the Repair Facility shall show evidence that the

final shaft configuration was included in the CSA Certification granted to the original Motor manufacturer.

2.5 Personnel 2.5.1 The management of the facility shall demonstrate to the satisfaction of CSA International that:

(a) The facilities operations in the repair of Hazardous Location Motors are under the supervision of a technically qualified supervisor; and

(b) The facility has a trained staff capable of following specified repair, test and program

procedures. 2.5.2 The management of the facility shall designate a technically qualified person who is responsible

for the administration of the program to ensure compliance with the qualification requirements. 2.5.3 The management of the facility shall designate an alternate for the technically qualified

supervisor who can be responsible for the repair during short periods of absence of the supervisor.

2.5.4 The management of the facility shall notify CSA International within 30 calendar days of any

changes in the supervisory personnel. 2.6 Facility 2.6.1 The facility shall be located at a fixed address and have:

(a) Areas allocated for repair work;

(b) Measuring instruments properly calibrated and in working order which are used in the test and inspection of motors situated in the facility building;

(c) Appropriate machine tools which are used in the repair of motors, in working order,

situated in the facility building;


(d) An area allocated for record keeping; to maintain records; and

(e) Equipment handling devices capable of safely handling the maximum size of motor for

which the facility has received qualification. 2.7 Marking 2.7.1 The qualified facility shall apply a Qualification Nameplate to repaired equipment only at the

location for which CSA Qualification has been granted. 2.7.2 Motors shall bear the CSA Mark and appropriate Hazardous Location designations, (as applied

originally by the Motor manufacturer), when it is received at the facility to clearly indicate that the Motor complied with the requirements of this program.

2.7.3 Nameplates bearing the original required markings shall not be removed, and the CSA Mark

shall not be defaced. 2.7.4 The marking of repaired Motor shall include, on one Qualification Nameplate:

(a) The name and address of the repair facility; (b) The words “Repair Facility Qualified by CSA International”, “Atelier de Reparation

Qualifie Par CSA International”; (c) The CSA Monogram; (d) The date or date-code of repair; (e) Electrical rating, (where applicable); Note: If a voltage change is made in the motor, the value shown on the original Nameplate (and

on any previous repair nameplates, if not removed) shall be defaced. (f) Rating of temperature limiting devices, (where appropriate); (g) The repair job or order number. (h) If temperature devices are installed, the Caution: “Temperature Limiting devices must be

connected to de-energize the motor to insure minimum ignition temperatures are not exceeded.”; or equivalent wording.

2.7.5 In addition, Motors which are rewound shall be provided with complete instructions for the

proper use and connection of the winding temperature limiting devices installed (See Clause 2.4.6), and the words “Temperature Limiting Device Installed See Instruction” shall be included on the Qualification Nameplate (See Clause 2.7.6).

2.7.6 The Qualification Nameplate shall be of metal, 0.5mm thick min, secured by screws or rivets,

mounted adjacent to the original marking. The wording, permanently marked and clearly legible, shall be as illustrated below; however, the format may vary to suit the application.


REPAIR FACILITY QUALIFIED BY CSA INTERNATIONAL

ATELIER DE REPARATION QUALIFIE PAR CSA

INTERNATIONAL

(Name and address of facility)

* (CSA File No.) *** (Electrical Rating) ** (Job No.) *** (Temp. Limiting Device Rating) (Date of Repair) Temperature Limiting Device Installed See Instruction. Caution: Temperature Limiting Devices must be connected to de-energize the motor to insure Minimum Ignition Temperatures are not Exceeded.

* Optional ** A unique job number or similar identifying code which will relate each Qualification Nameplate to

a specific Repair Job Record (See Clause 2.7.4). *** Where applicable.

Note: It shall be noted that the CSA Mark

shall not be taken to mean or imply that the repaired motor is re-certified, under the name of the Repair Facility, by CSA International. The use of the Qualification Nameplate is allowed as a means for ready recognition by the general public that the facility is qualified by CSA International to perform the repair and restore the motor to its original status provided that such Qualification is in effect.

2.8 Tests and Inspections 2.8.1 General 2.8.1.1 The management of a facility shall demonstrate to the satisfaction of CSA International that it is

capable of performing tests and inspections that may be required to ensure compliance with the applicable CSA Standard except as specified in Clause 2.8.1.2. At its discretion, CSA International may witness tests and inspections performed at the facility at any time.

2.8.1.2 Where the tests and inspections are performed at another facility, or by personnel of a

subcontractor, the management of the facility shall demonstrate to the satisfaction of CSA that the subcontracted test agency has the necessary equipment and that the equipment is properly maintained and calibrated, and the personnel are qualified to use it. (See also Clause 2.4.3).

2.8.2 Electrical Tests 2.8.2.1 Repaired motors shall be subjected to all dielectric strength tests required for new motors,

except that the test voltage shall be 60 percent of the required value. Rewound motors shall be subjected to 100 percent of the required value.

2.8.3 Enclosure 2.8.3.1 For enclosures required to be explosion-proof or intended for use in Class I Hazardous

Locations, an overpressure test shall be applied if there has been a deterioration that may affect the strength of the enclosure. If the original manufacturer’s specification is available and the enclosure thickness complies with the minimum thickness specified, the test may be waived.


An overpressure test shall be applied to the equipment if welding is performed to repair structural damage to the enclosure.

2.8.3.2 If the overpressure test is required to comply with Clause 2.8.3.1, the test pressure shall be

1380 kPa (200 psi). The enclosure shall withstand the application of the test pressure for 1 minute without deformation or rupture.

Note: If the overpressure test is required, it is recommended that the test be conducted employing an incompressible fluid. Tests employing air or other compressible fluids are not recommended due to the inherent casualty hazard present when testing equipment under high pressure with such media.

2.8.3.3 The enclosure shall be investigated for compliance with the applicable requirements of CEC,

Part II standards, and the flame path lengths and gaps shall be measured. Prior to repair, flame path dimensions shall be recorded and the new dimensions resulting from the repair shall also be recorded.

2.9 Records 2.9.1 A record of Hazardous Location Motors repaired, to which the Qualification Nameplate is

applied, shall be maintained by the facility and shall be made available to CSA International immediately upon request.

2.9.2 Each repair job shall be recorded as a separate entity in accordance with Attachment 4 and

each stage of a particular repair job entered in the record with the signature(s) of the repair, test, and inspection personnel responsible for the work. Repair Job Records shall be retained by the facility for at least 7 years and be readily available to CSA International.

2.9.3 Any stage of a repair job conducted by personnel other than those at the facility shall be

recorded in detail, and shall be included in the Repair Job Record together with the signatures of the personnel of the facility, responsible for the work.

2.9.4 The management of the facility shall verify the repair job record of Clause 2.9.5 for compliance

to the Program Requirements by inspection. See Attachment 4 for details. 2.9.5 The Repair Job Record may be of any format to suit the facility’s system, but it shall include the

following elements:

(a) Indication of each inspection and test point and its relative position in the repair cycle, including incoming inspection and testing;

(b) Identification of the characteristics being inspected, examined and tested at each point,

and specifying acceptance criteria to be used. Written technical procedures are not mandatory unless specified by CSA International; and

(c) Indication of where services of a subcontractor is employed.

2.9.6 A Repair Job Record shall include the following details or equivalent:

(a) Company or personnel for whom the equipment is being repaired;

(b) Confirmation that the CSA Mark is in evidence on the original nameplate;

(c) Hazardous Locations designations and Temperature Code are evidence on the original nameplate (as applicable);


(d) Description of the equipment, including the original manufacturer’s name, model

designation and ratings;

(e) Nature of the damages to the equipment as received by the facility;

(f) Date on which the repairs commenced;

(g) All stages of the repair job process;

(h) Appropriate details of each repair stage;

(i) Manufacturer’s name and model designation of replacement parts specified in Clause 2.4.4, as applicable,

(j) Insulation class and type and ratings of temperature limiting devices installed; and

(k) Date on which the repair was completed, together with the supervisor signature of the

supervisor of Clause 2.5.1. The date shall be the basis for the date code marked on the Qualification Nameplate of Clause 2.7.4.

2.10 Certificate 2.10.1 CSA International shall issue a letter and Certificate of Qualification to the facility that conform to

the Program Requirement. 2.10.2 The name and address of the qualified facility, equipment classifications, and limitations that

apply, will appear on each Certificate. 2.10.3 The certificate remains the property of CSA International and is subject to renewal every three

years. It may be withdrawn, at any time, if in the opinion of CSA International the facility does not meet the Program Requirements.


ATTACHMENT 3

QUESTIONNAIRE

FOR

CSA QUALIFICATION OF FACILITIES ENGAGED IN THE REPAIR OF ELECTRICAL MOTORS AND GENERATORS FOR USE IN HAZARDOUS LOCATIONS

This Attachment forms part of the Program Requirements and provides additional definition and description of the program elements. 3.1 General 3.1.1 The Program is offered to qualify a facility engaged in the repair of electrical motors and

generators for use in Hazardous Locations based upon the knowledge, skills and ability of the personnel, proper equipment and instrumentation, and adequate documentation and record keeping.

3.1.2 The extent of repair as defined in the scope of the requirements is limited to those steps

necessary to bring the motor back to its original operating state and the changes covered in the Program Requirements.

3.1.3 Motors, originally certified by CSA International, must conform after being repaired to the CSA

Standards to which the Motors were certified assessed when the manufacturer submitted them for certification.

3.1.4 Only Motors originally certified by CSA International and bear the CSA Mark are eligible for

repair under this Program. 3.2 Scope of Repair

The qualification of the facility is limited to the types, maximum size and electrical rating of the motors you are capable of repairing. Please provide the following information on the motors and/or generators you intend to repair.

3.2.1 Type of motors: (e.g. ac, dc, slip-ring, etc.)

3.2.2 Electrical rating: (e.g. max hp, rpm, voltage, etc.)


3.2.3 Maximum physical motor size: (e.g. diameter, length, etc.)

3.2.4 Hazardous Locations rating: (e.g. Class I, Group D; Class II, Groups F and G; etc.)

3.2.5 Nature of repairs: (e.g. rewind, machining, welding, etc.)

3.3 Management

It is the management's responsibility to put a program in place and administrate it in such a manner that the facility meets the Qualification Requirements.

Some areas of concern will be:

- Personnel - their qualifications and training; - Instrumentation - measuring, testing and calibration; - Machine Equipment - adequate for the job and in good repair; - Facility - adequate repair area and record keeping area; - Repair Process - consistent repair quality; - Inspection Process - ensure that adequate inspection steps are in place and fully

effective; - Documentation - fully identifies motor and its condition plus detailed information on

repairs made, measurements and tests done, added nameplate information.

To help ensure that the on-going qualifications are met, it is necessary that technically qualified persons are in place to administrate and supervise the program. These persons are to be separate individuals where possible, except it is recognized that in very small shops these persons may be one and the same.

3.3.1 Advise the name and qualifications of the technically qualified person responsible for the

administration of this program:

3.3.2 Advise the name and qualifications of the technically qualified person responsible for the

supervision of the motor repair:


3.3.3 In the event that the Supervisor of motor repair is away an alternate technically qualified person

is to be available, where possible. Advise the name and qualifications of this person:

3.4 Personnel 3.4.1 Please provide an organizational chart, showing the names, positions and areas of duty of the

managers and supervisors. Also show the work positions that report to each. This chart is to be done so that the relationships of each area and position is obvious.

3.4.2 The personnel responsible for the running and maintenance of this program must be qualified

by virtue of work experience and/or formal schooling. Advise by what criteria you hire for these positions (e.g. minimum work experience, type of experience, schooling, etc.).

3.4.3 The repair personnel must be familiar with the requirements of this program plus the specific

CSA Standards. How will this training be done for your existing personnel plus future personnel?

3.5 Facility

This Qualification Program is applicable only to the facility address noted on the application form and does not apply to any other location including work done in the field.

3.5.1 The facility must have sufficient area available to carry out the repair function including work

benches capable of supporting the loads intended. 3.5.2 Advise how many square meters are available for the repair function and how the areas are

utilized (e.g. so many square meters for machining, winding, testing, etc.).


3.5.3 What is the facility's electrical distribution rated at and what secondary sources of power are available for testing purposes in volts, frequencies, amperes and number of phases?

3.5.3 The facility must have sufficient area available for storing of work records and for administrative

functions. 3.5.4 Advise how many square meters are set aside for the storing of work records and

documentation plus also the administrative functions.

3.6 Instrumentation

During the course of the motor repair, the repair facility shall verify flame-path joints and electrical characteristics in every instance. Instrumentation such as calipers, micrometers, multi-meters, dielectric testers, feeler gauges (including thicknesses down to 0.04 mm (0.0015 in)), etc. These instruments must be in good repair and properly calibrated at reasonable intervals, and traceable to the National Bureau of Standards.

3.6.1 Provide a list of the measurement and test equipment used in the inspection, repair and test of

hazardous location motors. In the case of electrical equipment, the list must include the range (i.e. volts, amperes, etc.), make and model number.


3.6.2 Calibration of the test and measurement equipment is mandatory. In order to be able to

substantiate your measurement result, the equipment must be calibrated regularly. 3.6.2.1 The interval between calibrations will vary depending upon the frequency of use and state of

repair (e.g. a voltmeter is used frequently and should be calibrated at least every six (6) months plus after any repair is made to the instrument).

3.6.2.2 Whenever an instrument or piece of test equipment is sent out for calibration, a certification of

verification, from the firm performing the calibration, must accompany the instrument or equipment upon its return.

3.6.2.3 Each instrument and piece of test equipment shall have a label on it, informing the user when

the last calibration was done and the due date for the next calibration. 3.6.2.4 The facility must have a calibration procedure in place which will include a schedule for

calibration for each instrument and test equipment, a method of monitoring for when calibration is due and a way of ensuring removal of that equipment which is damaged or due for calibration from the shop floor.

3.6.2.5 Based upon Clauses 3.6.2 through 3.6.2.4, advise us on the procedure you intend to implement.

3.7 Machine Tools

The machines and equipment necessary to do the repair job must be in good repair and capable of handling the size and type of work you requested in the Scope of Repair.

3.7.1 State what machines and equipment you have which will be used in the handling and repair of

the motors showing maximum capacity such as lifting capability, maximum size and length (in the case of lathes and milling machines). Items to be included in this list are mills, lathes, hoists, cranes, ovens, vacuum tanks, welders, dynamic balancers, winding machines, etc.


3.8 Procurement

Procurement covers the purchase of parts and services including any subcontractors used for any machining, testing, etc.

3.8.1 The Qualified Facility is solely responsible for any work or service done by a subcontractor and

must be able to verify at all times that the result of the work or service provided meets the CSA Requirements.

3.8.1.1 State what work or services are subcontracted including the names and addresses of the firms

involved.

3.8.2 The Qualified Facility must be able to identify those products or parts that are to be CSA

Certified. 3.8.2.1 Advise how you will ensure this is done.

3.9 Inspection and Test (See also 3.10 - Documentation) 3.9.1 Upon completion of the motor repair, the motor must meet all the requirements of the applicable

standards of the CEC, Part II. 3.9.2 Before the facility installs the Qualified Repair Facility Nameplate, it must know for a fact that the

motor meets these requirements. Therefore, a procedure of inspections and tests is necessary. 3.9.2.1 In order for the inspection and test process to be effective you must ensure:

i. The inspector’s decisions cannot be subordinated by production; ii. The inspections and tests take into account all aspects of the motor; and iii. The process includes a method of verification to ensure that all areas of the motor that

did not conform to the requirements of the applicable standards were corrected. 3.9.3 Inspection procedures are divided into three (3) areas:

Incoming Inspections In-Process Inspections Final Inspection


1. Regardless of the size of the Facility, these areas of Inspection must exist. However, it is understood that due to the size of the Facility certain personnel will have more than one responsibility.

3.9.3.2 Incoming Inspection shall:

i. Inspect and verify incoming goods and services subcontracted; and ii. Inspect all incoming motors for repair to establish the extent of repair including

verification that in every case, all flame-paths and gaps are correct. 3.9.3.3 In-Process Inspection shall:

i. Inspect, test and verify that each step of repair has been done properly using the correct materials; and

ii. Stop, re-route or otherwise arrange for correction those items which were improperly done or in which incorrect materials were used.

3.9.3.4 Final Inspection shall:

i. Verify through test and inspection that the repaired motors meet the requirements of all the applicable standards;

ii. Verify the original nameplate is still in place; iii. Stop shipment and arrange for correction of any motor which does not comply with the

requirements of the applicable standards; and iv. Install the Qualified Facility Nameplate on the motors that are correct.

3.10 Documentation 3.10.1 In order for the Supervisors and floor personnel to carry out their jobs properly they must have

easy access to the most current applicable standards of the CEC, Part II. 3.10.2 A set of current Standards are to be located centrally (readily accessible) to the work area and

replaced when they are updated, lost or become illegible due to use. 3.10.3 Documentation for each repaired motor shall be kept and shall include:

i. The details of the motor received for repair; ii. When the motor arrived; iii. The condition of the motor in detail based on tests and measurements; iv. Exactly what repairs were made and what materials were used; and v. The condition of the motor at time of shipping in detail based on tests and

measurements. 3.10.4 The documentation in Attachment 4 is presented to assist you in establishing the necessary

forms and represent the minimum information required.

You may prepare your forms in any format you wish but they must contain all the information shown in Attachment 4.

Provide copies of the forms you will use. (List forms below:)


3.11 Ensuring Compliance 3.11.1 To ensure on-going compliance with the Qualification Program Requirements, the facility must:

i. Ensure the designated Supervisor or alternate person reviews each repair record to verify that all necessary information is provided and correct.

ii. Continually monitor the program for deviations from the Requirements. iii. Ensure that the applicable Standards are in place and current. iv. Advise CSA within thirty days when changes to key personnel, procedures or equipment

occur. 3.11.2 CSA International will from time to time make unannounced visits to the facility to verify that:

i. The procedures and processes have not changed and are effective. ii. The key personnel have not changed. iii. The Repair Records are accurate and complete. Iv The applicable Standards are available and current.

3.12. Declaration The above information is correct to the best of my knowledge.

Signed:

Date: (Administrator of the Qualification Program)

Signed:

Date:

(Officer of the Company)

FOR CSA INTERNATIONAL USE ONLY Clients Name:

CSA International Project No: Reviewed y CSA International Product Specialist: Name: Signature Date

Reviewed by: Name:

Title:

Signature:

Date:


ATTACHMENT 4

REPAIR RECORD

CSA QUALIFICATION OF FACILITIES ENGAGED IN THE REPAIR OF ELECTRICAL MOTORS AND GENERATORS FOR USE IN HAZARDOUS LOCATIONS

Index

INCOMING: Page No Original Nameplate Data 2 Inspection 3 Winding Data 4 Tests 4 SHOP REPAIR RECORD: Activities 5 Sealing Compound 5 Temperature Limiting Devices 6 Winding Materials 6 Winding Data 7 Shaft Detail 7 Subcontracted Work 7 Dielectric Test 8 No Load Tests 8 Locked Rotor Test 8 PHYSICAL DETAILS: Motor Diagram 9 Free Internal Volume 10 Bolt Details 10 Materials 10 Frame to Bracket Joint 11 Bracket to Bearing Cap Joint 12 Bearing Cap to Shaft Joint 12 Bracket to Shaft Joint 13 Outer Shaft Opening Evaluation 13 Junction Box Frame Joint 14 Junction Box Cover Joint 14 Conduit Entry 15 Cable Gland 15 Name Plate Details 15 Declaration 16 Supplement A (Labyrinth Shaft Joint) 17 Supplement B (Flinger) 18 Supplement C (Junction Box Adaptor Plate and/or Gland Plate 19 Supplement D (Terminal Studs) 20 Supplement E (Quick Reference Guide for Temp. Limits and Test Voltages.) 21 Supplement F (Depth of Sealing Compound) 23 Supplement G (Terminal Box Diagram) 24 Note: This suggested Repair Record may be used as a guide to create a shop specific Repair Record or may used as is. An

attempt has been made to make the Repair Record as non-generic as possible. Depending on the motor construction some fields will not be applicable. Choices concerning which fields are most appropriate will need to be made.

Please be reminded that sufficient data must be recorded to determine compliance with CSA standards C22.2 No. 145 and other applicable CEC, Part II standards.


REPAIR RECORD: (Note: When the information requested below is not applicable to the repair, “Not applicable” or “N/A” should be entered for record purposes. When the following information requested does not cover all necessary details additional sketches and dimensional data should be added. eg wound rotor, commutator, additional flame paths, etc) MACHINE DATA SHEET CUSTOMER:

JOB NO:

(A) ORIGINAL NAMEPLATE DATA Manufacturer’s Name:

Model: Style: Serial No.:

Frame:

Volts Hertz: Phase:

Hp: Kw: Amp:

Rpm: Duty

Ins Class: Temp Rise: Amb:

Date Code (Date 0f Manufacture): Hazardous Location Designations:

Class: Division: Group: Temp Code:

Yes ( ) CSA

No ( ) Work Stopped - Not Eligible For Qualified Repair Facility Program

Other Data (Specify):

Recorded By: Initial: Date:


(B) INCOMING INSPECTION RECORD OK DAMAGED *MISSING CONDITION INITIAL DATE

Received

Incoming Test

Dismantle

General Condition

Stator

Leads

Frame

Core

Rotor

Shaft

Journals

Keyways

Bracket – De

Bracket – Nde

Bearing Cap – De

Bearing Cap – Nde

Bearings – De

Bearings – Nde

Flinger

Conduit Box

Coupling

Blower

Hood

Motor Not Repairable – Disposition

*Motor must be complete, including terminal box(es), all components and flameproof joints checked and verified before leaving the Qualified Repair Facility. Also see section (G) for additional information required. Recorded By: Initial: Date:


(B) INCOMING INSPECTION RECORD (Continued)

Winding (Coil Data as Received): (Mark N/A if motor is not rewound)

Coils 1 2 3 4

Type (Mush, Form, etc)

Wire Size

No of Wires in Parallel

No of Turns


(C) INCOMING TESTS

Hi Pot AC ( ) DC ( ) Component Rated Voltage

Megger Volts Surge Volts Volts Duration Ohm Meter Result

Stator Winding

Rotor Winding

Armature Exciter Thermostats RTD’s Bearing Sensors



(D) SHOP REPAIR RECORD (D.1) Activities:

Component / Remarks Date Initial

Record Winding Data

Burnout

Strip

Clean Stator

Clean Mechanical Parts

Record Flame Paths per Item G

Wind Stator

Wind Rotor

Install Thermal Protectors

Connect Leads

Test Connections

Dip and Bake

Assemble, Install Bearings

Paint

Test

Other Operations

(D.2) Sealing Compound: (See Supplement F)

Replaced Not Replaced

Manufacturer Leads Separated YES / NO

Type Shrinkage YES / NO

Depth of Compound Cracking / Flaking YES / NO



(D.3) Temperature Limiting Devices: (For rewinds max temp = 80% of minimum auto-ignition temperature)

(See Supplement E)

Installed New Reused Existing

CSA Certified YES / NO CSA Certified YES / NO

Manufacturer Manufacturer

Type Type

Model No Model No

Electrical Rating Electrical Rating

Temperature Setting Temperature Setting


(D.4) Winding Materials:

Materials Manufacturer Type Size Temp Rating CSA/UL Certified

Magnet Wire

Slot Liners

Top Sticks

Phase Insulatio

Sleeving

Ties

Lead Wire

Lead Splices



(D.5) Winding (Coil Data as Shipped): (CSA Special Acceptance required if not within Manufacturer’s Certification) Voltage Change is within Manufacturer’s CSA Certification: YES / NO (Attach evidence)

Coils 1 2 3 4

Type (Mush, Form, etc)

Wire Size

No of Wires in Parallel

No of Turns


(D.6) Shaft Detail: (CSA Special Acceptance req’d. if not within Manufacturer’s Certification

New Shaft is within Manufacturer’s CSA Certification

YES / NO (Attach evidence)

Drawing attached with dimensions Drawing. No:

Drawing attached with material description Drawing. No: Drawing attached with rotor/armature attachment details

Drawing. No:

Drawing attached with shrink-fit tolerances Drawing. No: Recorded By: Initial: Date:

(E) WORK SUBCONTRACTED OUT Work Contracted Out Contractor’s Name Date Inspected By

1-

2-

3-

4- Recorded By: Initial: Date:


(F) TEST RECORD AFTER REPAIR (F.1) Dielectric Strength:

Between Components Method Volts AC ( ) DC ( ) Duration Result

Winding and Frame Hipot

Winding and Aux. Devices Hipot

Aux. Devices and Frame Hipot

Phases Surge

Hydrostatic Recorded By: Initial: Date:

(F.2) No Load (Free Running):

Amperes Temperature

Phase A Winding

Phase B Surface (External)

Phase C Bearing – DE

Bearing – NDE


(F.3) Temperature (Locked Rotor):

(See Clause 4.7 and Attachment B Repair Record D.3)

Max External Surface Temperature Recorded By: Initial: Date:


(G) PHYSICAL DETAILS NOTE: ALL FLAME PATH JOINTS AND GAPS MUST COMPLY WITH APPLICABLE CSA

STANDARDS.

Motor Parts. Flame Paths. 1. Motor Frame A. Frame to End Bracket Joint 2. End Bracket B. End Bracket to Inner Bearing Cap. 3. Inner Bearing Cap. C. End Bracket to Outer Bearing Cap. 4. Outer Bearing Cap. D. Shaft to Inner Bearing Cap. 5. Fan E Shaft to Outer Bearing Cap. 6. Fan Guard F. Adapter Plate to Motor Frame 7. Stator G. Adapter Plate to Termination Box 8. Rotor H. Termination Box Cover to Termination 9. Motor Shaft I. Termination Box Conduit Entry 10. Adapter Plate 11. Termination Box 12. Termination Box Cover 13. Cable Gland or Metal Conduit


(G.1) Dimensions:

Formula (3.143 x Radius x Radius x Length = Tot. Vol.) x 0.25 = App. Int. Free Vol.

Diameter Length Total Volume Approx. Internal Free Volume

(G.2) Bolt Details:

Secured Part No Bolts Material Grade Diameter Length Threads/In

Brackets (2)

Bearing Caps (3)

Box (4) to Frame

Box (4) to Cover

Cable Gland (7) (G.3) Materials:

Item Material Min. Thickness at Joint Min. Thickness Elsewhere

Frame (1)

Bracket (2)

Bearing Cap (3 or 4)

Terminal Box

Cable Gland

Flinger

Fan (5)

Min. Thickness Max. Size of Openings

Fan Guard (6) Recorded By: Initial: Date:

Note: For the Frame to Bracket Joint make 4 measurements approximately 45 degrees apart.


(G.4) Frame to Bracket Joint Motor Diagram Item (A):

NDE (Non-Drive End) DE (Drive End)

As Received As Shipped As Received As Shipped

Bracket

1

2

3

4

Bracket Average Frame

1

2

3

4

Frame Average Max Diametrical Gap

Min Axial Length

Max Radial Gap

Min Radial Length

Does the joint comply with Standard C22.2 No. 145? Yes: No: Initial:

If “NO” state action taken:


(G.5) Bracket to Bearing Cap Joint Motor Diagram Item (B or C):

Bearing Cap Type


Inner Outer As Received As Shipped As Received As Shipped

Bracket Diameter

Bearing Cap Diameter

Max Diametrical Gap

Min Axial Length

Max Radial Gap

Min Radial Length

Does the joint comply with Standard C22.2 No. 145? Yes: No: Initial:


(G.6) Bearing Cap to Shaft Joint Motor Diagram Item (B or C):

If this joint is being evaluated as Labyrinth attach Supplement A



Bearing Cap Diameter

Shaft Diameter

Max Diametrical Gap

Min Axial Length

Max Radial Gap

Min Radial Length

Does the joint comply with the Standard C22.2 No. 145? Yes: No: Initial:



(G.7) Bracket to Shaft Joint Motor Diagram Item (E) if Item (C) was part of

the End Bracket: See notes (1) and (2) below



Bracket Diameter

Shaft Diameter

Max Diametrical Gap

Min Axial Length Do the joint parameters comply with C22.2 No. 145? Yes: No: Initial:

If “NO” state action taken: Note: (1) If this joint is being evaluated as type Labyrinth, complete and attach Supplement A

(2) If a Flinger is considered to form part of the flame path, complete and attach Supplement B Note: If the Bracket to Shaft Joint is being evaluated solely for Class II Hazardous Locations (eg Class I Hazardous Location requirements have been met at the Bearing Cap to Shaft Joint) and the above joint parameters do not comply with C22.2 No. 145 Clause 8.3.2, the following evaluation may be used in lieu of obtaining the CSA Certified joint parameters from the motor manufacturer. (G.8) Bracket to Shaft Joint: Outer Shaft Opening Evaluation

Non-Drive End (NDE) Drive End (NE)

Path Length Joint Gap Path Length Joint Gap

Yes No Yes No Yes No Yes No

Evidence of wear and tear

Evidence of tampering

Edvidence of previous repair

Evidence of previous rebuid

Method used to correct Joint Length:

Method used to correct Joint Gap:


Do the joint parameters comply with C22.2 No. 145? Yes: No: Initial:


Note: Make and Complete a copy of this page for each Junction Box Note: Complete Supplement C for Junction Box Adaptor Plates and/or Gland Plates if applicable Note: Complete Supplement D for Terminal Studs if applicable.

(G.9) Frame to Junction Box Joints Motor Diagram Item (G):

Type Frame Dia Box Dia Gap Dim W Dim w Dim x Radial Gap Thread Size

Threads Engaged

Receive

Shipped



(G.10) Cover to Junction Box Joints Motor Diagram Item (H):


Threads Engaged

Receive

Shipped




(G.11) Conduit Entries:

Trade Size

No. of Threads

Depth to Integral Bushing

Dia of Integral Bushing Recorded By: Initial: Date:

(H) Cable Gland (1) Details of Cable Gland/Conduit Box Joint (2) Details of Packing: (Type of Material and Method) (I) CSA Qualification Namplate: The Nameplate has been marked as follows.

Job Number:

Date of Repair:

CSA File Number:

Temperature Limiting Device:

Other (Specify):


(J) DECLARATION:

I HAVE REVIEWED ALL RECORDS AND HEREBY VERIFY THAT ABOVE MACHINE COMPLIES WITH CSA STANDARD C22.2 No. 145 and Other Applicable CEC, Part II Standards.

Date Job Completed:

Date Job Shipped:

Signed:

Date:


Supplement A

Labyrinth Type Bracket to Shaft Joint:



Bearing Cap Dia F

Shaft Dia D

Bearing Cap Dia G

Shaft Dia E

Max Diametrical Gap

Min Total Axial Length

Min Shortest Axial Section

Min Dia Difference Do the joint parameters comply with C22.2 No. 145? Yes: No: Initial:



Supplement B

Bracket to Flinger Joint: Flinger must be metal when considered to form part of flame path.



Bracket Diameter

Flinger Diameter

Max Diametrical Gap

Min Axial Length

Max Radial Gap

Min Radial Length Shaft to Flinger Joint:



Flinger Diameter

Shaft Diameter

Max Diametrical Gap

Min Axial Length

Max Radial Gap

Min Radial Length

Secured to Shaft By



Bracket

Flinger

Shaft


Supplement C

Note: Use additional copies of this page if there is more than one Junction Box

Frame to Adaptor Plate Joint:


Threads Engaged

Receive

Shipped



Gland Plate Junction Box Joint :


Threads Engaged

Receive

Shipped




Supplement D

Note: Use additional copies of this page for auxiliary device terminals if applicable.

Bushing to Plate Joint: Threaded Seal Condition

Term Plate Dia

Bush Dia Gap Axial

Length RadialGap

Radial Length Size Engage Good Bad

Rec’d L1

Shipped

Rec’d L2

Shipped

Rec’d L3

Shipped

Bushing to Terminal Stud Joint: Threaded Seal Condition

Term Plate Dia

Bush Dia Gap Axial

Length RadialGap

Radial Length Size Engage Good Bad

Rec’d L1

Shipped

Rec’d L2

Shipped

Rec’d L3

Shipped



Adaptor Plate

Insulator

Terminal Stud


Supplement E

Temperature Limiting Device Quick Reference Guides For QF Shops

Maximum Maximum Allowed Cutoff Temperature External Surface Temp. 80% of External Standard / Rule.

Code Temp. Degrees C. Surface Temp. Degrees C. T2A 280 224 C22.2 No. 145-M86, Cl. 6.2 T2B 260 208 C22.2 No. 145-M86, Cl. 6.2 T2C 230 184 C22.2 No. 145-M86, Cl. 6.2 T2D 215 172 C22.2 No. 145-M86, Cl. 6.2 T3 200 160 C22.2 No. 145-M86, Cl. 6.2

T3A 180 144 C22.2 No. 145-M86, Cl. 6.2 T3B 165 132 C22.2 No. 145-M86, Cl. 6.2 T3C 160 128 C22.2 No. 145-M86, Cl. 6.2 T4 135 108 C22.2 No. 145-M86, Cl. 6.2

T4A 120 96 C22.2 No. 145-M86, Cl. 6.2 T5 100 80 C22.2 No. 145-M86, Cl. 6.2 T6 85 68 C22.2 No. 145-M86, Cl. 6.2

Maximum Allowed Cutoff

Hazardous Minimum Ignition Temp. 80% of Min. Standard / Rule. Location Groups Temp. Degrees C. Ignition Temp. Degrees C.

A 280 224 C22.1-98 Rule 18-052 B 280 224 C22.1-98 Rule 18-052 C 160 128 C22.1-98 Rule 18-052 D 215 172 C22.1-98 Rule 18-052 E 200 160 C22.2 No. 145-M86, Cl 10.2.1.5F 200 160 C22.2 No. 145-M86, Cl 10.2.1.5G 165 132 C22.2 No. 145-M86, Cl 10.2.1.5

Notes: Equipment where no temperature (T-Code) marking is evident, shall have the temperature limiting device set for the lowest Gas or Dust Group marked on the Motor. Equipment where a temperature (T-Code) marking is evident, shall have a temperature limiting device set at the lowest of T-Codes, or as per Groups E,F & G if marked on the motor.


Hy-pot Test Voltage Quick Reference Guide for QF Shops

Repair (60%) Rewind (100%) Motor Nameplate Voltage (2 X Rated + 1000) X .6 = Vac / 1min.

Vac / 1min. X 1.7 = Vdc / 1min. 2 X Rated + 1000 = Vac / 1min. Vac / 1min. X 1.7 = Vdc / 1min.

Value Test Vac. Test Vdc. Test Vac. Test Vdc. 100 720 1225 1200 2040

115 740 1255 1203 2090

120 745 1265 1240 2110

208 850 1445 1420 2410

220 865 1470 1440 2450

230 880 1490 1460 2480

240 890 1500 1480 2520

250 900 1530 1500 2550

260 910 1550 1520 2580

420 1105 1875 1840 3130

430 1120 1900 1860 3160

440 1130 1920 1880 3200

450 1140 1940 1900 3230

460 1150 1960 1920 3260

480 1180 2000 1960 3330

575 1290 2190 2150 3660

600 1320 2244 2200 3740

Test Values have been rounded up or down to nearest appropriate value.


Supplement F

Formula: C = 3.14 x D. C – Circumference. D – Diameter.


Supplement G

Flame paths: Cover to Terminal Box = X. Terminal Box to Motor Frame = A. Notes: When Bolts are on the Inside you measure to the Outside. (A-Above and W-Below.) When Bolts are on the Outside you measure to the Inside. (X-Above and W-Below.)


ATTACHMENT 5

REFERENCE DATA

Table 2 – Standard 30

Joint Widths and Gaps for Enclosures for Class I, Group C Hazardous Locations (See Clause 4.3.2)

Dimensions of joint, mm or inch Minimum width of joint Maximum Gap Size of enclosure* mm Inch mm inch

Up to and including 100 cm3 6 0.235 0.10 0.004

Above 100 cm3 and up to and including 500 cm3 φ 9.5 0.375 0.04 0.0015

Above 500 cm3 and up to and including 6000 cm3 ξ 9.5 0.375 0.04 0.0015

Above 100 cm3 and up to and including 2000 cm3 12.5 0.500 0.10 0.004

Above 2000 cm3 12.5 25.0

0.500 1.00

0.08 0.10

0.003 0.004

* The size of the enclosure shall be taken as the free internal volume (with the apparatus installed unless the enclosure is likely to be used without the apparatus).

Φ In order to qualify for this joint, the cover or removable part must have a thickness of at least 9.5 mm at the joint unless stiffened or reinforced metal of a lesser thickness ahs been found acceptable with respect to its physical strength and resistance to opening of the gap under internal pressure.

ξ In order to qualify for this joint, the cover or removable part must have thickness of at least 9.5 mm at the joint.

Notes:

100 cm3 = 6.1 cu. in. 500 cm3 = 30.5 cu. in. 2000 cm3 = 122 cu. in. 6000 cm3 = 366 cu. in.



Joint Widths and Gaps for Enclosures for Class I, Group D Hazardous Locations (See Clause 4.3.2)






Above 2000 cm3 12.5 25

0.500 1.00

0.1 0.2

0.004 0.008




Notes:

100 cm3 = 6.1 cu. in. 500 cm3 = 30.5 cu. in. 2000 cm3 = 122 cu. in. 6000 cm3 = 366 cu. in.

Table 4 – Standard 30 Joint Widths and Gaps for Enclosures for Gaseous Mines

(See Clause 4.3.2)





Above 2000 cm3 25 1.00 0.25 0.010


Notes:

100 cm3 = 6.1 cu. in. 2000 cm3 = 122 cu. in. 6000 cm3 = 366 cu. in.



Joint Widths and Gaps for Power Shafts - Enclosures for Class I, Group C Hazardous Locations (See Clause 4.3.5 and Figure 6)

Dimensions of joint

Maximum gap ξ diametrical (2 X B in Figure 6)

Minimum width of joint

(A in Figure 6) Sleeve

bearings Ball and Roller

Bearings

Size of enclosure* mm Inch mm inch mm inch

Up to and including 100 cm3 (6.1 cu. inch) 6

12.5. 25 40

0.235 0.500 1.00

1.570

0.20 0.25 0.30 0.40

0.008 0.010 0.012 0.015

0.3 0.4

0.45 0.6

0.012 0.015 0.018 0.024

Above 100 cm3 and up to and including 2000 cm3 (> 6.1 cu. in. to 122 cu. inch)

12.5 25 40

0.500 1.00

1.570

0.20 0.25 0.30

0.008 0.010 0.012

0.3 0.4

0.45

0.012 0.015 0.018

Above 2000 cm3 (> 122 cu. inch) 12.5 25 40

0.500 1.00

1.570

0.15 0.20 0.25

0.006 0.008 0.100

0.2 0.3 0.4

0.008 0.012 0.015

* The size of the enclosure shall be taken as the free internal volume

ξ For Class I, Group C labyrinth gland joints see Table 8.



Joint Widths and Gaps for Power Shafts for Enclosures for Class I, Group D Hazardous Locations and Gaseous Mines

(See Clause 4.3.5 and Figure 6)

Dimensions of joint

Maximum gap ξ diametrical (2 X B in Figure 6)


(A in Figure 6) Sleeve

bearings Ball and Roller

Bearings

Size of enclosure* mm Inch mm inch mm inch

Up to and including 100 cm3 6

12.5. 25 40

0.235 0.50 1.00 1.57

0.30 0.35 0.40 0.50

0.012 0.014 0.015 0.020

0.46 0.50 0.60 0.75

0.018 0.020 0.024 0.030

Above 100 cm3 and up to and including 1050 cm3

6 12.5 25 40

0.235 0.50 1.00 1.57

--- 0.30 0.40 0.50

--- 0.012 0.015 0.020

0.38 0.46 0.60 0.75

0.015 0.018 0.024 0.030


12.5 25 40

0.50 1.00 1.57

0.30 0.53 0.64

0.012 0.021 0.025

0.46 0.60 0.75

0.018 0.024 0.030


12.5 25 40

0.500 1.00 1.57

0.20 0.53 0.64

0.008 0.021 0.025

0.30 0.60 0.75

0.012 0.024 0.030

Above 6000 cm3 with joint length up to and including 2300

25 40 63

1.00 1.57 2.48

0.40 0.64 0.75

0.015 0.025 0.030

0.60 0.75 ---

0.024 0.030

---

Above 6000 cm3 with joint length up to and including 2300

25 40

1.00 1.57

0.40 0.50

0.015 0.020

0.60 0.75

0.024 0.030

* The size of the enclosure shall be taken as the free internal volume

ξ For Class I, Group C labyrinth gland joints see Table 8.

Notes:

100 cm3 = 6.1 cu. in. 1050 cm3 = 64 cu. in. 2000 cm3 = 122 cu. in. 6000 cm3 = 366 cu. in. 2300 = 90.5 in.



Widths and Gaps of Labyrinth Joints for Power Shafts for Enclosures For Class I, Groups C and D Hazardous Locations and Gaseous Mines

(See Clause 4.3.5, Table 6 and Figure 3)

Dimensions of joint, mm or inch (see Figure 3)

*

Minimum total Width of Labyrinth joint

Minimum width of shortest section

Minimum difference between diameters at stop

Maximum gap (diametrical) ball, sleeve, and roller bearings

Size of enclosure (W) (w) (D-E) (F-D) or (G-E)

Up to and including 6000 cm3 with end shield joint length not greater than 810 mm

29 mm (1.15 in)

41mm

(1.60 in)

3.2 (0.125 in)

3.2

(0.125 in)

3.2 (0.125 in)

3.2

(0.125 in)

0.53 (0.021 in)

0.64

(0.025 in)

Above 6000 cm3 with Joint length greater Than 810 mm but Not greater than 2300 mm

41 (1.6 in)

67

(2.64 in)

3.2 (0.125 in)

3.2

(0.125 in)

6 (0.235 in)

6

(0.235 in)

0.64 (0.025 in)

0.75

(0.030 in)

Above 6000 cm3 with Joint length greater Than 2300 mm

50 (2.0 in)

75

(3.0 in)

6 (0.235 in)

25

(1.0 in)

6 (0.235 in)

6

(0.235 in)

0.64 (0.025 in)

0.75

(0.030 in) * The size of the enclosure shall be taken as the free internal volume

Notes:

800 mm = 31.89 in. 2300 mm = 90.5 in. 6000 cm3 = 366 cu. in.

Table 9 Minimum Flame Path

At Bolt Holes (See Clause 4.7.2 and Figure 2.)

Required minimum Width of joint (W),

mm (in.)

Minimum flame Path (w), mm (in.)

6 (0.235) 9.5 (0.375)

12.5 (0.500) 16 or wider (0.630)

6 (0.235) 8 (0.315) 8 (0.315)

9.5 (0.375)



Usable Space In Terminal Boxes (For Machines 750V and less and copper conductors)

(See Clauses 4.4.3, 4.4.4, 4.4.7, 4.4.8, 4.4.12, 10.2.4, and 11.2.3.3.)

Col No. 5

Minimum useable volume cm3 in2 123 19 164 25.4 221 34 330 51 490 76 690 107 820 127 980 152

1 150 178 1 340 208 1 720 267 2 130 330 2 620 406 3 030 470 3 610 560 4 060 629 4 900 760 5 900 915 7 200 1116 8 200 1271 9 800 1519

10 700 1658 13 100 2030 14 700 2279



Minimum Spacings for Bare Live Parts (See Clauses 4.8.1, 4.8.3, 4.8.5, 4.8.7, 4.9, 6.11.2, 9.2.9.2, 9.2.9.3,

10.2.5.2, 10.2.5.3, and 11.4.8.2.)

Minimum spacings, mm or (inch)

Between bare live parts of different voltage

Between bare live parts and non-current-carrying metal

Between bare live parts and removable metal enclosures

Parts Involved

Maximum voltage

involved Through

air Over

surface Through

air Over

surface Through

air Over

surface

Machines having a frame diameter* of 180 mm (7.09 in.) or smaller

Installer wiring Terminals

31 – 375 (1.22 – 14.76)

376 – 750

(14.8 – 29.5)

6.3 (0.250)

6.3

(0.250)

6.3 (0.250)

6.3

(0.250

3.2 (0.125)

6.3

(0.250)

6.3 (0.250)

6.3

(0.250)

3.2 (0.125)

9.8

(0.385)

6.3 (0.250)

9.8

(0.385)

Parts other than Wiring terminals, but Including straps and bars connected to such terminals

31 – 375 (1.22 – 14.76)

376 – 750

(14.8 – 29.5)

1.6 (0.063)

3.2

(0.125)

2.4 (0.094)

6.3

(0.250)

1.6 (0.063)

3.2ξ

(0.125)ξ

2.4 (0.094)

6.3ξ

(0.250)ξ

3.2 (0.125)

6.3

(0.250)

6.3 (0.250)

6.3

(0.250)

Machines having a frame diameter* lager than 180 mm (7.09 in.) or smaller

Installer wiring terminals

31 – 375 (1.22 – 14.76)

376 – 750

(14.8 – 29.5)

6.3 (0.250)

9.5

(0.375)

6.3 (0.250)

9.5

(0.375)

6.3 (0.250)

9.5

(0.375)

6.3 (0.250)

9.5

(0.375)

6.3 (0.250)

9.8

(0.385)

6.3 (0.250)

9.8

(0.385)

Parts other than Wiring terminals, but Including straps and bars connected to such terminals

31 – 375 (1.22 – 14.76)

376 – 750

(14.8 – 29.5)

3.2 (0.125)

6.3

(0.250)

6.3 (0.250)

9.5

(0.375)

3.2ξ (0.125)ξ

6.3ξ

(0.250)ξ

6.3ξ (0.250)ξ

9.5ξ

(0.375

6.3 (0.250)

9.8

(0.385)

6.3 (0.250)

9.8

(0.385)

* This is the nominal diameter measured in the plane of the laminations of the circle circumscribing the stator frame, excluding lugs, cooling fins, boxes, etc, used solely for motor mounting assembly, connections etc.

ξ Film-coated wire is considered an uninsulated live part. However, a spacing of 2.4 mm minimum, through air or over the surface is acceptable between film coated wire, rigidly supported and held in place on a coil, and a dead metal part where the voltage does not exceed 375 V. Where the coil has been suitably varnish impregnated, treated or encapsulated, the 2.4 mm spacing is acceptable where the voltage does not exceed 750 V.

Note: The oversurface spacings between the live parts of solid-state devices (such as diodes and triacs in metal cases) and supporting metal surfaces may be one-half of the spacings given in Table 3, but not less than 1.6 mm.



Path Lengths (Joint Widths) and Gaps for Enclosures for Class I, Group C Hazardous Locations (See Clause 5.2.2.1.)


Up to and including 100 cm3 6.3 0.250 0.10 0.004




Above 2000 cm3 12.7 25.4

0.500 1.000

0.08 0.10

0.003 0.004




Notes:

100 cm3 = 6.1 cu. in. 500 cm3 = 30.5 cu. in. 2000 cm3 = 122 cu. in.



Path Lengths (Joint Widths) and Gaps for Enclosures for Class I, Group D Hazardous Locations (See Clause 5.2.2.1.)


Up to and including 100 cm3 6.3 0.250 0.15 0.006




Above 2000 cm3 12.7 25.4

0.500 1.000

0.10 0.20

0.040 0.080




Notes:

100 cm3 = 6.1 cu. in. 500 cm3 = 30.5 cu. in. 2000 cm3 = 122 cu. in.



Path Lengths (Widths) and Gaps of Stepped joints* for Class I, Groups C and D (See Clause 5.2.2.1)

Dimensions of joint, mm or inch

Minimum path length (width of joint) Maximum gap at section

Total (see L – Fig. 2d)

Radial section (see x – Fig.

2d) Radial

(at x – Fig. 2d) Axial (diametrical) (at y –

Fig. 2d) Internal free volume mm inch mm inch mm inch mm inch

Up to and including 98.3 cm3

3.2 6.3

0.125 0.250

1.2 1.6

0.047 0.063

0.04 0.10

.0015

.0040 0.04 0.20

.0015

.0078

Above 98.3 cm3

and up to and including 1065.15 cm3

3.2 12.7

0.125 0.500

1.2 3.2

0.047 0.125

0.04 0.10

.0015

.0040 0.04 0.20

.0015

.0078

Above 1065.15 cm3 up to and including 2000 cm3

9.5 12.7 12.7 12.7 12.7

0.375 0.500 0.500 0.500 0.500

1.2 1.2 1.2 2.4 3.2

0.047 0.047 0.047 0.095 0.125

0.04 0.05 0.04 0.05 0.10

.0015

.0020

.0015

.0020

.0040

0.08 0.08 0.10 0.10 0.20

.0030

.0030

.0040

.0040

.0078

Above 2000 cm3 up to and

including 6000 cm3

9.5 12.7 12.7 12.7 12.7 25.4

0.375 0.500 0.500 0.500 0.500 1.000

1.2 1.2 1.2 2.4 3.2 6.3

0.047 0.047 0.047 0.095 0.125 0.250

0.04 0.05 0.04 0.05

0.08 (0.10) 0.10 (0.20)

.0015

.0020

.0015

.0020 .0030 (.0040) .0040 (.0078)

0.08 0.08 0.10 0.10

0.15 (0.20) 0.20 (0.40)

.0030

.0030

.0040

.0040 .006 (.0078) .0078 (0.016)

Up to and including 6000 cm3, with joint width up to and including 813 mm

9.5 12.7 12.7 12.7

0.375 0.500 0.500 0.500

1.2 1.2 1.2 2.4

0.047 0.047 0.047 0.095

0.04 0.05 0.04 0.05

.0015

.0020

.0015

.0020

0.08 0.08 0.10 0.10

.0030

.0030

.0040

.0040

Greater than 6000 cm3 with joint width greater than 813 mm

12.7 19.0 25.4 25.4 31.7

0.500 0.750 1.000 1.000 1.250

3.2 1.6 1.6 6.3 1.6

0.125 0.063 0.063 0.250 0.063

0.08 (0.10) 0.05 0.08

0.10 (0.20) 0.12

.0030 (.0040) .0020 .0030

.004 (.0078) .0047

0.15 (0.20) 0.10 0.17

0.20 (0.40) 0.23

.006 (.0078) .004 .0067

.0078 (.015) .009

* Except swivel type ½ inch conduit fittings – see Table 4. Notes: (1) Dimensions shown in parenthesis apply to Class I, Group D only. (2) Explosion tests may be applied to machines having joints between stator rings and laminated field frame section

fabricated under high pressure and held together by rivets or channel irons and welding, if path length (joint) is not less than 6.3 mm in length (width) and a 0.038 mm thickness gauge cannot be inserted more than 3.2 mm.

Note 98.3 cm3 = 6.0 cu. in. 2000 cm3 = 122 cu. in. 1065.15 cm3 = 65 cu. in. 6000 cm3 = 366 cu. in. 813 mm = 32 in.


Table 4 - Standard 145

Dimensions of Stepped Joints in Swivel-Type ½ Trade Size Conduit Fittings

(See Clause 5.2.2.1 and Figure 3.)

Dimensions

Radial path Axial Path Minimum Total path Length (width of joint)

Minimum length (L1)

Maximum gap (E)

Minimum length (L2)

Maximum gap (diametrical clearance) (D – C)

mm inch mm inch mm inch mm inch mm inch

9.5* 0.375 3.2 0.125 0.04 0.0016 6.3 0.250 0.08 0.003

12.7* 0.500 3.2 0.125 0.04 0.0016 6.3 0.250 0.10 0.004

9.5 ξ 0.375 --- --- --- --- 9.5 (LT)

0.375 (LT) 0.08 (B minus A) 0.08 (B minus A

* This is a rabbit joint between fitting and machined joint surfaces at the seal for the motor leads.

ξ This joint is between the hole in the fitting and the unthreaded portion of the clamping screw that secures the fitting to the machine.

Table 5 – Standard 145 Thread Engagement for Parallel Threads

(See Clause 5.2.3.1)

Maximum diameter of threaded sections Maximum number of threads

mm inch mm inch Minimum number of

threads engaged No limit

9.5 Over 9.5 Over 9.5 Over 9.5

No limit 9.5

Over 9.5 Over 9.5 Over 9.5

20 24 24 28 32

20 24 24 28 32

5 5 6 7 8


Table 6 – Standard 145 Path Lengths (Joint Widths) and Gaps for Shafts for Enclosures for Class I, Group C Hazardous

Locations (See Clause 5.2.5.1 and Figure 5)

Dimensions of joint, mm or inch Maximum gap ξ (diametrical) (2 X B in Figure 5) Minimum width of

joint (A in Figure 5) Sleeve Bearings

Ball and roller Bearings

Size of enclosure* mm inch mm inch mm inch

Up to and including 100 cm3

6.3 12.7 25.4 40.9

0.25 0.50 1.0 1.6

0.20 0.26 0.31 0.41

0.008 0.010 0.012 0.016

0.31 0.41 0.46 0.61

0.012 0.016 0.018 0.024


12.7 25.4

40.89

0.5 1.0 1.6

0.20 0.26 0.31

0.008 0.010 0.012

0.31 0.41 0.46

0.012 0.016 0.018

Above 2000 cm3 12.7 25.4 40.9

0.5 1.0 1.6

0.15 0.20 0.26

0.006 0.008 0.010

0.20 0.31 0.41

0.008 0.012 0.016

* The size of the enclosure shall be taken as the free internal volume. ξ For Class I, Group C labyrinth joints see Table 7. Note 100 cm3 = 6.1 cu. in. 2000 cm3 = 122 cu. in.



Path Lengths (Joint Widths) and Gaps of Labyrinth Joints for Shafts for Enclosures for Class I, Groups C Hazardous Locations

(See Clause 5.2.5.1 and Figure 4)

Dimensions of joint, mm or inch (see Figure 4)

Minimum total

path length (width of

labyrinth joint)

Minimum path length (width of shortest

section)

Minimum difference between

diameters at step

Maximum gap (diametrical)

ball, sleeve, and roller bearings

Size of enclosure* (W) (L) (D – E) (F – D) or (G – E)

Up to and including 6000 cm3 with end shield joint length not greater than 810 mm

29 mm (1.15 in)

41mm (1.6 in)

3.2 (0.125 in)

3.2

(0.125 in)

3.2 (0.125 in)

3.2

(0.125 in)

0.53 (0.021 in)

0.64

(0.025 in)

Above 6000 cm3 with joint length greater than 810 mm but not greater than 2300 mm

41 (1.6 in)

67

(2.65 in)

3.2 (0.125 in)

3.2

(0.125 in)

6.3 (0.248 in)

6.3

(0.248 in)

0.64 (0.025 in)

0.75

(0.029 in)

Above 6000 cm3 with joint length greater than 2300 mm

50 (2.0 in)

75

(0.0295 in)

6.3 (0.248 in)

25.4

(1.0 in)

6.3 (0.248 in)

6.3

(0.248 in)

0.64 (0.025 in)

0.76

(0.030 in)

* The size of the enclosure shall be taken as the free internal volume.

Note: Dimension H in Figure 4 shall be not less than 1.6 mm for any size of enclosure

6000 cm3 = 366 cu. in. 810 mm = 31.89 cu. in. 2300 mm = 90.5 cu. in.



Path Lengths (Joint Widths) and Gaps for Shafts for Enclosures for Class I, Group D Hazardous Locations

(See Clause 5.2.5.1 and Figure 5)

Dimensions of joint, mm or inch Maximum gap

(diametrical) ( 2 X B in Figure 5)


(A in Figure 5) Sleeve Bearing ξ Ball and Roller

Bearings Size of enclosure* mm inch mm inch mm inch

Up to and including 100 cm3

6.3 12.7 25.4 40.9

0.25 0.50 1.0 1.6

0.31 0.35 0.41 0.50

0.012 0.013 0.016 0.020

0.46 0.50 0.61 0.76

0.018 0.020 0.024 0.030

Above 100 cm3 and up to and Including 1050 cm3

6.3 12.7 25.4 40.9

0.25 0.50 1.0

1.61

--- 0.31 0.41 0.50

---- 0.0.12 0.016 0.020

0.38 0.46 0.61 0.76

0.015 0.018 0.024 0.030


12.7 25.4 40.9

0.5 1.0 1.6

0.31 0.53 0.64

0.012 0.020 0.025

0.46 0.61 0.76

0.018 0.024 0.030


12.7 25.4 40.9

0.50 1.0

1.61

0.20 0.53 0.64

0.008 0.020 0.025

0.31 0.61 0.76

0.012 0.024 0.030

Above 6000 cm3 with joint length up to and including 2300 mm

25.4 40.9 63.5

1.0 1.61 2.50

0.41 0.64 0.76

0.016 0.025 0.030

0.61 0.76 ----

0.024 0.030

---- Above 6000 cm3 with joint length greater than 2300 mm

25.4 40.9

1.0 1.610

0.41 0.50

0.016 0.020

0.61 0.76

0.024 0.030

* The size of the enclosure shall be taken as the free internal volume.

ξ These joints are in addition to those through the sleeve bearing; see clause 5.2.5.1 for special cases where the bearing may be considered part of the path.

Note 100 cm3 = 6.1 cu. in.; 1050 cm3 = 64 cu. in.; 2000 cm3 = 122 cu. in.; 6000 cm3 = 366 cu. in.; 2300 mm = 90.5 in.



Minimum Flame Path at Bolt Holes (See Clause 5.4.2)

Required minimum path length (width of joint) (L), Minimum path length (I),

mm inch mm inch 6.3 0.25 6.3 0.25 9.5 0.375 7.9 0.31

12.7 0.500 7.9 0.31 16 or wider 0.630 or wider 9.5 0.375

Table 11 – Standard 145 Path Length (Effective Width) of Gasketed Joints

(See Clause 8.2.4.2.)

Maximum opening dimension Minimum gasket path length, width mm inch mm inch 305 12.0 3.2 0.125 914 36.0 4.7 0.185

Over 914 Over 36.0 9.5 0.375

Table 12 - Standard 145 Dimensions of Stepped Joints in Swivel-Type

½ Trade Size Conduit Fittings (See Clause 8.5.4 and Figure 3)

Dimensions, mm or inch Minimum Radial Path Axial Path

Total path Length (width

of joint) Minimum

length (L1) Maximum

gap (E) Minimum length

(L2) Maximum gap (diametrical

clearance) (D – C) mm in mm in mm in mm in mm in 4.7* 0.185* 1.2 0.04 0.05 0.0020 1.2 0.047 0.10 0.0040

6.3* 0.250* 1.2 0.04 0.08 0.0030 1.2 0.047 0.15 0.0060

4.7ξ 0.185ξ ---- ---- ---- ---- 4.7(LT) 0.185(LT)

0.05 (B minus A)

0.0020 (B minus A)

6.3ξ 0.250ξ ---- ---- ---- ---- 6.3(LT) 0.250(LT)

0.08 (B minus A)

0.0030 (B minus A)

* This is a rabbit joint between fittings and machined joint surfaces at the seal for the motor leads. ξ This joint is between the hole in the fitting and the unthreaded portion of the clamping screw that secures the fitting to

the machine.

ref no: n07-016 date: march 23, 2007 · ref no: n07-016 date: march 23, 2007 certification notice...

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