GIS 12-205-Synchronous Motors (IEC)

Document No.

GIS 12-205

Applicability

Group

Date

17 November 2003

Guidance on Industry Standard for Synchronous Motors (IEC)

GIS 12-205

BP GROUP ENGINEERING TECHNICAL PRACTICES

17 November 2003

GIS 12-205 Guidance on Industry Standard for Synchronous Motors (IEC)

Foreword This is the first issue of Engineering Technical Practice (ETP) GIS 12-205. This Guidance on Industry Standard (GIS) is based on the following heritage documents from merged BP companies:

AMOCO (ACES) A EL-MT-546-P

Electrical—Motors—Synchronous—Supply Specification

ARCO (APCES) ES 406-91

Form-Wound Brushless Synchronous Motors 500 Horsepower and Larger

BP (RPSE) RP 12-11 GS 112-4

Electrical Systems and Installations - Motors Guidance for Specification High Voltage Induction Motors

BP Chemical US CP 17-3-3

Synchronous Motors

Copyright  2003, BP Group. All rights reserved. The information contained in this document is subject to the terms and conditions of the agreement or contract under which the document was supplied to the recipient’s organization. None of the information contained in this document shall be disclosed outside the recipient’s own organization without the prior written permission of Manager, Standards, BP Group, unless the terms of such agreement or contract expressly allow.

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Table of Contents Page Foreword ........................................................................................................................................ 2 1.

Scope .................................................................................................................................... 5

2.

Normative references............................................................................................................. 5

3.

General.................................................................................................................................. 5 3.1. Documentation............................................................................................................ 5 3.2. Exceptions .................................................................................................................. 5 3.3. Conflicts...................................................................................................................... 6 3.4. Quality assurance ....................................................................................................... 6

4.

Standard design requirements ............................................................................................... 6 4.1. General....................................................................................................................... 6 4.2. Certification for use in hazardous areas ...................................................................... 7

5.

Special design requirements.................................................................................................. 7 5.1. Duty and rating ........................................................................................................... 7 5.2. Construction................................................................................................................ 7 5.3. Environmental protection ............................................................................................ 7 5.4. Windings and cable terminations ................................................................................ 8 5.5. Bearings and lubrication............................................................................................ 10 5.6. Critical speeds .......................................................................................................... 11 5.7. Vibration ................................................................................................................... 11 5.8. Plant identification..................................................................................................... 12 5.9. Mechanical handling ................................................................................................. 12 5.10. Painting..................................................................................................................... 12

6.

Noise ................................................................................................................................... 12 6.1. Noise emission ......................................................................................................... 12 6.2. Noise reduction......................................................................................................... 12

7.

Tests.................................................................................................................................... 13 7.1. Standard tests........................................................................................................... 13 7.2. Overspeed test ......................................................................................................... 14 7.3. Heat run.................................................................................................................... 14 7.4. Vibration ................................................................................................................... 14

8.

Documentation..................................................................................................................... 14 8.1. Data sheet ................................................................................................................ 14 8.2. Coil quality and interturn tests................................................................................... 14 8.3. Winding data............................................................................................................. 14 8.4. Test documentation .................................................................................................. 14 8.5. General arrangement drawing................................................................................... 14

Bibliography .................................................................................................................................. 15

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1.


Scope This GIS provides guidance on industry standard for the design, materials, fabrication, inspection, testing, documentation, and preparation for shipment of synchronous motors based on IEC standards.

2.

Normative references The following normative documents contain requirements that, through reference in this text, constitute requirements of this technical practice. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this technical practice are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

International Electrotechnical Commission (IEC) IEC 60034-1 IEC 60034-5

IEC 60034-6 IEC 60034-7

IEC 60034-14

IEC 60079

Rotating electrical machines – Part 1: Rating and performance. Rotating electrical machines – Part 5: Degrees of protection provided by the integral design enclosures of rotating electrical machines (IP code) – Classification. Rotating electrical machines – Part 6: Methods of cooling (IC code). Rotating electrical machines – Part 7: Classification of types of construction, mounting arrangements and terminal box position (IM Code). Rotating electrical machines – Part 14: Mechanical vibration of certain machines with shaft heaths 56 mm and higher – Measurement, evaluation and limits of vibration. Electrical apparatus for explosive gas atmospheres – All Parts.

International Standards Organization (ISO) ISO 281 ISO 492 ISO 1940-1

3. 3.1.

Rolling bearings – Dynamic load ratings and rating life. Rolling bearings—Radial bearings—Tolerances. Mechanical vibration—Balance quality requirements of rigid rotors— Part 1: Determination of permissible residual unbalance.

General Documentation A specification suitable for enquiry or purchasing can be derived from this section of the GIS by retaining the technical body unaltered but omitting the data page and all commentary. This section of the GIS shall be read in conjunction with an enquiry or purchase order and all data sheets associated therewith. The purchaser and vendor shall both complete the data sheets.

3.2.

Exceptions Tenders for the supply of equipment against this section of the GIS shall either include an unqualified affirmation regarding compliance with this section of the GIS or a complete list of exceptions.

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A vendor may offer other suitable proposals where price or technical advantage may accrue, but such proposals shall form a supplement to the main tender. 3.3.

Conflicts If any of the reference documents conflict and the provisions of this GIS do not establish definition, then the vendor shall highlight this, and shall state the basis of design used.

3.4.

Quality assurance Verification of the vendor's quality system is normally part of the pre-qualification procedure, and is therefore not specified in the core text of this section of the GIS. If this is not the case, clauses should be inserted to require the vendor to operate and be prepared to demonstrate the quality system to the purchaser. The quality system should ensure that the technical and QA requirements specified in the enquiry and purchase documents are applied to all materials, equipment and services provided by sub-contractors and to any free issue materials.

4. 4.1.

Standard design requirements General Motors shall comply with relevant parts of IEC 60034. Any requirement to meet other national interpretations of IEC 60034, with or without CENELEC Harmonisation Document requirements, must be identified and agreed in writing between the purchaser and the vendor. This procedure is intended to be the means by which particular local needs can be met whilst at the same time properly documenting deviations from the normal BP requirements. The following requirements are considered to be ‘normal’ unless site specific conditions call for other, more stringent, requirements that shall be specified on the data sheet: Motors shall be capable of providing the momentary excess torque as specified in IEC 60034-1. Synchronous machines are not suitable for reconnecting to a supply just after being switched off or if synchronism is lost. To avoid this condition suitable controls and protection should be provided. This could be provided as part of the switchgear supply where generator protection is included in that package but it is not uncommon for this to form part of a generator control package where that package includes the generator protection. The motor torque characteristics during run up shall be adequate for starting the driven load under the applied voltage, and load torque and inertia conditions specified. The motor shall be suitable for a maximum of 1000 starts per year. The motor shall be capable of the following starting performance with the conditions specified: Two starts in succession, coasting to rest between starts, with the motor initially at ambient temperature One start with the motor initially at its rated load operating temperature The manufacturer shall assign safe stalled times for cold and hot conditions. These are the times that the motor may remain stalled without damage. The cooling arrangement shall be IC511 for air-cooled machines and IC71W for water-cooled machines. Cooling arrangement shall be in accordance with IEC 60034-6. Cooling water for water-cooled motors shall normally have a maximum temperature of 25οC unless higher temperatures are specified in the data sheet. Cooler materials shall ultimately be matched to the cooling water analysis (furnished to the successful Page 6 of 16

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bidder) and the proposed materials shall be identified. Provision should be made within the motor to prevent leakage of cooling water on to the windings or rotating parts of the motor. Air-cooled motors shall not draw their air from the drive end of the machine and should be designed for the maximum average ambient temperature specified in the data sheet. If electrically operated fans are employed these shall have full redundancy and bidders shall clearly state the output achievable with a single fan operating. All motors for use in hazardous areas shall comply with the relevant parts of IEC 60079 or alternatively the relevant parts of the CENELEC 500XX series of documents or national variants. Motors for use in hazardous areas in the European Economic Area must comply with the relevant EN 500XX series CENELEC standards or national variants and these should be referenced in place of the IEC 60079 series for the relevant protection concepts. Horizontally mounted machines shall be IM 1001 and vertical flange mounted machines shall be IM 3011 in accordance with Code II of IEC 60034-7. Component parts of the motor shall be bonded together and to the earth terminal in order to prevent arcing and sparking in service. All components of the excitation circuit shall be sized to continuously satisfy the maximum flux demand of the synchronous motor. 4.2.

Certification for use in hazardous areas Motors for use in Zone 1 or Zone 2 Hazardous Areas shall have certification from a recognised National Certifying Authority. The manufacturer shall submit copies of the relevant certification documents with the tender.

5. 5.1.

Special design requirements Duty and rating Motors shall have a continuous running duty designated as type S1 in accordance with paragraph 4.2.1 of IEC 60034-1. Motors shall be capable of meeting their specified duty for 26,000 hours (3 years) without being stopped for maintenance purposes.

5.2.

Construction The motor frame and enclosure shall be of welded steel plate and sheet to form a rigid, selfsupporting and torsion-resistant assembly that can be shipped in one piece. The base structure shall have adequate facilities for lifting, levelling, aligning and anchoring the entire motor. The preferred configuration of the motor and brushless exciter shall be of horizontal construction with two or three pedestal-type sleeve bearings on a common base plate, allowing the separate removal of the main motor and exciter.

5.3.

Environmental protection The degree of ingress protection shall be in accordance with IEC 60529 and suitable for the application and installation site. Where no data is available to indicate a more stringent specification and where an outdoor installation is involved, the protection shall be IP55. The degree of ingress protection required (IP55) is entirely suitable for situations where machines are not subject to excessive dust settlement or immersion in water.

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If any doubt exists then the particular conditions pertaining should be evaluated and a special enclosure agreed between purchaser and vendor. Where the machine will be installed inside an enclosure a rating of IP20 may be contemplated. However where the enclosure is large and there could be moisture or dust/debris above the machine the minimum protection to be specified should be IP23 Machines shall be suitable for a Relative Humidity of 90% with occasional condensation. Vertically mounted motors having a single shaft extension at the bottom shall be protected with a rain cowl (IPX2) supplied by the manufacturer. Anti-condensation heaters shall not be provided unless specified on the data sheet. If heaters are provided, they shall be easily accessible without requiring dismantling of the motor. The purpose of an anti-condensation heater is to preclude the possibility that the specified insulation level of the machine is seriously reduced by the entry of water or water vapour into the machine. Modern non-hygroscopic insulation materials largely obviate the possibility of this occurring and manufacturers generally take good care to ensure that all conducting items are insulated to a high standard. In order to prevent the ingress of water or other harmful matter prior to cabling, open cable entries shall be adequately sealed (IP55) before the motor is despatched from the manufacturer's works. Where a drain hole is provided, it shall be at the lowest point on the stator, subject to accessibility for the removal of the threaded plug when the machine is mounted in the service position. In the case of motors for use in hazardous areas, the drain hole shall be sealed with a draining device approved by the Certifying Authority. Care must be exercised to ensure that the means of removing and replacing drain plugs are not impeded by the position in which the motor is mounted. This is not always the responsibility of the motor manufacturer but often the responsibility of a 'package' (e.g. pump set) vendor who provides the mounting (e.g. bedplate) for the motor. 5.4.

Windings and cable terminations Stator and rotor windings of the motor and exciter shall generally be constructed using Class F insulation materials. During normal service, the temperature rise values of Class B materials shall not be exceeded. The temperature rises shall be limited to Class B unless the manufacturer offers Class H insulation of proven design in which case the temperature rise to Class F shall be considered. The required rating of a motor for a particular piece of driven equipment is usually defined by the supplier of the driven equipment, after taking into account any BP requirements. This rating takes account of any design uncertainty and manufacturing tolerances that may arise and therefore the motor should be suitable for all eventualities that may arise. Traditionally, industry has also 'built-in' a further safety margin for the motor by specifying Class B temperature rises (80°C) whilst employing Class F insulation materials (105°C rise), both pertaining to operation in a 40°C ambient air temperature or with 25°C cooling water. If operating conditions are such that the machine is unlikely to be overloaded and if the ambient conditions are well removed from standard then consideration should be given to specifying Class F rises for Class F materials, especially when large machines are involved and significant weight or cost savings can be obtained. A similar argument may be used with regard to Class H materials.

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The insulation system provided must generally be suitable for unrestricted service under the environmental and service conditions listed in this specification for a minimum service life of 20 years. Mechanical and thermal stresses on the windings encountered during normal and fault conditions shall not lead to fracture, deformation or loosening of the windings. For this reason, vacuum-pressure impregnated (VPI) insulation systems using solvent-free (temperature cured) epoxy resins and submersion of the entire stator assembly is preferred. Field repairs to these insulation systems must be possible. At least 2 winding temperature detectors shall be provided per phase. RTDs should be embedded in the slot portion of the stator windings between coil sides. Additionally thermocouples can be fitted in the end winding portion of the stator winding. Windings shall be supported to ensure sufficient rigidity during normal conditions including direct on line starting. Insulated windings shall be non-hygroscopic and resistant to contamination and flame propagation. Stator windings shall be connected in star unless shown otherwise on the data sheet. Star points shall be formed internally but shall be disconnectable and accessible for measurements. The insulation level of machines that are required to operate on unearthed or on resistor earthed neutral systems with one line at earth potential for prolonged periods shall be highlighted by the manufacturer for specific approval be the purchaser. Details shall be provided of the Quality Assurance Specification that stator coils shall be manufactured and tested in accordance with section 7.2. Such a specification should be the method by which the insulation system is qualified. It should contain details of type tests and routine tests, and should demonstrate coil dielectric loss analysis and surge withstand capability. IEC 60034-15 contains details on impulse voltage withstand levels. A suitable Quality Assurance Specification is Electricity Association ‘Technical Specification 44-5, Testing the insulation system of stator coils for rotating electrical machines’. Conductors shall not be random but shall be layered or sectionalised (form wound) to ensure that the maximum design interturn voltage cannot be exceeded. The insulation system and the rotating diodes of the exciter/field circuit and the associated protective components shall be dimensioned such that a failure due to overload or loss of blocking/insulation capability is remote. The loss of a diode shall be detected by the monitoring system. Motor terminations shall preferably be of the separable insulated connector type in an enclosure with ingress protection IP21 minimum for mechanical protection, and an adequate method of supporting the cables. Alternatively, terminal boxes shall be of the pattern specified on the data sheet. The main terminal boxes of the motor shall be sealed towards the motor interior and shall have ample room to terminate the feeder cables. Terminal boxes shall have rupture-diaphragms or equivalent means for the safe relief of ionised gases towards the motor enclosure in case of a terminal short-circuit. The exciter shall have its own terminal box with provision for terminating the low-voltage supply cables. Motors, including the terminal box, windings and cable terminations, shall be entirely suitable for operation at the fault level specified in the data sheet when started and protected by the means also specified in the data sheet.

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Means shall be available for electrically isolating individual stator windings from each other and from the main incoming cables without involving extensive dismantling of the machine or risking damage to either the windings or the cables. Space shall be provided for the installation, at the manufacturers works, of current transformers to be supplied by the purchaser. Heater or other auxiliary connections shall be clearly identified and brought out to a dedicated terminal box separate from the main terminal box. Exposed auxiliary wiring on the motor shall be run in galvanised conduit, or with cables in such a way that they cannot be damaged accidentally. When a threaded entry is required for an auxiliary cable, as identified on the data sheet, a detachable plate or box incorporating a threaded entry shall be supplied. The minimum thickness of the material used for this purpose shall be 8 mm. Threaded entries shall be tapped ISO metric, with a constant pitch of 1.5 mm and to ‘medium fit’ tolerance Class 6H. The size of thread required shall be as specified on the data sheet. 5.5.

Bearings and lubrication

5.5.1.

General

All motors shall be capable of operating continuously when uncoupled from the driven equipment. It is a common practice during commissioning and also during operational 'trouble shooting' to run motors disconnected from the driven machinery. All motors operated by BP should incorporate this facility and no special arrangements should be necessary in order to accomplish this. Sleeve bearings fitted to machines rated 2000 kW and above shall be equipped with resistance temperature detectors. It is common practice to provide temperature-sensing systems for complete drive 'packages' (i.e. driver and driven machinery). The provision of the overall system may not be by the motor vendor but he should provide the facilities for accommodating such a system. Provision of a complete temperature monitoring and protection system is outside the scope of this GIS but may be the subject of a related GIS. Vertical motor thrust bearings shall be equipped with resistance temperature detectors. 5.5.2.

Rolling element bearings

Rolling element bearings are preferred if an acceptable bearing life can be achieved. The life of rolling element bearings calculated in accordance with ISO 281 shall be in excess of 40000 hours when considering the forces generated by the motor alone, and in excess of 32000 hours when considering the additional forces generated by the driven equipment. Rolling element bearings shall be in metric sizes and comply with ISO 492 recommended dimensions. It shall be possible to relubricate rolling element bearings safely without stopping or dismantling the motor. The relubrication interval shall be specified by the vendor. Relubrication intervals should not incur an unreasonable maintenance burden. A minimum of 4000 hours for horizontal or 3000 hours for vertical motors is reasonable. Grease lubricated bearing regreasing facilities shall be arranged such that a maximum amount of old grease is displaced and ejected to the outside of the motor enclosure. The bearing shall be packed with grease before the motor is despatched.

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5.5.3.


Sleeve bearings

Motors with sleeve bearings shall be provided with means to measure the air gap between stator and rotor at both ends, or any alternative means to ensure concentricity between stator and rotor. Motors with sleeve bearings shall be constructed to ensure an adequate supply of oil to all parts of the bearing surface under all conditions including rundown. This may be achieved with oil rings, discs or similar devices. Means shall be provided to prevent the escape of oil and oil level indicators shall be fitted. When a pressure fed or oil mist lubrication system is proposed by either the purchaser or vendor, full details shall be made available for consideration and acceptability. Motors without thrust or location bearings shall be defined as such and shown on the vendors documentation. The amount of permissible end float shall be stated to allow selection of a suitable coupling. The correct running position and limits of permissible movement of the rotor shall be permanently marked on the motor, and these markings shall be visible at all times. The motor rating plate shall be marked ‘Limited End Float’. All bearings shall be fully insulated to prevent the flow of shaft current unless type tests demonstrate that the shaft voltage measured at any operating conditions across the ends of the shaft is less than 150 mV rms. An earth connection, removable for test purposes shall be provided at the drive end bearing and no other connection shall bridge the insulation. 5.6.

Critical speeds The manufacturer shall state the design value of the first critical speed on the data sheet. The critical speeds of the rotor shall not be within 20% of the normal operating speed, twice normal operating speed, and any other significant exciting frequencies. Due to manufacturing tolerances there can be significant differences between the predicted and actual values of critical speed. The 20% tolerance on the design figure is used to provide an adequate safety margin. Critical speeds that lie below the operating speed shall be determined by run up and coast down of the machine during works test. For all flexible rotor machines a rotor dynamic analysis shall be undertaken by the manufacturer and the results submitted to the purchaser. The analysis shall include evaluation of the damped critical speeds allowing for bearing oil film together with housing, end shield and bedplate stiffness effects.

5.7.

Vibration Two-pole motors rated 1500 kW and above shall be fitted with dual non-contacting vibration probes at each bearing in accordance with API 670. In a manner similar to temperature monitoring either a complete ' package' vibration monitoring system may be required or a motor system alone may be required and will be separately specified. In either event motors shall be capable of accepting the necessary probes, either at the time of supply or later. Four-pole motors rated 3000 kW and above shall be fitted with vibration monitoring devices at each bearing. Non-contacting vibration probes, in accordance with API 670, or accelerometers (rms velocity reading), in accordance with API 670, are acceptable. The limits of bearing housing vibration for motors not fitted with non contact vibration monitoring equipment shall meet the requirements of IEC 60034-14, Table 1, Vibration grade R. The vibration amplitude of motors fitted with non contact vibration monitoring equipment shall meet the requirements of IEC 60034-14, Table 2, Vibration grade R.

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If vibration probes are fitted to the motor and if the complete vibration monitoring system can be made available at the manufacturers works during works test then these shall be employed for vibration testing. It is not necessary that the motor manufacturer purchase the vibration monitoring system, it is acceptable that it be borrowed from others (e.g. the 'package' vendor). The vibration levels for machines fitted with flexible rotors when passing through the first critical speed shall be within the following limits:

5.8.

a.

Motors fitted with sleeve bearings shall have peak to peak amplitude less than 75% of the nominal bearing clearance.

b.

Motors fitted with rolling element bearings shall operate at less than three times the limits given in IEC 60034-14, Table 1, Vibration grade R.

Plant identification In addition to the motor rating plate, a separate motor plant equipment identification plate shall be attached to a non-removable part of the frame in a readily visible position. The plate shall be fabricated from stainless steel and the means by which it is attached to the frame shall allow for the plate to be removed and replaced by a similar plate. The identification plate shall be engraved with the Plant Tag Number and the Works Identification Number (WIN) if made known to the manufacturer before despatch.

5.9.

Mechanical handling Facilities shall be provided for the application of jacking screws in all three planes, and their location shall be identified on the motor general arrangement drawing. Where it is intended to use spreader bars for lifting all or part of the machine, or where other special handling precautions are necessary, these requirements shall be identified on a suitable plate attached to the external surface of the motor.

5.10.

Painting Details of the manufacturers standard paint (or other type of finish) specification shall be submitted to the purchaser at the time of tender.

6. 6.1.

Noise Noise emission The manufacturer shall provide details of the noise emission from his equipment in octave bands. He shall also provide details of any narrow band noise emitted by his equipment that is noticeable to the ear, together with the octave band or bands in which it occurs.

6.2.

Noise reduction Where the noise-limiting requirements of this document cannot be met without the provision of noise-reducing features, the levels with and without these features shall be stated in any proposal.

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7. 7.1.


Tests Standard tests The following tests shall be undertaken irrespective of motor rating: (a) 'Complete' tests in accordance with the list in Table 1 for the first motor of each new design. The manufacturer may substitute validated test certificates in-lieu of carrying out the tests marked with an asterisk (*). (b) 'Abbreviated' tests in accordance with the list in Table 2 on all motors not subject to 'complete' tests. (c) For motors with flexible rotors any critical speed which lies below the operating speed range of the motor shall be determined by means of a run up and coast down test. The tests included in the following tables are required to be carried out on all high voltage motors, although it is appreciated that, on occasion, manufacturers may have good reason for not being able to meet all requirements. In such a case the purchaser must be assured that adequate testing will be arranged so that the capability of a motor to meet the specified duty will be properly demonstrated. Table 1 - Complete Tests 1 2 3 4 5 6 *

7

* * * *

8 9 10 11 12 13 14

Dielectric tests on completion of manufacture Measurement of winding resistance (cold) Measurement of no-load characteristic Direction of rotation with phase sequence Measurement of short-circuit characteristic Measurements of losses to allow calculation of efficiency at 1, 0.75 & 0.5 pu load Determination of temperature rise at full load (using the zero power factor method) Momentary overload Measurement of noise Dielectric tests after heat run Measurement of reactances and time-constants Measurement of vibration during all running tests Final dielectric tests High voltage and continuity tests on built-in temperature detectors to demonstrate satisfactory operation and compliance with stated characteristics

15 Determination of winding Polarisation Index 16 Rotor overspeed test The manufacturer may substitute validated test certificates in-lieu of carrying out the tests marked with an asterisk (*).

Table 2 – Abbreviated Tests 1 2 3 4

5 6 7

Dielectric tests on completion of manufacture Measurement of winding resistance (cold) Measurement of no-load characteristic Direction of rotation with phase sequence Measurement of vibration during all running tests Final dielectric tests High voltage and insulation tests on built-in temperature detectors Determination of winding Polarisation Index Rotor overspeed test

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7.2.


Overspeed test An overspeed test, in accordance with the requirements of section 8.6 of IEC 60034-1, shall be undertaken for all synchronous motors. The rotor shall be check balanced after the overspeed test. If the residual out of balance has increased by more than 10% then the rotor shall be rebalanced and the overspeed test and check balance repeated until the rotor is stable and meets the requirements of ISO 1940-1.

7.3.

Heat run Heat run (temperature rise) tests shall be conducted with the machine operating at rated voltage, load and speed.

7.4.

Vibration Vibration measurement tests shall be conducted with the machine operating at rated voltage and speed and mounted in a manner that is reasonably representative of site mounting conditions.

8. 8.1.

Documentation Data sheet The data sheet items indicated by a grey background need not be completed at the time of enquiry/tender. All items on the data sheet shall be completed at the time of order.

8.2.

Coil quality and interturn tests The manufacturer shall forward copies of test certificates, covering coil quality assurance procedures and coil interturn tests, to the purchaser at appropriate stages of tender and manufacture.

8.3.

Winding data Subsequent to the order, and prior to despatch from the manufacturer's works, the manufacturer shall forward full winding details to the purchaser.

8.4.

Test documentation This shall be provided to demonstrate compliance with clause 7.1.

8.5.

General arrangement drawing The manufacturer shall include with his tender a general arrangement drawing of the machine, on which the following information shall be included as a minimum: Overall dimensions Mounting dimensions Shaft dimensions Lifting arrangement Jacking points Weight (net and gross) Minimum clearance dimensions for maintenance Bearing type Cable entry position.

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Bibliography [1]

ESI Standard 44-5, Testing insulation systems of stator coils.

[2]

EN 50209 Test of insulation of bars and coils of high-voltage machines.

[3]

IEC 60034-8 Rotating electrical machines – Part 8: Terminal markings and direction of rotation.

[4]

IEC 60034-15 Rotating electrical machines – Part 15: Impulse voltage withstand levels of rotating AC machines with form-wound stator coils.

[5]

IEC 60034-18 Rotating electrical machines – Part 18: Functional evaluation of insulation systems.

[6]

IEC 60060-2 High-voltage test techniques – Part 2: Measuring systems.

[7]

IEC 60072-1 Dimensions and output series for rotating electrical machines – Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1 080.

[8]

IEC 60072-2 Dimensions and output series for rotation electrical machines – Part 2: Frame numbers 355 to 1 000 and flange numbers 1 180 to 2 360.

[9]

IEC 60079-1 Electrical apparatus for explosive gas atmospheres – Part 1: Flameproof enclosures “d”.

[10]

IEC 60079-2 Electrical apparatus for explosive gas atmospheres – Part 2: Pressurized enclosures “P”.

[11]

IEC 60079-7 Electrical apparatus for explosive gas atmospheres – Part 7: Increased safety “e”.

[12]

IEC 60079-10 Electrical apparatus for explosive gas atmospheres – Part 10: Classification of hazardous areas.

[13]

IEC 60079-15 Electrical apparatus for explosive gas atmospheres – Part 15: Type of protection “n”.

[14]

IEC 60212 Standard conditions for use prior to and during the testing of solid electrical insulation materials.

[15]

IEC 60317 Specifications for particular types of winding wires.

[16]

IEC 60529 Degrees of protection provided by enclosures (IP code).

[17]

IEC 60721-2-1 Classification of environmental conditions – Part 2-1: Environmental conditions appearing in nature – Temperature and humidity.

[18]

IEC 60751 Industrial platinum resistance thermometer sensors.

[19]

IEC 60851 Winding Wires – Test Methods.

[20]

IEC 60894 Guide for a test procedure for the measurement of loss tangent of coils and bars for machine windings.

[21]

IEC 61000-4-5 Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement techniques – Surge immunity test.

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[22]

ISO 1680-2 Acoustics – Test code for the measurement of airborne noise emitted by rotating electrical machinery – Part 2: Survey method.

[23]

NEMA MG1 Motors and Generators.

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GIS 12-205-Synchronous Motors (IEC)

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