IEC TS 60034-27-5:2021 provides an off-line measurement method of the partial discharge inception and extinction voltage on winding insulation under repetitive impulse voltage. This document is relevant to rotating machines supplied by a voltage source converter.

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IEC TS 60034-34:2020 is applicable to AC adjustable speed rolling mill motors and identifies specific requirements for AC adjustable speed rolling mill motors, where those performance characteristics are different from those for conventional AC motors.
Various types of overload capacity conditions and overloads are defined. The possible effect on motor insulation life due to operating the motor beyond its design capability is discussed.
Requirements for confirmation of motor under specified variable speed operational conditions are introduced.

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IEC 60034-7:2020 specifies the IM Code, a classification of types of construction, mounting arrangements and the terminal box position of rotating electrical machines. Two systems of classification are provided as follows:
- Code I: An alpha-numeric designation applicable to machines with end-shield bearing(s) and only one shaft extension
- Code II: An all-numeric designation applicable to a wider range of types of machines including types covered by Code I.
This third edition cancels and replaces the second edition, published in 1992, and its Amendment 1:2000. The main technical changes with regard to the previous edition are as follows:
- note on twin motors added
- reference to 4.3 instead of duplication of text
- new subclause on marking of shaft inclination or declination.

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IEC 60034-11:2020 is available as IEC 60034-11:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-11:2020 specifies requirements relating to the use of thermal protectors and thermal detectors incorporated into the stator windings or placed in other suitable positions in induction machines in order to protect them against serious damage due to thermal overloads. It applies to single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034-1 and IEC 60034-12 that:
- have a rated voltage up to 1 000 V;
- are intended for direct-on-line or star-delta starting.
The main changes with respect to the previous edition are:
- the additional specification of winding temperature limits for temperature class 200 (N),
- the increased limits of maximum winding temperatures for overloads with rapid variation,
- the clarification that the motor winding may be permanently damaged after it has been exposed to temperatures
- a clarification of the definition of indirect thermal protection,
- a clarification on the test methods for larger motors.

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This part of IEC 60034 applies to the classification of degrees of protection provided by
enclosures for rotating electrical machines. It defines the requirements for protective enclosures
that are in all other respects suitable for their intended use and which, from the point of view of
materials and workmanship, ensure that the properties dealt with in this document are
maintained under normal conditions of use.
This document does not specify degrees of protection against mechanical damage of the
machine, or conditions such as moisture (produced for example by condensation), corrosive
dust and vapour, fungus or vermin.
This document is also applicable to explosion proof machines, but it does not specifiy the types
of protection for use in a potentially explosive (dust, gas) environment. Those are defined in the
IEC 60079 series of standards.
In certain applications (such as agricultural or domestic appliances), more extensive
precautions against accidental or deliberate contact may be specified.
This document gives definitions for standard degrees of protection provided by enclosures
applicable to rotating electrical machines as regards the:
a) protection of persons against contacts with or approach to live parts and against contact
with moving parts (other than smooth rotating shafts and the like) inside the enclosure and
protection of the machine against ingress of solid foreign objects;
b) protection of machines against the harmful effects due to ingress of water;
c) protection of machines against the harmful effects due to ingress of dust.
It gives designations for these protective degrees and tests to be performed to check that the
machines meet the requirements of this document.

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This part of IEC 60034 specifies test methods and an interpolation procedure for determining
losses and efficiencies of converter-fed motors within the scope of IEC 60034-1:2017. The
motor is then part of a variable frequency power drive system (PDS) as defined in
IEC 61800-9-2:2017.
Applying the approach of the comparable converter, the motor efficiency determined by use of
this document is applicable for comparison of different motor designs only.
The document also specifies procedures to determine motor losses at any load point (torque,
speed) within the base speed range (constant torque range, constant flux range) based on
determination of losses at seven standardized load points. This procedure is applicable to any
variable speed AC motor (induction and synchronous) rated according to IEC 60034-1:2017 for
operation on a variable frequency and variable voltage power supply.

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IEC 60034-3:2020 applies to large three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. Also included are synchronous Mvar compensators of the same output range connected to a grid for the purpose of exchanging reactive power. This document supplements basic requirements for rotating machines given in IEC 60034-1.
This seventh edition cancels and replaces the sixth edition published in 2007. This edition includes the following significant technical changes with respect to the previous edition:
- title modified;
- scope extended to synchronous compensators;
- rotor overcurrent requirements added;
- impact of stator harmonics on rotor unbalanced load capability introduced;
- synchronisation requirements added;
- adjustments of temperatures or temperature rise revised for gas turbine applications;
- requirements for auxiliaries updated.

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IEC 60034-5:2020 is available as IEC 60034-5:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60034-5:2020 applies to the classification of degrees of protection provided by enclosures for rotating electrical machines. It defines the requirements for protective enclosures that are in all other respects suitable for their intended use and which, from the point of view of materials and workmanship, ensure that the properties dealt with in this document are maintained under normal conditions of use. This document does not specify degrees of protection against mechanical damage of the machine, or conditions such as moisture (produced for example by condensation), corrosive dust and vapour, fungus or vermin.
This document is also applicable to explosion proof machines, but it does not specify the types of protection for use in a potentially explosive (dust, gas) environment. Those are defined in the IEC 60079 series of standards. This document gives definitions for standard degrees of protection provided by enclosures applicable to rotating electrical machines as regards the:
a. protection of persons against contacts with or approach to live parts and against contact with moving parts (other than smooth rotating shafts and the like) inside the enclosure and protection of the machine against ingress of solid foreign objects
b. protection of machines against the harmful effects due to ingress of water;
c. protection of machines against the harmful effects due to ingress of dust.
This fifth edition cancels and replaces the fourth edition, published in 2000, and its Amendment 1:2006.The main technical changes with respect to the previous edition are:
- the inclusion of an additional second numeral 9 including its test method,
- an additional note for clarification in Table 3,
- a clarification on the term open drain hole,
- a clarification on the ingress of dust in Table 4,
- pressure values given now in Pa only,
- a clarification in the scope on the applicability of this standard for (Ex) motors,
- a new Clause 3 with definitions,

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IEC 60034-2-3:2020 specifies test methods and an interpolation procedure for determining losses and efficiencies of converter-fed motors within the scope of IEC 60034-1:2017. The motor is then part of a variable frequency power drive system (PDS) as defined in IEC 61800‑9‑2:2017.
Applying the approach of the comparable converter, the motor efficiency determined by use of this document is applicable for comparison of different motor designs only.
The document also specifies procedures to determine motor losses at any load point (torque, speed) within the base speed range (constant torque range, constant flux range) based on determination of losses at seven standardized load points. This procedure is applicable to any variable speed AC motor (induction and synchronous) rated according to IEC 60034-1:2017 for operation on a variable frequency and variable voltage power supply.

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EN IEC 60034-18-41 defines criteria for assessing the insulation system of stator/rotor windings which are subjected to voltage-source pulse-width-modulation (PWM) drives. It applies to stator/rotor windings of single or polyphase AC machines with insulation systems for converter operation. It describes qualification tests and quality control (type and routine) tests on representative samples or on completed machines which verify fitness for operation with voltage source converters. This standard does not apply to: - rotating machines which are only started by converters; - rotating electrical machines with rated voltage ≤ 300 V r.m.s.; - rotor windings of rotating electrical machines operating at ≤ 200 V (peak).

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IEC SRD 62913-2-1 2019 (E) initiates and illustrates the IEC’s systems approach based on Use Cases and involving the identification of generic smart grid requirements for further standardization work for grid related domains – i.e. grid management regrouping: transmission grid management, distribution grid management, microgrids and smart substation automation domains – based on the methods and tools developed in IEC SRD 62913-1.
The Grid management domain groups Use Cases and associated requirements common to the EHV, HV and MV/LV networks operations and the business analysis of the general electric network life cycle. Use Cases specific to parts of the general electric network are described in transmission grid management, distribution grid management, microgrids and smart substation automation clauses.
This document captures possible “common and repeated usage” of a smart grid system, under the format of “Use Cases” with a view to feeding further standardization activities. Use Cases can be described in different ways and can represent competing alternatives. From there, this document derives the common requirements to be considered by these further standardization activities in term of interfaces between actors interacting with the given system.
To this end, Use Case implementations are given for information purposes only. The interface requirements to be considered for later standardization activities are summarized (typically information pieces, communication services and specific non-functional requirements: performance level, security specification, etc.).

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This part of IEC 60034 covers the procedures necessary to ensure the satisfactory repair, overhaul, and reclamation of all types and sizes of rotating electrical machines covered by the IEC 60034 series. The standard creates a generic industry procedure covering common aspects of a complete repair. The scope of work depends on the machine type, rating, condition, and the importance of plant reliability and safety. It includes - determining cause of failure, where necessary; - determining the extent of repair, as applicable; - defining revised performance, operating and ambient conditions, if required; - reviewing the original design, and upgrading the specification of the design, if required; - proving the quality and performance of the repaired machine, maintaining or improving the rated energy efficiency; - ensuring environmental considerations are taken into account. This document does not supersede the requirements prescribed in IEC 60079-19 or elsewhere concerning the repair and overhaul for machines used in explosive atmospheres. Machines for special applications such as hermetic, submersible, nuclear, hydrogen cooled machines, military, aviation and traction motors might have additional requirements, which are the subject of agreement between the service facility and user. This document is not intended to take the place of the original machine manufacturer’s instructions and recommendations. Re-designs and performance changes requiring machine designer input are beyond the scope of this document.

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This part of IEC 60034 covers the procedures necessary to ensure the satisfactory repair, overhaul, and reclamation of all types and sizes of rotating electrical machines covered by the IEC 60034 series. The standard creates a generic industry procedure covering common aspects of a complete repair. The scope of work depends on the machine type, rating, condition, and the importance of plant reliability and safety. It includes - determining cause of failure, where necessary; - determining the extent of repair, as applicable; - defining revised performance, operating and ambient conditions, if required; - reviewing the original design, and upgrading the specification of the design, if required; - proving the quality and performance of the repaired machine, maintaining or improving the rated energy efficiency; - ensuring environmental considerations are taken into account. This document does not supersede the requirements prescribed in IEC 60079-19 or elsewhere concerning the repair and overhaul for machines used in explosive atmospheres. Machines for special applications such as hermetic, submersible, nuclear, hydrogen cooled machines, military, aviation and traction motors might have additional requirements, which are the subject of agreement between the service facility and user. This document is not intended to take the place of the original machine manufacturer’s instructions and recommendations. Re-designs and performance changes requiring machine designer input are beyond the scope of this document.

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This part of IEC 60034 applies to three-phase synchronous machines of 1 kVA rating and
larger.
Most of the methods are intended to be used for machines having an excitation winding with
slip-rings and brushes for their supply. Synchronous machines with brushless excitation
require special effort for some of the tests. For machines with permanent magnet excitation,
there is a limited applicability of the described tests, and special precautions should be taken
against irreversible demagnetization.
Excluded are axial-field machines and special synchronous machines such as inductor type
machines, transversal flux machines and reluctance machines.
It is not intended that this document be interpreted as requiring any or all of the tests
described therein on any given machine. The particular tests to be carried out are subject to
agreement between manufacturer and customer.

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IEC 60034-23:2019 covers the procedures necessary to ensure the satisfactory repair, overhaul, and reclamation of all types and sizes of rotating electrical machines covered by IEC 60034.
This standard creates a generic industry procedure covering common aspects of a complete repair. The scope of work depends on the machine type, rating, condition, and the importance of plant reliability and safety. This standard does not supersede the requirements prescribed in IEC 60079-19 or elsewhere concerning the repair and overhaul for machines used in explosive atmospheres.
This first edition cancels and replaces IEC TS 60034-23 published in 2003. This edition includes the following significant technical changes with respect to the previous edition:
– the title of the standard has been changed to Rotating electrical machines – Part 23: Repair, overhaul and reclamation;
– general Principles added to cover: hazardous areas, traction motors, machine efficiency, environment, end of life recycling. and circular economy considerations;
– general: Scope of work, health and safety, standards, quality, information required and documentation now covered;
– final tests updated;
– additional requirements for the repair and testing of DC machines added;
– additional requirements for the repair and testing of High Voltage AC machines added;
– customer reports and handover added;
– new standard tolerances added.

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This part of IEC 60034 specifies the factory acceptance vibration test procedures and
vibration limits for certain electrical machines under specified conditions, when uncoupled
from any load or prime mover.
It is applicable to DC and three-phase AC machines, with shaft heights 56 mm and higher and
a rated output up to 50 MW, at operational speeds from 120 min–1 up to and including
15 000 min–1.
This document is not applicable to machines mounted in situ (on site), three-phase
commutator motors, single-phase machines, three-phase machines operated on single-phase
systems, vertical waterpower generators, turbine generators greater than 20 MW and
machines with magnetic bearings or series-wound machines.
NOTE For machines measured in situ, refer to applicable parts of ISO 20816, ISO 10816 and ISO 7919.

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This part of IEC 60034 is applicable to all rotating electrical machines except those covered
by other IEC standards, for example, IEC 60349.
Machines within the scope of this document may also be subject to superseding, modifying or
additional requirements in other standards, for example, IEC 60079 and IEC 60092.
NOTE If particular clauses of this document are modified to meet special applications, for example machines
subject to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible.

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This part of IEC 60034 provides recommended test procedures for the measurement of
insulation resistance and polarization index of stator and rotor winding insulation of
rotating electrical machines.
This document recommends minimum acceptable values of insulation resistance and
polarization index of winding insulation valid for fully processed low and high voltage AC and
DC rotating electrical machines with a rated power of 750 W or higher.

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This part of IEC 60034 provides a common basis for:
– measuring techniques and instruments;
– the arrangement of test circuits;
– normalization and testing procedures;
– noise reduction;
– the documentation of test results;
– the interpretation of test results,
with respect to partial discharge off-line measurements on the winding insulation of rotating
electrical machines.
The measurement methods described in this document are applicable to stator windings of
machines with or without conductive slot coating and to the stator windings of machines made
with form wound or random wound windings. In special cases like high voltage rotor field
windings, this document is applicable as well. The measurement methods are applicable when
testing with alternating sinusoidal voltages from 0,1 Hz up to 400 Hz.
Interpretation guidelines are given in this document and are applicable only if all the following
requirements are fulfilled:
– Measurements performed with power frequency of 50 Hz or 60 Hz, or when testing with
power supply within a frequency range of 45 Hz to 65 Hz.
– Form wound windings and winding components such as bars and coils.
– Winding with conductive slot coating. This is usually valid for machines with voltage rating
of 6 kV and higher.
For machines with random wound windings, form-wound windings without conductive slot
coating, and testing at frequencies differing from power frequencies, the interpretation
guidelines are not applicable. The testing procedures for off-line PD-measurements of this
document can be used for assessing the uniform quality of manufacturing or/and the trending
of these kind of windings as well as converter driven machine windings.
NOTE Testing of low voltage machines with so called Type I insulation systems is defined in reference [10]1.
Testing procedures for qualification of converter driven high voltage machines with so called Type II insulation
systems are dealt with in IEC 60034-18-42 (in addition to the optional electric tests described therein).

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IEC 60034-14:2018 is now available as IEC 60034-14:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60034-14:2018 specifies the factory acceptance vibration test procedures and vibration limits for certain electrical machines under specified conditions, when uncoupled from any load or prime mover. It is applicable to DC and three-phase AC machines, with shaft heights 56 mm and higher and a rated output up to 50 MW, at operational speeds from 120 min–1 up to and including 15 000 min–1. This new edition includes the following significant technical changes with respect to the previous edition:
- Improved explanation of the definition “free suspension”.
- Addition of an alternative method of rigid mount
- Definition of an improved option for shaft key.

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This part of IEC 60034 provides recommended test procedures for the measurement of insulation resistance and polarization index of stator and rotor winding insulation of rotating electrical machines. This document recommends minimum acceptable values of insulation resistance and polarization index of winding insulation valid for fully processed low and high voltage AC and DC rotating electrical machines with a rated power of 750 W or higher.

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This part of IEC 60034 provides a common basis for: - measuring techniques and instruments; - the arrangement of test circuits; - normalization and testing procedures; - noise reduction; - the documentation of test results; - the interpretation of test results, with respect to partial discharge off-line measurements on the winding insulation of rotating electrical machines. The measurement methods described in this document are applicable to stator windings of machines with or without conductive slot coating and to the stator windings of machines made with form wound or random wound windings. In special cases like high voltage rotor field windings, this document is applicable as well. The measurement methods are applicable when testing with alternating sinusoidal voltages from 0,1 Hz up to 400 Hz. Interpretation guidelines are given in this document and are applicable only if all the following requirements are fulfilled: - Measurements performed with power frequency of 50 Hz or 60 Hz, or when testing with power supply within a frequency range of 45 Hz to 65 Hz. - Form wound windings and winding components such as bars and coils. - Winding with conductive slot coating. This is usually valid for machines with voltage rating of 6 kV and higher. For machines with random wound windings, form-wound windings without conductive slot coating, and testing at frequencies differing from power frequencies, the interpretation guidelines are not applicable. The testing procedures for off-line PD-measurements of this document can be used for assessing the uniform quality of manufacturing or/and the trending of these kind of windings as well as converter driven machine windings. NOTE Testing of low voltage machines with so called Type I insulation systems is defined in reference [10]1. Testing procedures for qualification of converter driven high voltage machines with so called Type II insulation systems are dealt with in IEC 60034-18-42 (in addition to the optional electric tests described therein).

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IEC 60276:2018 applies to carbon brushes for electrical machinery. This edition applies only to carbon brushes for commutators and slip-rings in rotating machines. Terms and definitions are relative to the brush construction (references 100’s to 500’s and parts of 900’s) and to the markings when operating on a rotating machine (references 600’s to 800’s).
This new edition includes the following significant technical changes with respect to the previous edition:
Some nomenclature has been deleted or added, whereas remaining definitions have been detailed and clarified, to reflect the technical evolution since 1987.
Additional definitions have been included to address the request for reviewing this standard, in particular nomenclature of commutator/slip-rings markings, brush markings and commutation sparks codes.

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IEC 60034-4-1:2018 applies to three-phase synchronous machines of 1 kVA rating and larger and describes methods intended to be used for machines having an excitation winding with slip-rings and brushes for their supply. Synchronous machines with brushless excitation require special effort for some of the tests. For machines with permanent magnet excitation, there is a limited applicability of the described tests, and special precautions should be taken against irreversible demagnetization.

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IEC 60034-27-4:2018 provides recommended test procedures for the measurement of insulation resistance and polarization index of stator and rotor winding insulation of rotating electrical machines. This document recommends minimum acceptable values of insulation resistance and polarization index of winding insulation valid for fully processed low and high voltage AC and DC rotating electrical machines with a rated power of 750 W or higher.

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IEC/TS 60034-18-42:2008 defines criteria for assessing the insulation system of stator/rotor windings of single or polyphase AC machines which are subjected to repetitive impulse voltages, such as pulse width modulation converters, and expected to withstand partial discharge activity during service. It specifies electrical qualification and acceptance tests on representative samples which verify fitness for operation with voltage-source converters.

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IEC 60034-27-1:2017 provides a common basis for:
- measuring techniques and instruments;
- the arrangement of test circuits;
- normalization and testing procedures;
- noise reduction;
- the documentation of test results;
- the interpretation of test results,
with respect to partial discharge off-line measurements on the winding insulation of rotating electrical machines.
This International Standard cancels and replaces IEC TS 60034-27 (2006). It constitutes a technical revision and reflects numerous improvements and corrections with respect to the previous publication.

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IEC 60077-1:2017 is now available as IEC 60077-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60077-1:2017 specifies the general service conditions and requirements for all electric equipment installed in power circuits, auxiliary circuits, control and indicating circuits etc., on railway rolling stock. The purpose of this document is to harmonize as far as practicable all rules and requirements of a general nature applicable to electric equipment for rolling stock. This new edition includes the following main technical changes with regard to the previous edition:
- descriptions regarding insulation coordination, environmental conditions and those of current return and protective bonding are deleted and replaced by references to IEC 62497‑1, IEC 62498-1 and IEC 61991;
- classification of equipment type is introduced;
- temperature limits and temperature rise tests are reviewed.

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IEC/TS 60034-18-42:2008 defines criteria for assessing the insulation system of stator/rotor windings of single or polyphase AC machines which are subjected to repetitive impulse voltages, such as pulse width modulation converters, and expected to withstand partial discharge activity during service. It specifies electrical qualification and acceptance tests on representative samples which verify fitness for operation with voltage-source converters.

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IEC 60034-1:2017 is now available as IEC 60034-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60034-1:2017 is applicable to all rotating electrical machines except those covered by other IEC standards, for example, IEC 60349. Machines within the scope of this document may also be subject to superseding, modifying or additional requirements in other standards, for example, IEC 60079 and IEC 60092. This new edition contains a number of clarifications, corrections and enhancements with regard to the previous edition.

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IEC 60034-18-42:2017 defines criteria for assessing the insulation system of stator/rotor windings of single or polyphase AC machines which are subjected to repetitive impulse voltages, such as those generated by pulse width modulation (PWM) converters, and are expected to experience and withstand partial discharge activity during service. It specifies electrical qualification tests on representative specimens to verify fitness for operation with voltage-source converters. It also describes an additional classification system which defines the limits of reliable performance under converter-fed conditions.

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IEC TS 60034-32:2016(E) is intended to provide consistent guidelines for measuring and reporting end-winding vibration behaviour during operation and at standstill. It
- defines terms for measuring, analysis and evaluation of stator end-winding vibration and related structural dynamics;
- gives guidelines for measuring dynamic / structural characteristics offline and stator end-winding vibrations online;
- describes instrumentation and installation practices for end-winding vibration measurement equipment;
- establishes general principles for documentation of test results;
- describes the theoretical background of stator end-winding vibrations. This part of IEC 60034 is applicable to three-phase synchronous generators and three-phase synchronous direct online (DOL) motors.

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IEC TS 60034-30-2:2016(E) specifies efficiency classes for variable speed rotating electric machines not covered in IEC 60034-30-1. The classification only covers machines designed for operation with sinusoidal fundamental current that are not designed to be operated direct on-line (grid), for example permanent magnet synchronous machines with and without additional reluctance torque, sinusoidal reluctance synchronous machines and synchronous machines with DC field windings.

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IEC 60034-12:2016 is now available as IEC 60034-12:2016 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60034-12:2016 specifies the parameters for eight designs of starting performance of single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034-1 that:
- have a rated voltage up to 1 000 V;
- are intended for direct-on-line or star-delta starting;
- are rated on the basis of duty type S1;
- are constructed to any degree of protection and explosion protection. The main changes with respect to the previous edition are as follows:
- new design letter E for extended efficiency motors, explanation of all design letters, and description of new designs NE, NEY, HE, and HEY;
- addition of a reference to IEC 60079-7;
- addition of a formula to calculate locked rotor current from apparent power.

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This part of IEC 60034 provides guidelines for the test procedures and the interpretation of
test results for dielectric dissipation factor measurements on the stator winding insulation of
rotating electrical machines. These guidelines are valid for rotating electrical machines with
conductive slot coatings operating at a rated voltage of 6 kV and higher.
This standard applies to individual form-wound stator bars and coils outside a core (uninstalled),
individual stator bars and coils installed in a core and complete form-wound stator
winding of machines in new or aged condition.
This International Standard applies to all kind of vacuum impregnated or resin-rich (fullyloaded)
taped bars, coils and complete windings. It is not applicable to non-impregnated individual
bars and coils or non-impregnated complete windings.
Requirements for the dielectric dissipation factor characteristics of individual form-wound stator
bars and coils of machines with rating voltages from 6 kV and higher when tested with
50 Hz or 60 Hz alternating voltages are given.

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IEC TR 63021:2016(E) presents technical characteristics, application results and practical information on NG-brush for slip-ring obtained through the application of NG-brush in various kinds of wound rotor-type induction motor (large-size water pump, belt conveyer, lift, winder motor, grinding mill and crusher in coal or ore mine; crane, rolling mill, compressor and winder motor for boring in oil or gas facility).

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IEC 60034-27-3:2015 provides guidelines for the test procedures and the interpretation of test results for dielectric dissipation factor measurements on the stator winding insulation of rotating electrical machines. These guidelines are valid for rotating electrical machines with conductive slot coatings operating at a rated voltage of 6 kV and higher. This standard applies to individual form-wound stator bars and coils outside a core (uninstalled), individual stator bars and coils installed in a core and complete form-wound stator winding of machines in new or aged condition. This edition includes the following significant technical changes with respect to the previous publication IEC TR 60894:1987:
- inclusion of digital measurement of dissipation factor and capacitance;
- inclusion of limits for dissipation factor values;
- detailed description of measuring techniques; extension of scope to complete windings.

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This part of IEC 60034 applies to d.c. machines rated 1 kW and above operating on rectifierfed
power supplies, d.c. buses or other d.c. sources.
Standardized methods are provided for determining characteristic quantities for conventional
and rectifier-fed d.c. machines.
Excluded are d.c machines for specific applications.
These methods supplement the requirements in IEC 60034-1 and IEC 60034-2-1.
NOTE It is not intended that this standard should be interpreted as requiring the carrying out of any or all of the
tests described therein on any given machine.

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IEC 60601-1-11:2015 is available as IEC 60601-1-11:2015 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60601-1-11:2015 applies to the basic safety and essential performance of medical electrical equipment and medical electrical systems for use in the home healthcare environment. It applies regardless of whether the medical electrical equipment or medical electrical system is intended for use by a lay operator or by trained healthcare personnel. The home healthcare environment includes:
- the dwelling place in which a patient lives;
- other places where patients are present both indoors and outdoors, excluding professional healthcare facility environments where operators with medical training are continually available when patients are present.
This second edition cancels and replaces the first edition of IEC 60601-1-11, published in 2010, and constitutes a technical revision. The most significant changes with respect to the previous edition include the following modifications:
- correction of test method for relative humidity control at temperatures above 35 °C;
- redrafting of subclauses that altered instead of adding to the general standard or other collateral standards; and
- harmonizing with the changes to the amendments to the general standard and other collateral standards.

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This part of IEC 60034 is intended to establish methods of determining efficiencies from tests,
and also to specify methods of obtaining specific losses.
This standard applies to d.c. machines and to a.c. synchronous and induction machines of all
sizes within the scope of IEC 60034-1.

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IEC TS 60034-25:2014 describes the performance characteristics of a.c. electrical machines for use on converter supplies. For electrical machines specifically designed for converter duty application design features are defined. It also specifies the interface parameters and interactions between the electrical machine and the converter including installation guidance as part of a power drive system, but except for the voltage at the power interface which is described in IEC 61800-8. The main technical changes with regard to the previous edition are as follows:
- merging of IEC TS 60034-17 into IEC TS 60034-25 adding a clause which now includes all specific requirements for standard non-definite purpose electric machines;
- removal of Annex C: Noise increments due to converter supply.

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IEC 60034-19:2014 applies to d.c. machines rated 1 kW and above operating on rectifier-fed power supplies, d.c. buses or other d.c. sources and provides standardized methods intended to determine characteristic quantities for conventional and rectifier-fed d.c. machines. These methods supplement the requirements in IEC 60034-1 and IEC 60034-2-1. The main changes with regard to the previous edition are as follows:
- description of the procedure for black band testing has been detailed and clarified;
- procedures for measurement of the magnetization curves under no-load and load conditions have been added.

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EN IEC 60034-18-41 defines criteria for assessing the insulation system of stator/rotor windings which are subjected to voltage-source pulse-width-modulation (PWM) drives. It applies to stator/rotor windings of single or polyphase AC machines with insulation systems for converter operation. It describes qualification tests and quality control (type and routine) tests on representative samples or on completed machines which verify fitness for operation with voltage source converters. This standard does not apply to: - rotating machines which are only started by converters; - rotating electrical machines with rated voltage ≤ 300 V r.m.s.; - rotor windings of rotating electrical machines operating at ≤ 200 V (peak).

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