2020-05-07: When amdt is published, add supersession link between PR=65214 and PR=21445

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2020-05-07: When amdt is published, add supersession link between PR=64419 and PR=21139

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This part of IEC 61400 specifies procedures for validation of electrical simulation models for
wind turbines and wind power plants, intended to be used in power system and grid stability
analyses. The validation procedures are based on the tests specified in IEC 61400-21 (all
parts). The validation procedures are applicable to the generic models specified in
IEC 61400-27-1 and to other fundamental frequency wind power plant models and wind
turbine models.
The validation procedures for wind...
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    • Standard
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This part of IEC 61400 defines standard electrical simulation models for wind turbines and wind
power plants. The specified models are time domain positive sequence simulation models,
intended to be used in power system and grid stability analyses. The models are applicable for
dynamic simulations of short term stability in power systems.
This document defines the generic terms and parameters for the electrical simulation models.
This document specifies electrical simulation models for the ...
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This part of IEC 61400 specifies requirements to ensure the engineering integrity of wind
turbine blades as well as an appropriate level of operational safety throughout the design
lifetime. It includes requirements for:
• aerodynamic and structural design,
• material selection, evaluation and testing,
• manufacture (including associated quality management),
• transportation, installation, operation and maintenance of the blades.
The purpose of this document is to provide a technical refe...
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The purpose of this this part of IEC 63132 is to establish, in a general way, suitable
procedures and tolerances for the installation of a vertical Kaplan or propeller turbine. This
document presents a typical assembly and whenever the word “turbine” is used in this
document, it refers to a vertical Kaplan or propeller turbine. There are many possible ways to
assemble a unit. The size of the machine, design of the machine, layout of the powerhouse or
delivery schedule of the components are ...
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The purpose of this this part of IEC 63132 is to establish, in a general way, suitable procedures
and tolerances for the installation of a vertical Francis turbine or pump-turbine. This document
presents a typical assembly and whenever the word “turbine” is used in this document, it refers
to a vertical Francis turbine or a pump-turbine. There are many possible ways to assemble a
unit. The size of the machine, design of the machine, layout of the powerhouse or delivery
schedule of the compo...
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This part of IEC 61400 specifies requirements and general principles to be used in assessing
the structural integrity of onshore wind turbine support structures (including foundations). The
scope includes the geotechnical assessment of the soil for generic or site specific purposes.
The strength of any flange and connection system connected to the rotor nacelle assembly
(including connection to the yaw bearing) are designed and documented according to this
document or according to IEC 61400...
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The purpose of this part of IEC 63132 is to establish, in a general way, suitable procedures and
tolerances for installation of generator. This document presents a typical assembly. There are
many possible ways to assemble a unit. The size of the machines, design of the machines,
layout of the powerhouse or delivery schedule of the components are some of the elements that
could result in additional steps, the elimination of some steps and/or assembly sequences.
It is understood that a publi...
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The purpose of this part of IEC 63132 is to establish, in a general way, suitable procedures and
tolerances for the installation of hydroelectric turbines and generators. This document presents
a typical assembly. There are many possible ways to assemble a unit. The size of the machines,
design of the machines, layout of the powerhouse and delivery schedule of the components are
some of the elements that could result in additional steps, the elimination of some steps and/or
assembly sequenc...
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2020-03-23: corrigendum created to confirm EN 61400-22:2011 and is not the result of a mistake (see BT decision D165/C016)

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This document presents measurement procedures that enable noise emissions of a wind turbine to be characterised. This involves using measurement methods appropriate to noise emission assessment at locations close to the machine, in order to avoid errors due to sound propagation, but far away enough to allow for the finite source size. The procedures described are different in some respects from those that would be adopted for noise assessment in community noise studies. They are intended to faci...view more

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This part of IEC 61400 deals with safety philosophy, quality assurance, and engineering
integrity and specifies requirements for the safety of small wind turbines (SWTs) including
design, installation, maintenance and operation under specified external conditions. Its
purpose is to provide the appropriate level of protection against damage from hazards from
these systems during their planned lifetime.
This standard is concerned with all subsystems of SWTs such as protection mechanisms,
int...
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This part of IEC 61400 specifies essential design requirements to ensure the structural
integrity of wind turbines. Its purpose is to provide an appropriate level of protection against
damage from all hazards during the planned lifetime.
This document is concerned with all subsystems of wind turbines such as control and
protection functions, internal electrical systems, mechanical systems and support structures.
This document applies to wind turbines of all sizes. For small wind turbines, I...
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This document specifies additional requirements for assessment of the external conditions at an offshore wind turbine site and specifies essential design requirements to ensure the engineering integrity of fixed offshore wind turbines. Its purpose is to provide an appropriate level of protection against damage from all hazards during the planned lifetime. This document focuses on the engineering integrity of the structural components of an offshore wind turbine but is also concerned with subsyst...view more

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This Standard  applies to lightning protection of wind turbine generators and wind power systems. Refer to Annex M guidelines for small wind turbines. This document defines the lightning environment for wind turbines and risk assessment for wind turbines in that environment. It defines requirements for protection of blades, other structural components and electrical and control systems against both direct and indirect effects of lightning. Test methods to validate compliance are included. Guidan...view more

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This part of IEC 61400 includes:
• definition and specification of the quantities to be determined for characterizing the
electrical characteristics of a grid-connected wind turbine;
• measurement procedures for quantifying the electrical characteristics;
• procedures for assessing compliance with electrical connection requirements, including
estimation of the power quality expected from the wind turbine type when deployed at a
specific site.
The measurement procedures are valid for singl...
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This part of IEC 61400 defines an information model from which time-based, and productionbased
availability indicators for services can be derived and reported.
The purpose is to provide standardised metrics that can be used to create and organise
methods for availability calculation and reporting according to the user’s needs.
The document provides information categories, which unambiguously describe how data is
used to characterise and categorise the operation. The information model speci...
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This document applies to laboratory models of any type of impulse or reaction hydraulic turbine,
storage pump or pump-turbine.
This document applies to models of prototype machines either with unit power greater than
5 MW or with reference diameter greater than 3 m. Full application of the procedures herein
prescribed is not generally justified for machines with smaller power and size. Nevertheless,
this document may be used for such machines by agreement between the purchaser and the
supp...
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This International Standard establishes the prototype hydraulic machine efficiency from model
test results, with consideration of scale effect including the effect of surface roughness.
This document is intended to be used for the assessment of the results of contractual model
tests of hydraulic machines.

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    • Standard
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This part of IEC 61400 specifies essential design requirements to ensure the structural
integrity of wind turbines. Its purpose is to provide an appropriate level of protection against
damage from all hazards during the planned lifetime.
This document is concerned with all subsystems of wind turbines such as control and
protection functions, internal electrical systems, mechanical systems and support structures.
This document applies to wind turbines of all sizes. For small wind turbines, I...
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This document gives guidelines for:
a) presenting data on hydro-abrasive erosion rates on several combinations of water quality, operating conditions, component materials, and component properties collected from a variety of hydro sites;
b) developing guidelines for the methods of minimizing hydro-abrasive erosion by modifications to hydraulic design for clean water. These guidelines do not include details such as hydraulic profile shapes which are determined by the hydraulic design experts fo...
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This document presents measurement procedures that enable noise emissions of a wind turbine to be characterised. This involves using measurement methods appropriate to noise emission assessment at locations close to the machine, in order to avoid errors due to sound propagation, but far away enough to allow for the finite source size. The procedures described are different in some respects from those that would be adopted for noise assessment in community noise studies. They are intended to faci...view more

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This part of IEC 61400-25 specifies standard techniques for testing of compliance of
implementations, as well as specific measurement techniques to be applied when declaring
performance parameters. The use of these techniques will enhance the ability of users to
purchase systems that integrate easily, operate correctly, and support the applications as
intended.
This part of IEC 61400-25 defines:
• the methods and abstract test cases for compliance testing of server and client devices
used...
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The focus of IEC 61400-25 (all parts) is on the communications between wind power plant
components such as wind turbines and actors such as SCADA systems. Internal
communication within wind power plant components is beyond the scope of
IEC 6140025
(all parts).
IEC 61400-25 (all parts) is designed for a communication environment supported by a clientserver
model. Three areas are defined, that are modelled separately to ensure the scalability
of implementations:
1) wind power plant informa...
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2018-10-23 PeC: Citation under the LVD is pending on EN 62838:2016, which cannot be cited at the moment

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This part of IEC 61400, which is a technical specification, provides a framework from which
time-based and production-based availability indicators of a wind power station can be
derived. It unambiguously describes how data is categorised and provides examples of how
the data can be used to derive availability indicators.
The approach is to apply the terms and definitions for the applied information models
introduced in IEC TS 61400-26-1 and IEC TS 61400-26-2 to a wind power station.
The b...
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This part of IEC 61400 provides a framework from which production-based performance
indicators of a WTGS (wind turbine generator system) can be derived. It unambiguously
describes how data is categorised and provides examples of how the data can be used to
derive performance indicators.
The approach of this part of IEC 61400 is to expand the time allocation model, introduced in
IEC TS 61400-26-1, with two additional layers for recording of the actual energy production
and potential energy ...
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This document covers turbines, storage pumps and pump-turbines of all sizes and of the
following types:
• Francis;
• Kaplan;
• propeller;
• Pelton (turbines only);
• bulb turbines.
This document also identifies without detailed discussion, other powerhouse equipment that
could affect or be affected by a turbine, storage pump, or pump-turbine rehabilitation.
The object of this document is to assist in identifying, evaluating and executing rehabilitation
and performance improvement proje...
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This part of IEC 61400 gives guidelines for declaring the apparent sound power level and
tonality of a batch of wind turbines. The measurement procedures for apparent sound power
level and tonality are defined in IEC 61400-11.

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This part of IEC 61400 defines generic information categories to which fractions of time can
be assigned for a wind turbine generating system (WTGS) considering internal and external
conditions based on fraction of time and specifying the following:
• generic information categories of a WTGS considering availability and other performance
indicators;
• information category priority in order to discriminate between concurrent categories;
• entry and exit point for each information category i...
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This part of IEC 61400 specifies a procedure for measuring the power performance
characteristics of a single wind turbine and applies to the testing of wind turbines of all types
and sizes connected to the electrical power network. In addition, this standard describes a
procedure to be used to determine the power performance characteristics of small wind
turbines (as defined in IEC 61400-2) when connected to either the electric power network or a
battery bank. The procedure can be used for ...
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This part of IEC 61400-25 specifies the information models related to condition monitoring for
wind power plants and the information exchange of data values related to these models.
NOTE Conformance to IEC 61400-25-6 presupposes in principle conformance to IEC 61400-25-2, IEC 61400-25-3
and IEC 61400-25-4.
Figure 2 illustrates the information flow of a system using condition monitoring to perform
condition based maintenance. The figure illustrates how data values are refined and
concentrat...
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IEC 61400-25-4:2008(E) specifies the specific mappings to protocol stacks encoding the messages required for the information exchange between a client and a remote server for data access and retrieval, device control, event reporting and logging, publisher/subscriber, self-description of devices (device data dictionary), data typing and discovery of data types. Covers several mappings, one of which shall be selected in order to be compliant with this part of IEC 61400-25. The IEC 61400-25 series...view more

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This part of the IEC 61400 describes the measurement of fundamental structural loads on
wind turbines for the purpose of the load simulation model validation. The standard prescribes
the requirements and recommendations for site selection, signal selection, data acquisition,
calibration, data verification, measurement load cases, capture matrix, post-processing,
uncertainty determination and reporting. Informative annexes are also provided to improve
understanding of testing methods.
The m...
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The focus of the IEC 61400-25 series is on the communications between wind power plant
components such as wind turbines and actors such as SCADA systems. Internal
communication within wind power plant components is outside the scope of the IEC 61400-25
series.
The IEC 61400-25 series is designed for a communication environment supported by a clientserver
model. Three areas are defined, that are modelled separately to ensure the scalability
of implementations:
1) wind power plant informati...
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    • Standard
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The focus of the IEC 61400-25 series is on the communications between wind power plant components such as wind turbines and actors such as SCADA systems. Internal communication within wind power plant components is outside the scope of the IEC 61400-25 series.
The IEC 61400-25 series is designed for a communication environment supported by a clientserver model. Three areas are defined, that are modelled separately to ensure the scalability of implementations: (1) wind power plant information mo...
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IEC 61400-27 defines standard electrical simulation models for wind turbines and wind power
plants. The specified models are time domain positive sequence simulation models, intended
to be used in power system and grid stability analyses. The models are applicable for dynamic
simulations of short term stability in power systems. IEC 61400-27 includes procedures for
validation of the specified electrical simulation models. The validation procedure for
IEC 61400-27 is based on tests specified...
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This part of IEC 61400 deals with safety philosophy, quality assurance, and engineering
integrity and specifies requirements for the safety of small wind turbines (SWTs) including
design, installation, maintenance and operation under specified external conditions. Its
purpose is to provide the appropriate level of protection against damage from hazards from
these systems during their planned lifetime.
This standard is concerned with all subsystems of SWTs such as protection mechanisms,
int...
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EN IEC 61400-23 defines the requirements for full-scale structural testing of wind turbine blades and for the interpretation and evaluation of achieved test results. The standard focuses on aspects of testing related to an evaluation of the integrity of the blade, for use by manufacturers and third party investigators. The following tests are considered in this standard: - static load tests; - fatigue tests; - static load tests after fatigue tests; - tests determining other blade properties. The...view more

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This Guide serves to:
a) present data on particle abrasion rates on several combinations of water quality, operating conditions, component materials, and component properties collected from a variety of hydro sites;
b) develop guidelines for the methods of minimizing particle abrasion by modifications to hydraulic design for clean water. These guidelines do not include details such as hydraulic profile shapes which should be determined by the hydraulic design experts for a given site;
c) deve...
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This part of IEC 61400-12 specifies a procedure for verifying the power performance characteristics of a single electricity-producing, horizontal axis wind turbine, which is not considered to be a small wind turbine per IEC 61400-2. It is expected that this standard will be used when the specific operational or contractual specifications may not comply with the
requirements set forth in IEC 61400-12-1:2005. The procedure can be used for power performance evaluation of specific turbines at speci...
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This part of the IEC 61400 series is applicable to enclosed speed increasing gearboxes for horizontal axis wind turbine drivetrains with a power rating in excess of 500 kW. This standard applies to wind turbines installed onshore or offshore. This International Standard provides guidance on the analysis of the wind turbine loads in relation to the design of the gear and gearbox elements. The gearing elements covered by this standard include such gears as spur, helical or double helical and their...view more

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    • Standard
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This part of IEC 61400 presents measurement procedures that enable noise emissions of a wind turbine to be characterised. This involves using measurement methods appropriate to noise emission assessment at locations close to the machine, in order to avoid errors due to sound propagation, but far away enough to allow for the finite source size. The procedures described are different in some respects from those that would be adopted for noise assessment in community noise studies. They are intende...view more

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