This document specifies the principal characteristics of alternating current (a.c.) generators under the control of their excitation control system when used for reciprocating internal combustion (RIC) engine driven generating set applications and supplements the requirements given in IEC 60034-1. It covers the use of such a.c. generators for land and marine applications, excluding generating sets used on aircraft or to propel land vehicles and locomotives. NOTE For some specific applications (e.g. essential hospital supplies, high-rise buildings, operation parallel with the grid), supplementary requirements can be necessary. The provisions of this document can be regarded as the basis for establishing any supplementary requirements. For a.c. generating sets driven by other reciprocating-type prime movers (e.g. steam engines) the provisions of this document can be used as basis for establishing these requirements.

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This part of IEC 60034 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.
Common requirements are specified together with specific requirements for air, hydrogen or
liquid cooled synchronous generators or compensators.
This document also gives the precautions to be taken when using hydrogen cooled generators
including:
• rotating exciters driven by synchronous generators;
• auxiliary equipment needed for operating the generators;
• parts of the building where hydrogen might accumulate.
These requirements also apply to a synchronous generator driven by both a steam turbine and
a combustion gas turbine as part of a single shaft combined cycle unit.
These requirements do not apply to synchronous generators driven by water (hydraulic)
turbines or wind turbines.
NOTE The precautions taken when using hydrogen are valid for all cases where hydrogen is used as a coolant.

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These standards provide technical requirements for the connection of generating plants up to and including Type A (-1-1)/ Type B (-1-2) which can be operated in parallel with a public LV distribution network. They are intended to be used as a technical reference for connection agreements between DNOs and electricity producers and to demonstrate compliance with COMMISSION REGULATION (EU) 2016/631 (Requirements for Generators).

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  • Corrigendum
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These standards provide technical requirements for the connection of generating plants up to and including Type A (-1-1)/ Type B (-1-2) which can be operated in parallel with a public LV distribution network. They are intended to be used as a technical reference for connection agreements between DNOs and electricity producers and to demonstrate compliance with COMMISSION REGULATION (EU) 2016/631 (Requirements for Generators).

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This standard provides technical requirements for the connection of generating plants up to and including Type B which can be operated in parallel with a public MV distribution network. They are intended to be used as a technical reference for connection agreements between DSOs and electricity producers and to demonstrate compliance with COMMISSION REGULATION (EU) 2016/631 (Requirements for Generators).

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These standards provide technical requirements for the connection of generating plants up to and including Type A (-1-1)/ Type B (-1-2) which can be operated in parallel with a public LV distribution network. They are intended to be used as a technical reference for connection agreements between DNOs and electricity producers and to demonstrate compliance with COMMISSION REGULATION (EU) 2016/631 (Requirements for Generators).

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This standard provides technical requirements for the connection of generating plants up to and including Type B which can be operated in parallel with a public MV distribution network. They are intended to be used as a technical reference for connection agreements between DSOs and electricity producers and to demonstrate compliance with COMMISSION REGULATION (EU) 2016/631 (Requirements for Generators).

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These standards provide technical requirements for the connection of generating plants up to and including Type A (-1-1)/ Type B (-1-2) which can be operated in parallel with a public LV distribution network. They are intended to be used as a technical reference for connection agreements between DNOs and electricity producers and to demonstrate compliance with COMMISSION REGULATION (EU) 2016/631 (Requirements for Generators).

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Specifies the general requirements for erection and operation of PV arrays in decentralized rural electrification systems. Provides safety and fire protection requirements for ELV and LV PV arrays intended to uninformed persons, including owners and users of the premises where photovoltaic arrays are installed; informed workers (e.g. electricians) working on these systems; and emergency workers (for example fire fighters).

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IEC/TS 62257-7:2008(E) specifies the general requirements for generators (maximum power = 100 kVA) in decentralized rural electrification systems. Points out the main items that must be considered when selecting, sizing, installing, operating and maintaining this equipment. Is a general introduction followed by more specific documents dedicated to the generation technologies which are the most currently used in rural electrification projects.

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This part of IEC 60034 applies to three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. It supplements the basic requirements for rotating machines given in IEC 60034-1. Common requirements are prescribed together with specific requirements for air, for hydrogen or for liquid cooled synchronous generators. This part of IEC 60034 also gives the precautions to be taken when using hydrogen cooled generators including: - rotating exciters driven by synchronous generators; - auxiliary equipment needed for operating the generators; - parts of the building where hydrogen might accumulate.

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This part of IEC 60034 applies to three-phase salient-pole synchronous generators and synchronous motor-generators for hydraulic turbine and pump-turbine applications, that have rated frequency of 50 Hz or 60 Hz, rated output of 10 MVA and above, pole pair number 3 and above, and rated voltage of 6 kV and above. This document supplements basic requirements for rotating machines given in IEC 60034-1.

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Primarily intended for the manufacturer. Not applicable to generators with pulsed sinusoidal outputs, television pattern generators, complex function generators, and generators for insulation resistance testing. Lays down a standard list of performance characteristics to be used for describing the performance of pulse generators. Defines which characteristics should be specified and standard test conditions.

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CEN/CLC JTFPE converted into CEN/CLC TC 2

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This standard gives guidance on writing the technical specification for the procurement of turbine-driven generators and their auxiliaries for use in electricity generating stations (power stations). This Guide for procurement is not applicable to equipment for use in the nuclear reactor plant area of nuclear power stations. Other possible applications of such equipment have not been considered in the preparation of this Guide. The generators may be air, hydrogen, or liquid-cooled. The excitation system may be of the static or rotating rectifier type fed by a static or rotating power supply. The equipment covered by this Guide is defined by its function rather than design type. Therefore, the guidance to the specification is stated in performance terms rather than being specified by a detailed description of the equipment to be supplied. This Guide indicates to potential purchasers how their specification should be prepared so that: - the equipment type and capacity interfaces correctly with other elements of the systems; - predicted performance is achieved; - ancillary equipment is properly sized; - reliability, availability and safety requirements are achieved; - proper consideration is given to the evaluation process and the quality measures to be applied. This Guide does not determine the type of specification (e.g. detailed, performance, functional) or the extent of supply for any given contract which is normally decided on the basis of the purchaser’s project strategy. It does not cover: - any commercial, contractual or legal issues which are normally in separate parts of an enquiry; - any allocation of responsibilities which are determined by the contract. This Guide does not prescribe the arrangement of the documents in the enquiry. NOTE: As a comprehensive European environmental policy is still under preparation, this Guide does not address the environmental implications of the equipment.

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Provides the future purchaser with information allowing him to prepare the required documents, from the call for tenders up to acceptance tests and operation of electromechanical equipment. Applies to installations having outputs of less than 5 MW and turbines with diameters less than 3 m.

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This part of IEC 60034 applies to three-phase salient-pole synchronous generators and synchronous motor-generators for hydraulic turbine and pump-turbine applications, that have rated frequency of 50 Hz or 60 Hz, rated output of 10 MVA and above, pole pair number 3 and above, and rated voltage of 6 kV and above.
This document supplements basic requirements for rotating machines given in IEC 60034-1.

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The purpose of this Technical Specification is to provide technical guidance on the requirements for
generating plants which can be operated in parallel with a distribution network.
For practical reasons, this Technical Specification refers to the distribution system operator in case
settings have to be defined and/or provided, even when these settings are to be defined and/or
provided by another actor according to national and European legal framework.
NOTE 1 This includes European network codes and their national implementation, as well as further national
regulations.
NOTE 2 Further national requirements especially for the connection to the distribution network and the
operation of the generating plant can apply.
The requirements of this Technical Specification apply to all generating plants, electrical machinery
and electronic equipment, irrespective of the kind of primary energy source and irrespective of the
presence of loads in the producer’s network that meet all of the following conditions:
– converting any primary energy source into AC electricity;
– connected to a LV distribution network and rated at more than 16 A per phase;
– intended to operate in parallel with this distribution network under normal network operating
conditions.
NOTE 3 Generating plants rated up to and including 16 A per phase are covered by EN 50438.
NOTE 4 Generating plants connected to a MV distribution network fall into the scope of CLC/TS 50549-2.
Unless stated differently by the DSO generating plants connected to a medium voltage distribution
network with a maximum apparent power up to 100 kVA can comply with this Technical Specification
as alternative to the requirements of CLC/TS 50549-2. A different threshold may be defined by the
DSO.
This Technical Specification defines connection requirements.
This Technical Specification recognizes the existence of National Standards, Network Codes, and
specific technical requirements of the DSOs. These should be complied with.
Excluded from the scope are:
– the selection and evaluation of the point of connection;
– power system impact assessment;
– connection assessment;
– island operation of generating plants, both intentional and unintentional, where no part of the
distribution network is involved;
– active front ends of drives feeding energy back into the distribution network for short duration;
– requirements for the safety of personnel as they are already adequately covered by existing
European Standards.

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The purpose of this Technical Specification is to provide technical guidance for the connection of generating plants which can be operated in parallel with a public distribution network.
This Technical Specification is intended to be used as a technical reference in connection agreements between DNOs and electricity producers.
The requirements of this Technical Specification only apply to electrical machinery and equipment, irrespective of the kind of primary energy source.
This Technical Specification applies to all three-phase generating units that meet all of the following conditions as an individual generating unit or as a cluster of generating units with a common point of connection:
•   converting any primary energy source into AC electricity;
•   connected to the MV network;
•   intended to operate in parallel with a public distribution network under normal network operating conditions.
This Technical Specification defines interconnection requirements and a conformance test procedure.
Island operation of generating plants, both intentional and unintentional, where no part of the public distribution system is involved is out of the scope of this Technical Specification.
Safety of personnel is out of the scope of this Technical Specification.
This Technical Specification recognises the existence of National Standards and Network Codes: these must be complied with. Only in the absence of these National Standards and Codes should the requirements of this Technical Specification be applied.

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This European Standard specifies technical requirements for the protection functions and the operational capabilities of micro-generating plants, designed for operation in parallel with public lowvoltage distribution networks. This European Standard applies irrespectively of the micro-generating plants’ primary source of energy, where micro-generation refers to equipment with nominal currents up to and including 16 A per phase, single or multi phase 230/400 V or multi phase 230 V (phase-to-phase nominal voltage). For practical reasons, this European Standard refers to the distribution system operator in case settings have to be defined and/or provided, even when these settings are to be defined and/or provided by another actor according to national and European legal framework.
NOTE 1 This includes European network codes and their national implementation, as well as further national regulations.
NOTE 2 Further national requirements especially for the connection to the grid and the operation of the micro-generator can apply as long as they are not in conflict with this EN. In some countries, this document may be applied to generators with higher nominal currents used mostly in domestic and small commercial installations. These countries are listed in Annex G. The provisions of this European Standard are not intended to ensure by themselves the safety of DSO personnel or their contracted parties. The following aspects are included in the scope:
• all micro-generation technologies are applicable.
The following aspects are excluded from the scope:
• multiple units that for one installation, in aggregate, exceed 16 A;
• issues of revenue rebalancing, metering or other commercial matters;
• requirements related to the primary energy source e.g. matters related to gas fired generator units;
• island operation of generating plants, both intentional and unintentional, where no part of the public distribution network is involved;
• active front ends of drives feeding energy back into the distribution network for short duration.

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This European Standard specifies technical requirements for connection and operation of fixed installed micro-generators and their protection devices, irrespective of the micro-generators primary source of energy, in parallel with public low-voltage distribution networks, where micro-generation refers to equipment rated up to and including 16 A per phase, single or multi phase 230/400 V or multi phase 230 V (phase-to-phase voltage). This European Standard is intended for installation mainly in the domestic market.

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The purpose of this Technical Specification is to provide technical guidance on the requirements for generating plants which can be operated in parallel with a distribution network. For practical reasons, this Technical Specification refers to the distribution system operator in case settings have to be defined and/or provided, even when these settings are to be defined and/or provided by another actor according to national and European legal framework. NOTE 1 This includes European network codes and their national implementation, as well as further national regulations. NOTE 2 Further national requirements especially for the connection to the distribution network and the operation of the generating plant can apply. The requirements of this Technical Specification apply to all generating plants, electrical machinery and electronic equipment, irrespective of the kind of primary energy source and irrespective of the presence of loads in the producer’s network that meet all of the following conditions: - converting any primary energy source into AC electricity; - connected to a MV distribution network; - intended to operate in parallel with this distribution network under normal network operating conditions. NOTE 3 Generating plants connected to a LV distribution network fall into the scope of EN 50438 (up to 16 A) and CLC/TS 50549-1 (above 16 A). Unless stated differently by the DSO, a generating plant with a maximum apparent power up to 100 kVA can, as alternative to the requirements of this Technical Specification, comply with CLC/TS 50549-1. A different threshold may be defined by the DSO. This Technical Specification defines connection requirements. This Technical Specification recognizes the existence of National Standards, Network Codes, and specific technical requirements of the DSOs. These should be complied with. Excluded from the scope are: - the selection and evaluation of the point of connection; - power system impact assessment; - connection assessment; - island operation of generating plants, both intentional and unintentional, where no part of the distribution network is involved; - active front ends of drives feeding energy back into the distribution network for short duration; - requirements for the safety of personnel as they are already adequately covered by existing European Standards.

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The purpose of this Technical Specification is to provide technical guidance on the requirements for generating plants which can be operated in parallel with a distribution network. For practical reasons, this Technical Specification refers to the distribution system operator in case settings have to be defined and/or provided, even when these settings are to be defined and/or provided by another actor according to national and European legal framework. NOTE 1 This includes European network codes and their national implementation, as well as further national regulations. NOTE 2 Further national requirements especially for the connection to the distribution network and the operation of the generating plant can apply. The requirements of this Technical Specification apply to all generating plants, electrical machinery and electronic equipment, irrespective of the kind of primary energy source and irrespective of the presence of loads in the producer’s network that meet all of the following conditions: - converting any primary energy source into AC electricity; - connected to a LV distribution network and rated at more than 16 A per phase; - intended to operate in parallel with this distribution network under normal network operating conditions. NOTE 3 Generating plants rated up to and including 16 A per phase are covered by EN 50438. NOTE 4 Generating plants connected to a MV distribution network fall into the scope of CLC/TS 50549-2. Unless stated differently by the DSO generating plants connected to a medium voltage distribution network with a maximum apparent power up to 100 kVA can comply with this Technical Specification as alternative to the requirements of CLC/TS 50549-2. A different threshold may be defined by the DSO. This Technical Specification defines connection requirements. This Technical Specification recognizes the existence of National Standards, Network Codes, and specific technical requirements of the DSOs. These should be complied with. Excluded from the scope are: - the selection and evaluation of the point of connection; - power system impact assessment; - connection assessment; - island operation of generating plants, both intentional and unintentional, where no part of the distribution network is involved; - active front ends of drives feeding energy back into the distribution network for short duration; - requirements for the safety of personnel as they are already adequately covered by existing European Standards.

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This European Standard specifies technical requirements for the protection functions and the operational capabilities of micro-generating plants, designed for operation in parallel with public low-voltage distribution networks. This European Standard applies irrespectively of the micro-generating plants’ primary source of energy, where micro-generation refers to equipment with nominal currents up to and including 16 A per phase, single or multi phase 230/400 V or multi phase 230 V (phase-to-phase nominal voltage). For practical reasons, this European Standard refers to the distribution system operator in case settings have to be defined and/or provided, even when these settings are to be defined and/or provided by another actor according to national and European legal framework. NOTE 1 This includes European network codes and their national implementation, as well as further national regulations. NOTE 2 Further national requirements especially for the connection to the grid and the operation of the micro-generator can apply as long as they are not in conflict with this EN. In some countries, this document may be applied to generators with higher nominal currents used mostly in domestic and small commercial installations. These countries are listed in Annex G. The provisions of this European Standard are not intended to ensure by themselves the safety of DSO personnel or their contracted parties. The following aspects are included in the scope: • all micro-generation technologies are applicable. The following aspects are excluded from the scope: • multiple units that for one installation, in aggregate, exceed 16 A; • issues of revenue rebalancing, metering or other commercial matters; • requirements related to the primary energy source e.g. matters related to gas fired generator units; • island operation of generating plants, both intentional and unintentional, where no part of the public distribution network is involved; • active front ends of drives feeding energy back into the distribution network for short duration.

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This part of IEC 60034 applies to three-phase cylindrical rotor synchronous machines, having rated outputs of 10 MVA (or MW) and above. It supplements the basic requirements for rotating machines given in IEC 60034-1. The special requirements of machines continuously fed by inverters are not covered by this standard. Common requirements for all cylindrical rotor machines are prescribed together with specific requirements for air, for hydrogen or for liquid cooled cylindrical rotor synchronous machines. This part of IEC 60034 also gives the precautions to be taken when using hydrogen cooled machines including - rotating exciters driven by cylindrical rotor type machines; - auxiliary equipment needed for operating the machines; - parts of the building where hydrogen might accumulate.

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This European Standard specifies technical requirements for connection and operation of fixed installed micro-generators and their protection devices, irrespective of the micro-generators primary source of energy, in parallel with public low-voltage distribution networks, where micro-generation refers to equipment rated up to and including 16 A per phase, single or multi phase 230/400 V or multi phase 230 V (phase-to-phase voltage). This European Standard is intended for installation mainly in the domestic market.

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Former HD 53.3 S1 * Superseded by EN 60034-5:2005

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ISO 8528-3:2005 specifies the principal characteristics of Alternating Current (a.c.) generators under the control of their voltage regulators when used in generating set applications. It supplements the requirements of IEC 60034-1. ISO 8528-3:2005 applies to a.c. generators used in a.c. generating sets driven by reciprocating internal combustion (RIC) engines for land and marine use, excluding generating sets used on aircraft or to propel land vehicles and locomotives. For some specific applications (e.g. essential hospital supplies, high-rise buildings) supplementary requirements may be necessary. The provisions of ISO 8528-3:2005 should be regarded as the basis for establishing any supplementary requirements. For a.c. generating sets driven by other reciprocating-type prime movers (e.g. steam engines), the provisions of ISO 8528-3:2005 should be used as a basis for establishing these requirements.

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Establishes the principal characteristics of a.c. generators under the control of their voltage regulators when used for reciprocating internal combustion engine driven generating sets. Supplements the requirements given in HD 53.1

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Applies to three-phase turbine-type machines, with rated outputs of 10 MVA and above, used as generators.

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Specifies the principal characteristics of a.c. generators under the control of their voltage regulators when used for generating set applications. Applies to a.c. generating sets for land and marine use, excluding generating sets used on aircraft or to propel land vehicles and locomotives. For some specific applications (e.g. essential hospital supplies, high-rise buildings, etc.) supplementary requirements may be necessary.

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