I96 - Imaginarni 96

EN-IEC 62041 is applicable to transformers, reactors and power supply units covered by the IEC 61558 series of standards. This document deals with the electromagnetic compatibility requirements for emission and immunity within the frequency range 0 Hz to 400 GHz. No tests need to be performed at frequencies where no requirements are specified. For associated transformers, associated reactors and associated power supply units either supplied with or incorporated into an appliance or equipment the relevant EMC standard for that appliance or equipment applies. This document covers normal operating conditions only. Other operations of the transformers, reactors and power supply units (e.g. simulated faults in the electric circuitry for testing purposes or functional safety due to the effects of the electromagnetic phenomena, or evaluation of human being for exposure to electromagnetic fields (EMF)) have not been taken into consideration in this document. Requirements are specified for each port considered. If requirements are different the most severe takes precedence. This document may also be used as a guide to test transformers, reactors and power supply units separately before these are incorporated into an appliance or equipment. This document does not apply to: - uninterruptible power supplies (UPS) covered by IEC 62040 (all parts); - power supply units covered by IEC 61204, (i.e. DC-DC converters, DC power and distribution equipment and power supply units for use in applications covered by IEC 60950-1, IEC 61010-1, IEC 60601-1 and IEC 60065); - power supplies and converters for use with or in products covered by IEC 61347 (all parts).

NEW!IEC 61558-1:2017 is available as IEC 61558-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 61558-1:2017 deals with safety aspects of transformers, reactors, power supply units and combinations thereof such as electrical, thermal and mechanical safety. This document covers the following independent or associated stationary or portable types of dry-type transformers, power supply units, including switch mode power supply units, reactors and combinations thereof in the field of safety. The windings can be encapsulated or non-encapsulated. They are not forming a part of the distribution network. This third edition cancels and replaces the second edition published in 2005 and Amendment 1:2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a. fully insulated winding wires (FIW), new tables and aging tests for FIW constructions, b. overvoltage categories 1, 2, 3 and 4 for clearances and dielectric strength tests (new tables) are included, c. development of new symbols for the different overvoltage categories, d. symbol for maximum altitudes, if higher than 2 000 m, e. symbol for plug in power supply units, if the pins are damaged (tumbling barrel test), f. symbol for minimum temperature (even during the transportation), g. alternative temperature measurement, simulated load and back to back method according to IEC 60076-11, h. short circuit and overload protection, simulated load and back to back method according to IEC 60076-11, i. adjustment of temperatures in Table 2 according to CENELEC Guide 29, j. establishing partial discharge test above 750 V for FIW constructions, k. requirements for toroidal core constructions, division for basic and for supplementary isolation, l. modification of protection indexes for enclosures (IP-code), m. dimensioning of rectangular cross section connectors for transformers, n. repetition test, 80% of required dielectric strength test voltage of Table 14,a. o. vibration test for vehicles and railway applications, p. two Y1 Capacitors for working voltages above 250 V and not exceeding 500 V with overvoltage category 3. It has the status of a group safety publication in accordance with IEC Guide 104.

EN IEC 61558-2-10 deals with the safety of separating transformers with high insulation level and separating transformers with output voltages exceeding 1000 V. Transformers incorporating electronic circuits are also covered by this standard. Unless otherwise specified, from here onward, the term transformer covers separating transformers with high insulation level and separating transformers with output voltages exceeding 1000 V a.c or 1500 V d.c . This Part 2-10 is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent or associated dry-type transformers. The windings may be encapsulated or non-encapsulated. This standard is applicable to transformers and power supply (linear) with internal operational frequencies not exceeding 500 Hz. This standard used in combination with Part 2-16 for switch mode power supply units (SMPS) is also applicable to power supplies with internal operational frequencies higher than 500 Hz. Where the two requirements are in conflict the most severe take precedence. The rated supply voltage does not exceed 1 000 V a.c., and the rated supply frequency and the internal operating frequency do not exceed 500 Hz. The rated supply voltage does not exceed 1000 V a.c., and the rated supply frequency and the internal operating frequency do not exceed 500 Hz. The rated output does not exceed: - 25 kVA for single-phase transformers; - 40 kVA for polyphase transformers. This Part 2-10 is applicable to transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer. Where applicable the no-load output voltage or the rated output voltage: - does not exceed 1000 V a.c. or 1500 V d.c. for separating transformers with high insulation level; - does exceed 1000 V a. c or 1500 V d.c. and does not exceed 15 000 V a.c. or 15000 V d.c. for separating transformer with output voltage exceed 1000 V. This Part 2-10 is not applicable to: - transformers covered by IEC 60076-11; - neon transformers covered by IEC 61050 and - power supplies and converters for use with or in products according to IEC 61347-2-10. This Part 2-10 is not applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers. Transformers covered by this Part 2-10 are used only in applications where double or reinforced insulation between circuits is not required by the installation rules or by the end product standard.

This part of IEC 61558 deals with the safety of transformers, power supply units and switch mode power supply units all for saving energy and other purposes in electrical installations by adjusting the output voltage and/or other electrical characteristics on the output circuits without interruption affected by the transformers, power supply unit and switch mode power supply unit. The saving of energy is obtained by voltage stabilization and/or voltage adjusting of the electrical installation. This standard may also be used for power supply units and switch mode power supply units intended to be used where adjusting of the voltage or other electrical characteristics is required by the final application. This part applies to single-phase or three-phase transformers, power supply units and switch mode power supply units all for saving energy which are air-cooled (natural or forced), independent or incorporated and containing transformers and/or power supply units from the following parts of the IEC 61558 series: Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications. Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers. Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers. Part 2-13: Particular requirements and tests for auto transformers and power supply units incorporating auto transformers. Part 2-14: Particular requirements and tests for variable transformers and power supply units incorporating variable transformers. Part 2-16: Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units. The rated supply voltage does not exceed 1000 V a.c., and the rated supply frequency does not exceed 500 Hz.

This part of IEC 61558 deals with the safety of switch mode power supply units and transformers for switch mode power supply units. Transformers incorporating electronic circuits are also covered by this standard.

This part of IEC 61558 deals with safety of variable transformers for general applications and power supply units incorporating variable transformers for general applications. Transformers incorporating electronic circuits are also covered by this standard. NOTE 1 Safety includes electrical, thermal, mechanical and chemical aspects. Unless otherwise specified, from here onward, the term transformer covers variable transformers for general applications and power supply units incorporating variable transformers for general applications. The rated supply voltage does not exceed 1 000 V a.c., and the rated supply frequency does not exceed 500 Hz. This standard is applicable to transformers and power supply units (linear) with internal operational frequencies not exceeding 500 Hz. This standard used in combination with Part 2-16 for switch mode power supply units (SMPS) is also applicable to power supplies with internal operational frequencies higher than 500 Hz. Where the two requirements are in conflict the most severe take precedence This part does not apply to transformers covered by IEC 60076-11. This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent or associated dry-type transformers.
– variable auto-transformers and power supply units incorporating variable autotransformers;
– variable separating transformers and power supply units incorporating variable separating transformers;
– variable isolating transformers and power supply units incorporating variable isolating transformers;
– variable safety isolating transformers and power supply units incorporating variable safety isolating transformers. The windings may be encapsulated or non-encapsulated. The rated output does not exceed:
– 40 kVA for single-phase variable auto-transformers and power supply units
incorporating single-phase variable auto-transformers;
– 200 kVA for poly-phase variable auto-transformers and power supply units
incorporating poly-phase variable auto-transformers;
– 1 kVA for single-phase variable separating transformers and power supply units incorporating single-phase variable separating transformers;
– 5 kVA for poly-phase variable separating transformers and power supply units incorporating poly-phase variable separating transformers;
– 25 kVA for single-phase variable isolating transformers and power supply units incorporating single-phase variable isolating transformers;
– 40 kVA for poly-phase variable isolating transformers and power supply units incorporating poly-phase variable isolating transformers;
– 10 kVA for single-phase variable safety isolating transformers and power supply units incorporating single-phase variable safety isolating transformers;
– 16 kVA for poly-phase variable safety isolating transformers and power supply units incorporating poly-phase variable safety isolating transformers. This part is applicable to transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer.

This part of IEC 61558 deals with safety aspects of isolating transformers for the supply of medical locations. Unless otherwise specified, from here onward, the term transformer covers isolating transformers for the supply of medical locations. This part is applicable to stationary, single-phase or three-phase, air-cooled (natural or forced) independent dry-type isolating transformers for the supply of medical IT systems for group 2 medical locations, designed to be permanently connected to the fixed wiring and intended to form the IT power system on the secondary side. The windings may be encapsulated or nonencapsulated. The rated supply voltage does not exceed 1000 V a.c. The rated supply frequency and internal operational frequency do not exceed 500 Hz. The rated output does not be less than 0,5 kVA and does not exceed 10 kVA for single-phase and three-phase transformers. This part is applicable to transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer. The no-load output voltage and the rated output voltage does not exceed 250 V a.c. for single-phase or three-phase transformer (phase-to-phase voltage). This standard do not cover power supply unit. This part is not applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers. Transformers covered by this part are used in applications where double or reinforced insulation between circuits is required by the installation rules or by the appliance specification. - for transformers intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary; - measures to protect the enclosure and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered; - the different conditions for transportation, storage, and operation of the transformers should also be considered; - additional requirements in accordance with other appropriate standards and national rules may be applicable to transformers intended for use in special environments.

This part of IEC 61558 deals with the safety of constant voltage transformers for general applications and power supply units for constant voltage for general applications. Constant voltage transformers incorporating electronic circuits are also covered by this standard.
NOTE 1 Safety includes electrical, thermal and mechanical aspects.
Unless otherwise specified, from here onward, the term transformer covers constant voltage transformers for general applications and power supply units for constant voltage for general applications.
This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced), independent or associated dry-type:
– constant voltage auto-transformers;
– constant voltage separating transformers;
– constant voltage isolating transformers;
– constant voltage safety isolating transformers.
The windings may be encapsulated or non-encapsulated.
This standard is applicable to transformers and power supply (linear) with internal operating frequencies not exceeding 500 Hz.
This standard used in combination with Part 2-16 for switch mode power supply (SMPS) units is also applicable to power supplies with internal operating frequencies higher than 500 Hz. Where the two requirements are in conflict, the most severe take precedence.
The rated supply voltage does not exceed 1 000 V a.c., the rated supply frequency does not exceed 500 Hz, the internal operating resonant frequency does not exceed 30 kHz and the internal operating frequency does not exceed 100 MHz.
The rated output does not exceed:
– 40 kVA for single-phase constant voltage auto-transformers;
– 200 kVA for poly-phase constant voltage auto-transformers;
– 25 kVA for single-phase constant voltage separating transformers and constant voltage isolating transformers;
– 40 kVA for poly-phase constant voltage separating transformers and constant voltage isolating transformers;
– 10 kVA for single-phase constant voltage safety isolating transformers;
– 16 kVA for poly-phase constant voltage safety isolating transformers.
This part is applicable to transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer.
(...)

Replacement:
This part of IEC 61558 deals with the safety of transformers for class III handlamps for tungsten filament lamps and power supply units incorporating transformers for class III handlamps for tungsten filament lamps. Transformers incorporating electronic circuits are also covered by this standard.
NOTE 1 Safety includes electrical, thermal, mechanical and chemical aspects.
Unless otherwise specified, from here onward, the term transformer covers transformers for
class III handlamps for tungsten filament lamps and power supply units incorporating transformers for class III handlamps for tungsten filament lamps. This part is applicable to stationary or portable single-phase air-cooled (natural or forced) independent or associated dry-type transformers. The windings may be encapsulated or non-encapsulated. This standard is applicable to transformers and power supply (linear) with internal operational frequencies not exceeding 500 Hz. This standard used in combination with Part 2-16 for switch mode power supply (SMPS) units is also applicable to power supplies with internal operational frequencies higher than 500 Hz. Where the two requirements are in conflict, the most severe take precedence. The rated supply voltage does not exceed 1 000 V a.c., and the rated supply frequency and the internal operational frequencies do not exceed 500 Hz. Transformers for class III handlamps for tungsten filament lamps have the following additional characteristics:
– the no-load output voltage and the rated output voltage do not exceed 50 V a.c. or 120 V ripple-free d.c.;
– there is only a small difference between the no-load voltage and the rated output voltage.
The rated output does not exceed:
– 10 kVA.
This part is not applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers. Transformers covered by this part are used in applications where double or reinforced insulation between circuits is required by the installation rules or by the end product standard.
NOTE 2 Attention is drawn to the following:
- for transformers intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary;
- measures to protect the enclosure and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered;
- the different conditions for transportation, storage, and operation of the transformers should also be considered;
- additional requirements in accordance with other appropriate standards and national rules may be applicable to transformers intended for use in special environments.
NOTE 3 Future technological development of transformers may necessitate a need to increase the upper limit of the frequencies, until then this part may be used as a guidance document.

Replacement:
This part of IEC 61558 deals with the safety of small reactors for general applications.
NOTE 1 Safety includes electrical, thermal and mechanical aspects.
Unless otherwise specified, from here onward, the term transformer or reactor covers small
reactors.
This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural
or forced) general purpose reactors including alternating current, premagnetised and current
compensated independent or associated reactors.
The rated supply voltage does not exceed 1 000 V a.c. or 1 500V ripple-free d.c., the rated supply frequency and the internal operational frequencies do not exceed 1 MHz.
The rated power does not exceed:
– 25 kVAR a.c. (25 kW d.c.) for single-phase reactors,
– 50 kVAR a.c. (50 kW d.c.) for poly-phase reactors.
This part is applicable to reactors without limitations of the rated power subject to an agreement between the purchaser and the manufacturer.
This part is applicable to dry-type reactors. The windings may be encapsulated or nonencapsulated.
This part does not apply to:
– reactors covered by IEC 60289;
– ballast for tubular fluorescent covered by IEC 61347-2-8;
– ballast for discharge lamps (excluding tubular fluorescent lamps) covered by IEC 61347-2-9.
NOTE 2 For reactors filled with liquid dielectric or pulverised material such as sand, additional requirements are under consideration.
NOTE 3 Attention is drawn to the following:
- for reactors intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary;
- measures to protect the enclosure and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered;
- the different conditions for transportation, storage, and operation of the reactor should also be considered;
- additional requirements in accordance with other appropriate standards and national rules may be applicable to reactors intended for use in special environments, such as tropical environment.
NOTE 4 Normally, reactors are intended to be associated with equipment for functional requirements of the equipment or requirements by the installation rules or by other appliance specifications.
NOTE 5 Reactors incorporating electronic circuits and components are also covered by this standard.
NOTE 6 The protection against electric shock may be provided (or completed) by other parts or features of the equipment, such as the body.
NOTE 7 Reactors for particular applications will in the future be covered by complementary normative annexes.
NOTE 8 Future technological development of reactors may necessitate a need to increase the upper limit of the frequencies, until then this part may be used as a guidance document.

This international product family standard applies to transformers, reactors, power supply units and combinations thereof covered by the IEC 61558 series of standards. This standard deals with the electromagnetic compatibility requirements for emission and immunity within the frequency range 0 Hz - 400 GHz. No measurement needs to be performed at frequencies where no requirement is specified. Transformers, reactors, power supply units and combinations thereof delivered with or incorporated in an appliance or equipment should follow the relevant EMC standard applicable to that appliance or equipment. However, this standard may be used as a guide to test the transformers, reactors, power supply units and combinations thereof separately before incorporating them in the appliance or equipment. This EMC standard covers performance only. Other operations of the transformers, reactors and power supply units (e.g. simulated faults in the electric circuitry for testing purposes or functional safety due to the effects of the electromagnetic phenomena, or evaluation of human being for exposure to electromagnetic fields (EMF)) have not been taken into consideration in this standard. This standard does not apply to: - uninterruptible power supplies (UPS) covered by IEC 62040 series; - power supply units covered by IEC 61204-3, (i.e. DC-DC converters, DC power and distribution equipment and power supply units for use in applications covered by IEC 60950-1, IEC 61010-1, IEC 60601-1, IEC 60065 and IEC 62368-1); - power supplies and converters for use with or in products covered by IEC 61347-1.

This part of IEC 61558 deals with the safety of transformers for construction sites and power supply units incorporating transformers for construction sites. Transformers incorporating electronic circuits are also covered by this standard. Unless otherwise specified, from here onward, the term transformer covers transformers for construction sites and power supply units incorporating transformers for construction sites. This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent or associated transformers, being isolating or safety isolating drytype transformers for the use on construction sites. The windings may be encapsulated or non-encapsulated. The rated supply voltage does not exceed 1 000 V a.c., and the rated supply frequency and the internal operating frequencies do not exceed 500 Hz. This standard used in combination with Part 2-16 for Switch mode power supply units (SMPS) is also applicable to power supplies with internal operating frequencies higher than 500 Hz. Where the two requirements are in conflict the most severe take precedence The rated output does not exceed: - 25 kVA for single-phase transformers; - 40 kVA for poly-phase transformers. This part is applicable to transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer. Isolating transformers and power supply units incorporating isolating transformers for construction sites have a no-load output voltage and a rated output voltage exceeding 50 V a.c. and not exceeding 250 V a.c. Safety isolating transformers and power supply units incorporating safety isolating transformers for construction sites have a no-load output voltage and a rated output voltage not exceeding 50 V a.c. Transformers and power supply units covered by this part are used in applications where it is required by the installation rules or by the appliance specification for protection purposes. When the transformers or power supply units are incorporated into low voltage switchgear and controlgear assemblies for construction sites as specified in IEC 60439-4, the additional requirements of IEC 60439-4 will apply to the assembly.

This part of IEC 61558 deals with the safety of bell and chime transformers and power supply units incorporating bell and chime transformers. Transformers incorporating electronic circuits are also covered by this standard. NOTE 1 Safety includes electrical, thermal and mechanical aspects. Unless otherwise specified, from here onward, the term transformer covers bell and chime transformers and power supply units incorporating bell and chime transformers. This part is applicable to stationary, single-phase, air-cooled (natural or forced) independent or associated dry-type transformers. The windings may be encapsulated or nonencapsulated. This standard is applicable to transformers and power supply (linear). This standard used in combination with part 2-16 for switch mode power supply (SMPS) units is also applicable to power supplies with internal operating frequencies higher than 500 Hz. Where the two requirements are in conflict, the most severe takes precedence. The rated supply voltage does not exceed 250 V a.c., and the rated supply frequency and does not exceed 500 Hz. This standard is applicable to transformers and linear power supply units with internal operating frequency not exceeding 500 Hz. The rated output shall not exceed 100 VA. The no-load output voltage does not exceed 33 V a.c. or 46 V ripple-free d.c., and the rated output voltage does not exceed 24 V a.c., or 33 V ripple-free d.c. Bell and chime transformers are generally intended to supply domestic sound signalling equipment and other similar devices where the load is applied for short periods of time.

This part of IEC 61558 deals with the safety of ignition transformers for gas and oil burners. Ignition transformers incorporating electronic circuits are also covered by this standard. NOTE 1 Safety includes electrical, thermal, mechanical and chemical aspects. Unless otherwise specified, from here onward, the term transformer covers ignition transformers for gas and oil burners. This part applies to fixed single-phase air-cooled (natural or forced) associated dry-type transformers used in the ignition systems of gas and oil burners. The windings may be encapsulated or non-encapsulated. The rated supply voltage does not exceed 1 000 V a.c., and the rated supply frequency and the internal operational frequency do not exceed 500 Hz. The rated short-circuit output current does not exceed 500 mA a.c. The no-load output voltage or the rated output voltage does not exceed 15 000 V a.c. This part is not applicable to external circuits and their components intended to be connected to the input and output terminals or socket-outlets of the transformers. Transformers covered by this part are used in applications where double or reinforced insulation between circuits is not required by the installation rules or by the end product standard.

This International Standard deals with safety aspects of power  transformers, power supplies, reactors and similar products  such as electrical, thermal and mechanical safety. This  standard covers the following types of dry-type transformers,  power supplies, including switch mode power supplies, and  reactors, the windings of which may be encapsulated or non- encapsulated : a) Stationary or portable, single-phase or poly- phase, air-cooled (natural or forced), isolating and safety  isolating transformers, independent or associated, not forming a  part of distribution networks and with the following  characteristics: - rated supply voltage not exceeding 1 000 V  a.c.; - rated supply frequency not exceeding 500 Hz; and  complying with the following values, unless otherwise specified  in the relevant part 2: . for isolating transformers: - rated output  for single phase transformers, not exceeding 25 kVA, and for  poly-phase transformers not exceeding 40 kVA. - no-load  output voltage and the rated output voltage exceeding 50 V a.c.,  and not exceeding 500 V a.c, or 1 000 V a.c. to be in  accordance with the National Wiring Rules or for a special  application. for safety isolating transformers: - rated output for  single phase transformers not exceeding 10 kVA, and for poly- phase transformers not exceeding 16 kVA. - no-load output  voltage and the rated output voltage not exceeding 50 V a.c.  between conductors, or between any conductor and protective  earth.

EN following parallel vote * Issued by BTTF 64-1 superseded by TC 96 disbanded by 114 BT * Partly supersedes EN 60742:1995 (Chapter III, section 2)

EN following parallel vote * Issued by BTTF 64-1 superseded by TC 96 disbanded by 114 BT

This part of IEC 61558 deals with the safety of variable transformers for general applications and power supply units incorporating variable transformers for general applications.
Variable transformers incorporating electronic circuits are also covered by this document.
NOTE 1 Safety includes electrical, thermal, mechanical and chemical aspects.
Unless otherwise specified, from here onward, the term transformer covers variable transformers for general applications and power supply units incorporating variable transformers for general applications.
For power supply units (linear) this document is applicable. For switch mode power supply units, IEC 61558-2-16 is applicable together with this document. Where two requirements are in conflict, the most severe take precedence.
This document does not apply to transformers covered by IEC 60076-11.
This document is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent or associated variable dry-type transformers.
- variable auto-transformers;
- variable separating transformers;
- variable isolating transformers;
- variable safety isolating transformers.
The windings can be encapsulated or non-encapsulated.
The rated supply voltage does not exceed 1 000 V AC and the rated supply frequency and the internal operational frequencies do not exceed 500 Hz.
The rated output does not exceed:
- 40 kVA for single-phase variable auto-transformers;
- 200 kVA for poly-phase variable auto-transformers;
- 1 kVA for single-phase variable separating transformers;
- 5 kVA for poly-phase variable separating transformers;
- 25 kVA for single-phase variable isolating transformers;
- 40 kVA for poly-phase variable isolating transformers;
- 10 kVA for single-phase variable safety isolating transformers;
- 16 kVA for poly-phase variable safety isolating transformers.
This document is applicable to variable transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer.
NOTE 2 Transformers intended to supply distribution networks are not included in the scope.
[...]

This part of IEC 61558 deals with safety of isolating transformers for medical IT systems for the supply of medical locations.
NOTE 1 Safety includes electrical, thermal and mechanical aspects.
Unless otherwise specified, from here onward, the term transformer covers isolating transformers for medical IT systems for the supply of medical locations.
This document is applicable to isolating transformers, single-phase or three-phase, air-cooled (natural or forced) dry-type transformers for the supply of medical IT system for group 2 medical locations, designed to be permanently connected to the fixed wiring and intended to form the medical IT system on the secondary side. The windings can be encapsulated or non encapsulated.
NOTE 2 IT systems are defined in IEC 60364-1.
The installation rules for medical IT system for group 2 medical locations are covered by IEC 60364-7-710.
Transformers covered by this document are intended for medical IT systems for the supply of medical locations. All other transformers or equipments connected downstream from the transformer are not covered by this document.
The rated supply voltage does not exceed 1 000 V AC. The rated supply frequency and internal operational frequency do not exceed 500 Hz.
The rated output does not be less than 0,5 kVA and does not exceed 10 kVA for single-phase and three-phase transformers for medical IT system for group 2 medical locations.
This document may be applicable to isolating transformers intended to supply other medical installations that are not group 2 medical locations without limitation of the rated output subject to an agreement between the purchaser and the manufacturer.
NOTE 3 Transformers intended to supply distribution networks other than medical IT systems are not included in the scope.
The no-load output voltage and the rated output voltage does not exceed 250 V AC for single-phase or three-phase transformer (phase-to-phase voltage).
This document does not cover power supply units and is not intended to be used in conjunction with IEC 61558-2-16 for switch mode power supply units.
This document is not applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers.
Transformers covered by this document are used in applications where double or reinforced insulation between circuits is required by the installation rules or by the appliance specification.
NOTE National installation rules of some countries have different or additional requirements listed in Annex C of IEC 60364-7-710:2021.
Attention is drawn 193 to the following:
- for transformers intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.);
- measures to protect the enclosure and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing;
- the different conditions for transportation, storage, and operation of the transformers;
- additional requirements in accordance with other appropriate standards and national rules may be applicable to transformers intended for use in special environments.
This GROUP SAFETY PUBLICATION focusing on SAFETY guidance is primarily intended to be used as a PRODUCT SAFETY STANDARD for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products similar to those mentioned in the scope of this GROUP SAFETY PUBLICATION, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.
One of the RESPONSIBILITIES of a TC is, wherever applicable, to make use of BSPs and/or GSPs in the preparation of its publications.

D114/118: CLC/TC 96 disbanded

D114/118: CLC/TC 96 disbanded * Partly supersedes EN 60742:1995 (Chapter III, section 4)

Former EN 50278

EN following parallel vote * D114/118: CLC/TC 96 disbanded

EN following parallel vote * Issued by BTTF 64-1 superseded by TC 96 disbanded by 114 BT * Partly supersedes EN 60742:1995 (Chapter I)

EN following parallel vote * D114/118: CLC/TC 96 disbanded