Elektrotechnika

Oblast zaměření: Elektrická relé
Komise : IEC/TC 95 (Measuring relays and protection equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.01.2022
Zobraz více Zobraz méně
 

This part of the IEC 60255 series describes the product safety requirements for measuring relays and protection equipment having a rated AC voltage up to 1 000 V, or a rated DC voltage up to 1 500 V. Above these limits, IEC 60664-1 is applicable for the determination of clearance, creepage distance and withstand test voltage.

This standard specifies essential safety requirements to minimize the risk of fire and hazards caused by electric shock or injury to the user and property, and this standard is intended to describe only product safety requirements, functional performance of the equipment is not covered.

This standard covers all the ways in which the equipment may be mounted and used in cabinets, racks and panels. This standard also applies to auxiliary devices such as shunts, series resistors, transformers, etc., that are used in conjunction with measuring relays and protection equipment and are tested together.

Ancillary equipment such as network switches used in conjunction with measuring relays and protection equipment may need to comply with additional safety requirements.

This standard does not specify the implementation of individual equipment, circuits and components.  Equipment shall be designed to meet the requirements of all relevant clauses of the standard and tested to prove compliance where necessary. Type testing alone (as section 9 type tests) does not form a complete safety assessment and does not guarantee that the correct components / materials have been used, this can only be achieved by assessment against all clauses of this standard.

This standard applies to equipment designed to be safe at least under the following environmental conditions

indoor use;

altitude up to 2 000 m, in accordance with IEC 60255-1;

rated ambient temperature range, in accordance with IEC 60255-1;

maximum external relative humidity, in accordance with IEC 60255‑1;

operating range of auxiliary energizing voltage in accordance with IEC 60255-1;

applicable overvoltage category;

applicable pollution degree of the intended environment (pollution degree 2 in most cases).

Oblast zaměření: Elektrická relé
Komise : IEC/TC 95 (Measuring relays and protection equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.01.2022
Zobraz více Zobraz méně
 

General

This part of the IEC 60255 series specifies the requirements for electromagnetic compatibility for measuring relays and protection equipment. It is applicable to measuring relays and protection equipment and combinations of devices to form schemes for power system protection including the control, monitoring, communication and process interface equipment used with those systems.

Tests specified in this document are not required for equipment not incorporating electronic circuits, for example electromechanical relays.

The requirements specified in this document are applicable to measuring relays and protection equipment in a condition representative of how new equipment is provided by the manufacturer. All tests specified are type tests only.

Emission

This document specifies limits and test methods, for measuring relays and protection equipment in relation to electromagnetic emissions which might cause interference in other equipment.

These emission limits represent electromagnetic compatibility requirements and have been selected to ensure that the disturbances generated by measuring relays and protection equipment, operated normally in substations and power plants, do not exceed a specified level which could prevent other equipment from operating as intended.

Test requirements are specified for the enclosure, auxiliary power supply ports, input/output ports, signal/control ports and wired network ports.

Immunity

This document specifies the immunity test requirements for measuring relays and protection equipment in relation to continuous and transient, conducted and radiated disturbances, including electrostatic discharges.

These test requirements represent the electromagnetic compatibility immunity requirements and have been selected so as to ensure an adequate level of immunity for measuring relays and protection equipment, operated normally in substations and power plants.

NOTE 1 Product safety considerations are not covered in this document.

NOTE 2  In special cases, situations will arise where the levels of disturbance could exceed the levels specified in this document, for example where a hand-held transmitter or a mobile telephone is used close to measuring relays and protection equipment. In these instances, special precautions and procedures could have to be employed.

Oblast zaměření: Elektrická relé
Komise : IEC/TC 95 (Measuring relays and protection equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.01.2022
Zobraz více Zobraz méně
 

This part of IEC 60255 specifies common rules and requirements applicable to measuring relays and protection equipment including any combination of equipment to form a distributed protection scheme for power system protection such as control, monitoring and process interface equipment to obtain uniformity of requirements and tests. The standards covers main technologies used today other emerging technologies will present specific EMC and safety issues but the philosophy in this document should be applied.

All measuring relays and protection equipment used for protection within the power system environment are covered by this document. Other documents in this series can define their own requirements which in such cases take precedence. The typical locations for measuring relays and protection equipment are where protection of electrical equipment is required: generally power stations, substations and industrial locations.

Measuring relays and protection equipment installed in special applications (marine, railways, aerospace, explosive atmospheres, computers, etc.) could be enhanced by additional requirements required by that application.

Komise : IEC/SC 59L (Small household appliances)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 4.02.2022
Zobraz více Zobraz méně
 

This International Standard specifies test methods to measure the performance of electrically operated spray seats for household and similar use.

This standard applies to spray seats including tank-type spray seats, instantaneous-type spray seats and combination-type spray seats.

This document does not apply to the electrically operated spray seats that are intended for medical and/or assistive functions

NOTE: This International Standard does not specify acoustical noise requirements for electrical spray seats.  Acoustical noise measurements are specified in IEC 60704-1 and IEC 60704-2-x.

Komise : IEC/SC 59L (Small household appliances)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 4.02.2022
Zobraz více Zobraz méně
 

This International Standard specifies test methods to measure the performance of electrically operated spray seats for household and similar use.

This standard applies to spray seats including tank-type spray seats, instantaneous-type spray seats and combination-type spray seats.

This document does not apply to the electrically operated spray seats that are intended for medical and/or assistive functions

NOTE: This International Standard does not specify acoustical noise requirements for electrical spray seats.  Acoustical noise measurements are specified in IEC 60704-1 and IEC 60704-2-x.

Komise : IEC/TC 31 (Electrical apparatus for explosive atmospheres)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 11.02.2022
Zobraz více Zobraz méně
 

Amendment 

Oblast zaměření: Výkonová elektronika
Komise : IEC/SC 22F (Power electronics for electrical transmission and distribution systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 11.02.2022
Zobraz více Zobraz méně
 

This part of IEC 60700 specifies the service conditions, the definitions of essential ratings and characteristics of thyristor valves utilized in line commutated converters with three-phase bridge connections to realize the conversion from AC to DC and vice versa for high voltage direct current (HVDC) power transmission applications. It is applicable for air insulated, liquid cooled and indoor thyristor valves.

Oblast zaměření: Světelné zdroje a svítidla
Komise : IEC/SC 34A (Electric light sources)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.02.2022
Zobraz více Zobraz méně
 

This part of IEC 63356 specifies design parameters and design values of a LED light source or related interface characteristics.

Note 1:  Interface characteristics can cover interfaces between LED light source and luminaire/controlgear or LED light source and additional attachments.

Note 2:  Interfaces can be related to for example electrical, mechanical, or optical aspects.

This part does not cover interchangeability between products from different LED light source manufacturers.

Note 3:  Interchangeability is covered by Part 1.

Lamp caps and lampholders specified in the IEC 60061 series are not in the scope of this document.

Compliance criteria relating to parameters in this document are covered by IEC 63220 for safety, or IEC 63221 for performance.

Oblast zaměření: Světelné zdroje a svítidla
Komise : IEC/SC 34A (Electric light sources)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.02.2022
Zobraz více Zobraz méně
 

This part of IEC 63356 specifies datasheets of LED lamps and LED modules with a series of parameters per datasheet for a specific LED light source that enables interchangeability between products from different LED light source manufacturers.

Compliance criteria relating to datasheet parameters in this document are covered by IEC 63220 for safety, or IEC 63221 for performance.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/TC 23 (Electrical accessories)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 1.03.2022
Zobraz více Zobraz méně
 

This document applies to two-wire, up to five-wire installation couplers, with or without earthing contact, if provided, with a rated voltage up to and including 500 V AC or DC and a rated connecting capacity up to and including 10 mm2 and a rated current not exceeding 32 A for permanent connection in electrical installations. Installation couplers with additional contacts for voltages other than mains voltages are outside the scope of this document.

An installation coupler consists of an installation female connector and an installation male connector for permanent connection not intended to be engaged or disengaged under load nor to be engaged or disengaged other than during first installation or during reconfiguration or maintenance of the wiring system in which installation couplers have been installed. This means that installation couplers are only intended for infrequent use.

Installation couplers are not suitable for use in place of socket-outlet systems. Installation couplers are not suitable for use in place of devices for connecting luminaires (DCLs) according to IEC 61995 (all parts) or in place of luminaire supporting couplers (LSCs).

Installation couplers complying with this document are suitable for use at ambient temperatures not normally exceeding +40 °C, but their average over a period of 24 h does not exceed +35 °C, with a lower limit of the ambient air temperature of −5 °C, either for indoor or outdoor use.

NOTE 1 Additional tests for use in cold climates are under consideration.

NOTE 2 For other temperatures, necessary information can be given in the manufacturer's installation instructions.

In locations where special conditions prevail, as in ships, vehicles and the like and in hazardous locations, for example where explosions are liable to occur, special constructions can be required.

NOTE 3 Installation couplers are intended to be installed by instructed or skilled persons.

NOTE 4  As a guide to use installation coupler systems, see Annex D.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/SC 23G (Appliance couplers)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 1.03.2022
Zobraz více Zobraz méně
 

Amendment

Komise : IEC/TC 99 (Insulation co-ordination and system engineering of high voltage electrical power installations above 1,0 kV AC and 1,5 kV DC)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 1.03.2022
Zobraz více Zobraz méně
 

This standard applies to High-voltage direct current (HVDC) systems. It specifies the principles on the procedures for the determination of the specified withstand voltages, creepage distance and air clearances for the equipment and the installations of these systems.

This standard gives the insulation co-ordination principles related to line commutated converter (LCC) and voltage sourced converters (VSC) HVDC systems. The main principles of this standard also apply to other special converter configurations of LCC, such as the capacitor commutated converter (CCC) as well as the controlled series compensated converter (CSCC) etc.

This standard applies to insulation co-ordination of equipment connected between the converter AC bus (including the AC harmonic filters, the converter transformer, the circuit breakers) and the DC line side. The line and cable terminations in so far as they influence the insulation co-ordination of converter station equipment are also covered.

This standard applies only for HVDC applications in power systems and not for industrial conversion equipment. Principles and guidance given are for insulation co-ordination purposes only. The requirements for human safety are not covered by this standard.

This horizontal standard is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 108.

One of the responsibilities of a technical committee is, wherever applicable, to make use of horizontal standards in the preparation of its publications. The contents of this horizontal standard will not apply unless specifically referred to or included in the relevant publications.

Oblast zaměření: Elektrická relé
Komise : IEC/TC 94 (All-or-nothing electrical relays)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 8.03.2022
Zobraz více Zobraz méně
 

This part of the IEC 61812 series applies to time relays and coupling relays for industrial applications (e.g. control, automation, signal and industrial equipment) and for automatic electrical controls for use in, on, or in association with equipment for residential and similar use.

The term “relay” as used in this document comprises all types of relays with specified time functions and coupling relays, other than measuring relays.

This document defines type test and routine test to confirm the service condition.

Oblast zaměření: Ochrana před bleskem
Komise : IEC/TC 81 (Lightning protection)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 8.03.2022
Zobraz více Zobraz méně
 

This part of IEC 62561 specifies the requirements and tests for devices intended to count the number of lightning strikes based on the current flowing in a conductor. This conductor may be part of a lightning protection system (LPS) or connected to an SPD installation or other conductors, which are not intended to conduct a significant portion of lightning currents.

LSCs for use in hazardous atmospheres, extra requirements for the components may be necessary to be taken.

NOTE   In CENELEC countries, testing requirements of components for explosive atmosphere are specified in CLC/TS 50703-2.

Komise : IEC/SC 61B (Safety of microwave appliances for household and commercial use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 8.03.2022
Zobraz více Zobraz méně
 

This clause of Part 1 is replaced by the following.

This International Standard deals with the safety of microwave appliances intended for commercial use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances.

In general, this standard does not take into account

persons (including children) whose

physical, sensory or mental capabilities; or

lack of experience and knowledge

prevents them from using the appliance safely without supervision or instruction;

children playing with the appliance.

Appliances covered by this standard incorporate an open-ended applicator (as example an overview is given in Figure 103) for treatment of the load. They are divided into three types:

with insertion applicator, typically for moisture removal by insertion into holes in floors, walls or ceilings (an example is given in Figure 106);

with large area contacting applicator, typically for drying of floors, walls or ceilings (examples are given in Figure 104 and Figure 105);

with small area contacting applicator, typically for paint removal and spot-heating (an example is given in Figure 107).

NOTE 101 Appliances with insertion applicator and with large area contacting applicator are portable appliances. Appliances with small area contacting applicator are handheld appliances.

NOTE 102 Appliances that use non-electrical energy are within the scope of this standard. The microwave-related portion is considered motor-operated.

NOTE 103 Attention is drawn to the fact that

these appliances can radiate microwave energy outside a restricted area where they are used. The additional requirements specified by national authorities responsible for the protection for non-ionising radiation that the limit of power flux density is 10 W/m2, averaged over any time period of 6 min, outside this restricted area is taken into consideration in this standard;

these appliances are intended to exclusively treat the load in normal operation, i.e. this standard does not apply to appliances or systems employing free space microwave propagation;

for appliances intended to be used in tropical countries, special requirements can be necessary;

in many countries, additional requirements are specified by the national health authorities, and national authorities responsible for the protection of labour and for non-ionising radiation protection.

NOTE 104 This standard does not apply to

household microwave ovens, including combination microwave ovens (IEC 60335-2-25);

commercial microwave ovens with a cavity door, commercial combination microwave ovens with a cavity door and commercial microwave ovens without a cavity door and with transportation means (IEC 60335-2-90);

industrial microwave heating equipment (IEC 60519-6);

appliances for medical purposes (IEC 60601-1);

appliances and equipment for laboratory use (series of IEC 61010);

appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).

NOTE 105 Some of the specifications and tests in this standard are not applicable for other than 2 450 MHz appliances.

Komise : IEC/SC 61B (Safety of microwave appliances for household and commercial use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 8.03.2022
Zobraz více Zobraz méně
 

This clause of Part 1 is replaced by the following.

This International Standard deals with:

the safety of microwave ovens with a cavity door intended for commercial use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances;

These appliances are not intended for household and similar purposes. They are used for commercial processing of food, also in areas open to the public, for example in kitchens of restaurants, canteens, hospitals and in commercial enterprises such as bakeries and butcheries.

the safety of combination microwave ovens with a cavity door, the requirements for which are contained in Annex AA;

the safety of microwave ovens without a cavity door and with transportation means that are intended for commercial use only, for the heating of food and beverages, the requirements for which are contained in Annex BB.

Microwave ovens covered by Annex BB have transportation means for moving the load through the microwave oven. Requirements for tunnel microwave ovens and several types of microwave vending machines are covered.

This standard also deals with microwave ovens intended to be used on board ships, for which Annex EE is applicable.

NOTE 101 In Annex BB, a microwave oven without a cavity door and with transportation means is described as a microwave oven. All clauses of this standard apply to these appliances unless otherwise specified in Annex BB.

This international standard also takes into account ordinary persons having access to the removing area of the vending machine.

NOTE 102 The appliance may be built into a vending machine, in which case IEC 60335-2-75 may also be applicable.

NOTE 103 Appliances that use non-electrical energy are within the scope of this standard.

In general, this standard does not take into account

the use of appliances by young children or infirm persons without supervision;

playing with the appliance by young children.

This international standard does not take into account the use of a microwave oven without a cavity door and with transportation means by ordinary persons except in the vicinity of entrance and exit ports.

NOTE 104 The rationales for particular microwave exposure conditions and measures related to microwave energy being confined by an open structure are in Annex BB.

NOTE 105 Attention is drawn to the fact that

for appliances intended to be used in vehicles or on trains, on board ships or board aircraft, additional requirements may be necessary;

for appliances intended to be used in tropical countries, special requirements may be necessary;

in many countries, the national health authorities, the national authorities responsible for the protection of labour and similar authorities specify additional requirements;

in many countries, national authorities specify additional requirements to BB.22.119.1.

NOTE 106 This standard does not apply to

household microwave ovens including combination microwave ovens (IEC 60335-2-25);

Microwave ovens including combination microwave ovens for household use covered by IEC 60335-2-25 and used in the following environments by laymen:

staff kitchen areas in shops, offices and other working environments;

farm houses;

by clients in hotels, motels and other residential type environments;

bed and breakfast type environments.

industrial microwave heating equipment (IEC 60519-6);

appliances for medical purposes (IEC 60601);

appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).

Komise : IEC/SC 61B (Safety of microwave appliances for household and commercial use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 8.03.2022
Zobraz více Zobraz méně
 

This clause of Part 1 is replaced by the following.

This part of IEC 60335 deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V.

This standard also deals with combination microwave ovens, for which Annex AA is applicable.

This standard also deals with microwave ovens intended to be used on board ships, for which Annex BB is applicable.

Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. However, if the appliance is intended to be used professionally to process food for commercial purposes, the appliance is not considered to be for household and similar use only.

As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account

persons (including children) whose

physical, sensory or mental capabilities; or

lack of experience and knowledge

prevents them from using the appliance safely without supervision or instruction;

children playing with the appliance.

NOTE 101 Attention is drawn to the fact that

for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;

in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.

NOTE 102 This standard does not apply to

commercial microwave ovens (IEC 60335-2-90);

industrial microwave heating equipment (IEC 60519-6);

appliances for medical purposes (IEC 60601);

appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).

Oblast zaměření: Výkonové transformátory
Komise : IEC/TC 14 (Power transformers)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.03.2022
Zobraz více Zobraz méně
 

This part of IEC 60076 illustrates the procedures that should be applied to evaluate the uncertainty affecting the measurements of no-load and load losses during the routine tests on power transformers.

This document centers on measuring systems utilizing digital instruments, although the procedures can be adapted to evaluation of systems with analogue instruments where further uncertainty sources have to be taken into account.

This document describes how to determine measurement uncertainty. Information vis-à-vis judgment and traceability are given in Clauses 10.1 and 10.2 of IEC 60076-8:1997

Oblast zaměření: Elektrické kabely
Komise : IEC/TC 20 (Electric cables)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.03.2022
Zobraz více Zobraz méně
 

This part of IEC 60287 is applicable to the conditions of steady-state operation of cables at all alternating voltages, and direct voltages up to 5 kV, buried directly in the ground, in ducts, troughs or in steel pipes, both with and without partial drying-out of the soil, as well as cables in air. The term "steady state" is intended to mean a continuous constant current (100 % load factor) just sufficient to produce asymptotically the maximum conductor temperature, the surrounding ambient conditions being assumed constant.

This part provides formulae for current ratings and losses.

The formulae given are essentially literal and designedly leave open the selection of certain important parameters. These may be divided into three groups:

–   parameters related to construction of a cable (for example, thermal resistivity of insulating material) for which representative values have been selected based on published work;

–   parameters related to the surrounding conditions, which may vary widely, the selection of which depends on the country in which the cables are used or are to be used;

parameters which result from an agreement between manufacturer and user and which involve a margin for security of service (for example, maximum conductor temperature).

Oblast zaměření: Elektrické kabely
Komise : IEC/TC 20 (Electric cables)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 15.03.2022
Zobraz více Zobraz méně
 

This section of IEC 60287-1 provides a method for calculating the eddy current losses in the metallic sheaths of single-core cables arranged as a three-phase double circuit in flat formation. The sheaths are bonded at one point or are cross-bonded so that there are no significant sheath circulating currents. Where metallic sheaths are bonded at both ends there are significant circulating currents which result in a lower current-carrying capacity. A method of calculating circulating current losses for double circuits is provided in IEC 60287-1-3.

The method provides coefficients which are applied as corrections to the loss factors for the sheaths of one isolated three-phase circuit. These corrections are negligible for cables where the parameter m is less than about 0,1 ( ), which corresponds to a sheath longitudinal resistance higher than 314 mW/m at 50 Hz.

Consequently, the method should be used for most sizes of aluminium-sheathed cables, but is not required for lead-sheathed cables unless they are unusually large.

The coefficients are provided in tabular form and have been computed from fundamental formulae for sheath losses, the evaluation of which calls for expertise in computer programming which might not be readily available in general commercial situations. The development of simplified formulae for some of the tabulated coefficients is under consideration.

Losses for cables in a single circuit will be covered in IEC 60287-1-1.