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Electrical regulations and standards

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Contents


Regulations

In most countries, electrical installations shall comply with more than one set of regulations, issued by National Authorities or by recognized private bodies. It is essential to take into account these local constraints before starting the design.
These regulations may be based on national standards derived from the IEC 60364: Low-voltage electrical installations.


Standards

This Guide is based on relevant IEC standards, in particular IEC 60364. IEC 60364 has been established by engineering experts of all countries in the world comparing their experience at an international level. Currently, the safety principles of IEC 60364 series, IEC 61140, 60479 series and IEC 61201 are the fundamentals of most electrical standards in the world (see table below).


IEC 60038 IEC standard voltages
IEC 60076-2 Power transformers - Temperature rise for liquid immersed transformers
IEC 60076-3 Power transformers - Insulation levels, dielectric tests and external clearances in air
IEC 60076-5 Power transformers - Ability to withstand short-circuit
IEC 60076-10 Power transformers - Determination of sound levels
IEC 60146-1-1 Semiconductor converters - General requirements and line commutated converters - Specifications of basic requirements
IEC 60255-1 Measuring relays and protection equipment - Common requirements
IEC 60269-1 Low-voltage fuses - General requirements
IEC 60269-2 Low-voltage fuses - Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) - Examples of standardized systems of fuses A to K
IEC 60282-1 High-voltage fuses - Current-limiting fuses
IEC 60287-1-1 Electric cables - Calculation of the current rating - Current rating equations (100% load factor) and calculation of losses - General
IEC 60364-1 Low-voltage electrical installations - Fundamental principles, assessment of general characteristics, definitions
IEC 60364-4-41 Low-voltage electrical installations - Protection for safety - Protection against electric shock
IEC 60364-4-42 Low-voltage electrical installations - Protection for safety - Protection against thermal effects
IEC 60364-4-43 Low-voltage electrical installations - Protection for safety - Protection against overcurrent
IEC 60364-4-44 Low-voltage electrical installations - Protection for safety - Protection against voltage disturbances and electromagnetic disturbances
IEC 60364-5-51 Low-voltage electrical installations - Selection and erection of electrical equipment - Common rules
IEC 60364-5-52 Low-voltage electrical installations - Selection and erection of electrical equipment - Wiring systems
IEC 60364-5-53 Low-voltage electrical installations - Selection and erection of electrical equipment - Isolation, switching and control
IEC 60364-5-54 Low-voltage electrical installations - Selection and erection of electrical equipment - Earthing arrangements and protective conductors
IEC 60364-5-55 Low-voltage electrical installations - Selection and erection of electrical equipment - Other equipment
IEC 60364-6 Low-voltage electrical installations - Verification
IEC 60364-7-701 Low-voltage electrical installations - Requirements for special installations or locations - Locations containing a bath or shower
IEC 60364-7-702 Low-voltage electrical installations - Requirements for special installations or locations - Swimming pools and fountains
IEC 60364-7-703 Low-voltage electrical installations - Requirements for special installations or locations - Rooms and cabins containing sauna heaters
IEC 60364-7-704 Low-voltage electrical installations - Requirements for special installations or locations - Construction and demolition site installations
IEC 60364-7-705 Low-voltage electrical installations - Requirements for special installations or locations - Agricultural and horticultural premises
IEC 60364-7-706 Low-voltage electrical installations - Requirements for special installations or locations - Conducting locations with restrictive movement
IEC 60364-7-708 Low-voltage electrical installations - Requirements for special installations or locations - Caravan parks, camping parks and similar locations
IEC 60364-7-709 Low-voltage electrical installations - Requirements for special installations or locations - Marinas and similar locations
IEC 60364-7-710 Low-voltage electrical installations - Requirements for special installations or locations - Medical locations
IEC 60364-7-711 Low-voltage electrical installations - Requirements for special installations or locations - Exhibitions, shows and stands
IEC 60364-7-712 Low-voltage electrical installations - Requirements for special installations or locations - Solar photovoltaic (PV) power supply systems
IEC 60364-7-713 Low-voltage electrical installations - Requirements for special installations or locations - Furniture
IEC 60364-7-714 Low-voltage electrical installations - Requirements for special installations or locations - External lighting installations
IEC 60364-7-715 Low-voltage electrical installations - Requirements for special installations or locations -
Extra-low-voltage lighting installations
IEC 60364-7-717 Low-voltage electrical installations - Requirements for special installations or locations -
Mobile or transportable units
IEC 60364-7-718 Low-voltage electrical installations - Requirements for special installations or locations - Communal facilities and workplaces
IEC 60364-7-721 Low-voltage electrical installations - Requirements for special installations or locations - Electrical installations in caravans and motor caravans
IEC 60364-7-729 Low-voltage electrical installations - Requirements for special installations or locations - Operating or maintenance gangways
IEC 60364-7-740 Low-voltage electrical installations - Requirements for special installations or locations - Temporary electrical installations for structures, amusement devices and booths at fairgrounds, amusement parks and circuses
IEC 60364-7-753 Low-voltage electrical installations - Requirements for special installations or locations - Heating cables and embedded heating systems
IEC60364-8-1 Low-voltage electrical installations - Energy efficiency
IEC 60446 Basic and safety principles for man-machine interface, marking and identification - Identification of equipment terminals, conductors terminations and conductors
IEC 60479-1 Effects of current on human beings and livestock - General aspects
IEC 60479-2 Effects of current on human beings and livestock - Special aspects
IEC 60479-3 Effects of current on human beings and livestock - Effects of currents passing through the body of livestock
IEC 60529 Degrees of protection provided by enclosures (IP code)
IEC 60644 Specification for high-voltage fuse-links for motor circuit applications
IEC 60664 Insulation coordination for equipment within low-voltage systems - all parts
IEC 60715 Dimensions of low-voltage switchgear and controlgear. Standardized mounting on rails for mechanical support of electrical devices in switchgear and controlgear installations.
IEC 60724 Short-circuit temperature limits of electric cables with rated voltages of 1 kV (Um = 1.2 kV) and 3 kV (Um = 3.6 kV)
IEC 60755 General requirements for residual current operated protective devices
IEC 60787 Application guide for the selection of high-voltage current-limiting fuses-link for transformer circuit
IEC 60831-1 Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1000 V - Part 1: General - Performance, testing and rating - Safety requirements - Guide for installation and operation
IEC 60831-2 Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1000 V - Part 2: Ageing test, self-healing test and destruction test
IEC 60947-1 Low-voltage switchgear and controlgear - General rules
IEC 60947-2 Low-voltage switchgear and controlgear - Circuit-breakers
IEC 60947-3 Low-voltage switchgear and controlgear - Switches, disconnectors, switch-disconnectors and fuse-combination units
IEC 60947-4-1 Low-voltage switchgear and controlgear - Contactors and motor-starters - Electromechanical contactors and motor-starters
IEC 60947-6-1 Low-voltage switchgear and controlgear - Multiple function equipment - Transfer switching equipment
IEC 61000 series Electromagnetic compatibility (EMC)
IEC 61140 Protection against electric shocks - common aspects for installation and equipment
IEC 61201 Use of conventional touch voltage limits – Application guide
IEC/TR 61439-0 Low-voltage switchgear and controlgear assemblies - Guidance to specifying assemblies
IEC 61439-1 Low-voltage switchgear and controlgear assemblies - general rules
IEC 61439-2 Low-voltage switchgear and controlgear assemblies - power switchgear and controlgear assemblies
IEC 61439-3 Low-voltage switchgear and controlgear assemblies - distribution boards intended to be operated by ordinary persons (DBO)
IEC 61439-4 Low-voltage switchgear and controlgear assemblies - Particular requirements for assemblies for construction sites (ACS)
IEC 61439-5 Low-voltage switchgear and controlgear assemblies - Assemblies for power distribution in public networks
IEC 61439-6 Low-voltage switchgear and controlgear assemblies - Busbar trunking systems (busways)
IEC 61557-1 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - General requirements
IEC 61557-8 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Insulation monitoring devices for IT systems
IEC 61557-9 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Equipment for insulation fault location in IT systems
IEC 61557-12 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Performance measuring and monitoring devices (PMD)
IEC 61558-2-6 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V - Particular requirements and test for safety isolating transformers and power supply units incorporating isolating transformers
IEC 61643-11 Low-voltage surge protective devices - Surge protective devices connected to low-voltage power systems - Requirements and test methods
IEC 61643-12 Low-voltage surge protective devices - Surge protective devices connected to low-voltage power distribution systems - Selection and application principles
IEC 61643-21 Low voltage surge protective devices - Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
IEC 61643-22 Low-voltage surge protective devices - Surge protective devices connected to telecommunications and signalling networks - Selection and application principles
IEC 61921 Power capacitors - Low-voltage power factor correction banks
IEC 62271-1 High-voltage switchgear and controlgear - Common specifications
IEC 62271-100 High-voltage switchgear and controlgear - Alternating-current circuit-breakers
IEC 62271-101 High-voltage switchgear and controlgear - Synthetic testing
IEC 62271-102 High-voltage switchgear and controlgear - Alternating current disconnectors and earthing switches
IEC 62271-103 High-voltage switchgear and controlgear - Switches for rated voltages above 1 kV up to and including 52 kV
IEC 62271-105 High-voltage switchgear and controlgear - Alternating current switch-fuse combinations for rated voltages above 1 kV up to and including 52 kV
IEC 62271-200 High-voltage switchgear and controlgear - Alternating current metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
IEC 62271-202 High-voltage switchgear and controlgear - High-voltage/low voltage prefabricated substations
IEC 62305-1 Protection against lightning - Part 1: General principles
IEC 62305-2 Protection against lightning - Part 2: Risk management
IEC 62305-3 Protection against lightning - Part 3: Physical damage to structures and life hazard
IEC 62305-4 Protection against lightning - Part 4: Electrical and electronic systems within structures