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 60051 series Direct acting indicating analogue electrical measuring instruments and their accessories

IEC 60071-1 Insulation co-ordination - Definitions, principles and rules

IEC 60076-1 Power transformers - General

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 60076-7 Power transformers - Loading guide for oil-immersed power transformers

IEC 60076-10 Power transformers - Determination of sound levels

IEC 60076-11 Power transformers - Dry-type transformers

IEC 60076-12 Power transformers - Loading guide for Dry-type power transformers

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 60269-2 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 60445 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 61936-1 Power installations exceeding 1 kV a.c. - Part 1: Common rules

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

IEC 62586-2 Power quality measurement in power supply systems - Part 2: Functional tests and uncertainty requirements

IEC TS 62749 Assessment of power quality - Characteristics of electricity supplied by public networks