PC 128 - Operation of electrical installations
Standardization in the field of broad (general) principles of operation of electrical installations. These operating instructions are intended to ensure that all operation of and work activity on, with, or near electrical installations can be carried out safely. These are electrical installations operating at voltage levels from and including extra-low voltage up to and including high voltage. These electrical installations are designed for the generation, transmission, conversion, distribution and use of electrical power. Some of these electrical installations are permanent and fixed, such as a distribution installation in a factory or office complex, others are temporary, such as on construction sites and others are mobile or capable of being moved either whilst energised or whilst not energised nor charged.
Opération sur les installations électriques
Normalisation dans le domaine des principes généraux de l’exploitation des installations électriques. Ces instructions de service ont pour but de garantir que toutes les opérations et activités de travail sur, ou à proximité des installations électriques peuvent être effectuées en toute sécurité. Il s'agit d'installations électriques fonctionnant à des niveaux de tension compris entre la très basse tension jusqu'à la haute tension. Ces installations électriques sont conçues pour la production, la transmission, la conversion, la distribution et l'utilisation de l'énergie électrique. Certaines de ces installations électriques sont permanentes et fixes, telle qu’une installation de distribution dans une usine ou un complexe de bureaux, d'autres sont temporaires, tels que des chantiers de construction, et d'autres encore sont mobiles ou susceptibles d'être déplacées sous tension ou hors tension et sous charge.
General Information
Frequently Asked Questions
PC 128 is a Technical Committee within the International Electrotechnical Commission (IEC). It is named "Operation of electrical installations" and is responsible for: Standardization in the field of broad (general) principles of operation of electrical installations. These operating instructions are intended to ensure that all operation of and work activity on, with, or near electrical installations can be carried out safely. These are electrical installations operating at voltage levels from and including extra-low voltage up to and including high voltage. These electrical installations are designed for the generation, transmission, conversion, distribution and use of electrical power. Some of these electrical installations are permanent and fixed, such as a distribution installation in a factory or office complex, others are temporary, such as on construction sites and others are mobile or capable of being moved either whilst energised or whilst not energised nor charged. This committee has published 1 standards.
PC 128 develops IEC standards in the area of Information technology. The scope of work includes: Standardization in the field of broad (general) principles of operation of electrical installations. These operating instructions are intended to ensure that all operation of and work activity on, with, or near electrical installations can be carried out safely. These are electrical installations operating at voltage levels from and including extra-low voltage up to and including high voltage. These electrical installations are designed for the generation, transmission, conversion, distribution and use of electrical power. Some of these electrical installations are permanent and fixed, such as a distribution installation in a factory or office complex, others are temporary, such as on construction sites and others are mobile or capable of being moved either whilst energised or whilst not energised nor charged. Currently, there are 1 published standards from this technical committee.
The International Electrotechnical Commission (IEC) is the world's leading organization for the preparation and publication of international standards for electrical, electronic, and related technologies. Founded in 1906, the IEC provides a global platform for companies, industries, and governments to meet, discuss, and develop the international standards they require.
A Technical Committee (TC) in IEC is a group of experts responsible for developing international standards in a specific technical area. TCs are composed of national member body delegates and work through consensus to create standards that meet global industry needs. Each TC may have subcommittees (SCs) and working groups (WGs) for specialized topics.
IEC TS 63527:2025 is applicable to the safe management and operation of and work activity on, with, or near electrical installations operating at voltage levels from and including extra-low voltage up to and including high voltage.
This latter term includes those levels commonly referred to as medium and extra-high voltage.
These electrical installations are designed for the generation, transmission, conversion, distribution and use of electrical power. Some of these electrical installations are permanent and fixed, such as a distribution installation in a factory or office complex, others are temporary, such as on construction sites, and others are mobile or capable of being moved either whilst energized or whilst not energized nor charged. Examples are electrically driven excavating machines in quarries or open-cast coal sites.
This document sets out the requirements for the safe management and operation of and work activity on, with, or near these electrical installations. The requirements apply to all operational, working and maintenance procedures. They apply to all non-electrical work such as building work near to overhead lines or underground cables as well as electrical work , when there is a risk of electrical danger.
This document does not apply to ordinary persons when using installations and equipment, provided that the installations and equipment comply with relevant standards and are designed and installed for use by ordinary persons.
This document has not been developed specifically to apply to the electrical installations listed below. However, if there are no other rules or procedures, the principles of this document could be applied to them:
– on any aircraft and hovercraft moving under its own power, (international aviation laws can apply);
– on any sea going ship moving under its own power, or under the direction of the master, (international marine laws can apply);
– electronic telecommunications and information systems;
– electronic instrumentation, control and automation systems;
– at coal or other mines;
– on off-shore installations (international marine laws can apply);
– on vehicles;
– on electric traction systems;
–on experimental electrical research work.
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