IEC 60050-195:1998

Overview

IEC 60050-195:1998 is an International Electrotechnical Vocabulary (IEV) standard specifically dedicated to earthing and protection against electric shock. Published by the International Electrotechnical Commission (IEC), it serves as a fundamental horizontal standard aligning with IEC Guide 108. This part of the IEV provides crucial terminology and definitions related to electrical earthing, safety measures, and protection concepts against electric shock in multiple languages including English, French, Arabic, German, Spanish, Italian, Japanese, Polish, Portuguese, and Swedish.

The standard is an authoritative resource designed to support consistent and clear understanding of electrical safety concepts worldwide, improving interoperability, safety protocols, and compliance across electrical installations and equipment.

Key Topics

IEC 60050-195:1998 is organized into six detailed sections covering core concepts and technical terminology:

• Fundamental Concepts: Defines key terms such as reference earth (earth potential reference point), electric contact, local earth, electric shock, protection against electric shock, conductive part, conductor, and equipotentiality.

• Electrical Installations and Equipment: Terminology related to earthing systems and electrical components designed to mitigate electrical hazards.

• Electric Shock and Threshold Currents: Description of physiological effects caused by electric currents, standardizing terms for shock severity and human safety thresholds.

• Operation: Concepts related to the functioning of earthing and protective systems during use.

• Voltages and Currents: Terms specifying conditions, measurement, and characteristics of electrical potentials and currents related to earthing and shock protection.

• Protective Measures for Electrical Safety: Terminology concerning protective bonding, equipotential bonding, and other safety measures reducing risks associated with electric shock.

The vocabulary ensures clarity on proper definitions to aid engineers, safety professionals, and regulators in the implementation and evaluation of electrical safety systems.

Applications

IEC 60050-195:1998 is essential for professionals involved in:

• Electrical Installation Design: Applying consistent earthing and protective system terminology when designing electrical installations for buildings, infrastructure, and industrial equipment.

• Safety Compliance and Risk Management: Ensuring terminology uniformity in safety documentation, risk assessments, and compliance reporting related to electric shock hazards.

• Product Development and Testing: Utilizing correct definitions for developing and testing earthing devices, protective equipment, and electrical components conforming to international safety standards.

• Training and Education: Providing a standardized vocabulary for educational materials and training programs for electricians, engineers, and safety inspectors.

• International Standardization: Harmonizing national and regional standards with IEC definitions, facilitating consistent regulatory frameworks worldwide.

Related Standards

IEC 60050-195:1998 complements several related international publications, including:

• IEC 60050 (General Electrotechnical Vocabulary): Providing overarching terminology for electrical engineering beyond earthing and electric shock.

• IEC 60027 Series: Letter symbols to be used in electrotechnical documentation, useful for graphical and literal symbols referenced in protection systems.

• IEC 60417: Graphical symbols for use on electrical equipment, supporting clear labeling of protective and earthing devices.

• IEC 60617: Graphical symbols for electrical diagrams integrating protective circuit components.

• ISO/IEC Guide 51: Definition and principles of safety applied within this vocabulary.

These complementary standards ensure users have comprehensive resources for designing, analyzing, and maintaining electrical safety standards globally.

Keywords: IEC 60050-195, international electrotechnical vocabulary, earthing, electric shock protection, electrical safety, conductive part, equipotential bonding, electrical installations, electric shock thresholds, protective measures against electric shock, IEC standards, electrical terminology, electrical safety standards.