IEC 60998-1:2002

Overview

IEC 60998-1:2002, titled "Connecting devices for low-voltage circuits for household and similar purposes - Part 1: General requirements", is an international standard developed by the International Electrotechnical Commission (IEC). This standard specifies general requirements for connecting devices used to join electrical copper conductors in low-voltage household circuits. It applies to connecting devices designed for conductors ranging from 0.2 mm² to 35 mm² (or equivalent AWG sizes), supporting rated voltages up to 1000 V AC and 1500 V DC.

IEC 60998-1 forms Part 1 of the IEC 60998 series, which covers various parts targeting specific technical and safety requirements related to household and similar low-voltage wiring devices. The 2002 edition updated and replaced the original 1990 standard, incorporating technical revisions and clarifications including the integration of interpretation notes from 2005.

Key Topics

• Scope and Application
  The standard covers connecting devices as separate entities, focused on safety and functionality when connecting multiple copper conductors in residential and similar environments. It addresses rigid or flexible conductors compliant with IEC 60228 or IEC 60344.

• General and Technical Requirements

  • Electrical rated voltage: Up to 1000 V AC (up to 1000 Hz) and 1500 V DC.
  • Conductor sizes: 0.2 mm² up to 35 mm² (and equivalent AWG sizes).
  • Mechanical stability: Ensuring reliable retention of current-carrying parts primarily through mechanical means, not reliant on grease or non-mechanical aids.
  • Protection against electric shock: Devices must meet defined safety parameters to guard users.
  • Resistance to ageing, humidity, and ingress: Durability requirements to maintain safe operation under various conditions.
  • Electrical properties: Insulation resistance, dielectric strength, and temperature rise limits for safe and efficient operation.
  • Marking and classification: Clear classification for use-cases and proper labeling for identification.
  • Compliance with electromagnetic compatibility (EMC) requirements to avoid interference.

• Testing and Certification
  The standard outlines procedures for testing the devices' mechanical strength, electrical safety, resistance to environmental factors, and thermal performance.

• Interpretation Guidance
  Clarifications on interpreting certain clauses (e.g., Clause 18 concerning the mechanical retention of components) provide practical guidance to manufacturers and testing bodies.

Applications

IEC 60998-1 is critical for manufacturers, designers, and testing laboratories involved in the production and certification of connecting devices-such as terminal blocks, connectors, and multiway terminals-used in:

• Household electrical installations
• Residential wiring devices
• Small commercial and similar low-voltage electrical circuits
• Electrical connectors compliant with North American AWG wire sizes, enhancing global applicability
• Ensuring compliance with safety, mechanical, and electrical performance in low-voltage applications

This standard benefits product developers by providing comprehensive guidelines to design devices that ensure safe and reliable electrical connections, protecting end-users from electrical shock and product failure.

Related Standards

The IEC 60998 series includes other parts that build upon the general requirements established in Part 1:

• IEC 60998-2: Specifies particular requirements for certain types of connecting devices such as connecting blocks and other specialized connectors.
• IEC 60228: Defines conductor sizes and classifications, referenced for compliance with conductor types used in IEC 60998-1.
• IEC 60344: Offers additional conductor standards referenced for compatibility.

Additionally, manufacturers often consider relevant national and regional standards for household electrical installations to ensure full regulatory compliance alongside IEC 60998-1.

Keywords: IEC 60998-1, connecting devices, low-voltage circuits, household electrical connectors, copper conductor connection standards, electrical safety, terminal blocks, IEC standard, AWG wire sizes, low-voltage wiring devices, electric shock protection, IEC 60228, IEC 60344, mechanical retention, electrical insulation, EMC requirements.