ISO 284-2025 PDF

Full title and description

St ISO 284-2025 — Conveyor belts — Electrical conductivity — Specification and test method. This International Standard specifies requirements and a test method for the electrical conductivity (maximum electrical resistance) of heavy-duty conveyor belts to ensure sufficient conductivity to prevent hazardous electrostatic charge accumulation during service.

Abstract

ISO 284:2025 sets out the maximum allowable electrical resistance for conveyor belts and details the test procedure used to measure that resistance. The standard is intended to ensure belts are sufficiently conductive to avoid the build-up of static electricity in normal use. It explicitly states that it is not applicable to light conveyor belts covered by ISO 21183‑1, whose static electrical properties are measured by ISO 21178.

General information

• Status: Published (International Standard).
• Publication date: June 4, 2025 (ISO edition 5).
• Publisher: International Organization for Standardization (ISO); identical/adopted editions available from national bodies (e.g., BSI, SIS).
• ICS / categories: 53.040.20 (conveyors / materials handling).
• Edition / version: Edition 5 (2025).
• Number of pages: 6 pages (typical ISO electronic publication length).

Scope

This document specifies the maximum electrical resistance of conveyor belts and the corresponding test method required to verify compliance. The test and limits are intended to ensure that conveyor belts used in industrial material‑handling applications do not accumulate hazardous levels of electrostatic charge during normal service. The standard excludes light conveyor belts covered by ISO 21183‑1; those are measured using ISO 21178.

Key topics and requirements

• Definition of the electrical resistance measurement method for conveyor belts (test specimen preparation, conditioning and measurement technique).
• Specification of maximum allowable electrical resistance values (compliance criteria to prevent static charge build-up) as applicable to heavy‑duty belts.
• Requirements for test equipment, test conditions (temperature/humidity) and reporting of results.
• Guidance on applicability and exclusions (not applicable to light conveyor belts measured by ISO 21178).
• Reporting and documentation requirements to demonstrate conformity (test report content, identification of belt construction and materials used in the test).

Typical use and users

Manufacturers of conveyor belts and belt compounds, third‑party testing laboratories, safety and compliance engineers, procurement/specification teams in mining, quarrying, bulk material handling and processing plants, and standards committees responsible for materials‑handling safety. The standard is used to specify acceptance criteria during procurement and to verify manufacturing and in‑service safety performance.

Related standards

Relevant related standards include ISO 21183‑1 and ISO 21178 (light conveyor belts and static electrical properties), earlier editions of ISO 284 (e.g., ISO 284:2012 which this edition replaces), and harmonized regional/adopted editions (EN ISO 284 / national adoptions). These documents are often referenced together when specifying belt electrical properties and test methods.

Keywords

conveyor belt; electrical conductivity; electrical resistance; antistatic; static electricity; test method; materials handling; ISO 284:2025.

FAQ

Q: What is this standard?

A: ISO 284:2025 is an International Standard that specifies the maximum electrical resistance and a test method for conveyor belts to ensure they dissipate static charge safely.

Q: What does it cover?

A: It covers the measurement procedure, test conditions and maximum allowable electrical resistance values for conveyor belts used in typical industrial material‑handling applications; it excludes light conveyor belts covered by ISO 21183‑1.

Q: Who typically uses it?

A: Belt manufacturers, testing laboratories, safety/compliance engineers, procurement/specification teams in industries using conveyor systems (mining, bulk handling, ports, cement, aggregate), and standards bodies.

Q: Is it current or superseded?

A: ISO 284:2025 is the current published edition (edition 5, published June 2025) and replaces earlier editions such as ISO 284:2012.

Q: Is it part of a series?

A: It is a stand‑alone ISO standard for electrical conductivity of conveyor belts but is commonly used alongside related ISO standards on conveyor belt properties and testing (for example ISO 21183‑1 and ISO 21178 for light belts). National and regional adoptions (EN ISO 284 / BS EN ISO 284, etc.) are also available.

Q: What are the key keywords?

A: Conveyor belts, electrical resistance, electrical conductivity, antistatic, test method, static discharge, materials handling.