ISO 16653-2:2021

Overview

ISO 16653-2:2021 - Mobile elevating work platforms (MEWPs) with non-conductive (insulating) components - specifies design, calculations, safety requirements and test methods for MEWPs that include dielectric/insulating parts. Intended to be used in conjunction with ISO 16368, this part addresses MEWPs that provide electrical protection through non-conductive boom or chassis insulating systems for voltages encountered in distribution systems up to 46 kV. It covers requirements from structural design and stability through pre‑service examinations, dielectric and electrical testing, marking, and maintenance.

Key topics and requirements

• Design & calculations: Structural design checks and application of stability criteria for MEWPs with insulating components.
• Material and construction: Requirements for non‑conductive platform materials, insulating liners and dielectric components consistent with the manufacturer's identification plate.
• Electrical requirements: Definition of electrical insulation level, use of lower test electrode systems, and chassis insulating system considerations to limit phase‑to‑earth exposure.
• Testing & verification: Dielectric and electrical tests, manufacturing and design checks, initial inspection before first use, and periodic electrical confirmation tests.
• Safety procedures: Pre‑start inspections, annual mechanical and electrical inspections, test equipment guidance, and procedures for modifications or alterations.
• Hazard assessment: Annex A lists significant hazards specific to MEWPs with insulating components and methods to eliminate or reduce risk.
• Scope limits: Not applicable to equipment intended for live working (see IEC 61057); insulation capability limited to distribution system voltages up to 46 kV.

Keywords: ISO 16653-2, MEWPs, non-conductive components, insulating boom, dielectric testing, chassis insulating system, electrical insulation level.

Practical applications

• Ensures safe design and certification of MEWPs used near electrical distribution equipment (up to 46 kV) where inadvertent contact above an insulating boom may occur.
• Guides manufacturers on dielectric component specification, testing protocols and marking requirements.
• Helps fleet owners, safety managers and maintenance teams implement inspection, test intervals and recordkeeping for insulating MEWPs.
• Assists certifying bodies and procurement teams in verifying compliance for machines used in utility, construction or maintenance operations near energized systems.

Who uses this standard

• MEWP manufacturers and design engineers
• Test laboratories and conformity assessment bodies
• Maintenance personnel, safety managers, and operators
• Purchasers, asset managers and regulators in utilities and construction

Related standards

• ISO 16368 - General MEWP design, calculations and safety requirements
• ISO 18893 - MEWP safety principles, inspection, maintenance and operation
• IEC 61057 - Live working - insulating aerial devices
• ISO 12100 - General machinery safety and risk assessment

This summary helps engineers, safety officers and procurement specialists quickly understand the scope, technical focus and practical uses of ISO 16653-2:2021 when specifying or managing MEWPs with insulating components.