Overview
IEC 60335-2-5:2012/AMD1:2018 is an important amendment to the international standard focusing on the safety of household and similar electrical appliances, specifically addressing the particular requirements for dishwashers. Published by the International Electrotechnical Commission (IEC), this amendment integrates corrections as of August 2018 to enhance safety measures related to dishwasher design and use.
The amendment ensures that dishwashers under normal operational conditions maintain electrical insulation integrity even when exposed to liquid spillage or inlet valve failures. This update is vital for manufacturers, testing organizations, and regulatory bodies aiming to comply with the highest international safety standards.
Key Topics
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Moisture Resistance Requirements
The amendment revises clause 15.2 related to moisture resistance in dishwashers. It mandates construction standards to prevent any electrical insulation deterioration due to liquid spillage during normal use, including scenarios where inlet valves fail to close.
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Spillage Test Procedures
Compliance is verified through detailed testing using a standardized spillage solution consisting of water mixed with approximately 1% sodium chloride and 0.6% non-ionic rinsing agent. The amendment specifies the chemical properties and composition of this rinsing agent to ensure test consistency globally.
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Testing Conditions for Different Dishwasher Types
The amendment outlines the test setup for dishwashers with various configurations such as built-in units with or without working surfaces:
- Appliances with a working surface are tested with the detergent solution poured to simulate spillage over controls in the most unfavorable positions.
- For built-in dishwashers without a working surface, tests include pouring the spillage solution onto a wooden work surface aligned with the appliance in both closed and partially opened door positions to simulate real-use conditions.
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Electric Strength Verification
Post-spillage, dishwashers must undergo electric strength testing to verify insulation reliability. Any reduction in clearance or creepage distances below specified values warrants corrective action.
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Updated Figures and Terminology
The amendment incorporates new figures illustrating test setups (Figures 101 and 102) and clarifies terminology changes regarding detergent and rinsing agents.
Applications
This amendment to IEC 60335-2-5 is essential for:
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Dishwasher Manufacturers
Ensuring new models meet up-to-date international safety requirements, particularly regarding moisture resistance and electrical insulation integrity.
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Certification Bodies and Test Laboratories
Applying revised testing methodologies and chemicals for assessing dishwasher compliance in line with IEC standards.
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Safety Regulators and Compliance Officers
Implementing global or national regulations harmonized with IEC safety standards helps protect consumers by reducing electrical hazards associated with dishwasher use.
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Product Designers and Engineers
Incorporating robust safety margins in dishwasher designs to cope with fault scenarios like inlet valve failures and liquid spillage.
Related Standards
- IEC 60335-1 – General safety requirements for household and similar electrical appliances.
- IEC 60335-2 Series – Part 2 standards containing particular safety requirements for various household appliances.
- IEC 60730 – Automatic electrical controls for household and similar use, relevant for dishwasher control systems.
- ISO Safety Standards for Household Appliances – Covering complementary aspects such as ergonomics and environmental considerations.
Summary
IEC 60335-2-5:2012/AMD1:2018 amendment plays a critical role in advancing dishwasher safety standards by addressing real-world moisture challenges and ensuring rigorous testing standards. Stakeholders from manufacturers to regulators benefit from clear directives that safeguard both product performance and user safety. Embracing this standard aids in product certification, enhances consumer trust, and reduces electrical hazards in household appliances.