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ELECTRICAL PRODUCT SAFETY Simon Fraser University School of Engineering Science

ELECTRICAL PRODUCT SAFETY Simon Fraser University School of Engineering Science. Ken Rutledge CSA International. ELECTRICAL PRODUCT SAFETY. WHY?. ELECTRICAL PRODUCT SAFETY. PURPOSE public safety government requirement liability – mfr / retail / user / etc marketing and . . . .

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ELECTRICAL PRODUCT SAFETY Simon Fraser University School of Engineering Science

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  1. ELECTRICAL PRODUCT SAFETY Simon Fraser UniversitySchool of Engineering Science Ken RutledgeCSA International

  2. ELECTRICAL PRODUCT SAFETY WHY?

  3. ELECTRICAL PRODUCT SAFETY PURPOSE • public safety • government requirement • liability – mfr / retail / user / etc • marketing • and . . . .

  4. ELECTRICAL PRODUCT SAFETY BECAUSE! Someone will find a way to use your product in a way that you didn’t intend it to be used

  5. STANDARDS WHY? • Public / Consumer Safety • Consistency – competitors / countries • Compatibility – communication / inter- connection • Global Markets • Risk mitigation

  6. STANDARDS • Standards used to evaluate products for hazards • Hazards may be unique to class of product. ie: electro-medical products 2-part series • part-1 general requirements • 50+ ‘part 2’ product-specific requirements • CSA 2500 published standards • 350+ electrical / electronic

  7. STANDARDS STANDARDS DEVELOPMENT • Written by consensus • Representation from: • industry • standards committees • academics • special interest groups

  8. STANDARDS ELECTRICAL / ELECTRONIC • industrial / commercial • consumer • information technology • distribution • electro-medical

  9. STANDARDS HARMONIZED STANDARDS • International Electrotechnical Commission - IEC • International Adoption • National Standards with differences • Global Market • Reduced compliance costs

  10. HAZARDS TYPES OF HAZARD • fire • electric shock • energy • physical • essential performance • or . . .

  11. HAZARDS . . . a complete lack of common sense

  12. HAZARDS AVAILABLE CURRENT / POWER household mains branch supply: • 120V, 15A nominal • can deliver 30A / 2m before breaker trip • up to 20kA momentary fault • T-slot receptacles – 40A / 2m

  13. HAZARDS TYPICAL LIMITS FOR HAZARDS • Fire: Power > 15W = potential fire hazard • Electric Burn: 0.45µC @ > 60V = hazardous charge • Physical Burn: • Metalic: 75C • Polymeric: 95C • Secondary hazard

  14. HAZARDS TYPICAL LIMITS FOR HAZARDS • SHOCK - Current > 0.5mA = reaction • SHOCK - Current > 10mA = can’t let go • SHOCK – Current > 0.01mA patient contact • Physiology controlled by electrical impulses • Conflicting impulses can cause fibrillation or arrest

  15. HAZARDS ESSENTIAL PERFORMANCE (medical) • Non-critical function: - Stereo display 60db but actual 54db • Critical Function: - Ventilator delivery - Defibrillator impulse - ECG display

  16. COMPLIANCE STRATEGIES FOR COMPLIANCE • Design compliance into product • Test before applying for evaluation • Preliminary consultation • Risk Management

  17. COMPLIANCE STRATEGIES FOR COMPLIANCE • Separately approved components • External approved power supply • Fault protection • Redundant protection

  18. CERTIFICATION PURPOSE • Independent compliance evaluation by an accredited 3rd party • Required by local regulators • Access to international markets • On-going conformity assessment • Marketing

  19. CERTIFICATION PRODUCT EVALUATION • Physical examination • Testing • Normal operation • Fault conditions • Documentation • Descriptive Report for inspections • Certificate and product listing for client

  20. CERTIFICATION FOLLOW-UP • Manufacturing Inspections • Re-Examination • Annual fees

  21. CERTIFICATION ELECTROMAGNETIC COMPATIBILITY • Mandatory • Industry Canada • US FCC • International • Harmonized

  22. INTERNATIONAL CB SCHEME • International agreement • Harmonized standards • Common report format • Issue local certification mark • Global Market • Reduced compliance costs

  23. INTERNATIONAL CE MARK • European Union countries • Product specific Directives • Electronic: Low Voltage Directive • Safety and EMC • Self-Declaration

  24. INTERNATIONAL WEEE DIRECTIVE • Waste Electrical and Electronic Equipment • EU Member countries • Landfill content • Producer responsible for recycling costs • Manufacture with ‘friendly’ materials • Will become CE Mark requirement

  25. ELECTRICAL SAFETY COMPLIANCE PURPOSE • public safety • government requirement • liability • marketing • and . . .

  26. ELECTRICAL SAFETY COMPLIANCE You know they’re out there . . .

  27. ELECTRICAL SAFETY COMPLIANCE Questions? Ken Rutledge CSA International

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