Presentation is loading. Please wait.

Presentation is loading. Please wait.

Compliance With Resolution 0859 – Safety of Persons Underwriters Laboratories Inc. March 2008 Refrigerators, Freezers and Combination of Refrigerator-Freezers.

Similar presentations


Presentation on theme: "Compliance With Resolution 0859 – Safety of Persons Underwriters Laboratories Inc. March 2008 Refrigerators, Freezers and Combination of Refrigerator-Freezers."— Presentation transcript:

1 Compliance With Resolution 0859 – Safety of Persons Underwriters Laboratories Inc. March 2008 Refrigerators, Freezers and Combination of Refrigerator-Freezers

2 SAFETY REQUIREMENT COMPARISON Resolution #0859, NTC 2183 and 2252 –IEC , Household and Similar Electrical Appliances – Safety – Part 1: General requirements –IEC , Particular requirements for refrigerating appliances, ice-cream appliances and ice-makers ANSI/UL 250, Household Refrigerators and Freezers (also designated CAN/CSA C22.2 No. 63)

3 SAFETY OBJECTIVE The NTC (and IEC) Standards and UL Standard all address: –Electrical Shock Hazards –Casualty / Mechanical Hazards –Fire Hazards –User Markings and Instructions “The fundamental objective of the herein Technical Regulation is to establish ways to warranty the safety of persons, preventing risks from electric sources, such as electrocution of Refrigerators, Freezers, combination of Refrigerators-Freezers for domestic use.” (Resolution 0859, Art. 2)

4 SCOPE COMPARISON Res / NTC 2253 (IEC ) Less than 250V, 1 ph Household Refrigerators, Freezers and Combination Compression and Absorption Types Flammable Refrigerants ANSI/UL 250 Less than 250V Household Refrigerators, Freezers and Combination Compression and Absorption Types Flammable Refrigerants ANSI/UL Standard is applicable by Scope

5 REQUIRED TESTS (Res. 0859) Protection against access to live parts –Section 8 (NTC), Section 4.4 (ANSI/UL) Protection against excessive temperatures –Section 11 (NTC), Sections 8.6, 8.9, 9.17 (ANSI/UL) Leakage current and electric strength –Sections 13, 16 (NTC), Sections 8.3, 8.4, 8.8 (ANSI/UL) Earthing –Section 27 (NTC), Sections 4.9, 9.15, 10.3 (ANSI/UL) ANSI/UL Standard is applicable by Technical Requirement

6 OTHER TESTS IN COMMON # Input (S10 / S8.5) Abnormal/Fan Failure (S19 / S8.11) Compressor Locked Rotor (S19 / UL984) Flammable Refrigerant Tests (S22 / SSA) Door Opening Force (S22 / S8.28) Resistance to Moisture (S15 / S8.4, 8.13, 8.21) Stability (S20, S8.14) ANSI/UL Standard is applicable by Technical Requirement # “In Common” doesn’t mean identical IEC / UL Standard Sections – (Sx/Sx)

7 GENERAL REQUIREMENTS IN COMMON # Markings/Instructions (S7 / S11) Electrical Protection (S8 / S4.4) Mechanical Protection (S20, S30 / S4.2, 4.3, 4.5, 4.6, S7) Supply/Internal Wiring (S23, 25 / S4.9, 4.10) Screws and Connections (S28 / S4.9, 5.2, 9.15, 10.3) Separation of Circuits (S29 / S4.12) Motor Overload Protection (S19, 24 / S5.7) Resistance to Rusting (S31 / S4.1, 4.9) ANSI/UL Standard is applicable by Technical Requirement # “In Common” doesn’t mean identical

8 Historical / Experience Influence –Construction and Building Practice –Safety Incidents –U.S. Legal System Components –End product vs end product and component requirements Creepage / Clearance Distances –Material specific vs material independent Ignition Source –Glow wire vs open flame Parts Subject to Pressure –ISO 5149 vs prescriptive design and performance tests Factory Surveillance –Informative vs mandatory GENERAL REQUIREMENT DIFFERENCES Same 120V, 60Hz electrical source! Different route but same destination - safety ANSI/UL Standard is applicable by Technical Requirement

9 TEST METHOD DIFFERENCES Cord Anchorage –Tugging pull vs static pull force Stability –Details of loading Ground Path Resistance –Calculate from current flow vs prescriptive design and factory production test Moisture Resistance –IP ratings, details of overflow / spill, humidity conditions Enclosure Impact –Impact hammer vs ball impact Ambient –Climatic class Conductor Flexing –Endurance cycles ANSI/UL Standard is applicable by Technical Requirement Different route but same destination - safety

10 ANSI/UL ONLY TESTS Strength of Refrigerant Containing Parts Static Load Component Restraint Glass Strength Door Hinge Strength Door Cycling Before Latch Release ANSI/UL Standard exceeds the Technical Requirement

11 MANDATORY SURVEILLANCE Unannounced Factory Inspection –Each production facility –Minimum quarterly 100% Production Line Testing –Dielectric voltage withstand –Ground continuity –Refrigerant leakage Annual Testing –Polymeric materials Component Surveillance ANSI/UL Standard is applicable by Surveillance Requirement

12 CONCLUSION ANSI/UL 250 covers refrigerators, freezers and combination products addressed by Res ANSI/UL 250 addresses all NTC (IEC) technical requirements –Some requirements are not identical –Such requirements achieve same safety objective ANSI/UL 250 has additional requirements that exceed NTC technical requirements UL Listed products are subject to mandatory surveillance Resolution 0859 is fulfilled by UL Listed products complying with ANSI/UL 250


Download ppt "Compliance With Resolution 0859 – Safety of Persons Underwriters Laboratories Inc. March 2008 Refrigerators, Freezers and Combination of Refrigerator-Freezers."

Similar presentations


Ads by Google