1、STD-UL 1120-ENGL 1997 9275795 070755b 3b5 BI UL 1120 - - -_ ISBN 0-7629-0217-5 Marine Engine Ignition Systems and Components STD-UL LL2-ENGL 1777 H 7275775 0707557 2TL Northbrook, Illinois * (847) 272-8800 Underwriters Laboratories Inc. Mekille, MewYorkm(516) 2714200 Santa Clara, California (408) 98
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7、tandard for Safety Marine Engine Ignition Systems and Components, UL 1120 for Third Edition, Dated September 4, 1997 The master for this Standard at ULs Northbrook Office is the official document insofar as it relates to a UL service and the compliance of a product with respect to the requirements f
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22、 Standard are now in effect, except for those paragraphs, sections, tables, figures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date
23、are located after the Standard, and are preceded by a ”SUPERSEDED REQUIREMENTS” notice. New product submittals made prior to a specified future effective date will be judged under all of the requirements in this Standard including those requirements with a specified future effective date, unless the
24、 applicant specifically requests that the product be judged under the current requirements. However, if the applicant elects this option, it should be noted that compliance with all the requirements in this Standard will be required as a condition of continued Listing and Follow-Up Services after th
25、e effective date, and understanding of this should be signified in writing. Copyright 1997 Underwriters Laboratories Inc. SEPTEMBER 4,1997 1 UL 1120 Standard for Marine Engine Ignition Systems and Components First Edition - September, 1977 Second Edition - 1988 Third Edition September 4, 1997 An eff
26、ective date included as a note immediately following certain requirements is one established by Underwriters Laboratories inc. Revisions of this standard will be made by issuing revised or additional pages bearing their date of issue. A UL Standard is current only if it incorporates the most recentl
27、y adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements. ISBN 0-7629-0217-5 COPYRIGHT 1977, 1997 UNDERWRITERS LABORATORIES INC. - - _. - _ - ._ - STD-UL LLZD-ENGL L777 9275775 07075bL 722 5 - _ _ - - _ _ MARINE ENGINE IGNITION
28、SYSTEMS AND COMPONENTS - UL 1120 SEPTEMBER 4,1997 No Text on This Page SEPTEMBER 4,1997 MARINE ENGINE IGNITION SYSTEMS AND COMPONENTS - UL 1120 3 CONTENTS FOREWORD INTRODUCTION I Scope . 5 2 Glossary 5 3 Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、 . . . . . . . . . 5 CONSTRUCTION 4 Distributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . 6 5 High-Voltage Connections . . . . . . . . . . . . . . . . . . . , . . , . . . . . . . . . . . . . . . . . . . . . . 6 6 Materials . . .
30、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . 6 7 Enclosures 7 8 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . 7 PERFORMANCE 9 General 7 10 Low Ambient Temperature
31、 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 11 High Ambient Temperature Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 12 Dielectric Voltage-Withstand Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、. . . . . . . . 9 13 Vibration Test . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 14 Shock Test . 9 15 lgnition-Protection Test . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . , . . . . . . 1 O 16 Chemical Resi
33、stance Test . . . . . . . . . . , . . . . . . . . . . . . . , . . . . . . . . . . . , . . . . . . 10 17 Salt-Spray Corrosion Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . 10 18 Permanence of Marking Tests . . . . . . . . . . . . . . . . . . . . . . . . .
34、. . . . . . . . . . . . . . . IO MARKING 19 General 11 - _- - STD-UL 1120-ENGL 1777 B 7275775 07075b3 5T5 W _ _ _-_ 4 MARINE ENGINE IGNITION SYSTEMS AND COMPONENTS - UL 1120 SEPTEMBER 4,1997 FOREWORD A. This Standard contains basic requirements for products covered by Underwriters Laboratories Inc.
35、(UL) under its Follow-Up Service for this category within the limitations given below and in the Scope section of this Standard. These requirements are based upon sound engineering principles, research, records of tests and field experience, and an appreciation of the problems of manufacture, instal
36、lation, and use derived from consultation with and information obtained from manufacturers, users, inspection authorities, and others having specialized experience. They are subject to revision as further experience and investigation may show is necessary or desirable. B. The observance of the requi
37、rements of this Standard by a manufacturer is one of the conditions of the continued coverage of the manufacturers product. C. A product which complies with the text of this Standard will not necessarily be judged to comply with the Standard if, when examined and tested, it is found to have other fe
38、atures which impair the level of safety contemplated by these requirements. D. A product employing materials or having forms of construction differing from those detailed in the requirements of this Standard may be examined and tested according to the intent of the requirements and, if found to be s
39、ubstantially equivalent, may be judged to comply with the Standard. E. UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The opinions and findings of UL represent its professional ju
40、dgment given with due consideration to the necessary limitations of practical operation and state of the art at the time the Standard is processed. UL shall not be responsible to anyone for the use of or reliance upon this Standard by anyone. UL shall not incur any obligation or liability for damage
41、s, including consequential damages, arising out of or in connection with the use, interpretation of or reliance upon this Standard. F. Many tests required by the Standards of UL are inherently hazardous and adequate safeguards for personnel and property shall be employed in conducting such tests. SE
42、PTEMBER 4,1997 MARINE ENGINE IGNITION SYSTEMS AND COMPONENTS - UL 1120 5 INTRODUCTION I scope I. 1 These requirements cover battery-supplied marine engine ignition systems and components operating with an input voltage of less than 50 volts. These requirements also cover magneto ignition systems. 1.
43、2 The products covered by these requirements are those required to be ignition-protected by U. S. Coast Guard regulations as specified in 33 CFR 183.410. 1.3 The components and systems covered by these requirements are intended for installation and use in accordance with the applicable requirements
44、of the U. S. Coast Guard, and the Fire Protection Standard for Pleasure and Commercial Motor Craft, ANSVNFPA 302. 1.4 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this Standard, and that involves a ris
45、k of fire, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as required to maintain the level of safety as originally anticipated by the intent of this Standard. A product whose features, characteristics, components, mate
46、rials, or systems conflict with specific requirements or provisions of this Standard is not judged to comply with this Standard. Where appropriate, revision of requirements are proposed and adopted in conformance with the methods employed for development, revision, and implementation of this Standar
47、d. 2 Glossary 2.1 For the purpose of this standard, the following definitions apply. 2.2 ENGINE IGNITION SYSTEM - A combination of components used on an internal combustion engine to supply a high voltage at each spark plug at a precise time in the operating cycle. 2.3 IGNITION-PROTECTED - Construct
48、ed so that: a) A flammable hydrocarbon mixture surrounding a system or component is not ignited if a normally occurring electrical arc, spark, or heat source ignites a flammable hydrocarbon mixture inside the system or component; b) The electrical arc, spark, or heat source has insufficient electric
49、al or heat energy to ignite the flammable mixture; or c) The source of ignition is hermetically sealed from the surrounding mixture. An ignition-protected product does not necessarily comply with the requirements for an explosion-proof product as applied to U. S. Coast Guard inspected vessels or as defined by the National Electrical Code, ANSVNFPA 70-1996, Errata Notice No. 1. 2.4 PRODUCT - A component of an ignition system other than high-voltage wire; for example, a distributor, coil,
