1、UL 1128 STD-UL 1128-ENGL 1777 W 9275775 0703021 972 W Underwriters Laboratories Inc., Northbrook, Illinois * (847) 272-88 Melville, New York (51 6) 271 -6200 Santa Clara, California * (408) 965-2400 Research Triangle Park, North Carolina. (919) 549-14W Camas, Washingtona(360) 8175500 Underwriters La
2、boratories Inc., founded in 1894, is chartered as a not-for-profit organization without capital stock, under the laws of the State of Delaware, to establish, maintain, and operate laboratories for the examination and testing of devices, systems and materials to determine their relation to hazards to
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6、t organization dedicated to public safety and committed to quality service - STD-UL LL28-ENGL 1997 = 9275795 0703022 809 September 25,1997 - UL 1128 trl Underwriters Laboratories Inc. (UL) 333 Pfingsten Road Northbrook, IL 60062-2096 UL Standard for Safety Marine Blowers, UL 128 for Third Edition, D
7、ated September 25, 1997 As indicated on the title page (page I), this UL Standard for Safety has been adopted by the Department of Defense. 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 respec
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22、ect, except for those paragraphs, sections, tables, figures, andlor 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 are located after the St
23、andard, and are preceded by a “SUPERSEDED REQUIREMENTS“ notice.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 applicant specifically
24、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 the effective date, and un
25、derstanding of this should be signified in writing. Copyright 1997 Underwriters Laboratories Inc. SEPTEMBER 25, 1997 I UL 1128 Standard for Marine Blowers First Edition - August, 1977 Second Edition - September, 1988 Third Edition September 25, 1997 An effective date included as a note immediately f
26、ollowing certain requirements is one established by Underwriters Laboratories Inc. The Department of Defense (DoD) has adopted UL 1128 on April 7, 1988. The publication of revised pages or a new edition of this standard will not invalidate the DoD adoption. Revisions of this standard will be made by
27、 issuing revised or additional pages bearing their date of issue. A UL Standard is current only if it incorporates the most recently adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements. ISBN 0-7629-0218-3 COPYRIGHT 1977, 1997
28、 UNDERWRITERS LABORATORIES INC. STD*UL 1128-ENGL 1797 9 7275775 0703025 518 D 2 MARINE BLOWERS . UL 1128 SEPTEMBER 25. 1997 CONTENTS FOREWORD INTRODUCTION I Scope . 5 2 Glossary 5 3 Components . 6 4 Units of Measurement 6 CONSTRUCTION 5 Enclosures and Guards . 7 6 Materials . 9 7 Protection Against
29、Corrosion . 9 8 Current-Carrying Parts . 9 9 Wiring 10 1 O Field-Wiring Connections 10 11 Strain Relief . 11 12 Motor Protection 11 13 Insulating Material . 12 14 Switches and Controllers 12 PERFORMANCE 15 General 12 16 Input Test . 13 17 Humidity Exposure Test 13 18 Vibration Test 13 19 Shock Test
30、13 20 Temperature Tests 14 21 Stray Current Leakage Test 16 22 Ignition-Protection Test . 16 23 Blower Capacity (Calibration) Test . 16 24 Locked-Rotor Test . 17 25 Fuse Protection Test . 18 26 Switch Overload Test 18 27 Strain Relief Test . 19 28 Salt Spray Corrosion Test . 19 29 Polymeric Material
31、s Tests . 19 30 Permanence of Marking Test . 20 RATING 31 General 20 STD-UL L22A-ENGL 1997 9275795 0703112b 454 D SEPTEMBER 25, 1997 MARINE BLOWERS - UL 1128 3 MARKING 32 General _. INSTALLATION AND OPERATING INSTRUCTIONS . 20 33 General 21 STD-UL LIZA-ENGL 1797 7275795 0703027 390 4 MARINE BLOWERS
32、- UL 1128 SEPTEMBER 25,1997 FOREWORD A. This Standard contains basic requirements for products covered by Underwriters Laboratories Inc. (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
33、sound engineering principles, research, records of tests and field experience, and an appreciation of the problems of manufacture, installation, and use derived from consultation with and information obtained from manufacturers, users, inspection authorities, and others having specialized experience
34、. They are subject to revision as further experience and investigation may show is necessary or desirable. B. The observance of the requirements 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 te
35、xt of this Standard will not necessarily be judged to comply with the Standard if, when examined and tested, it is found to have other features which impair the level of safety contemplated by these requirements. D. A product employing materials or having forms of construction differing from those d
36、etailed in the requirements of this Standard may be examined and tested according to the intent of the requirements and, if found to be substantially equivalent, may be judged to comply with the Standard. E. UL, in performing its functions in accordance with its objectives, does not assume or undert
37、ake to discharge any responsibility of the manufacturer or any other party. The opinions and findings of UL represent its professional judgment 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
38、 responsible to anyone for the use of or reliance upon this Standard by anyone. UL shall not incur any obligation or liability for damages, 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 S
39、tandards of UL are inherently hazardous and adequate safeguards for personnel and property shall be employed in conducting such tests. STD-UL 1128-ENGL 1997 = 7275775 0703028 227 SEPTEMBER 25,1997 MARINE BLOWERS - UL 1128 5 INTRODUCTION 1 Scope I. 1 These requirements cover electrically operated blo
40、wers, rated less than 50 volts direct current (dc), of the centrifugal axial flow and propeller types intended to be used on board a vessel of any size. The blowers are intended to provide mechanical ventilation for engine compartments, galleys, and similar areas. 1.2 The blowers covered by these re
41、quirements are intended for installation in accordance with the applicable requirements of the Standard for Fire Protection of Pleasure and Commercial Motor Craft, NFPA 302; and the United States Coast Guard. 1.3 These requirements do not cover blowers intended for use in hazardous locations aboard
42、inspected vessels subject to United States Coast Guard regulations. 1.4 These requirements cover ignition-protected blowers that may be required on boats under 65 feet (19.8 m) in length. 1.5 These requirements cover blowers intended for continuous duty 1.6 A combination pump and blower is judged ac
43、cording to these requirements and the requirements for marine electrically operated pumps for nonflammable liquids, UL 11 13. 1.7 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this Standard, and that in
44、volves a risk 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, comp
45、onents, materials, 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
46、this Standard. 2 Glossary 2.1 For the purpose of this standard, the following definitions apply. 2.2 CONTINUOUS DUTY BLOWER - A blower that can operate continuously at a voltage of 120 percent of its rated nominal voltage. 2.3 DESIGN VOLTAGE - A voltage of 113.3 percent of the rated nominal voltage
47、of the blower STD-UL LLZB-ENGL 1797 m 7275795 0703029 Zb3 W 6 MARINE BLOWERS - UL 1128 SEPTEMBER 25, i997 2.4 IGNITION-PROTECTED BLOWER - A blower constructed so that: a) A flammable hydrocarbon mixture surrounding the blower will not be ignited if a normally occurring electrical arc,spark, or heat
48、source ignites a flammable hydrocarbon mixture inside the blower; b) The electrical arc, spark, or heat source has insufficient electrical or heat energy to ignite the flammable mixture; or c) The source of ignition is hermetically sealed from the surrounding mixture. An ignition-protected blower do
49、es not necessarily comply with the requirements for an explosion-proof device as applied to U. S. Coast Guard inspected vessels or as defined by the National Electrical Code, ANSVNFPA 70-1996, Errata Note No. .l. 2.5 NOMINAL SUPPLY VOLTAGES - Commonly available storage battery voltages; for example, 6, 12, 24, and 32 volts dc. 2.6 NORMAL HAND TOOLS - Any standard American or metric wrench straight or cross-point screwdriver, and standard hexagonal wrench. 3 Components 3.1 Except as indicated in 3.2, a component of a product covered by this standard shall compl
