1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 428A Electrically Operated Valves for Gasoline and Gasoline/Ethanol Blends with Nominal Ethanol Concentrations Up to 85 Percent (E0 - E85)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R
2、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Electrically Operated Valves for Gasoline and Gasoline/Ethanol Blends with Nominal Ethanol Concentrations Up to
3、85 Percent (E0 - E85), UL 428A First Edition, Dated June 4, 2015 Summary of Topics This is the rst edition of the Standard for Electrically Operated Valves for Gasoline and Gasoline/Ethanol Blends with Nominal Ethanol Concentrations Up to 85 Percent (E0 - E85), ANSI/UL 428A. The effective date for U
4、L LLC will be announced through Industry File Review Announcement Letter. The requirements are substantially in accordance with Proposal(s) on this subject dated October 17, 2014 and March 6, 2015. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or t
5、ransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tnes
6、s for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL represen
7、tative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless f
8、rom and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. JUNE 4, 2015 UL 428A tr1UL COPYRIGHTED MATERIAL NOT AUT
9、HORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 4, 2015 UL 428A tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL June 4, 2015 1 UL 428A Standard for Electrically Operated Valves for Gas
10、oline and Gasoline/ Ethanol Blends with Nominal Ethanol Concentrations Up to 85 Percent (E0 - E85) Prior to the rst edition, the requirements for the products covered by this standard were included in the Outline of Investigation for Electrically Operated Valves for Gasoline and Gasoline/Ethanol Ble
11、nds with Nominal Ethanol Concentrations Up to 85 Percent (E0 - E85), UL 428A. First Edition June 4, 2015 This ANSI/UL Standard for Safety consists of the First Edition. The most recent designation of ANSI/UL 428A as an American National Standard (ANSI) occurred on June 4, 2015. ANSI approval for a s
12、tandard does not include the Cover Page, Transmittal Pages and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http
13、:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRIT
14、ERS LABORATORIES INC. ANSI/UL 428A-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 4, 2015 UL 428A 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONT
15、ENTS INTRODUCTION 1 Scope .6 2 General 7 2.1 Components .7 2.2 Units of measurement .7 2.3 Undated references .7 2.4 Automotive-fuel valve .7 3 Glossary .8 CONSTRUCTION 4 General .10 5 Assembly .10 5.1 All valves .10 5.2 Safety valves .11 5.3 Class 2 (low-voltage) valves 11 6 Materials 11 6.1 Metall
16、ic materials 11 6.2 Nonmetallic materials 14 6.3 Casting impregnation materials 17 6.4 Internal parts uid compatibility 17 6.5 Insulating Materials 17 6.6 Blending options 19 7 Fluid Connections .20 8 Seals and Stuff Boxes .20 9 Springs .21 10 Diaphragms .21 11 Operating Mechanisms .21 12 Current-Ca
17、rrying Parts 22 13 Enclosures 22 13.1 General .22 13.2 Metallic enclosures .23 13.3 Polymeric enclosures .26 13.4 Enclosure conduit connection 27 13.5 Openings 28 13.6 Accessibility of live parts 30 13.7 Screens and expanded metal 32 13.8 Rainproof, raintight, and watertight enclosures .33 13.9 Corr
18、osion protection 33 13.10 Safety valves .35 14 Field Wiring Connections 35 14.1 General .35 14.2 Leads .35 14.3 Field Wiring Terminals 36 14.4 Wiring space .38 15 Internal Wiring .38 16 Grounding .39 17 Bonding .39 18 Protection of Users and Service Personnel 40 JUNE 4, 2015 UL 428A 3UL COPYRIGHTED
19、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 19 Transformers, Coils and Motors 40 20 Switches 41 21 Spacings 41 21.1 General .41 21.2 High-voltage circuits 42 21.3 Low-voltage circuits and low-voltage safety-control circuits 45 21.4 Other than safety-co
20、ntrol circuits .46 22 Alternate Spacing Clearances and Creepage Distances .46 23 Separation of Circuits .47 23.1 General .47 23.2 Barriers .48 PERFORMANCE 24 General 48 25 Input Test 51 26 Temperature Test .51 27 Long Term Exposure Test .55 27.1 General .55 27.2 Samples 55 27.3 Method .56 27.4 Resul
21、ts .56 28 Operation Test .57 29 Torque Test 58 29.1 All valves 58 29.2 Safety valves 59 30 External Leakage Test 59 31 Seat Leakage Test 59 32 Endurance Test 60 33 Vibration Test Safety Valves .60 34 Hydrostatic Strength Test .60 35 Dielectric Voltage-Withstand Test 61 36 Increased Potential Test .6
22、2 37 Burnout Test .62 38 Breakdown of Component Test 63 39 Rain Test 64 40 Hosedown Test 67 41 Metallic Coating Thickness Test .67 42 Blending Cycling Test .68 43 Printed Wiring Board Abnormal Operation Test .69 44 Sight Glass Impact Test .70 45 Sight Glass Temperature Shock Test .70 46 Clamped Insu
23、lating Joints in Lieu of Spacings 71 MANUFACTURING AND PRODUCTION 47 General 73 ELECTRICAL RATINGS 48 Details .74 MARKING JUNE 4, 2015 UL 428A 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 49 Details .74 50 Cautionary Markings 76 51 Visib
24、ility and Permanence of Markings 77 51.1 General .77 51.2 Unusual-condition exposure test .77 SUPPLEMENT SA - MARINE USE ELECTRICALLY OPERATED SHUT-OFF VALVES FOR GASOLINE AND GASOLINE/ETHANOL BLENDS WITH NOMINAL ETHANOL CONCENTRATIONS UP TO 85 PERCENT (E0 E85) SA1 Scope SA1 SA2 Installation and Ope
25、rating Instructions SA1 SA3 General SA1 SA4 Materials .SA2 SA5 Electrical Connections SA2 SA6 General SA2 SA7 Vibration Test .SA3 SA8 Shock Test .SA3 SA9 Ignition Protection Test .SA4 SA10 Fire Test SA4 SA11 Operation and Temperature Tests SA6 SA11.1 Low temperature .SA6 SA11.2 Abnormal operation SA
26、6 SA11.3 Normal operation .SA7 SA12 Details SA7 SUPPLEMENT SB - Test Fluids SB.1 Details .SB1 JUNE 4, 2015 UL 428A 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover electrically operated gener
27、al purpose and safety valves rated 600 volts or less and intended for the control of the uids specied in 1.2. Electrically operated valves, other than automotive fuel valves, covered by these requirements are intended to be used in other than hazardous locations as dened in accordance with the Natio
28、nal Electrical Code, NFPA 70. 1.2 Electrically operated valves for use in dispensing devices are intended for use with one or more of the following: a) Gasoline formulated in accordance with the Standard Specication for Automotive Spark Ignition Fuel, ANSI/ASTM D4814; b) Gasoline/ethanol blends with
29、 nominal ethanol concentrations up to 25 percent ethanol (E25), consisting of gasoline formulated in accordance with the Standard Specication for Automotive Spark Ignition Fuel, ANSI/ASTM D4814, when blended with denatured fuel ethanol formulated to be consistent with the Standard Specication for De
30、natured Fuel Ethanol for Blending With Gasoline For Use as Automotive Spark Ignition Engine Fuel, ANSI/ASTM D4806; or c) Gasoline/ethanol blends with nominal ethanol concentrations above 25 percent formulated in accordance with the Standard Specication in item (b) or formulated in accordance with th
31、e Standard Specication for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark Ignition Engines, ANSI/ASTM D5798, as applicable. 1.3 These requirements cover valves whose coils are powered by a Class 2 (low-voltage) source. Valves incorporating a high-voltage transformer with a low-voltage second
32、ary as an integral part of the valve assembly, are also covered by these requirements. 1.4 These requirements do not cover valves for use with uids other than as specied in 1.2. 1.5 These requirements do not cover valves employing electrical parts, including coils, switch contacts and resistance ele
33、ments, located in the ammable gas containing compartment of a valve. Valves constructed as such shall comply with the requirements in the Standard for Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, and III, Division 1, Hazardous (Classied) Locations, UL 913. JUNE 4, 20
34、15 UL 428A 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a valve covered by this standard shall comply with the requirements for that component. 2.1.2 A component
35、 is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.1.3 A component shall be used in accordance with its r
36、ating established for the intended conditions of use. 2.1.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be
37、 used only under those specic conditions. 2.2 Units of measurement 2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.2.2 Unless indicated otherwise all voltage and current values mentioned in this standard are root-mean-s
38、quare (rms). 2.3 Undated references 2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 2.4 Automotive-fuel valve 2.4.1 An automotive fuel valve shall comply with the requir
39、ements applicable to safety valves in the Standard for Electrically Operated Valves, UL 429. JUNE 4, 2015 UL 428A 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Glossary 3.1 For the purpose of this standard, the following denitions apply
40、. 3.2 AUTOMOTIVE-FUEL VALVE An electrically operated valve rated for use with a direct current (DC) circuit and intended for use as a fuel-line shutoff valve on mobile equipment. 3.3 BLENDING OPTION Dispensing devices may be provided with an option that blends two specic fuels into one fuel to be di
41、spensed. This blending occurs at the dispenser level and can be in two forms: a) Fixed blending Blending at the dispenser level that blends two specic fuels into one fuel to be dispensed, and that fuel to be dispensed is xed. For example, xed blending includes blend options where gasoline and denatu
42、red fuel ethanol can be blended to achieve E85, which is the actual dispensed fuel. b) Variable blending Blending at the dispenser level that blends two specic fuels into the fuel to be dispensed, but the fuel to be dispensed can be any of a number of previously set points. For example, variable ble
43、nding includes blend options where gasoline and E85 can be blended to achieve E40, E60, and E85 as the actual dispensed fuel. 3.4 ELECTRICAL CIRCUITS a) Class 2 Circuit A circuit involving a potential of not more than 42.4 volts peak supplied by: 1) An isolating source that complies with the require
44、ments in the Standard for Class 2 Power Units, UL 1310, or the requirements in the Standard for Low Voltage Transformers Part 1: General Requirements, UL 5085-1, and the Standard for Low Voltage Transformers Part 3: Class 2 and Class 3 Transformers, UL 5085-3 2) A dry cell battery having output char
45、acteristics no greater than those of an inherently limited Class 2 transformer; or 3) A combination of a rechargeable battery and a xed impedance or regulating network that complies with the applicable performance requirements for an inherently limited Class 2 transformer. b) Low-Voltage Circuit A c
46、ircuit involving a potential of not more than 30 volts ac (42.4 volts peak or direct current) and supplied from transformer output windings which are electrically isolated (i.e. insulated from ground). A circuit derived from a source of supply classied as a high voltage circuit, by connecting resist
47、ance in series with the supply circuit as a means of limiting the voltage and current, is not considered to be a low voltage circuit. Unless the isolating transformer is provided as part of the valve or marked per 49.7, the circuit shall be considered a high voltage circuit. c) High-Voltage Circuit
48、A circuit involving a potential of not more than 600 volts and having circuit characteristics in excess of those of a low-voltage circuit. d) Intrinsically Safe Circuit A circuit in which any spark or thermal effect produced either normally or in specied fault conditions, is incapable of causing ign
49、ition of a mixture of ammable or combustible material in air in the mixtures most easily ignited concentration under the test conditions specied in the Standard for Intrinsically Safe Apparatus and Associated Apparatus, for Use in Class I, II, and III, Division 1, Hazardous (Classied) Locations, UL 913. JUNE 4, 2015 UL 428A 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL e) Safety-Control Circuit A circuit involving
