UL 1238-2015 UL Standard for Safety Control Equipment for Use with Flammable Liquid Dispensing Devices (Sixth Edition Reprint with Revisions Through and Including September 7 2016).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1238 Control Equipment for Use with Flammable Liquid Dispensing DevicesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTE

2、D MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Control Equipment for Use with Flammable Liquid Dispensing Devices, UL 1238 Sixth Edition, Dated July 10, 2015 Summary of Topics This new edition of ANSI/UL 1238 is being issued t

3、o update references to motor standards, update and clarify the Flammability Test, revise user replaceable fuse marking and to address the editorial maintenance of UL Standards for Safety. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated May 29,

4、2015. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted 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,

5、either expressed or implied, including but not limited to, the implied warranties of merchantability or tness 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 dama

6、ges arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative 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. Use

7、rs of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from 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 el

8、ectronic Standard on the purchasers computer system. JULY 10, 2015 UL 1238 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 10, 2015 UL 1238 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DI

9、STRIBUTION WITHOUT PERMISSION FROM UL July 10, 2015 1 UL 1238 Standard for Control Equipment for Use with Flammable Liquid Dispensing Devices First Edition August, 1975 Second Edition March, 1996 Third Edition September, 2001 Fourth Edition March, 2006 Fifth Edition May, 2008 Sixth Edition July 10,

10、2015 This ANSI/UL Standard for Safety consists of the Sixth Edition. The most recent designation of ANSI/UL 1238 as an American National Standard (ANSI) occurred on July 10, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date informati

11、on. 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:/. ULs Standards for Safety are copyrighted by UL. Neither a printed n

12、or 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 UNDERWRITERS LABORATORIES INC. ANSI/UL 1238-2015UL COPYRIGHTED MATERIAL NOT AUTH

13、ORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 10, 2015 UL 1238 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .6 2 General 7 2.1 Components .7 2.2 Units o

14、f measurement .7 2.3 Undated references .7 3 Glossary .8 4 Instructions .9 CONSTRUCTION 5 Frame and Enclosure 10 5.1 General 10 5.2 Covers .10 5.3 Cast metal 11 5.4 Sheet metal 12 5.5 Nonmetallic .12 5.6 Glass panels 15 5.7 Openings .15 5.8 Ventilating openings .16 5.9 Other openings .16 5.10 Wiring

15、 openings 18 5.11 Speaker openings 19 6 Raintight and Rainproof Enclosures 20 7 Operating Mechanism 21 8 Corrosion Protection .21 9 Protection of User and Service Personnel .22 10 Field Wiring Connections 22 10.1 Permanently connected devices 22 10.2 Terminal compartments .23 10.3 Wiring terminals a

16、nd leads 23 10.4 Cord- and plug-connected devices .24 11 Internal Wiring 26 11.1 General .26 11.2 Wires .26 11.3 Splices and connections 27 11.4 Interconnecting cords and cables 27 12 Grounding .28 13 Bonding of Internal Parts 29 13.1 General .29 13.2 Construction and connections 29 ELECTRICAL COMPO

17、NENTS 14 Switching Devices 30 15 Capacitors .31 16 Transformers .31 17 Motors .31 18 Heaters 32 JULY 10, 2015 UL 1238 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 19 Insulating Material 33 20 Insulating Barriers 35 21 Secondary Circuits

18、36 22 Separation of Circuits .37 23 Low-Voltage Class-2 Circuits .38 24 Limited Current Circuits 39 25 Barriers 39 26 Printed-Wiring Boards .39 SPACINGS 27 General 40 PERFORMANCE 28 General 43 28.1 Test voltage .43 28.2 Additional tests 44 29 Input Measurement Test .44 30 Output Measurement Test .44

19、 31 Maximum Voltage Output Measurement Test 45 32 Normal Temperature Test 45 33 Operation 48 34 Overload and Endurance Test 48 34.1 General .48 34.2 Overload 49 34.3 Endurance 49 35 Dielectric Voltage-Withstand Test .49 36 Aging Test .50 37 Low-Voltage Class-2 Transformer Test 50 37.1 General .50 37

20、.2 Open-circuit secondary voltage 51 37.3 Current output .51 37.4 Volt-ampere capacity .51 37.5 Burnout .52 37.6 Dielectric withstand .52 38 Limited Current Test 52 39 Nonmetallic Enclosures 53 39.1 General .53 39.2 Thermal aging conditioning 54 39.3 Flammability test .54 39.4 Elevated temperature t

21、est .55 39.5 Impact test 55 40 Snap-On Covers 56 40.1 General .56 40.2 Squeezing force test 56 40.3 Pull force test 56 40.4 Impact test of snap-on covers 56 41 Rain Test 57 42 Water Penetration Test 60 43 Component Faults 60 44 Heater Maximum Temperature Test .60 JULY 10, 2015 UL 1238 4UL COPYRIGHTE

22、D MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MANUFACTURING AND PRODUCTION LINE TESTS 45 General 61 45.1 Details 61 45.2 Production line dielectric voltage-withstand test 61 RATING 46 General 62 MARKING 47 General 62 APPENDIX A Standards for Components

23、A1 JULY 10, 2015 UL 1238 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover electrical equipment used for the control and monitoring of ammable liquid and LP-Gas dispensing devices rated 600 vo

24、lts or less. Such control equipment is intended to be installed in ordinary locations in accordance with the National Electrical Code, NFPA 70. 1.2 These requirements also cover electrical control equipment that is capable of being installed in or over a hazardous area as dened by the Flammable and

25、Combustible Liquids Code, NFPA 30. Electrical control equipment for installation in a Class I, Division 1 or Division 2 hazardous area shall comply with the applicable requirements for the Hazardous Location protection method employed. See Appendix A for a list of appropriate standards. 1.3 These re

26、quirements cover general-use eld-installed equipment. They also cover controls intended to be factory installed on or in certain devices as operating controls. Typical devices covered by these requirements include: a) Communication Units Visual, pulse, or audio devices which complies with the transm

27、ittal of data or information. Such devices include audio or visual systems between the service station attendant and the customer, and data processing systems between the service station and a remote data processing terminal. b) Control Consoles Prepay, post-pay, remote totalizing, or remote actuati

28、ng and monitoring devices located indoors or within a structure some distance from the dispensing device. c) Credit Acceptance Units Dollar bill, coin, token, pulse, or credit card activated devices which are capable of being installed on, adjacent to, or away from the dispensing device. d) Electric

29、 Computer Resets Electrically authorized or electrically operated devices which reset a mechanical computer. 1.4 These requirements do not cover safety or emergency controls which automatically or manually interrupt the operation of a dispensing device. 1.5 The term device refers to any equipment co

30、vered by this standard. 1.6 These requirements do not cover purely mechanical systems such as hose nozzle attachments and pneumatic or hydraulic actuators. JULY 10, 2015 UL 1238 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 General 2.1

31、Components 2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply with the requirements for that component. 2.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application

32、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 rating established for the intended conditions of use. 2.1.4 Specic components are incomplete in construction features or restricted

33、 in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 2.1.5 Except for portable equipment, provision shall be made for securely mounting contro

34、l equipment in position. Bolts, screws, or other parts used for mounting equipment shall be independent of those used for securing components of the equipment to the frame, base, or panel. 2.2 Units of measurement 2.2.1 Values stated without parentheses are the requirement. Values in parentheses are

35、 explanatory or approximate information. 2.2.2 Unless otherwise indicated, all voltage and current values mentioned in this standard are root-mean-square (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 interprete

36、d as referring to the latest edition of that code or standard. JULY 10, 2015 UL 1238 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 terms apply. 3.2 ABBREVIATIONS For the purpo

37、se of this standard, the following denitions apply: AC Alternating Current AWG American Wire Gage DC Direct Current GSG Galvanized Sheet Gage Hz hertz MSG Manufacturers Standard Gage NEC National Electrical Code, NFPA 70 psig Pounds per square inch gauge rms Root-mean-square 3.3 BRANCH CIRCUIT That

38、portion of the building wiring system beyond the nal overcurrent device on the power-distribution panel protecting the circuit to the eld-wiring terminals in a permanently connected device or to the receptacle outlet for cord-connected devices. 3.4 CIRCUITS, ELECTRICAL a) Class 2 (Low-Voltage) A cir

39、cuit involving a potential of not more than 42.4 volts peak supplied by: 1) An energy-limiting Class 2 transformer; 2) A nonenergy-limiting Class 2 transformer and an overcurrent protective device that has been evaluated for limiting energy to Class 2 levels; 3) The combination of an isolated transf

40、ormer secondary winding and a xed impedance or reliable regulating network which complies with the applicable performance requirements for an energy-limiting Class 2 transformer; 4) A dry cell battery having output characteristics no greater than those of an energy- limiting Class 2 transformer; or

41、JULY 10, 2015 UL 1238 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5) The combination of a rechargeable battery and a xed impedance or reliable regulating network which complies with the applicable performance requirements for an energy-

42、limiting Class 2 transformer. b) Line-Voltage Any eld connected source of supply other than battery power, nominally 50 60 Hz, 115, 208, or 230 volts, is classied as a line-voltage circuit. c) Secondary Those circuits supplied from transformer output windings which are electrically isolated, i.e., i

43、nsulated from ground. 3.5 CORD- AND PLUG-CONNECTED DEVICE A device intended for connection to the branch- circuit power line by means of a supply cord. Such a device is intended to be moved for reasons of interchange or servicing. 3.6 GENERAL PURPOSE ENCLOSURE A metallic or nonmetallic enclosure tha

44、t is not required to be explosion proof. 3.7 LIMITED CURRENT CIRCUIT A circuit which is so designed and protected that, under both normal conditions and a likely fault condition, the current which can be drawn is not at levels that are considered hazardous. See Limited Current Test, Section 38, for

45、limits. 4 Instructions 4.1 A copy of the operating and installation instructions intended to accompany each device, or equivalent information, is to be used as a reference in the examination and test of the device. For this purpose, a printed edition is not required. 4.2 The instructions shall inclu

46、de such directions and information as deemed by the manufacturer to be adequate for the proper installation, maintenance, and use of the device. 4.3 For products marked in accordance with 47.1(f)(4), the following statements shall be included in the installation instructions. a) A statement to the e

47、ffect that the equipment is to be installed and used in accordance with the National Electrical Code, NFPA 70, and the Flammable and Combustible Liquids Code, NFPA 30. b) Detailed information showing hook-up and/or ratings associated with each terminal, lead, or connector in the interconnection box

48、or other device to which eld connections are to be made. c) Information necessary to determine that the junction box in the dispenser has sufficient volume for the application. See 20.13 and 20.14 and Table 20.2 in the Standard for Power- Operated Dispensing Devices for Petroleum Products, UL 87. d)

49、 Wiring diagrams showing typical dispenser-control system connections. JULY 10, 2015 UL 1238 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 5 Frame and Enclosure 5.1 General 5.1.1 Control equipment shall be so fabricated and assembled that it has the strength and rigidity required to resist the abuses to which it is capable of being subjected, without increasing the risk of re, explosion, e