1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 218A Battery Contactors for Use in Diesel Engines Driving Centrifugal Fire PumpsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL C
2、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Battery Contactors for Use in Diesel Engines Driving Centrifugal Fire Pumps, UL 218A Third Edition, Dated February 26, 2004 Summary of Topics Reaffirmation and Continuanc
3、e of the Third Edition of the Standard for Battery Contactors for Use in Diesel Engines Driving Centrifugal Fire Pumps, UL 218A, as an American National Standard. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Ch
4、anges in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject
5、dated December 14, 2012. 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 war
6、ranty of any kind, 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
7、, or any other damages 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 for
8、m of the claim. Users 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 purchas
9、er is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item.
10、 The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. APRIL 5, 2013 UL 218A tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISS
11、ION FROM UL APRIL 5, 2013 UL 218A tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 26, 2004 (Title Page Reprinted: April 5, 2013) 1 UL 218A Standard for Battery Contactors for Use in Diesel Engines Driving Cen
12、trifugal Fire Pumps First Edition July, 1985 Second Edition March, 1994 Third Edition February 26, 2004 This ANSI/UL Standard for Safety consists of the Third Edition, including revisions through April 5, 2013. The most recent designation of ANSI/UL 218A as a Reaffirmed American National Standard (A
13、NS) occurred on April 5, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. 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
14、Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. 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 Standa
15、rds shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 218A-2008 (R2013)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 5, 2013 UL 218A 2 No Text on This PageUL COPYRIGHTED MATERIA
16、L NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Components 5 3 Units of Measurement .5 4 Undated References 6 5 Glossary .6 CONSTRUCTION 6 General 6 7 Protection Against Corrosion .6 8 Provisions for Mounting 7 9 Insulating Mate
17、rial .7 10 Live Parts .7 11 Internal Wiring .7 12 Wiring Terminals .8 13 Coil Windings .8 14 Spacings 8 PERFORMANCE 15 General .9 16 Operation Test 9 17 Overload Test .9 18 Endurance Test 10 19 Dielectric Voltage-Withstand Test .11 20 Mechanical Strength Test 11 RATING 21 Details .12 MARKINGS 22 Det
18、ails .12 APPENDIX A Standards for ComponentsA1 APRIL 5, 2013 UL 218A 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 5, 2013 UL 218A 4 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION
19、 WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover battery contactors for use in the starting systems of diesel engines driving centrifugal re pumps, in accordance with the Standard for the Installation of Stationary Pumps for Fire Protection, NFPA 20. 1.2 These requiremen
20、ts cover battery contactors for use in starting systems rated 50 volts maximum. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components used in the
21、 products covered by this standard. 2.2 A component 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. 2.3 A
22、 component shall be used in accordance with its rating established for the intended conditions of use. 2.4 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 temperat
23、ures not exceeding specied limits, and shall be used only under those specic conditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. FEBRUARY 26, 2004 UL 218A 5UL COPYRIGHTED MATERIAL NOT AUTHORIZ
24、ED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Undated References 4.1 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. 5 Glossary 5.1 For the purpose
25、of this standard the following denitions apply. 5.2 BREAKAWAY CURRENT The initial current supplied by the starting system to the diesel engine. 5.3 ROLLING CURRENT The average current being supplied by the starting system to achieve a constant turning or rolling of the engine. CONSTRUCTION 6 General
26、 6.1 A battery contactor shall be formed and assembled so that it will have the strength and rigidity necessary to resist anticipated abuses encountered in the end-use without resulting in a risk of re, electric shock, or injury to persons due to total or partial collapse with resulting reduction of
27、 spacings, loosening or displacement of parts, or other serious defects. 6.2 A battery contactor shall be provided with means to enable both manual and automatic operation. 7 Protection Against Corrosion 7.1 Iron and steel parts shall be protected against corrosion by enameling, galvanizing, sherard
28、izing, plating, or other equivalent nish. This applies to all springs and other parts required for proper mechanical operation. Exception No. 1: A bearing, and the like, need not have corrosion protection if such protection is impracticable. Exception No. 2: A small part of iron or steel such as a w
29、asher, screw, bolt, and the like, that does not carry current need not have corrosion protection if the corrosion of such a part would not be likely to result in a risk of re, electric shock, or injury to persons. Exception No. 3: A part made of stainless steel that may be polished or treated need n
30、ot have corrosion protection. FEBRUARY 26, 2004 UL 218A 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 8 Provisions for Mounting 8.1 A battery contactor shall be provided with means for secure mounting to a supporting surface. A bolt, scre
31、w, or other part used to hold together component parts of a battery contactor shall not be used for securing the battery contactor to the supporting surface. 9 Insulating Material 9.1 Material for the support of uninsulated live parts shall be slate, porcelain, phenolic or cold-molded composition, o
32、r other material investigated for the support of such parts, and shall be able to withstand the most severe conditions expected to be met in service. 9.2 Insulating material, including barriers between parts of opposite polarity and material that may be subject to the inuence of the arc formed by th
33、e opening of contacts, shall be investigated for the application. 10 Live Parts 10.1 A current-carrying part shall have the necessary mechanical strength and ampacity for its intended use, and shall be of metal or other material that is suitable for the application. 10.2 An uninsulated live part, in
34、cluding a terminal, shall be secured to its supporting surface by a method other than friction between surfaces so that it will be prevented from turning or shifting in position if such motion may result in reduction of spacings to less than those required elsewhere in this standard. A contact assem
35、bly shall be mounted so as to maintain alignment of contacts. Exception: A pressure terminal connector need not be prevented from turning if no spacings less than those required result when the terminals are turned 30 degrees toward each other or toward other uninsulated parts of opposite polarity,
36、or toward grounded metal parts. 11 Internal Wiring 11.1 The insulation on all internal wires of a battery contactor shall be rated for the voltage and the temperature conditions of use. It shall also be evaluated with respect to other conditions of service to which it is intended. Insulation shall b
37、e at least 1/32 inch (0.8 mm) thick if the internal wiring is subjected to movement, exing, handling, or manipulation during its intended use, or during mechanical maintenance. 11.2 A wireway shall be smooth and free from sharp edges, burrs, ns, moving parts, or other surfaces that may cause abrasio
38、n of the insulation on conductors. 11.3 Unless covered by suitable insulating sleeving or tubing, a bare conductor, including pigtails and coil leads, shall be supported so that the spacings required elsewhere in this standard will be maintained. 11.4 All joints and connections shall be mechanically
39、 secure and shall provide electrical contact without strain on connections and terminals. FEBRUARY 26, 2004 UL 218A 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 11.5 A splice shall be provided with insulation at least equivalent to that
40、of the wires involved. 12 Wiring Terminals 12.1 A battery contactor shall be provided with wiring terminals for the connection of conductors supplying current to the starting system of the diesel engine and the conductors supplying current to the control circuit. 12.2 A fastening device, such as a s
41、tud, nut, bolt, spring or at washer, or similar device, that is required for proper installation shall either be provided as part of the component terminal assembly, or mounted on or separately packaged with the battery contactor. 13 Coil Windings 13.1 A coil winding shall resist the absorption of m
42、oisture. This may be accomplished by impregnating, dipping in or brushing with varnish, or by other investigated means. Exception: Film-coated wire is not required to be given additional treatment to prevent moisture absorption. 14 Spacings 14.1 The spacings in a battery contactor shall be 1/16 inch
43、 (1.6 mm) through air and over the surface of insulating material, between any uninsulated live part and an uninsulated live part of opposite polarity, uninsulated grounded part, or exposed metal part. 14.2 A vitreous-enamel or similar coating is not to be used as insulation in place of spacings. 14
44、.3 In addition to, but not in place of, spacings required otherwise, if contact arms, blades, or similar parts remain connected to the starting system terminals with the battery contactor in the off position, the spacings from such parts in the off position to exposed dead metal parts that are isola
45、ted (insulated) shall not be less than 1/8 inch (3.2 mm). 14.4 Film-coated wire is an uninsulated live part in determining compliance with the spacing requirements in this standard. 14.5 An insulating barrier or liner used as the sole separation between uninsulated live parts and grounded dead metal
46、 parts, or between uninsulated live parts of opposite polarity, shall be a material that is suitable for the mounting of uninsulated live parts and shall not be less than 0.028 inch (0.71 mm) thick. 14.6 An insulating barrier or liner that is used in addition to an air space in place of the required
47、 through air spacings shall not be less than 0.028 inch (0.71 mm) thick. If the barrier or liner is vulcanized ber, the air space shall not be less than 1/32 inch (0.8 mm). If the barrier or liner is of other material that has not been evaluated for the support of uninsulated live parts, the air spa
48、ce provided shall be investigated for the application. Exception: A barrier or liner that is used in addition to not less than one-half the required spacing through air may be no less than 0.013 inch (0.33 mm) thick if the barrier or liner is of a material that is acceptable for the mounting of unin
49、sulated live parts, has the necessary mechanical strength if exposed or otherwise likely to be subjected to mechanical damage, is reliably held in place, and is located so that it will not be adversely affected by operation of the battery contactor in service. FEBRUARY 26, 2004 UL 218A 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 15 General 15.1 The performance of battery contactors shall be investigated by subjecting a representative
