SAE J 1320-2013 Marine Electrical Switches《船用电气开关》.pdf

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1、_ SAE 7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSXEOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDODQGHQJLQHHUing sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including DQSDWHQWLQIULQJHPHQWDULVLQJWKHUHIURPLVWKHVROHUHVSRQVLELOLWR

2、IWKHXVHU SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this publication may be reproduced, stored i

3、n a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Emai

4、l: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1320_201311 SURFACE VEHICLE RECOMMENDED PRACTICE J1320 NOV2013 Issued 1981-06 Revised 2013-11 Superseding J1320 JUN200

5、4 Marine Electrical Switches RATIONALE Changed the definition of class B devices from water tight to weatherproof to be consistent with other standards. 1. SCOPE This SAE Recommended Practice covers the requirements for switches used in marine applications both under and over 50 V. 1.1 Purpose To re

6、commend a test procedure whereby a switch can be evaluated and tested to give acceptable reliability in the marine environment and usage. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, th

7、e latest issue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J378 Marine Propulsion System Wiring SAE J858 Electric

8、al Terminals Blade Type SAE J1171 External Ignition Protection of Marine Electrical Devices 2.1.2 ASTM Publication Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org ASTM B 117 Method of Salt Spray (Fog) Testing

9、ASTM D 1735 Practice for Testing Water Resistance of Coatings Using Water Fog Apparatus SAE INTERNATIONAL J1320 Revised NOV2013 Page 2 of 4 2.1.3 Federal Publication Available from the Superintendent of Documents, U. S. Government Printing Office, Mail Stop: SSOP, Washington, DC 20402-9320. U. S. Co

10、ast Guard Standards (33 CFR 183.425) 3. GENERAL A marine switch that is rated for over 50 V shall comply with this recommended practice in addition to UL, CSA, or similar requirements normally applied to switches operating at over 50 V. Any switch that is intended for installation in a battery compa

11、rtment, an engine compartment, in fuel tank spaces, or mounted through a bulkhead or panel exposing either side of the switch to battery, engine, or fuel tank space shall comply with SAE J1171. SAE J1171 is not required in installations that have diesel fuel as the only fuel source. 4. TERMINATION 4

12、.1 Terminations shall be of sufficient size to accommodate the correct gauge wire, and/or terminal, as determined by the switch ampacity and U. S. Coast Guard Standards (33 CFR 183.425). See Table 1. TABLE 1 Switch Current Rating Wire Size Accommodated 10 A 16 AWG 15 A 14 AWG 20 A 12 AWG 25 A 10 AWG

13、 40 A 8 AWG 55 A 6 AWB SAE INTERNATIONAL J1320 Revised NOV2013 Page 3 of 4 4.2 Blade terminals shall be flat blades complying with SAE J858 and shall, when tested in accordance with SAE J378, Section 7, with a mating wire termination, withstand a disconnect force of 6 lb for 1 min. 4.3 Screw type te

14、rminations shall have a minimum of number 8 screw size. 4.4 External solder lugs must provide for insertion or wrapping of the wire to form a mechanical lock. 4.5 External leads which are terminated internally shall be considered pigtails and, if the exposed wire is less than 7 in long, shall not be

15、 smaller than number 18 AWG. Longer pigtails shall not be smaller than number 16 AWG and meet the ampacity of the switch. 5. ELECTRICAL REQUIREMENTS 5.1 Prior to test, the voltage drop across any pair of closed contacts shall not be greater than 100 mV with 10 A flowing. 5.2 Prior to test, the curre

16、nt flow shall not exceed 5 mA across all open circuits and/or between terminals and metallic portions of the switch when 500 V d-c is applied. 5.3 The switch shall be cycled at its rated current (resistance or inductive loading) and voltage for 25 000 cycles. Each cycle shall consist of 2 s on and 8

17、 s off for each circuit. At the completion of the test, the voltage drop, as measured in 5.1 shall not have increased by more than a factor of three. 6. PHYSICAL REQUIREMENTS 6.1 With the switch mounted as recommended by the manufacturer, each terminal or pigtail shall be subjected to 10 lb of axial

18、 tension for 1 h at room temperature. The tension loads shall then be removed. The switch shall then be hot and cold cycled 10 times with each cycle consisting of 30 min at room temperature, 30 min at 35 C (30 F), 30 min at room temperature, 30 min at 100 C (212 F), and then allowed to cool to room

19、temperature. The switch shall be mechanically operated 10 times at each temperature extreme. The temperature cycled switch must then not have a voltage drop in excess of three times that measured in 5.1. 6.2 Marine switches shall be constructed of corrosion resistant materials, shall be tested to AS

20、TM B 117 for 100 h, and still have a satisfactory appearance. 6.3 A water tight switch is recommended for any application where the switch may become submerged. To be considered a water tight switch, the switch must pass the conditions in 5.3 and then be submerged 14 in below the surface of a 5% sol

21、ution of salt water for 1 h. After removal from the solution, the external portion of the switch is to be washed with fresh water and dried. The switch must then pass the conditions in 5.2. Water tight switches complying with this recommended practice, except those covered in 6.4, are designated Typ

22、e A. 6.4 A weatherproof switch is recommended for use in areas where the switch will be subjected to rain, spray, or VSODVKLQJ7REHFRQVLGHUHGZHDWKHUSURRIZKHQPRXQWHGLQWKHPDQXIDFWXUHUVUHFRPPHQGHGPDQQHUWKHVZLWFh shall be subjected to a 5% salt water spray test where the switch shall be mounted in the sp

23、ray (reference ASTM D 1735, steps 7 and 8) for 96 h. At the completion of the test, the external portion of the switch shall be washed with fresh water and dried. There shall not be more than 10 mA flowing when tested in accordance with 5.2. Weatherproof switches complying with this recommended prac

24、tice, except those covered in 6.3, are designated Type B. 6.5 Switches complying with this recommended practice except for those covered in 6.3 and 6.4 are designated Type C. 6.6 Switches that couple batteries in parallel, or substitute batteries in the charging circuit, must have the make before br

25、eak type of contact action. Switches used to couple or disconnect batteries must be capable of interrupting at least 300 A when used with a gasoline engine application. 7. MARKINGS 7.1 Marine switches complying with this recommended practice shall be marked with their AC and/or DC ratings, and WKHZR

26、UGV0$5,1(DQG6$(7SH$6$(7SH %RU6$(7SH&ZKLFKHYHULVDSSOLFDEOHDUUDQJHGLQDQSAE INTERNATIONAL J1320 Revised NOV2013 Page 4 of 4 suitable manner. Where marking of the switch is not practicable, the markings may alternatively appear on the smallest packaging of the switch. 7.2 Where required, marine switches

27、 for use in battery, engine, or fuel tank spaces shall be marked as prescribed in SAE J1171. 8. NOTES 8.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous

28、 issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE MARINE ELECTRICAL SYSTEMS COMMITTEE OF THE SAE MARINE TECHNICAL STEERING COMMITTEE