1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther
2、efrom, is the sole responsibility of the user.” 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 2015 SAE International All rights reserved. No part of this
3、publication may be reproduced, stored in 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: +1 724-776-49
4、70 (outside USA) Fax: 724-776-0790 Email: 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/J2174_201510 SURFACE VEHICLE STANDARD J2174 OCT2015 Issued 1993-10 Revised 2015-
5、10 Superseding J2174 APR2009 Heavy-Duty Wiring Systems for Trailers 2032 mm or More in Width RATIONALE Reverted cable sizes from ISO to AWG. Increased swept sine test from 1kHz to 2 kHz. Clerical corrections were also made. 1. SCOPE This SAE Standard establishes the minimum performance requirements
6、for electrical distribution systems for use in dollies and trailers in single or multiple configurations. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publicatio
7、ns 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 +1 724-776-4970 (outside USA), www.sae.org. SAE J163 Low Tension Wiring and Cable Terminals and Splice Clips SAE J447 Prevention of
8、 Corrosion of Motor Vehicle Body and Chassis Components SAE J560 Primary and Auxiliary Seven Conductor Electrical Connector for Truck-Trailer Jumper Cable SAE J1128 Low Voltage Primary Cable SAE J1455 Recommended Environmental Practices for Electronic Equipment Design in Heavy-Duty Vehicle Applicati
9、ons SAE J2139 Tests for Signal and Marking Devices Used on Vehicles 2032 mm or more in Overall Width SAE J2202 Heavy-Duty Wiring Systems for On-Highway Trucks SAE J2394 Seven Conductor Cable for ABS Power - Truck and Bus SAE J2549 Single Conductor Cable for Heavy-Duty Applications - Truck and Bus SA
10、E J2577 Heavy Duty Lamp Electrical Connector Standard SAE INTERNATIONAL J2174 OCT2015 Page 2 of 12 2.1.2 ASTM Publications 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 Standard Method of Salt Spr
11、ay (Fog) Testing ASTM D 471 Standard Test Method for Rubber Property-Effect of Liquids 2.2 Related Publications The following publications are provided for information purposes only and are not a required part of this SAE Technical Report. 2.2.1 SAE Publications Available from SAE International, 400
12、 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. SAE J575 Test Methods and Equipment for Lighting Devices and Components for Use on Vehicles Less than 2032 mm in Overall Width SAE J2247 Truck Tractor Power Output
13、 for Trailer ABS 2.2.2 TMC Publications Available from the Technology and Maintenance Council, American Trucking Associations, 950 North Glebe Road, Suite 210, Arlington, VA 22203-4181, Tel: (703) 838-1763, . TMC RP 166 Low Voltage Primary Electrical Cable Specification for Heavy Duty Electrical Rep
14、air TMC RP 114 Wiring Harness Protection TMC RP 137 Antilock Electrical Supply from Tractors through the SAE J560 Seven Pin Connector TMC RP 141 Trailer ABS Power Supply Requirements TMC RP 153 Lamp to Connector Interface 2.2.3 TTMA Publications Available from Truck Trailer Manufacturers Association
15、, 1020 Princess Street, Alexandria, VA 22314-2247, Tel: 703-549-3010, www.ttmanet.org. TTMA RP97-97 Trailer Antilock Braking System Wiring TTMA RP111 Electrical System Maintenance and Repair for Trailers Without Sealed Wiring Harness Systems TTMA RP119 Electrical Interface for Truck-Trailer Intercon
16、nection Design and Installation of Lighting Systems for Trailers 2.2.4 Military Specification Available from IHS Global Engineering Documents, 15 Inverness Way East, Englewood, CO 80112-5704, Tel: 877-413-5184, . MIL-STD-1344A Test Methods for Electrical Connectors SAE INTERNATIONAL J2174 OCT2015 Pa
17、ge 3 of 12 3. DEFINITIONS 3.1 CONNECTOR A coupling device which provides an electrical and mechanical junction between two multiconductor cables, or between a cable and an electrical component. 3.2 TERMINAL A device attached to a wire or cable to provide the electrical interface between two cables o
18、r a cable and an electrical component. 3.3 DOLLY A chassis equipped with one or more axles, a fifth wheel and/or equivalent mechanism, and drawbar, the attachment of which converts a semitrailer to a full trailer. 3.4 ELECTRICAL DISTRIBUTION SYSTEM The electrical wiring system includes all cables an
19、d wiring, connectors and terminations, coverings, seals, any other incorporated items to maintain the integrity and performance of the electrical system, and the connector to any mating device with the exception of the SAE J560 connector where only the electrical performance requirements apply. The
20、electrical wiring system does not include the functional devices to which the wiring system is attached such as lamps, ABS electronic control modules or sensors. 3.5 SEALED A condition which provides a nonleaking union between two mechanical components or any place within an electrical distribution
21、system. A sealed union is defined as one which does not allow the ingress of moisture. 4. TESTS 4.1 Test Procedures Conformance to the requirements of this document shall be determined by subjecting each device to each test procedure listed in this document. Unless otherwise stated, the tests are to
22、 be performed at 25 C 5 C and at 12.5 V DC 0.1 V DC or per the manufacturers recommendations. Sample sizes shall be statistically valid. The tests shall be conducted in the sequence as follows: 4.1.1 Voltage Drop 4.1.10 Insulation Resistance - Multiconductor Assemblies 4.1.2 Connector Durability 4.1
23、.3 Salt Fog 4.1.4 Thermal Cycle 4.1.5 Thermal Shock 4.1.6 Oil Absorption 4.1.7 Salt Water Immersion 4.1.8 Steam Clean and Pressure Wash 4.1.9 Vibration 4.1.11 Tensile Strength - Wire to Terminal 4.1.12 Tensile Strength - Wire to Wire 4.1.13 Connector Pull Force 4.1.14 Connector Misengagement Force 4
24、.1.15 Connector Terminal Retention Force 4.1.1 Voltage Drop 4.1.10 Insulation Resistance - Multiconductor Assemblies SAE INTERNATIONAL J2174 OCT2015 Page 4 of 12 4.1.1 Voltage Drop The measurement of connection voltage drop shall be per SAE J163 and Figures 1 and 2. The voltage drop of the cables sh
25、all be subtracted from the measured values. Except for connectors specified by SAE J560, the voltage drop shall be measured at the current specified in Table 1 of this document. Figure 1 - Cable to cable assembly Figure 2 - Cable to component assembly 4.1.2 Connector Durability a. An assembled conne
26、ctor with terminals shall be mated and unmated 25 times. b. Using the procedure described in 4.1.1, measure the millivolt drop of the mated terminal pair. 4.1.3 Salt Fog Testing shall be performed per ASTM B 117-73 test method for 240 hours. During the test, each circuit shall be operating at the te
27、st currents specified in Table 1. The SAE J560 connector plug-to-receptacle interface may be tested to the SAE J560 requirements. 4.1.4 Thermal Cycle Connector and cable assemblies shall be connected to their mating parts. The assemblies shall be exposed to 25 cycles of the thermal cycle profile sho
28、wn in Figure 3. The assemblies shall be energized with test voltage commencing at point “A” of Figure 3 and de-energized at point “B” of each cycle. The current shall be limited to 1.0 A. SAE INTERNATIONAL J2174 OCT2015 Page 5 of 12 Figure 3 - Thermal cycle profile 4.1.5 Thermal Shock The cable to c
29、able or cable to component connector assemblies shall be subjected to 10 cycles of thermal shock. One cycle shall consist of 30 min at a temperature of 40 C 2 C followed by 30 minutes at a temperature of 80 C 2 C with a transfer time of 2 minute maximum. 4.1.6 Oil Absorption Connectors shall be capp
30、ed prior to testing to prevent entry of oil into the connector cavities during the test. The wiring assembly shall be immersed in ASTM D 471, IRM-902 engine oil at 50 C 3 C for a period of 20 hours. After removal from the engine oil, remove excess oil from the surface and allow sufficient time for e
31、xcess oil trapped in the assembly to drain completely. SAE INTERNATIONAL J2174 OCT2015 Page 6 of 12 4.1.7 Salt Water Immersion Salt water immersion shall not be performed on the SAE J560 connector plug-to-receptacle interface. 4.1.7.1 Cable to Cable Assembly a. Immerse the assembly at a minimum dept
32、h of 300 mm in a 5% solution of salt (sodium chloride) water. b. Extend the cable ends out of the solution. c. Connect the assembly to a source set at test voltage. The current flowing shall be a minimum of 1.0 A. d. Energize the assembly for 30 minutes each hour. e. Terminate test after 60 hours. 4
33、.1.7.2 Cable to Component Assembly a. Immerse the assembly at a minimum depth of 300 mm in a 5% solution of salt (sodium chloride) water. b. Extend the ends of the cable assembly out of the solution. c. Connect the assembly to a source set at component rated voltage or test voltage. d. Energize the
34、assembly for 30 minutes each hour. e. Terminate test after 60 hours. 4.1.8 Steam Cleaning and Pressure Washing Conduct testing per SAE J1455. The addition of detergents or other additives to the water is recommended. The sample should be oriented in an as installed condition, simulating normal opera
35、ting conditions. 4.1.9 Vibration 4.1.9.1 Applicability It is difficult to subject a complete trailer wiring system to a vibration test due to its size. To accomplish a meaningful test, individual sections need to be tested alone or along with other sections. Each connector system as well as each mou
36、nting support location must be tested. Unsupported sections routed around tight corners or passing through cutouts should also be tested. 4.1.9.2 Test Set Up The section of wiring under test shall be attached to the shaker table simulating the actual installation. The remainder of the wiring shall b
37、e free and unsupported for a minimum of one vertical meter, draped off the test table. If the section under test may accumulate ice during actual usage, a 2 kg weight shall be added to the free wiring, one half meter below the surface of the shaker table. SAE INTERNATIONAL J2174 OCT2015 Page 7 of 12
38、 4.1.9.3 Test Method Alternative test methods, 4.1.9.3.1 or 4.1.9.3.2, may be applied depending upon availability of equipment. Method 4.1.9.3.1 is recommended. With 100 mA flowing through the circuits under test during the last thirty minutes of the test, monitor each circuit for discontinuities. M
39、easure millivolt drop at the termination of the test using the procedure described in 4.1.1. 4.1.9.3.1 Vibration testing shall be performed by the procedure described in SAE J2139. 4.1.9.3.2 Swept sine vibration testing shall be performed by the procedure described in SAE J1455 4.10.4.1 using a swee
40、p profile from 10 to 2000 Hz, single axis for 6 hours. 4.1.9.3.3 Random vibration testing shall be performed by the procedure described in SAE J1455 4.10.4.2 4.1.10 Insulation Resistance - Multiconductor Assemblies Using a 500 V megohmmeter or 500 V, AC or DC, hipotential tester, check each terminal
41、 to all other terminals and any conducting shells or conduits. 4.1.11 Tensile Strength - Wire to Terminal If insulation crimps are present, the crimp wings shall be opened before testing. The terminal and wire assembly shall be placed in a wire terminal pull tester. Sufficient force shall be applied
42、 to pull the wire out of the terminal or break the wire. All testing is to be conducted at a uniform rate of speed not to exceed 305 mm/min. 4.1.12 Tensile Strength - Wire to Wire The wire to wire splice shall be placed in a pull tester. Sufficient force shall be applied to break the wire or break t
43、he wire to wire splice. All testing is to be conducted at a uniform rate of speed not to exceed 305 mm/min. 4.1.13 Connector Pull Force All mated connectors that may be subjected to disconnection forces during use shall have a force of 100 N applied in the axis of engagement of the connector pair in
44、 the direction of disengagement. The force shall be applied at a rate not to exceed 5 N/s. 4.1.14 Connector Misengagement Force Unmated multicavity connector pairs shall have a force of 178 N applied in the axis of and in the direction of engagement. The connectors shall be oriented to test the mech
45、anical strength of the connector systems polarization features. 4.1.15 Terminal Retention Tensile Force The terminal retention force within the connector cavity shall be determined by applying and measuring a tensile load along the axis of the terminal. The load should be applied to the attached con
46、ductor. 5. REQUIREMENTS 5.1 Voltage Drop The voltage drop shall not exceed the values tabulated in Table 1. Cable sizes are defined per SAE J1128. SAE INTERNATIONAL J2174 OCT2015 Page 8 of 12 Table 1 - Voltage drop SAE Cable Size (AWG) Test Current (Amperes) Maximum Millivolt Drop (cable to device)
47、(cable to cable) 20 5 100 18 10 100 16 15 100 14 20 100 12 30 100 10 40 100 8 50 100 6 60 100 5.2 Tensile Strength - Wire to Terminal The tensile strength shall exceed the values listed in Table 2 for an effective electrical and mechanical connection. Table 2 - Minimum tensile strength SAE Cable Siz
48、e (AWG) Force (N) (Wire to Terminal) (Wire to Wire) 20 70 18 80 16 124 14 155 12 177 10 200 8 222 6 355 5.3 Tensile Strength - Wire to Wire The tensile strength shall exceed the values listed in Table 2 for an effective electrical and mechanical connection. 5.4 Connector Durability The millivolt dro
49、p shall not exceed the values listed in Table 1 for the wire size under evaluation. At the conclusion of the test, there shall be no evidence of cracking, breaking or physical deformation that would affect performance in the other required tests. 5.5 Vibration The millivolt drop shall not exceed the values listed in Table 1 for the wire size under consideration. There shall be n
