1、 EIA STANDARD TP-41E CABLE FLEXING TEST PROCEDURE FOR ELECTRICAL CONNECTORS (Revision of EIA-364-41D) EIA-364-41E JANUARY 2010 ANSI/EIA-364-41E-2010 Approved: January 14, 2010 EIA-364-41E EIA Standards Electronic Components Association NOTICE EIA Engineering Standards and Publications are designed t
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5、y obligation whatever to parties adopting the Standard or Publication. This EIA Standard is considered to have International Standardization implication, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the EIA Standard and t
6、he IEC document can be made. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability
7、of regulatory limitations before its use. (From Standards Proposal No. 5180 formulated under the cognizance of the CE-2.0 National Connector and Socket Standards Committee) Published by: ELECTRONIC COMPONENTS ASSOCIATION 2010 EIA Standards and Technology Department 2500 Wilson Boulevard Suite 310 Ar
8、lington, VA 22201 PRICE: Please call: Global Engineering Documents, USA and Canada (1-800-854-7179) http:/ All rights reserved Printed in U.S.A. PLEASE ! DONT VIOLATE THE LAW! This document is copyrighted by the EIA and may not be reproduced without permission. Organizations may obtain permission to
9、 reproduce a limited number of copies through entering into a license agreement. For information, contact: Global Engineering Documents 15 Inverness Way East Englewood, CO 80112-5704 or call USA and Canada (1-800-854-7179), International (303-397-7956) i CONTENTS Clause Page 1 Introduction . 1 1.1 S
10、cope . 1 1.2 Potential failure modes . 1 2 Test resources . 1 2.1 Equipment . 1 3 Test specimen 2 3.1 Description 2 3.2 Preparation 2 4 Test procedure . 3 4.1 Test condition I, round jacketed cable 3 4.2 Test condition II, flat cable . 3 4.3 Final measurement 4 5 Details to be specified . 4 6 Test d
11、ocumentation . 5 Figure 1 Circular cable flexing test setup 6 2 Flat cable flexing methods 7 Annex A Previous MIL-STD-1344 designations (Informative) A-1 ii (This page left blank) iii EIA-364-41E Page 1 TEST PROCEDURE No. 41E CABLE FLEXING TEST PROCEDURE FOR ELECTRICAL CONNECTORS (From EIA Standards
12、 Proposal No. 5180, formulated under the cognizance EIA CE-2.0 Committee on National Connector Standards, and previously published in EIA-364-41D.) 1 Introduction 1.1 Scope This standard establishes a method to determine the effectiveness of round jacketed cable to connector strain relief seal, or f
13、lat cable to connector strain relief seal or interface to withstand strain under repeated alternating cable-flexing stresses as experienced in use with molded or mechanical backshell cable strain-relief designs commonly used with electrical connectors. 1.2 Potential failure modes 1.2.1 Damage to the
14、 cable to connector strain relief seal (including molded boots and mechanical strain reliefs) or cable jacket that could allow undesired substances (air, water, etc.) to enter, and to further deteriorate the seal or jacket, ultimately impairing the effectiveness of either or both. 1.2.2 Weakening or
15、 destruction of conductor to contact joint(s) resulting in improper or defective electrical performance. 1.2.3 Intermittent or complete shorting between conductors during and after test. 1.2.4 Evidence of discontinuity between conductors during and after test. 2 Test resources 2.1 Equipment 2.1.1 Te
16、st condition I, round jacketed cable 2.1.1.1 Apparatus capable of applying forces to a molded boot or mechanical strain relief and connector assembly, so as to cause such assembly to be flexed in a plane, through 180 arc, alternately from a position 90 from the vertical on one side to a position 90
17、from the vertical on the other side, at an adjustable frequency of 12 to 14 complete cycles (of 360 total traverse) per minute; see figure 1, unless otherwise specified in the referencing document. EIA-364-41E Page 2 2.1.1.2 Roller (or rolls): Two smooth, cylindrical, equal-diameter steel, fixed pos
18、ition. Diameter of the rollers shall be approximately but not less than 2-1/2 times the maximum outside diameter of the cable jacket for diameters less than 20 millimeters (0.8 inch), unless otherwise specified in the referencing document. For 24 AWG conductors or smaller the roller diameters shall
19、be specified in the referencing document. 2.1.1.3 Equipment for checking the electrical continuity of the conductor-to-contact joints, prior to, during, and subsequent to testing. 2.1.1.4 Equipment, such as magnifiers (approximately 3X) for examining cable-to-plug seal or cable jacket prior to and s
20、ubsequent to testing. 2.1.2 Test condition II, flat cable 2.1.2.1 A fixture capable of gripping the cable 305 millimeters (12 inches) from the connector with uniform tension of 350 Newtons/meter 20 Newtons/meter (2.0 pounds/inch 0.1 pound/inch) of cable width and capable of moving either the cable o
21、r connector through an arc of 140 10; see figure 2, method 2, unless otherwise specified in the referencing document. 2.1.2.2 Equipment capable of monitoring current of 100 milliamperes and to indicate a discontinuity of 1 microsecond or longer interruption of current flow. 3 Test specimen 3.1 Descr
22、iption The test specimen shall consist of a cable terminated to a plug or receptacle connector with molded boot or mechanical strain relief. 3.2 Preparation 3.2.1 Test condition I, round jacketed cable The test specimen shall be mounted as show in figure 1 with the following conditions: 3.2.1.1 Its
23、cable is loosely but almost tangentially situated between the two rollers that are spaced farther apart than the maximum diameter of the cable, see 2.1.1.2. 3.2.1.2 Dimension X (see figure 1) shall be between the junction of the molded boot or mechanical strain relief and the cable jacket and the ce
24、nterline if the rollers. Dimension X shall be specified in the referencing document. 3.2.1.3 A weight of 454 grams (1 pound) shall be attached to the free end of the cable assembly, unless otherwise specified in the referencing document. EIA-364-41E Page 3 3.2.2 Test condition II, flat cable The tes
25、t specimen shall be mounted as shown in figure 2. 3.2.2.1 The assembled wired connector shall be installed in the fixture described in 2.1.2.1. 3.2.2.2 Connector mounting and cable tension fixture shall be clamped so slippage is minimal Care shall be taken that applied clamping pressure is not so gr
26、eat as to damage connector or cable. 4 Test procedure 4.1 Test condition I, round jacketed cable NOTE For cross reference to previous MIL-STD-1344 designations see Annex A. 4.1.1 Check the electrical continuity of the conductor to contact joints. 4.1.2 With the test specimen mounted as in 3.2.1 and
27、figure 1, forces are applied so as to cause the molded boot or strain relief to be repeatedly flexed 180 in opposite directions in the plane, over the rollers. A traverse of 180 in one direction plus 180 in the opposite direction shall be called one cycle. Unless otherwise specified, the cycling rat
28、e shall be 12 cycles per minute to 14 cycles per minute. 4.1.3 Unless otherwise specified in the referencing document, at the completion of 100 cycles, examination of seal, jacket and cable holding fixture shall be made to determine the presence or absence of failure modes; see 1.2.1. Electrical con
29、tinuity shall then be checked to determine presence or absence of failure mode; see 1.2.2 through 1.2.4. 4.2 Test condition II, flat cable NOTE For cross reference to previous MIL-STD-1344 designations see Annex A. 4.2.1 Check the electrical continuity of the conductor to contact joints. 4.2.2 With
30、test specimen mounted as in 3.3.2 each cable shall be individually loaded with specified weight. 4.2.3 The cable or the connector shall be moved through an arc of 140 10 for 500 cycles using either method 1 or 2 of figure 2, unless otherwise specified in the referencing document. 4.2.4 One complete
31、cycle shall consist of the rotation of the cable or connector from the neutral position to 70 5 in both directions. Unless otherwise specified in the referencing document, the cycling rate shall be 10 1 cycles per minute. EIA-364-41E Page 4 4.2.5 A monitoring current of 100 milliamperes maximum shal
32、l be applied through the conductor of the test cables and the contracts of the connector in series. Either a dummy plug or receptacle or the actual test counterpart connector may be mated to the connector under test to facilitate making the series circuit. 4.3 Final measurement 4.3.1 Visual The spec
33、imens shall be visually inspected for the failure modes indicated in 1.2. 4.3.2 Electrical Electrical continuity, insulation resistance and dielectric withstanding voltage shall be tested to insure the cable assembly performance has not been degraded. 5 Details to be specified The following details
34、shall be specified in the referencing document: 5.1 Dimension “X” in figure 1 5.2 Roller diameter for conductor sizes greater than 24 AWG 5.3 Test procedure, condition and method, as applicable 5.4 Total cycles, if other than specified herein 5.5 Cable to be used 5.6 Dielectric withstanding voltage
35、5.7 Insulation resistance 5.8 Allowable electrical discontinuity 5.9 Cycling rate, if other than specified herein 5.10 Special environmental conditions 5.11 Applied weight EIA-364-41E Page 5 6 Test documentation Documentation shall contain the details specified in clause 5, with any exceptions, and
36、the following: 6.1 Title of test 6.2 Specimen description including fixturing 6.3 Test equipment used, and date of last and next calibration 6.4 Test procedure 6.5 Values and observations 6.5.1 Test conditions and environments 6.5.2 Electrical continuity checks 6.6 Name of operator and start/finish
37、date(s) of test EIA-364-41E Page 6 X dimension is from the end of the boot or strain relief to the cable jacket, and the centerline of the rollers X Cable guide Weight Figure 1 - Circular cable flexing test setup EIA-364-41E Page 7 Method 1 Method 2 Figure 2 - Flat cable flexing methods EIA-364-41E
38、Page A-1 Annex A Previous MIL-STD-1344 designations (Informative) This informative annex is provided as a cross reference to the designations previously contained in MIL-STD-1344, method 2017. Table A.1 Test condition designation EIA-364-41 designations MIL-STD-1344, method 2017 designations Conditi
39、on I Procedure I Condition II Procedure II Revision History Revision letter Project number Additions, changes and deletions D SP-5170 Added note under paragraph 4.1 and 4.2, and add Annex A E SP-5180 Revise paragraph 2.1.1.1, 2.1.1.2, 2.1.2.1, 3.2.1.2, 3.2.1.3, 4.1.3, 4.1.4, 4.2.2, 4.2.3, 5.2, 5.11,
40、 and revise figure 1. Delete paragraph 4.1.4, 5.12 and table 1 EIA Document Improvement Proposal If in the review or use of this document, a potential change is made evident for safety, health or technical reasons, please fill in the appropriate information below and mail or FAX to: Electronic Compo
41、nents Association Standards and Technology Department 2500 Wilson Blvd. Suite 310 Arlington, VA 22201 FAX: (703-875-8908) Document No.: Document Title: Submitters Name: Telephone No.: FAX No.: E-mail: Address: Urgency of Change: Immediate: At next revision: Problem Area: a. Clause Number and /or Dra
42、wing: b. Recommended Changes: c. Reason/Rationale for Recommendation: Additional Remarks: Signature: Date: FOR EIA USE ONLY Responsible Committee: Chairman: Date comments forwarded to Committee Chairman: Electronic Components Association 2500 Wilson Boulevard, Suite 310* * Arlington, VA 22201 * * fax 703-875-8908 www.ecaus.org
