ECA EIA-364-45C-2012 TP-45C FIREWALL FLAME TEST PROCEDURES FOR ELECTRICAL CONNECTORS.pdf

1、 EIA STANDARD TP-45C FIREWALL FLAME TEST PROCEDURES FOR ELECTRICAL CONNECTORS EIA-364-45C (Revision of EIA-364-45B) November 2012 ANSI/EIA-364-45C-2012 Approved: November 26, 2012 EIA-364-45CNOTICE EIA Engineering Standards and Publications are designed to serve the public interest through eliminati

2、ng misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any

3、respect preclude any member or nonmember of ECIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than ECIA members, whether the standard is to be used eith

4、er domestically or internationally. Standards and Publications are adopted by ECIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, ECIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting

5、 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 the IEC document can be made. This Standar

6、d 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 of regulatory limitations before its use.

7、 (From Standards Proposal No. SP-5238 formulated under the cognizance of the CE-2.0 National Connector Standards Committee). Published by Electronic Components Industry Association 2012 Engineering Department 2214 Rock Hill Road, Suite 170 Herndon, VA 20170 PLEASE ! DONT VIOLATE THE LAW! This docume

8、nt is copyrighted by the ECIA and may not be reproduced without permission. Organizations may obtain permission to reproduce a limited number of copies through entering into a license agreement. For information, contact: IHS 15 Inverness Way East Englewood, CO 80112-5704 or call USA and Canada (1-80

9、0-854-7179), International (1-303-397-7956) i CONTENTS Clause Page 1 Introduction . 1 1.1 Scope . 1 2 Test resources 1 2.1 Equipment . 1 2.2 Material . 2 3 Test Specimen . 2 3.1 Description 2 3.2 Preparation 2 4 Test Procedure 3 4.1 Mounting . 3 4.2 Electrical tests . 3 4.3 Temperature monitor 3 4.4

10、 Test conditions 3 4.5 Post test examination 4 5 Details to be specified . 5 6 Test documentation . 5 Figures 1 Thermocouple details 6 2 Firewall connector fixture details . 7 3 Firewall connector fixture assembly . 8 4 Firewall connector test setup example 9 5 Schematic circuit for testing firewall

11、 connectors 10 Table 1 Connector test currents . 4 ii (This page left blank)EIA-364-45C Page 1 TEST PROCEDURE No. 45C FIREWALL FLAME TEST PROCEDURE FOR ELECTRICAL CONNECTORS (From EIA Standards Proposal No. 5238, formulated under the cognizance EIA CE-2.0 Committee on National Connector Standards, a

12、nd was previously published in EIA-364-45B.) 1 Introduction 1.1 Scope This standard establishes a test method to determine the ability of a mated pair of electrical firewall connectors to resist specified flame and vibration conditions during 20 minutes of exposure by preventing flames from breachin

13、g the firewall through the connectors and providing specific electrical performance for the first 6 minutes. NOTE Do not use this test procedure to describe or appraise the fire hazard or fire risk of the materials, products or assemblies under actual fire conditions. Each application should be asse

14、ssed for compatibility with electrical and circuit requirements. CAUTION 1 This procedure involves hazardous materials, operations, and equipment. This procedure does not purport to address all safety problems associated with its use or all regulatory requirements. It is the responsibility of the us

15、er of this procedure to establish appropriate safety and health practices and to determine the applicability or regulatory limitations before its use. 2 This test should be conducted in a well ventilated area to avoid inhalation of smoke and toxic products of combustion. Personnel should be protecte

16、d from risk of injury and equipment protected from damage. 2 Test Resources 2.1 Equipment 2.1.1 An inspirator torch capable of producing and maintaining a flame at a constant temperature of 1100 C 25 C (2012 F 45 F) from propane or natural gas with a flow rate equivalent to an input of 3.48 x 107J/h

17、 to 3.90 x 107J/h (33,000 Btu/h to 37,000 Btu/h). Primary cone diameter shall be 12.7 millimeters - 19 millimeters (0.50 inch - 0.75 inch) at nozzle. Secondary cone shall engulf or provide representative impingement coverage, dependent on size of the test sample. EIA-364-45C Page 2 2.1.2 A gas flowm

18、eter with an accuracy of 1% full scale. 2.1.3 A thermocouple with an exposure junction as shown in Figure 1 and temperature meter capable of continuously measuring 1100 C 25 C (2012 F 45 F) with an accuracy of 1% of the reading. 2.1.4 A firewall test fixture as shown in Figures 2, 3 and 4. 2.1.5 Vib

19、ration equipment capable of vibrating the connector and test fixture continuously at 33 Hz with a total excursion of 6.3 millimeters (0.25 inch). 2.1.6 DC power supply with a maximum open circuit voltage of 28 volts capable of producing test currents between 5 amperes and 150 amperes. 2.1.7 A center

20、-tapped transformer AC power supply capable of producing 110 volts / 220 volts to 130 volts / 260 volts at either 50 Hz or 60 Hz at a minimum current capacity of 2 amperes. This will result in the connector seeing 110 volts to 130 volts from any contact to the shell and 220 volts to 260 volts differ

21、ential between any odd and even numbered contact. 2.1.8 A multi-range undamped DC ammeter with an accuracy of 1% full scale and capable of measuring DC currents between 5 amperes and 150 amperes. 2.1.9 Quantity two (2) of the 2 amperes AC fast blow fuses to verify maximum AC current is not exceeded.

22、 2.1.10 An adjustable resistance load capable inducing the correct amperage ( DC) needed to verify electrical integrity of the test subject test article. 2.2 Material 2.2.1 Fiberglass wrap (untreated glass tape) or equivalent, see Figure 4. 3 Test Specimen 3.1 Description The test specimen shall be

23、a mated pair of wired and torqued connectors complete with straight connector accessory with saddle bars. 3.2 Preparation 3.2.1 Connect alternate contacts into two series groups, see Figure 5, with wire suitable for high temperature application. EIA-364-45C Page 3 3.2.2 Thoroughly clean the test spe

24、cimen of oil, grease, dirt and other foreign matter using a noncombustible solvent. 3.2.3 Wrap wire bundles with plain fiberglass tape (untreated) as shown in Figure 4 or use other suitable means to protect the wire from the flame and stabilize the wire bundle-connector interface during application

25、of flame and vibration. Protective wrap should be as close as possible to the rear of the connector dielectric and under the cable clamp. Protective wrap shall extend 178 millimeters (7 inches) minimum from the rear of the saddle clamp on the plug. 4 Test Procedure 4.1 Mounting 4.1.1 Attach the test

26、 specimen to the connector mounting plate shown in Figures 2, 3 and 4. 4.1.2 Attach the mounting plate and thermal insulator sheet to the firewall test fixture as shown in figure 3. 4.1.3 Mount the firewall test fixture on the vibration machine table as shown in Figure 4. 4.1.4 Support the wire bund

27、les on both sides of the connector to stationary structure 200 millimeters to 250 millimeters (8 inches to 10 inches) from the connector backshell. 4.2 Electrical tests 4.2.1 Connect the wired connector to the circuit shown in Figure 5 to test the connectors electrical integrity in accordance with 4

28、.4.7. 4.2.2 The connector shall be solidly grounded during the entire test. 4.3 Temperature monitor 4.3.1 Position the thermocouple as shown in Figure 4. 4.4 Test conditions 4.4.1 Move the torch and thermocouple so the flame is not contacting the connectors. Ignite the gas and adjust the flow of gas

29、 to obtain 3.48 x 107J/h to 3.90 x 107J/h (33,000 Btu/h to 37,000 Btu/h) and a flame temperature of 1100 C 25 C (2012 F 45 F). Position the torch so that the thermocouple measures the hottest portion of the flame. 4.4.2 Apply DC current as shown in Table 1 to all contacts. Do not alter the current d

30、uring the test. EIA-364-45C Page 4 4.4.3 Start the vibration machine and vibrate continuously at 33 Hz with a total excursion of 6.3 millimeters (0.25 inch). 4.4.4 Begin flame and vibration test. 4.4.5 Move the torch and thermocouple to the position shown in Figure 4. When the thermocouple reaches 1

31、100 C 25 C (2012 F 45 F), start the 20 minute test period. Continuously monitor the gas flow and temperature. 4.4.6 Observe and record the presence of flame, for any reason or from any source, on the protected side of the firewall test fixture during the entire 20 minutes of flame exposure. 4.4.7 El

32、ectrical performance test, Figure 5 (six minutes). 4.4.7.1 During the first five minutes of combined flame and vibration with Switch 1 (see Figure 5) closed, apply specified DC test current (see Table 1) through all contacts. Monitor the ammeter for fluctuations indicating current discontinuities. A

33、 drop of more than 10% from the initial value shall be deemed a failure. Table 1 - Connector test currents Contact size DC test currents, amperes 22 5.0 20 7.5 16 13 12 23 10 34 8 46 4 80 0 150 4.4.7.2 At the end of five minutes, disconnect the DC power by opening Switch l (see Figure 5). 4.4.7.3 Ap

34、ply AC voltage for one minute between each group of contacts and the shell by closing Switch 2 (see Figure 5). AC leakage current should not open a 2 amperes fast blow fuse. 4.4.7.4 At the end of six minutes remove the AC current potential and continue flame and vibration for an additional 14 minute

35、s for a total elapsed time of 20 minutes. 4.5 Post test examination 4.5.1 Allow mounted connectors to cool to room temperature. Examine the connector inserts for any visible indication of breach of the dielectric material. EIA-364-45C Page 5 5 Details to be specified The following details shall be s

36、pecified in the referencing document: 5.1 Connector assembly including backshells, cable clamps and accessories 5.2 Special mounting and torque requirements, if applicable 5.3 Vibration frequency, if other than 33 Hz 5.4 Voltage 6 Documentation Documentation shall contain the details specified in cl

37、ause 5, with any exceptions, and the following: 6.1 Title of test 6.2 Specimen description 6.3 Show calculation equating the fuel type to the required Btu/h thermal flux 6.4 Test equipment used, and date of last and next calibration 6.5 Fuel type 6.6 Values and observations, including observed disco

38、ntinuities and leakage currents 6.6 Name of operator and start/finish date(s) of test EIA-364-45C Page 6 NOTES 1 The thermocouple wire shall be platinum-rhodium, type R or S, 22 AWG. 2 If a metal sheath is used, the maximum diameter shall not exceed 3 millimeters (0.12 inch). 3 The thermocouple shal

39、l be unshielded. Figure 1 - Thermocouple details EIA-364-45C Page 7 inch mm inch mm inch mm inch mm 0.020 0.51 0.329 8.36 1.500 38.10 8.200 208.28 0.125 3.18 0.336 8.53 2.500 63.50 10.000 254.00 0.190 4.83 0.500 12.70 4.000 101.60 11.000 279.40 0.202 5.13 0.600 15.24 4.125 104.78 0.208 5.28 1.000 25

40、.40 5.250 133.35 0.250 6.35 1.250 31.75 7.000 177.80 NOTES 1 Dimensions are in inches. Unless otherwise specified, dimensions symmetrical about centerline. 2 A hole shall provide suitable clearance for the applicable connector. 3 B connector mounting holes shall be as specified for the connectors un

41、der test. A typical wall mount flange pattern shown. 4 Thermal barrier sheet required to prevent destructive heat transfer to vibration equipment. Figure 2 Firewall connector fixture details EIA-364-45C Page 8 inch mm inch mm inch mm inch mm 0.125 3.18 0.500 12.70 7.000 177.80 11.000 279.40 0.190 4.

42、83 1.000 25.40 8.200 208.28 0.250 6.35 1.250 31.75 10.000 254.00 Note Dimensions are in inches. Unless otherwise specified, dimensions are symmetrical about centerline. Figure 3 Firewall connector fixture assembly EIA-364-45C Page 9 Figure 4 - Firewall connector test setup example 6.35 mm 0.51 mm (0

43、.250 in 0.020 in) 6.35 mm 0.51 mm (0.250 in 0.020 in) EIA-364-45C Page 10 Figure 5 Schematic circuit for testing firewall connectors ECIA 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

44、 the appropriate information below and mail or FAX to: Electronic Components Industry Association EIA Standards & Technology Department 2214 Rock Hill Rd., Suite 170 Herndon, VA 20170 FAX: (571-323-0245) Document No.: Document Title: Submitters Name: Telephone No.: FAX No.: e-mail: Address: Urgency

45、of Change: Immediate: At next revision: Problem Area: a. Clause Number and /or Drawing: b. Recommended Changes: c. Reason/Rationale for Recommendation: Additional Remarks: Signature: Date: FOR ECIA USE ONLY Responsible Committee: Chairman: Date comments forwarded to Committee Chairman: Revision Hist

46、ory Revision letter Project number Additions, changes and deletions B SP-5189 Retyped and reformatted. Added paragraphs 2.1.10 and 5.5. Revised paragraphs 4.4.4, 5.4, 5.5 6.2 and 6.5 C SP-5238 Revise title Revised paragraph 2.1.7, 2.1.9, 2.1.10, 5.4, 6.2 and figure 5. Deleted paragraph 5.5. Added metric conversion table and note to figure 3. Added metric units to figure 4. Electronic Components Industry Association 2214 Rock Hill Road, Suite 170 * Herndon, VA 20170 * tel 571-323-0294 * fax 571-323-0245 www.eciaonline.org