1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 06 27 Revised Para 3.0 inserted; Para 3.5 after the bend test, the cable shall be subjected to the dielectric test, para 3.3.2. 3.3.5 Cold Resistance No cracking or failure. Test Method: A straight specimen shall be subjected to a tempera
2、ture of -40 C for 3 h. While still at this low temperature, the cable shall be wrapped 180 around a 3 in (76 mm) mandrel, at a uniform rate of one turn in 10 s. The insulation shall be removed for a distance of 1 in (25 mm) from each end of the specimen and the specimen subjected to the dielectric t
3、est, para 3.3.2. 3.3.6 Flame Test A bunsen burner having a 0.5 in (13 mm) inlet, a nominal bore of 0.375 in (9.53 mm), a length of approximately 4 in (102 mm), above the primary inlets, equipped with a wing-top flame spreader having a 1/16 x 2 in (1.6 x 51 mm) opening fitted to the top of the burner
4、 shall be used. A 24 in (610 mm) sample shall be suspended taut in a horizontal position within a partial enclosure which allows a flow of sufficient air for complete combustion but is free from drafts. The top of a 2 in (51 mm) gas flame with an inner cone one-third its height shall then be applied
5、 to the center of the suspended cable. The time of application of the flame shall be 15 s. After removal of the bunsen burner flame, the specimen shall not continue to burn for more than 30 s. 3.3.7 Abrasion Resistance, min 18 in (457 mm) of tape and still pass dielectric test. Test Method: Using we
6、ight support bracket and a 1 lb (0.45 kg) weight test per SAE J 1128. After the abrasion test subject specimen to dielectric test, para 3.3.2. 3.3.8 Ozone Resistance Must meet ESB-M9P1-A (FLTM BP 101-01) 3.4 FINISHED RESISTOR ASSEMBLY 3.4.1 Length The finished assembly shall be approximately 60 in (
7、1.5 m), but will vary according to the specific resistance of the unit, which must be maintained as specified in para 3.4.3. ENGINEERING MATERIAL SPECIFICATIONESB-M2L35-APrinted copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 4 of 4 3.4.2 Termination Shall be as specified
8、 on engineering drawing of affected assembly. They will be crimped to the conductor and shall not pull off when subjected to 30 lb (133 N) pull test. This requirement shall not apply where terminal performance is otherwise specified in engineering specification COAF-14A121-A. 3.4.3 Resistance A spec
9、ific resistance of 1.30 to 1.40 Ohm at 22 +/- 3 C measured terminal to terminal is required for each finished resistor assembly. The resistance of the finished resistor assembly when measured through the range of -40 C to 93 C shall not vary more than +/- 0.01 Ohm from its original value measured at
10、 22 +/- 3 C. 3.4.4 Performance Test A resistor assembly shall be capable of carrying 3A d-c, for 1000 h at 66 +/- 1 C without any evidence of deterioration. After the specimen is cooled to 22 +/- 3 C, it is wrapped around a 3 in (76 mm) mandrel at the rate not to exceed one complete turn/min and then subjected to the dielectric test in para 3.3.2. At the conclusion of the performance test, the measured resistance of the specimen at 22 +/- 3 C shall not vary more than +/- 0.01 Ohm from its original value.
