Electrical Short Circuit/Arcing of Aged Aircraft Wiring

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$Atago Co., Ltd. Salinity Refractometer, Model S-10 Instruction Manual$

Figure 20. Test 2: Scintillations along the built up char path.Figure 21. Test 2: A Chemical combustion flame observed after a series of flashing events.Electrical Arcing of Aged Aircraft Wire.Lectromechanical Design CompanyReport No. N191-RPT4AU99 August 12, 199922
Figure 22. Test 1: Oscillogram showing intermittent current during a flashing event.Examination of the bundles after the tests shows that the damage and char build up wasover a 1/2 to 5/8 inch length of the wire bundle. In each test, the conductor of 2 (test 1) or3 (test 2) of the wires were eroded away up to ½ of an inch. In test 1 the eroded conductors werefrom wire [A1] and wire [B2] (wire [B2] was not originally damaged but must have becomedamaged soon after the start of the test.). In each test, two of the five previously undamagedwires failed a wet dielectric test. Figure 23 shows the sample from Test 2 after being removedfrom the arc tracking apparatus.Electrical Arcing of Aged Aircraft Wire.Lectromechanical Design CompanyReport No. N191-RPT4AU99 August 12, 199923
Page 3 and 4: Electrical Arcing of Aged Aircraft
Page 5 and 6: were placed between wires in small
Page 7 and 8: BackgroundArc tracking of aircraft
Page 9 and 10: EXPERIMENTAL PROCEDURESWet Arc Trac
Page 11 and 12: Figure 5. Circuit used in the metal
Page 13 and 14: Figure 8. Apparatus used for metal
Page 15 and 16: DESCRIPTION OF ELECTRICAL ACTIVITYT
Page 17 and 18: The voltage and current waveforms w
Page 19 and 20: Figure 15. Example of a strong arci
Page 21 and 22: RESULTSTable 1 lists the Test run g
Page 23 and 24: Table 3. Summary of Metal Shavings
Page 25 and 26: APPENDIX A: Description of Individu
Page 27: Test 1 & 2Wet Arc TrackingBundle: S
Page 31 and 32: Test 3Wet Arc TrackingBundle: Seven
Page 33 and 34: Figure 26. Test 3: Sample bundle af
Page 35 and 36: Figure 27. Test 4: Strong arcing on
Page 37 and 38: Test 6 & 7Wet Arc TrackingBundle: S
Page 39 and 40: Figure 32. Test 6: Sample bundle af
Page 41 and 42: Test 9:Bundle: Seven wires (6 over
Page 49 and 50: Figure 37. Test 14: Electrical powe
Page 51 and 52: Metal Shavings AbrasionTest 16 A &
Page 53 and 54: Test 17 & 192 Bundles: four wires e
Page 55 and 56: Figure 42. Test 17: Damage to wire
Page 57 and 58: Figure 44. Test 20: Damage done in
Page 59 and 60: Table 7. Description of alternate a

Electrical Short Circuit/Arcing of Aged Aircraft Wiring

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