Electrical Short Circuit/Arcing of Aged Aircraft Wiring

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

Figure 31. Test 6: Electrical power dissipated during a flash event.The oscilloscope recording showed that some of the more active flash events had arcingwaveforms up to 20 continuous cycle (.05 seconds) with power peaks in the 3 to 6 kW range(Figure 31). The electrical energy dissipated in the event shown in Figure 31 was about 90joules.Examination of the bundles after the tests revealed the same type of as that found in Tests1 and 2 but not to as high an extent, probably because these bundles were not tested as long(Figure 32).The DC electrical conductivity of the of the lavatory waste water, the 1% saline solutionand distilled water were measured for comparison. The results are given in Table 6.Table 6. DC conductivity of electrolytes and distilled water.LiquidConductivity (mmho/m)Used lavatory waste water 321 % saline solution 40Distilled water 1.6Electrical Arcing of Aged Aircraft Wire.Lectromechanical Design CompanyReport No. N191-RPT4AU99 August 12, 199932
Figure 32. Test 6: Sample bundle after wet arc track testing with lavatory waste water for 10minutes.Electrical Arcing of Aged Aircraft Wire.Lectromechanical Design CompanyReport No. N191-RPT4AU99 August 12, 199933
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 and 28: Test 1 & 2Wet Arc TrackingBundle: S
Page 29 and 30: Figure 22. Test 1: Oscillogram show
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: Test 6 & 7Wet Arc TrackingBundle: S
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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