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时间:2011-03-27 22:14来源:蓝天飞行翻译 作者:航空
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C. Switches Do a check of the rear protection cap for damage.
 D. Splices and Terminals Do a check for damage on:
 -
the insulation,

 -
the tongue,

 -
the barrel,

 -
the retaining sleeve.


 E. Ground Points Make sure that:
 -you can see the tightening marks,
 -there is no corrosion.


20-52-11 Page 5

 F. Bonding Braids Make sure that:
 -the bonding braids are in position,
 -you can see the tightening marks,
 -there is no corrosion on braid wires,
 -the braid wires are not broken.
 G. Identifications Make sure that:
 -the identifications are in position,
 -you can read the markings,
 -the identifications are correctly bonded,
 -you can see the tightening marks.
 H. Wiring Supports or Clamps Do a check of the general condition:
 -presence,
 -protection,
 -rupture,
 -corrosion,
 -deformation,
 -position,
 -attachment (missing or incorrect).
 J. Metal Supports - Tubes or Rails Do a check of the general condition:
 -protection (missing or damaged),
 -rupture,
 -deformation,
 -missing attachment.
 K. Terminal Blocks Do a check of the general condition:
 -incorrect tightening of terminals,
 -damaged dielectric protection.
 ____
NOTE : If you find damage during the visual check, it is necessary to repair the defective component(s). Refer to the applicable Repair Processes chapters.


20-52-11 Page 6

 _________________________________________
MANUAL CHECKS - DESCRIPTION AND OPERATION
 _______
1. General
 This chapter gives the general inspection checks applicable to the different electrical installation components.
 ______
2. Checks Do a manual check of these components.
 A. Dundle attachment
 (1)
 V-supports
 Make sure that the size of the support is correct


 -
if the support is too large, add glass tape ASNA5107 on the periphery of the bundle (2 turns minimum)

 -
if the support is too small, add a bushing NSA5539 or a round bar (dia. 1.5 mm (0.0590 in.) or 3 mm (0.1181 in.), 20 mm (0.7874 in.) length) at the bottom part of the support.

 

 (2)
 Clamps Make sure that the bundle (or the convoluted conduit) does not move in the clamp when you apply a light force to the bundle.


 If the bundle moves:
 -remove the clamp,
 -install a smaller diameter clamp or add glass tape ASNA5107 on the bundle.
 If the convoluted conduit moves:
 -remove the clamp,
 -add glass tape on the conduit,
 -install a smaller clamp.
 B. Loss of segregation
 This can occur when there is extra length on the cable.

 (1) EFCS (if installed) or engine parallel routes Measure the distance between the two routes. The distance must be 25 mm (0.9842 in.) or more at all locations; this includes areas where there is cable deflection.
 If the distance is less than 25 mm (0.9842 in.):
 -distribute the extra length along the harness, or
 -use a sleeve ABS0596 on one of the two routes, attached with cable ties NSA935401 at level of the non-conformity. (Ref. Fig. 001)


20-52-12 Page 1

 Loss of Segregation
 Figure 001

 

20-52-12 Page 2

 (2) Parallel routes other than EFCS (if installed) or engine Measure the distance between the two routes. The distance must be 25 mm (0.9842 in.) or more at all locations; this includes areas where there is cable deflection.
 If the distance is less than 25 mm (0.9842 in.):
 -distribute the extra length along the harness, or
 -add a spacer ABS0054 attached with cable ties
 (Ref. Fig. 001)

 (3) EFCS (if installed) or engine perpendicular routes Measure the distance between the two routes. The distance must be 25 mm (0.9842 in.) or more at all locations; this includes areas where there is cable deflection.
 If the distance is less than 25 mm (0.9842 in.):
 -distribute the extra length along the harness, or
 -use a sleeve ABS0596 on one of the two routes , attached with cable ties. (Ref. Fig. 002)
 (4) Parallel routes other than EFCS (if installed) or engine Measure the distance between the two routes. the distance must be 25 mm (0.9842 in.) or more at all locations; this includes areas where there is cable deflection.
 If the distance is less than 25 mm (0.9842 in.):
 -distribute the extra length along the harness, or
 
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本文链接地址:A320 ESPM Electrical Standard Practices Manual 4(63)