COBHAM SAILOR 60 GX, Руководство по установке

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Installation of the ADU
98-148248-C Chapter 3: Installation 3-21
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Install
ation
16. Where the cables are exposed to mechanical wear – on deck, through bulkheads, etc. –
protect the cables with steel pipes. Otherwise, follow standard procedures for cabling in
ship installations.
3.3.4 To ground the ADU
The ADU must be grounded using one of the mounting bolts.
To ground the ADU do as follows:
1. Clean the metal underneath the head of at least one bolt of insulating protective
coating and use a serrated washer to obtain a good ground connection
2. Tighten the bolt. Use stainless steel bolts and washers.
Tightening torque value: 30 Nm.
3. Seal the area suitably to avoid corrosion of the grounding point (recommended).
For optimum grounding connect the ground wire to the bolt marked in the figure below.
If the ADU cannot or should not be electrically connected directly to the mounting surface,
you can use a separate grounding cable to make the connection between the ADU and the
common ground to which the ACU is also connected. If grounding to the ship ground is
impossible, for example if you have a fibre glass hull, see
Alternative ground for fibre glass
hulls on page C-8. For further information on grounding and RF protection see the
appendix Ground and RF protection on page C-1.
Figure 3-22: ADU, thread for optimum grounding
282.8
R221 R238
18
73.5
200
200
220
226.4
THREAD for GROUNDING
M10 (depth: 22mm)