Motorola DIMETRA MTS 2, Инструкция по установке, настройке и базовому обслуживанию

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Grounding Requirements Chapter 3: Site Preparation
Figure 3-7 Opto-isolated Alarm Input Structure
Grounding Requirements
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The methods and standards cited in the following paragraphs are typical. Local codes, statutes,
regulations, and/or standards shall supersede any information provided herein, as applicable.
The MTS site must meet certain specifications for adequate protection from
lightning induced transients. Proper ground installation methods are outlined
in the Motorola Standards and Guidelines for Communications Sites, R56. The
references cited earlier in this chapter shall also be followed.
Cabinet grounding wires may have been installed prior to cabinet installation. If
so, follow the instructions below.
Single-point ground method (where each cabinet is grounded to master ground using its own
ground wire) shall be used. Equipment cabinet shall use green (or green-yellow) insulated wire
with a minimum size of 16 mm
2
CSA (6 AWG) for ground wire.
Any external -48 VDC power system should be grounded in accordance with manufacturer’s
instructions and any applicable local regulations.
3-22
6802800U74-N September 2009