5.2 Connecting functional earthing
The earth lead must be at least 6.0 mm
2
. If the earth lead is long, the
cross section of the wire must be increased.
Use fine copper wire as the earth lead.
Use either the existing SPACOM relay earth lead or a newly delivered
earth lead.
1. Loosen the protective earth screw to connect a separate earth protection lead.
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Figure 22: The protective earth screw is located between connectors X100 and
X110
The earth lead should be as short as possible but notice that extra
length is required for door mounting.
Each protection relay must have its own earth lead connected to the
earth circuit connector.
2. Connect he earth lead to the earth bar.
Use either a stripped wire screwed between a washer cup and the protective
earth screw or a ring lug.
Select a suitable ring-lug to fit under the M4 screw.
3. Tighten the protective earth screw.
4TLB000504 A
Connecting
Installation Manual
31
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