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Lightning
protection
Protections are compulsory for all circuits in:
Overhead lines
Cables that leave the general ground line
network
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Mounting rail
(for MTUs)
Ground connection to
cabinet chassis via
mounting screws
If problems, check R < 100 m
Ω
,
measured with equipment switched off
and cables disconnected
MTU
Ground connection
DIN rail mounting screws (100 mm
pitch) fully tightened
Connections
Quality
Only correctly made, screwed or
clamped connections are approved
Содержание S800 I/O
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