Basic Knowledge To Avoid Electric Shock - XCMG XDN450 Operation Manual

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1.9 Basic Knowledge to Avoid Electric Shock

1.9.1 Current can be conveyed underground through various ways.
1.9.2 Current can be conveyed to the equipment through various cables on the drill pipes,
flexiblepipes and machines.
1.9.3 Current with low voltage can also cause fatality.
1.9.4 Electric shock can be presumed and the machine should be shut down and examined if
the following situations occur:
1) power failure
2) smoulder
3) explosion
4) noise of burst
5) electricarc
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