Klein Tools HVNCVT1 Manuel D'utilisation page 9

taBLE R-7-aLtERnatIVE MInIMuM appROaCH DIStanCES
nominal voltage (kV)
phase-to-phase
72.6 to 121.0
121.1 to 145.0
145.1 to 169.0
169.1 to 242.0
242.1 to 362.0
362.1 to 420.0
420.1 to 550.0
550.1 to 800.0
Employers may use the minimum approach distances in this table provided the worksite is
1
at an elevation of 3,000 feet (900 meters) or less. If employees will be working at elevations
greater than 3,000 feet (900 meters) above mean sea level, the employer shall determine
minimum approach distances by multiplying the distances in this table by the correction factor
in OSHA's Table R-5 Altitude Correction Factor, corresponding to the altitude of the work.
Employers may use the phase-to-phase minimum approach distances in this table provided
2
that no insulated tool spans the gap and no large conductive object is in the gap.
The clear live-line tool distance shall equal or exceed the values for the indicated voltage ranges.
3
OpERatInG InStRuCtIOnS
fOR VOLtaGES Of MORE tHan 72.5 kV
phase-to-ground exposure phase-to-phase exposure
ft.
3.71
4.27
4.79
6.59
11.19
13.94
16.63
22.57
Distance
m
1.13
1.30
1.46
2.01 10.10
3.41 18.11
4.25 22.34
5.07 27.03
6.88 37.34
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1 2 3
ft. m
4.66 1.42
5.38 1.64
6.36 1.94
3.08
5.52
6.81
8.24
11.38