12 BA-en-3018-2006_KNH18
3.3 Installation of the high voltage cables
In case of fixed installations a minimum bending radius of 5 times the
external diameter must be maintained and in case of dynamic installa-
tions a minimum bending radius of 10 times the external diameter must be
maintained when routing the high voltage cable.
• Do not route the cable over sharp edges (bending radius <5 mm).
• Keep a minimum spacing of 50 mm between low voltage and high
voltage cables; if this cannot be done, shield the low voltage cable.
• If the high voltage cables are led through bores in conductive, grounded
materials, the minimum bore diameter D is calculated as follows from
the wall thickness of the material:
D = 60 mm²/wall thickness.
Allow the biggest possible radius for the edges of the bore hole. Use an
insulating grommet to centre the cable.
• If ungrounded and conductive objects are placed near (2m) the high
voltage cable, influenced charges and sparking must be expected.
Proper ground connection is therefore important.
In applications using movable bars (e.g. film draw strips), attach the high
voltage cables such that there is no cable movement near the connection
point to the generator/power supply.
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