Instruction book
1904 0504 83
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• For supply cables larger than 35 mm²: half the size of the supply wires
Always check the voltage drop over the cable (less than 5 % of the nominal voltage is
recommended).
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+
I
tot
= 89 A, maximum ambient temperature is 45 °C,
recommended fuse = 100 A
• Single supply cables (3 phases + PE - configuration (1)):
• I = 89 A + 10 % = 89 x 1.1 = 97.9 A
• The table for B2 and ambient temperature = 45 ° C allows a maximum current of 93 A for
a 50 mm² cable. For a cable of 70 mm², the maximum allowed current is 118 A, which is
sufficient. Therefore, use a 3 x 70 mm² + 35 mm² cable.
If method C is used, 50 mm² is suffficient. (35 mm² for method F) => cable 3 x 50 mm² + 25
mm².
• Parallel supply cable (2 x 3 phases + PE - configuration (2)):
• I = (89 A + 10 %)/2 = (89 x 1.1)/2 = 49 A
• For a cable of 25 mm², B2 at 45 °C, the maximum current is 63 A x 0.8 = 50.4 A. So 2
parallel cables of 3 x 25 mm² + 25 mm² are sufficient.
• Install 50 A fuses on each cable instead of 100 A.
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IEC
50 400 3.0 3.6
50 380 2.6 3.9
60 460 2.6 3.5
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The regulating and safety devices are factory-adjusted to give optimum performance of the dryer.
Do not alter the setting of any of the devices.
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