2920 1454 00
14
Instruction book
2.2 Electric cable size
Attention
- Local regulations remain applicable if they are stricter than
the values proposed below.
- The voltage drop shall not exceed 5% of the nominal
voltage. It may be necessary to use cables with a larger
size than those stated to comply with this requirement.
- Use the original cable entrance ((2-Fig. 2.1).
- The voltage on the compressor terminals must not deviate
more than 10% of the nominal voltage.
50 Hz compressors
Compressor type GA18 VSD GA18 VSD GA18 VSD GA30 VSD GA30 VSD GA30 VSD
Voltage (V) . . . . . . . . . . . . . . . . . . . 400+N 400 500 400+N 400 500
Maximum line current
- Pack (A) . . . . . . . . . . . . . . . . . . . 51 51 36 68 68 56
- Full-feature (A) . . . . . . . . . . . . . . 56 59 40 73 77 60
Cable size (mm²) . . . . . . . . . . . . . . 25 25 25 50 50 50
Maximum fuse (A) . . . . . . . . . . . . . 63 63 63 80 80 80
60 Hz compressors
Compressor type GA18 VSD GA18 VSD GA30 VSD GA30 VSD
Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380 460 380 460
Maximum line current
- Pack (A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 37 71 60
- Full-feature (A) . . . . . . . . . . . . . . . . . . . . . . . 52 42 78 65
Cable size (mm²/AWG size). . . . . . . . . . . . . . . 25/4 25/4 50/1 50/1
Maximum fuse (A) IEC/CSA-UL . . . . . . . . . . 63/60 63/60 125/125 125/125
2.3 Installation proposal (Fig. 2.2)
Ref. Description/recommendation
L = (dP x d
5
x P) / (450 x Qc
1.85
)
L = pipe length in m
dP = maximum allowable pressure drop
(recommended 0.1 bar)
d = inner diameter of pipe in mm
P = compressor outlet pressure in bar absolute
Qc = free air delivery of compressor in l/s
Ref. Description/recommendation
1 Install the compressor on a level floor suitable for taking
the weight of the compressor.
2 Compressed air outlet valve.
3 The maximum total pipe length (including
interconnecting piping between compressor and
receiver) can be calculated as follows:
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