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:
