w w w . a i r t e c h n i c . g r
Energy Box AC-Α, AC
13
ATHENS
+30 211 70 55 500 /
THES/NIKI
+30 2311 82 40 00 w w w . a i r t e c h n i c . g r
SELECTION OF ELECTRICAL CABLE
CROSS-SECTION (energy BOX AC-A / AC)
ENERGY-
BOX
AC-Α / AC
Unit
Voltage
(V)
Unit Power Input
(kW)
Current
(A)
Fuse
(A)
Cable Cross-
Section(mm²)
for 50M and PF=0,8
500
230
1,23
6,68
2 x 16
1,5
750
230
1,7
9,23
2 x 16
1,5
1.000
230
2,07
11,25
2 x 20
1,5
1.500
230
2,93
15,92
2 x 20
2,5
2.000
230
3,54
19,23
2 x 25
2,5
*3.000
400
Comp. 4,9 kW / Fan
1,36 kW
Comp. 8,85 A / Fan
7,39 A
3 x 20
1,5
*4.000
400
Comp. 7,45 kW / Fan
2,6 kW
Comp. 13,45 A / Fan
14,13 A
3 x 32
4
* Compressor 400V and fan 230V for ENERGY-BOX AC-Α/ENERGY-BOX AC 3.000 and 4.000 unit models.
CABLE CROSS-SECTION FORMULAS
1
I current ꞊
P
U.CosQ
I cable > I current
2
%e ꞊
100.P.L
k.S.U²
, S ꞊
100.P.L
k.%e.U²
%e ꞊ %3
3
I cable > I fuse ≥ I current
Cable Cross-Section S=Max
(S1, S2, S3, 1,5 mm²)
* It is suitable for units with 230V supply voltage.
P:
Power
I:
Current
U:
Voltage
S:
Conductor cross section
k:
Conductor coefficient
L:
Conductor length
%e:
The voltage drop
P:
1,23 kW
L:
50 m
U:
230 V
%e:
%3
PF: CosQ
: 0,8
k:
56 m/Ω
EXAMPLE OF CABLE CROSS-
SECTION CALCULATION
1
I current ꞊
1.230 W
230.0,8
꞊ 6,68 A
The cable will be used, is selected from
the cable cross-section table so that the
equivalent ampere value in the table should
be higher than calculated “I current” value.
S1 = 0,5 mm²
2
%e ꞊ %3
S ꞊
100.1.230.50
56.3.230²
꞊ 0,76 mm²
S2 ≥ 0,69 ≥ 0,75 mm²
S2 = 0,75 mm²
3
I cable > I fuse ≥ I current
I cable > 10 A > 6,68 A
“I fuse”, which will be higher than “I current”,
is selected.The cable will be used, is selected
from the cable cross-section table so that the
equivalent ampere value in the table should
be higher than selected “I fuse” value.
I cable =12 A
S3 = 0,5 mm²
Cable cross-section
S=Max (S1, S2, S3, 1,5 mm²)
S=Max (0,5, 0,75, 0,5, 1,5)
S=1,5 mm²
* It must be considered the above information for compressor calculation in ENERGY-BOX AC-Α / AC 3.000 and 4.000 unit models.
Содержание ENERGY BOX AC
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