AirTechnic ENERGY BOX - TO 350 Manual de montagem e manutenção - Página 9

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SELECTION OF ELECTRICAL CABLE CROSS-SECTION

Unit Model
ENERGY BOX - TO
350
780
930
1.440
1.800
2.440
2.780
3.500
4.650
5.735
Cable Cross-Section Formulas
1
P
I
=
current
U.CosQ
I
>
I
cable
current
2
100.P.L
100.P.L
S ,
%e
=
=
k.S.U²
k.%e.U²
%e=%3
3
I
> I
> I
cable
fuse
current
Cable Cross-Section S=Max (S1, S2, S3, 1.5mm²)
P
:
Power
:
I
Current
:
U
Voltage
:
S
Conductor cross section
:
k
Conductor coefficient
:
Conductor length
L
:
%e
The voltage drop
+30.211.70.55.500
Unit Voltage
Unit Power Input
(V)
(kW)
230
230
230
0,45
230
0,45
230
1,03
230
1,03
230
0,94
230
230
1,36
230
+30.210.22.23.283
Current
(A)
0,1
1
0,2
1
0,3
2
3
3
6
6
6
8
2,6
14,2
Example of Cable Cross-Section Calculation
1
I
current
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
S1 = 1.5 mm²
2
%e=%3
100.2600.50
S
=
S2 > 1.46 mm² > 1.5 mm²
S2 = 1.5 mm²
3
I
cable
I
cable
"I
"which will be higher than "I
fuse
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
I
cable
S3 = 1.5 mm²
Cable cross-section S=Max (S1, S2, S3, 1.5 mm²)
S=Max (1.5, 1.5, 1.5, 1.5)
S=1.5 mm²
Fuse
Cable Cross - Section (mm²)
(A)
for 50M and PF=0,8
1
2
3
3
3
10
10
10
10
16
P
:
2,6 kW
:
U
230V
PF
:
CosQ : 0,8
2600 W
14.2 A
=
=
230.0,8
" value.
current
1.46 mm²
=
56.3.230²
> I
> I
fuse
current
> 16A > 14.2A
" value.
fuse
= 24A
1,5
1,5
1,5
1,5
1,5
1,5
1,5
1,5
1,5
1,5
L
:
50m
:
%3
%e
k
:
56m /
", is selected.
current
9