Hitachi RAS-8FSNM - Page 28

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Field Minimum Wire Sizes for Power Source
Model Power Supply
Maximum
Current
Power Source Cable Size
Transmitting
Cable Size
EN60 335-1 *1 MLFC *2
Shielded
Twist Pair
Cable
220V 60Hz
22 4.0mm
2
3.5mm
2
0.75mm
2
29 6.0mm
2
5.5mm
2
37 10.0mm
2
5.5mm
2
380-415V 50Hz
380V 60Hz
2.5mm
2
2.0mm
2
0.75mm
2
4.0mm
2
3.5mm
2
4.0mm
2
3.5mm
2
* Refer to the NOTES for selection of the power source cable size.
Table 6.1 Electrical Data and Recommended Wiring, Breaker Size/1 Outdoor Unit
Model Power Supply
Maximum
Running
Current
Power
Supply Line
ELB
Fuse
Nominal
Current
Nominal
Sensitive
Current
(A) (mm
2
) (A) (mA) (A)
220V 60Hz
22 MLFC3.5SQ 30 30 30
29 MLFC5.5SQ 40 30 40
37 MLFC5.5SQ 50 100 50
RAS-8FSNM(Q)
380V 60Hz
20.5
MLFC2.0SQ 30 30 30
RAS-10FSNM(Q)
MLFC3.5SQ 40 30 40
RAS-12FSNM(Q)
MLFC3.5SQ 40 30 40
ELB: Earthleakage Breaker, MLFC: Flame Retardant Polyex Wire
NOTES:
1) Follow local codes and regulations when selecting eld wires.
2) The wire sizes marked with *1 in the table of this page are selected at the maximum current of the unit according to the
European Standard, EN60 335-1. Use the wires which are not lighter than the ordinary tough rubber sheathed exible
cord (code designation H05RN-F) or ordinary polychloroprene sheathed exible cord (code designation H05RN-F).
3) The wire sizes marked with *2 in the table of this page are selected at the maximum current of the unit according to the
wire, MLFC (Flame Retardant Polyex Wire) manufactured by Hitachi Cable Ltd., Japan.
4) Use a shielded cable for the transmitting circuit and connect it to ground.
5) In the case that power cables are connected in series, add each unit maximum current and select wires below.
Selection According to EN60 335-1 Selection According to MLFC (at Cable Temperature of 60
o
C)
Current i (A) Wire Size (mm
2
) Current i (A) Wire Size (mm
2
)
i ≤ 6 0.75 i ≤ 18 0.75 *3: In the case that
6 < i ≤ 10 1 18 < i ≤ 24 1.25 current exceeds 63A,
10 < i ≤ 16 1.5 24 < i ≤ 34 2 use MLFC cables.
16 < i ≤ 25 2.5 34 < i ≤ 47 3.5
25 < i ≤ 32 4 47 < i ≤ 62 5.5
32 < i ≤ 40 6 62 < i ≤ 78 8
40 < i ≤ 63 10 78 < i ≤ 113 14
63 < i *3 113 < i ≤ 147 22
147 < i ≤ 179 30
Install a multi-pole main switch with a space of 3.5mm or more between each phase.
NOTE:
The maximum current value above is for the single wiring only.
However, the power source wirings are bundled together in the actual eld wiring installation. In this case, the maximum
current value of the wiring is decreased of 50 to 70% due to the heat generation of wiring during the operation.
Therefore, follow Table 6.1 for the eld wiring.
22
26
26
20.5
26
26
RAS-8FSNM(Q)
RAS-10FSNM(Q)
RAS-12FSNM(Q)
RAS-8FSNM(Q)
RAS-10FSNM(Q)
RAS-12FSNM(Q)
RAS-8FSNM(Q)
RAS-10FSNM(Q)
RAS-12FSNM(Q)
380-415V 50Hz