Hitachi RPC-3.0FSN3 - Electrical Wiring Capacity; Field Minimum Wire Sizes for Power Source

22
P5416543
Model
Power
Source
Maximum
Current
Power Source Cable Size Transmitting Cable Size
IEC 60335-1 *1 MLFC *2 IEC 60335-1 *1 MLFC *2
RPC-1.5FSN3
RPC-2.0FSN3
RPC-2.5FSN3
RPC-3.0FSN3
RPC-4.0FSN3
RPC-5.0FSN3
RPC-6.0FSN3
220-240V/1
f
/50Hz
220V/1
f
/60Hz
5A 0.75mm
2
0.5mm
2
0.75mm
2
0.5mm
2
7.2 Electrical Wiring Capacity
7.2.1 Field Minimum Wire Sizes for Power Source
•
Use an ELB (Earth Leakage Breaker).
If not used, it will cause an electric shock or a re.
•
Do not operate the system until all the check points have been cleared.
(A) Check to ensure that the electrical resistance is more than 1 megohm, by measuring the resistance
between ground and the terminal of the electrical parts. If not, do not operate the system until the
electrical leakage is found and repaired.
(B) Check to ensure that the stop valves of the outdoor unit are fully opened, and then start the system.
(C) Check to ensure that the switch on the main power source has been ON for more than 12 hours, to
warm the compressor oil by the crankcase heater.
•
Do not touch any of the parts by hand at the discharge gas side, since the compressor chamber and the
pipes at the discharge side are heated higher than 90
o
C.
NOTES:
1) Follow local codes and regulations when selecting eld wires.
2) The wire sizes marked with *1 in the above table are selected at the maximum current of the unit according to the
European Standard, IEC 60335-1. 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 above table 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 IEC 60335-1 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 < 15 0.5 *3: In the case that
6 < i < 10 1 15 < i < 18 0.75 current exceeds 63A,
10 < i < 16 1.5 18 < i < 24 1.25 do not connect cables
16 < i < 25 2.5 24 < i < 34 2 in series.
25 < i < 32 4 34 < i < 47 3.5
32 < i < 40 6 47 < i < 62 5.5
40 < i < 63 10 62 < i < 78 8
63 < i *3 78 < i < 112 14
112 < i < 147 22