4 During the preliminary preparation work of the electricity supply line for the unit, the provisions in local and national
legislation must never be violated.
5 Check that the earth cable is correctly connected.
D A N G E R
• Never connect the earth cable to the refrigerant pipes. The gas in the pipes could cause a fire.
• Do
not
connect the earth cable to the lighting rod. The electrical potential of earth would increase
abnormally.
4.1.3 Connection of the power supply circuits
¿ Cable sizes
Outdoor units:
Model Supply voltage
Maximum
current
(A)
Cross section of the power cable
Cross section of the service
cable
EN60 335-1 (mm
2
)
(1)
MLFC (mm
2
)
(2)
EN60 335-1
(mm
2
)
(1)
MLFC (mm
2
)
(2)
RAS-8FSXN
3N~ 400V 50Hz
12 2.5 2.0
0.75 0.75
RAS-10FSXN 16 2.5 2.0
RAS-12FSXN 22 6 3.5
RAS-14FSXN 26 6 5.5
RAS-16FSXN 29 10 5.5
RAS-18FSXN 31 10 8
(1)
The
cross-sections of the cable should be selected for the maximum current of the unit, in accordance with European
Standard EN60 335-1.
(2)
The cross-sections of the cable have been selected for the maximum current of the unit, in accordance with MLFC cable
(Flame Retardant Polyflex Wire) manufactured by HITACHI Cable Ltd., Japan.
N O T E
Do not use cables that are lighter than the normal flexible coated polychloroprene cable (code H05RN-F).
¿ Main breaker switch
Model Supply voltage
Maximum
current (A)
ELB
(1)
CB
(2)
Rated current (A) Sensitivity (mA) Rated current (A)
RAS-8FSXN
3N~ 400V 50Hz
12 40 30 20
RAS-10FSXN 16 40 30 20
RAS-12FSXN 22 40 30 30
RAS-14FSXN 26 40 30 40
RAS-16FSXN 29 63 30 40
RAS-18FSXN 31 63 30 50
(1)
ELB: earth leakage breaker (field-supplied).
(2)
CB: circuit breaker (field-supplied).
¿
Voltage supply
Service voltage
Between 90 and 110% of the rated voltage.
Start-up voltage
Between 85 and 115% of the rated voltage.
4 Electrical wiring
73
SMGB0065 rev. 1 - 12/2010
4
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