Specifications
87
Thickness of wire for main power supply, capacities of the switch and system impedance
1. Use dedicated power supplies for the outdoor unit and indoor unit. Ensure OC and OS are wired individually.
2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
3. The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one rank thicker in diameter.
Make sure the power-supply voltage does not drop more than 10%.
4. Specific wiring requirements should adhere to the wiring regulations of the region.
5. Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 245 IEC57). For example,
use wiring such as YZW.
6. A switch with at least 3 mm contact separation in each pole shall be provided by the Air Conditioner installer.
Warning:
Be sure to use specified wires for connections and ensure no external force is imparted to terminal connections. If connections are not fixed firmly, heating
or fire may result.
Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
Some installation sites may require attachment of an earth leakage breaker for the inverter. If no earth leakage breaker is installed, there is a danger of
electric shock.
Do not use anything other than a breaker and fuse with the correct capacity. Using a fuse or wire of too large capacity may cause malfunction or fire.
30
40
60
20
20
32
40
63
16
16
32
40
63
16
16
4.0
6.0
10.0
1.5
1.5
4.0
6.0
10.0
10.010.0
1.5
1.5
Main cable
Local swtich (A)
Minimum wire thickness (mm
2
)
Branch Capacity Fuse
Outdoor unit
-
-
-
-
-
Breaker for
wiring (NFB) (A)
Ground
indoor unit
PUHY-P250YHA
PUHY-P350YHA
PUHY-P400YHA
Model
30A 100mA 0.1sec. or less
40A 100mA 0.1sec. or less
60A 100mA 0.1sec. or less
20A 30mA 0.1sec. or less
20A 30mA 0.1sec. or less
Breaker for current leakage
PFAV-P300-F
20
16 16
1.5
1.5
-
20A 30mA 0.1sec. or less
PFAV-P250
40
32 32
4.0
4.0
-
40A 100mA 0.1sec. or less
PFAV-P500
5050 50- 50A 100mA 0.1sec. or lessPFAV-P750
PFAV-P600-F
3032 204.04.0 - 30A 30mA 0.1sec. or lessPFAV-P900-F
*
0.27Ω
0.22Ω
(apply to IEC61000-3-3)
(apply to IEC61000-3-3)
(apply to IEC61000-3-3)
Max. Permissive
System Impedance
(apply to IEC61000-3-3)
(apply to IEC61000-3-3)
(apply to IEC61000-3-3)
* Meet technical requirements of IEC61000-3-3
This device is intended for the connection to a power supply system with a maximum permissible system impedance shown in the above table at the interface point
(power service box) of the user's supply.
The user must ensure that this device is connected only to a power supply system which fulfils the requirement above.
If necessary, the user can ask the public power supply company for the system impedance at the interface point.
This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc(*2) at the interface point between the user's supply
and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the
equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to Ssc(*2).
Ssc(*2)
Model
PUHY-P250YHA
PUHY-P350YHA
PUHY-P400YHA
Ssc(MVA)
1.41
2.08
2.48
2. Electrical work
(1) Power cable specifications