1-3.Power Cable Specifications - Mitsubishi Electric PUHY-RP-Y(S)JM-B Data Book

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1. Electrical work

1-3. Power cable specifications

Thickness of wire for main power supply, capacities of the switch and system impedance

Model

PUHY-RP200YJM-B

PUHY-RP250YJM-B

Outdoor unit

PUHY-RP300YJM-B

PUHY-RP350YJM-B

F0 = 20 or less *2

Total operating

current of

F0 = 30 or less *2

the indoor unit

F0 = 40 or less *2

*1 Meets technical requirements of IEC61000-3-3

*2: Please take the larger of F1 or F2 as the value for F0.

F1 = Total operating maximum current of the indoor units × 1.2

F2 = (V1 × Quantity of Type A) + (V1 × Quantity of Type B) + (V1 × Quantity of Others)

*3: Current sensitivity is calculated using the following formula.

G1 = (V2 × Quantity of Type 1) + (V2 × Quantity of Type 2) + (V2 × Quantity of Others) + (V3 × Wire length [km])

Current sensitivity

30mA or less

30mA 0.1sec. or less

100mA or less

100mA 0.1sec. or less

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.

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.

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.

Check the existing wires for damage to insulation by measuring the resistance between the lead and the ground with a 500V ohmmeter. If the insulation resistance is less than 100 MΩ,

replace the wires.

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

Ssc(MVA)

PUHY-RP200YJM

1.25

PUHY-RP250YJM

1.54

PUHY-RP300YJM

1.75

PUHY-RP350YJM

2.31