10-3.Power Cable Specifications - Mitsubishi Electric CITY MULTI PUHY-M200-300YNW-A1 Data Book

Air conditioning systems

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10. ELECTRICAL WORK

10-3. Power cable specifications

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

Model

Outdoor unit

PUHY-(E)M200YNW-A1

PUHY-(E)M250YNW-A1

PUHY-(E)M300YNW-A1

Total operating current of

F0 = 20A or less *3

the indoor unit

F0 = 30A or less *3

F0 = 40A or less *3

*1 The Ground-fault interrupter should support Inverter circuit. The Ground-fault interrupter should combine using of local switch or wiring breaker.

*2 Meet technical requirements of IEC61000-3-3

*3 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 Type1)/C} + {V1 × (Quantity of Type2)/C} + {V1 × (Quantity of Type3)/C} + {V1 × (Quantity of Type4)/C}

Indoor unit

Type1

PEFY-VMA

Type2

PLFY-VEM

C: Multiple of tripping current at tripping time 0.01s

Please pick up "C" from the tripping characteristic of the breaker.

*Condition PEFY-VMA × 4 + PLFY-VEM × 1, C = 8 (refer to right sample chart)

F2 = 18.6 × 4/8 + 17.1 × 1/8

= 11.44

→16 A breaker (Tripping current = 8 × 16 A at 0.01s)

*4 Current sensitivity is calculated using the following formula.

G1 = (V2 × Quantity of Type1) + (V2 × Quantity of Type2) + (V2 × Quantity of Type3) + (V2 × Quantity of Type4)

Current sensitivity

30 or less

30 mA 0.1sec or less

100 or less

100 mA 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%. Make sure that the voltage imbalance between the phases is 2% or less.

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 60245 IEC57). For example, use wiring such as YZW.

6. A switch with at least 3 mm contact separation in each pole shall be provided when the Air Conditioner is installed.



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.

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Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.

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The breakers for current leakage should support Inverter circuit. (e.g. Mitsubishi Electric's NV-S-Series or equivalent). If no earth leakage breaker is installed, it may cause an electric shock.

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Breakers for current leakage should combine using of switch.



Do not use anything other than a breaker with the correct capacity. Using a breaker of too large capacity may cause malfunction or fire.

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If a large electric current flows due to malfunction or faulty wiring, earth-leakage breakers on the unit side and on the upstream side of the power supply system may both operate.

Depending on the importance of the system, separate the power supply system or take protective coordination of breakers.



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-M200YNW-A1

1.25

PUHY-M250YNW-A1

1.38

PUHY-M300YNW-A1

1.76

MEES19K116

Minimum wire thickness (mm