MEES19K180
PURY-H
P-
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S)NU-
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NU-A
79
10. ELECTRICAL WORK
Hyper Heating Inverter R2-Series
10-3. Power cable specifications
Thickness of wire for main power supply, capacities of the switch and system impedance
3-phase 3-wire, 208/230V, 60Hz
Minimum cable size [mm
2
(AWG)]
Breaker for current leakage
Main cable
Ground
208V
230V
208V
230V
208V
230V
PURY-HP-TNU-A
HP72
21.2 (4)
13.3 (6)
21.2 (4)
13.3 (6)
60A 100mA 0.1sec. or less
50A 100mA 0.1sec. or less
HP96
21.2 (4)
21.2 (4)
21.2 (4)
21.2 (4)
70A 100mA 0.1sec. or less
60A 100mA 0.1sec. or less
HP120
21.2 (4)
21.2 (4)
21.2 (4)
21.2 (4)
70A 100mA 0.1sec. or less
60A 100mA 0.1sec. or less
3-phase 3-wire, 460V, 60Hz
Minimum wire thickness [mm
2
(AWG)]
Breaker for current leakage
Main cable
Branch
Ground
460V
PURY-HP-YNU-A
HP72
5.3 (10)
-
5.3 (10)
25A 30mA or 100mA 0.1sec. or less
HP96
5.3 (10)
-
5.3 (10)
30A 30mA or 100mA 0.1sec. or less
HP120
8.4 (8)
-
8.4 (8)
35A 30mA or 100mA 0.1sec. or less
1. Use dedicated power supplies for the outdoor 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 245 IEC57). For example, use
wiring such as YZW.
6. A switch with at least 3 mm [1/8 in.] contact separation in each pole shall be provided by the Air Conditioner installer.
7. For details on indoor unit wiring and breaker for current leakage, refer to the indoor unit Instruction Book and Installation Manual.
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.
The breakers for current leakage should support Inverter circuit. (e.g. Mitsubishi Electric's NV-C-Series or equivalent). If no earth leakage breaker is installed, it
may cause an electric shock.
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.
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.
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