Wiring Of Main Power Supply And Equipment Capacity - Mitsubishi Electric PQHY-P-YHM-A Serie Manual De Instalación

11.4. Wiring of main power supply and equipment capacity

Schematic Drawing of Wiring (Example)
[Fig. 11.4.1] (P.13)
A Switch (Breakers for wiring and current leakage)
D Pull box
Thickness of wire for main power supply, capacities of the switch and system impedance
PQHY-P·YHM-A(-BS) Model
PQHY-P200YHM-A(-BS)
Heat source unit PQHY-P250YHM-A(-BS)
PQHY-P300YHM-A(-BS)
Total operating 16A or less
current of the 25A or less
indoor unit 32A or less
PQRY-P·YHM-A(-BS) Model
PQRY-P200YHM-A(-BS)
Heat source unit PQRY-P250YHM-A(-BS)
PQRY-P300YHM-A(-BS)
Total operating 16A or less
current of the 25A or less
indoor unit 32A or less
*1: Meets technical requirements of IEC61000-3-3
1. Use dedicated power supplies for the heat source 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. Specifi c wiring requirements should adhere to the wiring regulations of the region.
5. Power supply cords of parts of appliances for heat source use shall not be lighter than polychloroprene sheathed fl exible cord (design 245 IEC57).
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 specifi ed wires for connections and ensure no external force is imparted to terminal connections. If connections are not fi xed fi rmly,
heating or fi re 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 fi re.
Note:
• 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 fulfi ls 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 S
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 S
S (*2)
SC
Model S (MVA)
SC
PQRY-P200YHM
1.24
PQRY-P250YHM
1.35
PQRY-P300YHM
1.50
B Breakers for current leakage
E Indoor unit
Minimum wire thickness
(mm )
2
Main cable Branch Ground
4.0 - 4.0
4.0 - 4.0
4.0 - 4.0
1.5 1.5 1.5
2.5 2.5 2.5
4.0 4.0 4.0
Minimum wire thickness
(mm 2 )
Main cable Branch Ground
4.0 - 4.0
4.0 - 4.0
4.0 - 4.0
1.5 1.5 1.5
2.5 2.5 2.5
4.0 4.0 4.0
Model S (MVA)
SC
PQHY-P200YHM
1.24
PQHY-P250YHM
1.34
PQHY-P300YHM
1.49
C Heat source unit
F BC controller (standard or main)
Local switch
Breaker for current leakage
Capacity
30A 100mA 0.1sec. or less 25
30A 100mA 0.1sec. or less 25
30A 100mA 0.1sec. or less 25
20A 30mA 0.1sec. or less 16
30A 30mA 0.1sec. or less 25
40A 30mA 0.1sec. or less 32
Local switch
Breaker for current leakage
Capacity
30A 100mA 0.1sec. or less 25
30A 100mA 0.1sec. or less 25
30A 100mA 0.1sec. or less 25
20A 30mA 0.1sec. or less 16
30A 30mA 0.1sec. or less 25
40A 30mA 0.1sec. or less 32
is greater than or equal to S
SC
F' BC controller (sub)
Breaker
Max. Permissive
for wiring
System Impedance
Fuse (NFB)
25 30 *1
25 30 *1
25 30 *1
16 20 (apply to EN61000-3-3)
25 30 (apply to EN61000-3-3)
32 40 (apply to EN61000-3-3)
Breaker
Max. Permissive
for wiring
System Impedance
(NFB)
Fuse
25 30 *1
25 30 *1
25 30 *1
16 20 (apply to EN61000-3-3)
25 30 (apply to EN61000-3-3)
32 40 (apply to EN61000-3-3)
(*2) at the interface point between
SC
greater than or equal to S (*2).
SC SC
27