29
VG79D920H01
en
・
Wiring example
Ⓑ
Ⓐ
Ⓒ
Ⓓ
Ⓐ
Earth leakage breaker
Ⓑ
Local switch (Overcurrent breaker and earth
leakage breaker)
Ⓒ
Outdoor unit
Ⓓ
Earth
・
Be sure to use the appropriate type of overcurrent breaker. Note that generated overcurrent may include some
amount of direct current.
・
Select the type of breaker for an inverter circuit as an earth leakage breaker. (Mitsubishi Electric NV-S series or its
equivalent)
・
The earth leakage breaker should be used in combination with a local switch.
・
Use a local switch with at least 3 mm (1/8 in) contact separation in each pole.
・
Do not connect the power cables L1, L2, and L3 to N. Ensure the correct phase sequence.
・
If the power cable is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
・
Use dedicated power cables for the outdoor unit. Ensure OC and OS are wired individually.
・
Power cable size, device capacity, and system impedance
(If local regulations do not specify the minimum power cable size or device capacity, follow the values in the table
below.)
Minimum size [mm
2
(AWG)]
Earth leakage breaker
Local switch (A)
Overcurrent
breaker
(NFB) (A)
Maximum
allowable
system
impedance
Power
cable
Power cable
after branching
point
Earth
wire
Capacity
Fuse
Outdoor
unit
m-MOCU-G02-050 10.0 (8)
–
10.0 (8) 60 A 100 mA 0.1 sec.
or less
63
63
60
0.19 Ω
・
Refer to the manual for the connected indoor unit for the power cable work on the indoor unit.
・
The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one size 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.
・
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.
・
This unit 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 unit 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 unit complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc*
1
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*
1
.
*1 Ssc
Model
Ssc (MVA)
m-MOCU-G02-050
3.24
3N~380–415 V
L1, L2, L3, N
