1. Electrical work
YKB/YLM 2nd
4 - 74
S.D. R2
MEE15K022
PURY-EP-YLM-A1
Thickness of wire for main power supply, capacities of the switch and system impedance
Model
Minimum wire thickness (mm
2
)
Ground-fault interrupter *1
Local switch (A)
Breaker for wiring (A)
(Non-fuse breaker)
Max. Permissive
System Impedance
Main cable
Branch
Ground
Capacity
Fuse
Outdoor unit
PURY-EP200YLM-A1
4.0
-
4.0
30A 100mA 0.1sec. or less
25
25
30
*2
PURY-EP250YLM-A1
4.0
-
4.0
30A 100mA 0.1sec.
or less
32
32
30
*2
PURY-EP300YLM-A1
4.0
-
4.0
30A 100mA 0.1sec.
or less
32
32
30
*2
PURY-EP350YLM-A1
6.0
-
6.0
40A 100mA 0.1sec.
or less
40
40
40
0.23
PURY-EP400YLM-A1
10.0
-
10.0
60A 100mA 0.1sec.
or less
63
63
60
0.20
PURY-EP450YLM-A1
10.0
-
10.0
60A 100mA 0.1sec.
or less
63
63
60
0.19
PURY-EP500YLM-A1
10.0
-
10.0
60A 100mA 0.1sec.
or less
63
63
60
0.15
Total operating current of
the indoor unit
F0 = 20A or less *3
1.5
1.5
1.5
Current sensitivity *4
16
16
20
(apply to IEC61000-3-3)
F0 = 30A or less *3
2.5
2.5
2.5
Current sensitivity *4
25
25
30
(apply to IEC61000-3-3)
F0 = 40A or less *3
4.0
4.0
4.0
Current sensitivity *4
32
32
40
(apply to IEC61000-3-3)
*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 Others)/C}
Indoor unit
V1
V2
Type1
PLFY-VBM, PMFY-VBM, PEFY-VMS, PCFY-VKM,
18.6
2.4
Type2
PEFY-VMA
38
1.6
Type3
PEFY-VMHS
13.8
4.8
Others
Other indoor unit
0
0
C:
Multiple of tripping current at tripping time 0.01s
Please pick up "C" from the tripping characteristic of the breaker.
<Example of "F2" calculation>
*Condition PEFY-VMS × 4 + PEFY-VMA × 1, C = 8 (refer to right sample chart)
F2 = 18.6 × 4/8 + 38 × 1/8
= 14.05
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 Others) + (V3 × Wire length [km])
G1
Current sensitivity
Wire thickness
V3
30 or less
30 mA 0.1sec or less
1.5 mm
2
48
100 or less
100 mA 0.1sec or less
2.5 mm
2
56
4.0 mm
2
66
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.
20
C
10
8
6
4
3
2
1
0.01
0.1
1
10
60
600
6000
SAMPLE
Tri
p
ping Tim
e
[
s
]
Rated Tripping current (x)
Sample chart
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-S 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.
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)
PURY-EP200YLM-A1
1.39
PURY-EP250YLM-A1
1.77
PURY-EP300YLM-A1
2.19
PURY-EP350YLM-A1
2.64
PURY-EP400YLM-A1
2.98
PURY-EP450YLM-A1
3.26
PURY-EP500YLM-A1
3.98
