Mitsubishi Electric CITY MULTI PURY-P-YNW-A2 Installation Manual page 45

・Wiring example
Ⓐ
3N~380–415 V
L1, L2, L3, N
Ⓐ
~220–240 V
L, N
・An earth leakage breaker, local switch, and overcurrent breaker should be selected according to the unit capacity
(leakage current limit, breaking current, etc.).
・Select the type of breaker for an inverter circuit as an earth leakage breaker. (Mitsubishi Electric NV-S series or its
equivalent)
・When an earth leakage breaker without an overcurrent protection function is used, a local switch with a fuse or an
overcurrent breaker should be used in combination.
・Use a local switch with at least 3 mm (1/8 in) contact separation in each pole.
・Be sure to connect the power cable to the correct phase terminals.
・If the power cable is damaged, it must be replaced by qualified personnel in order to avoid a hazard.
・Use dedicated power cables for the outdoor unit and indoor unit. Ensure OC and OS are wired individually.
・The local standards and/or regulations is applicable at a higher priority.
P200
P250
P300
P350
Outdoor
unit
P400
P450
P500
P550
EP200
EP250
EP300
EP350
Outdoor
unit
EP400
EP450
EP500
EP550
* Refer to the indoor unit installation manual and instruction book for details about cable size and breaker capacity on the indoor unit.
*1 Meets technical requirements of IEC 61000-3-3.
WT09973X01
Ⓑ
Ⓒ
Ⓕ
Ⓖ
Ⓑ
Ⓔ
Ⓕ Ⓕ
Minimum size [mm (AWG)]
2
Power cable
Power Earth
after branching
cable
point
4.0 (12) – 4.0 (12)
4.0 (12) – 4.0 (12)
4.0 (12) – 4.0 (12)
6.0 (10) – 6.0 (10)
10.0 (8) – 10.0 (8)
10.0 (8) – 10.0 (8)
10.0 (8) – 10.0 (8)
10.0 (8) – 10.0 (8)
Minimum size [mm (AWG)]
2
Power cable
Power Earth
after branching
cable
point
4.0 (12) – 4.0 (12)
4.0 (12) – 4.0 (12)
4.0 (12) – 4.0 (12)
6.0 (10) – 6.0 (10)
10.0 (8) – 10.0 (8)
10.0 (8) – 10.0 (8)
10.0 (8) – 10.0 (8)
10.0 (8) – 10.0 (8)
Ⓗ
Ⓓ
Ⓔ Ⓔ Ⓔ
Ⓕ Ⓕ
Earth leakage breaker
wire
30 A 100 mA 0.1 sec.
or less
30 A 100 mA 0.1 sec.
or less
30 A 100 mA 0.1 sec.
or less
40 A 100 mA 0.1 sec.
or less
60 A 100 mA 0.1 sec.
or less
60 A 100 mA 0.1 sec.
or less
60 A 100 mA 0.1 sec.
or less
60 A 100 mA 0.1 sec.
or less
Earth leakage breaker
wire
30 A 100 mA 0.1 sec.
or less
30 A 100 mA 0.1 sec.
or less
30 A 100 mA 0.1 sec.
or less
40 A 100 mA 0.1 sec.
or less
60 A 100 mA 0.1 sec.
or less
60 A 100 mA 0.1 sec.
or less
60 A 100 mA 0.1 sec.
or less
60 A 100 mA 0.1 sec.
or less
44
Earth leakage breaker
Ⓐ
Local switch with fuse
Ⓑ
Ⓒ Outdoor unit
Ⓓ Pull box
Ⓔ Indoor unit
Earth
Ⓕ
Main BC controller
Ⓖ
Ⓗ In an R2 system: Sub BC controller
In a Hybrid City Multi system:
sub HBC controller
Local switch (A)
Overcurrent
breaker
Capacity Fuse
(NFB) (A)
25 25 30
32 32 30
32 32 30
40 40 40
63 63 60
63 63 60
63 63 60
63 63 60
Local switch (A)
Overcurrent
breaker
Capacity Fuse
(NFB) (A)
25 25 30
32 32 30
32 32 30
40 40 40
63 63 60
63 63 60
63 63 60
63 63 60
Maximum
allowable system
impedance
*
1
*
1
*
1
0.26 Ω
0.20 Ω
0.18 Ω
0.16 Ω
0.14 Ω
Maximum
allowable system
impedance
*
1
*
1
*
1
*
1
0.21 Ω
0.19 Ω
0.17 Ω
0.14 Ω