Power Supply Wiring - Mitsubishi Electric CITY MULTI PEFY-P15 VMS1-E Manuel D'installation

<Table 1>
System configuration
Transmission cable length
Facility example Residence or independent
(for noise judgment)
VCTF, VCTFK, CVV, CVS,
Types of transmission cables VVR, VVF, VCT or shielding
wire CVVS or CPEVS
Length
2. Remote controller cables
Type of cable Sheathed 2-core cable (unshielded) CVV
2
Cable diameter 0.3 to 1.25 mm
Length Less than 200 m
9.1.

Power supply wiring

• Power supply cords of appliances shall not be lighter than design 245 IEC 57, 227 IEC 57, 245 IEC 53 or 227 IEC 53.
• A switch with at least 3 mm contact separation in each pole shall be provided by the Air conditioner installation.
[Fig. 9.1.1] (P.4)
Ground-fault interrupter
A
Local switch/Wiring breaker
B
C Indoor unit
D Pull box
Minimum wire thickness (mm
Total operating current of
the Indoor unit
Main cable
F0 = 16 A or less * 1.5
2
F0 = 25 A or less * 2.5
2
F0 = 32 A or less * 4.0
2
Apply to IEC61000-3-3 about Max. Permissive System Impedance.
*1 The Ground-fault interrupter should support Inverter circuit.
The Ground-fault interrupter should combine using of local switch or wiring breaker.
*2 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
PLFY-VBM, PMFY-VBM, PEFY-VMS, PCFY-VKM, PKFY-VHM,
Type1
PKFY-VKM, PFFY-VKM, PFFY-VLRMM
Type2 PEFY-VMA
Type3 PEFY-VMHS
Others Other indoor unit
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 brea ker (Tripping current = 8  16 A at 0.01s)
*3 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
30 or less 30 mA 0.1 sec or less
100 or less 100 mA 0.1 sec or less
Caution:
For a single-refrigerant system
Less than 120 m
Building, clinic, hospital or communica-
tions station without noise supposedly
generated from inverter equipment, pri-
store without noise vate power generator, high-frequency
medical equipment, radio-used com-
munications equipment and so on
Less than 120 m
MA remote controller
2 )
Ground-fault interrupter *
Branch Ground
1.5 1.5 20 A current sensitivity *
2.5 2.5 30 A current sensitivity *
4.0 4.0 40 A current sensitivity *
Wire thickness
1.5 mm
2
2.5 mm
2
4.0 mm
2
More than 120 m
Shielding wire CVVS or CPEVS
Sheathed 2-core cable (unshielded) CVV
2
0.3 to 1.25 mm
Add any portion in excess of 10 m to within the longest allowable trans-
mission cable length 200 m (Shielding portion is more than 1.25 mm
Local switch (A)
1
Capacity Fuse
16 16
3
25 25
3
32 32
3
V1 V2
18.6 2.4
38 1.6
13.8 4.8
0 0
V3
48
56
66
For a multi-refrigerant system
Regardless of length
All facilities
Less than 200 m
M-NET remote controller
Breaker for wiring (A)
(Non-fuse breaker)
20
30
40
6000
600
SAMPLE
60
10
1
0.1
0.01
1 2 3 4 6 8 10
C
Rated Tripping current (x)
Sample chart
2
)
20
11