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6. Electrical work
Total operating current of the indoor unit
F0 = 16A or less *2
F0 = 25A or less *2
F0 = 32A or less *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
Type 1
PLFY-VBM, PMFY-VBM, PEFY-VMS,
PCFY-VKM, PKFY-VHM, PKFY-VKM
Type 2
PEFY-VMA
Type 3
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
→ 16A breaker (Tripping current = 8 × 16A 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 0.1sec or less
100 or less
100 mA 0.1sec or less
Wire thickness
V3
2
1.5 mm
48
2
2.5 mm
56
2
4.0 mm
66
6.3. Types of control cables
1. Wiring transmission cables
Types of transmission cable
Shielding wire CVVS or CPEVS
Cable diameter
More than 1.25 mm
Length
Less than 200 m
2. M-NET Remote control cables
Types of remote control cable
Shielding wire MVVS
Cable diameter
More than 0.5 to 1.25 mm
Length
Add any portion in excess of 10 m to within the
longest allowable transmission cable length
200 m.
3. MA Remote control cables
Types of remote control cable
Cable diameter
Length
All manuals and user guides at all-guides.com
Minimum wire thickness (mm²)
Main cable
Branch
Ground
1.5
1.5
1.5
2.5
2.5
2.5
4.0
4.0
4.0
V1
V2
18.6
2.4
38
1.6
13.8
4.8
0
0
2
2
2-core cable (unshielded)
0.3 to 1.25 mm
2
Less than 200 m
Local switch (A)
Ground-fault interrupter *1
Capacity
20 A current sensitivity *3
16
30 A current sensitivity *3
25
40 A current sensitivity *3
32
Sample chart
Breaker for wiring
(NFB)
Fuse
20
16
30
25
40
32
6000
600
SAMPLE
60
10
1
0.1
0.01
1
2
3
4
6
8
10
20
C
Rated Tripping current (x)
11
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