Loading ...
Loading ...
Loading ...
14
7. Electrical work
Thickness of Wire for Main Power Supply and On/Off Capacities
Model
Power Supply
Minimum Wire Thickness (mm
2
)
Breaker for
Wiring*1
Breaker for Current Leakage
Main Cable Ground
Outdoor Unit ~/N 230 V, 50 Hz
Indoor Unit
Power
When power is supplied
separately
5.5 (6) 5.5 (6) 32 A 32 A 30 mA 0.1 sec. or less
When power is supplied
from the outdoor unit
5.5 (6) 5.5 (6) 40 A 40 A 30 mA 0.1 sec. or less
Indoor Unit ~/N 230 V, 50 Hz Refer to installation manual of indoor unit.
*1. A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).
Total operating current of the indoor unit
Minimum wire thickness (mm²) Local switch (A)
Breaker for
wiring (NFB)
Ground-fault interrupter *1
Main cable Branch Ground Capacity Fuse
F0 = 16 A or less *2 1.5 1.5 1.5 16 16 20 20 A current sensitivity *3
F0 = 25 A or less *2 2.5 2.5 2.5 25 25 30 30 A current sensitivity *3
F0 = 32 A or less *2 4.0 4.0 4.0 32 32 40 40 A current sensitivity *3
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/C)
Connect to Branch box (PAC-MK·BC)
Indoor unit V1 V2
Type 1 SEZ-KD·VAQ(L), PCA-RP·KAQ, PLA-RP·BA 19.8
2.4
Type 2 PEAD-RP·JAA 26.9
Type 3 SLZ-KA·VAQ(L) 9.9
Type 4 MSZ-FH·VE, MSZ-EF·VE, MSZ-GE·VAD 6.8
Type 5 MFZ-KJ·VE 7.4
Type 6 Branch box (PAC-MK·BC) 5.1 3.0
C : Multiple of tripping current at tripping time 0.01 s
Please pick up "C" from the tripping characteristic of the breaker.
*Condition: Branch Box + SEZ-KD·VA × 4 + SLZ-KA·VAQ(L), C=8 (refer to right sample chart)
F2 = 5.1 × 1/8 + 19.8 × 4/8 + 9.9 × 1/8
= 11.8
*3 Current sensitivity is calculated using the following formula.
G1 = V2 + 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
Wire thickness (mm
2
) V3
1.5 48
2.5 56
4.0 66
Sample chart
1 2 3 4 6 8 10 20
C
6000
600
60
10
1
0.1
0.01
SAMPLE
Tripping Time [s]
Rated Tripping current (x)
BH79D391L03_EN.indd 14 7/17/2015 1:08:21 PM
Loading ...
Loading ...
Loading ...