Mitsubishi Electric CITY MULTI PLFY-P25-40VCM-E, Installation Manual

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7
GB
4. Electrical work
6000
600
60
10
Tripping Time [s]
1
0.1
0.01
1 2
Rated Tripping current (x)
3 4 6 8
C
10 20
SAMPLE
Sample chart
4.3. Types of control cables
1. Wiring transmission cables
Types of transmission cable Shielding wire CVVS or CPEVS
Cable diameter More than 1.25 mm
2
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
2
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 2-core cable (unshielded)
Cable diameter 0.3 to 1.25 mm
2
Length Less than 200 m
Total operating current of the indoor
unit
Minimum wire thickness (mm²)
Ground-fault interrupter *1
Local switch (A) Breaker for wiring
(NFB)
Main cable Branch Ground Capacity Fuse
F0 = 16A or less *2 1.5 1.5 1.5 20 A current sensitivity *3 16 16 20
F0 = 25A or less *2 2.5 2.5 2.5 30 A current sensitivity *3 25 25 30
F0 = 32A or less *2 4.0 4.0 4.0 40 A current sensitivity *3 32 32 40
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 V1 V2
Type 1 PLFY-VBM, PMFY-VBM, PEFY-VMS,
PCFY-VKM, PKFY-VHM, PKFY-VKM 18.6 2.4
Type 2 PEFY-VMA 38 1.6
Type 3 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
→ 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
1.5 mm
2
48
2.5 mm
2
56
4.0 mm
2
66