21
ENGLISH
Specification of electronic wire
Power supply
MCCB
ELB
Power cable
Earth cable
Communication cable
Max : 242V
Min : 198V
XA
XA, 30 mmA
0.1 s
2.5 mm
2
(0.0039 inch
2
)
2.5 mm
2
(0.0039 inch
2
)
0.75~1.5 mm
2
(0.0012~0.0023inch
2
)
f
Decide the capacity of ELB and MCCB by below formula.
The capacity of ELB, MCCB X[A] = 1.25 X 1.1 X ∑Ai
❇
X : The capacity of ELB, MCCB
❇
∑Ai : Sum of Rating currents of each indoor unit.
❇
Refer to each installation manual about the rating current of indoor unit.
❇
Rating current
Unit
Model
Rating current
AM
✴✴✴
FN4DCH
✴
✴✴
009
✴✴
✴✴
018
✴✴
✴✴
024
✴✴
✴✴
030
✴✴
✴✴
036
✴✴
✴✴
048
✴✴
0.25 A
0.25 A
0.30 A
0.50 A
0.56 A
0.75 A
f
Decide the power cable specification and maximum length within 10% power drop among indoor units.
n
Coef × 35.6 × L
k
× i
k
) < 10% of input voltage[V]
∑ (
1000 × A
k
k=1
❇
Coef: 1.55
❇
L
k
: Distance among each indoor unit[m(ft)], A
k
: Power cable specification[mm
2
(inch
2
)]
i
k
: Running current of each unit[A]
Example of Installation
f
Total power cable length L = 100(m), Running current of each units 1[A]
f
Total 10 indoor units were installed
10[A]
Indoor unit10
20[m](65' 7")
10[m](32' 10")
0[m](0ft)
9[A]
1[A]
100[m](328')
MCCB
Indoor unit2
Indoor unit1
ELB
f
Apply following equation.
n
(
Coef × 35.6 × L
k
× i
k
) < 10% of input voltage[V]
1000 × A
k
k=1
