Samsung AM***FN*D series - Electronic Wire Specification

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ENGLISH
Power supply MCCB ELB or ELCB Power cable Earth cable Communication cable
Max : 242V
Min : 198V
XA
X A, 30mA
0.1 sec
0.0039inch
2
(2.5mm
2
)
0.0039inch
2
(2.5mm
2
)
0.0012~0.0023inch
2
(0.75~1.5mm
2
)
X Decide the capacity of ELCB(or MCCB+ELB) by below formula.
The capacity of ELCB(or MCCB+ELB) X [A] = 1.25 X 1.1 X ∑Ai
7X : The capacity of ELCB(or MCCB+ELB).
7
∑
Ai : Sum of Rating currents of each indoor unit.
7 Refer to each installation manual about the rating current of indoor unit.
X Decide the power cable specification and maximum length within 10% power drop among
indoor units.
7 coef: 1.55
7 Lk: Distance among each indoor unit[m(ft)], Ak: Power cable specification[mm
2
(inch
2
)]
ik: Running current of each unit[A]
∑ (
Coef×35.6×Lk×ik
)<
10% of input voltage[V]
1000×A
k
n
k=1
Example of Installation
- Total power cable length L = 328ft(100m) , Running current of each units 1[A]
- Total 10 indoor units were installed
X
Apply following equation.
∑ (
Coef×35.6×L
k×ik
)<
10% of input
voltage[V]
1000×A
k
n
k=1
K Calculation
OInstalling with 1 sort wire.
OInstalling with 2 different sort wire.
10[A]
Indoor unit10
65.6ft(20m)32.8ft(10m)
0ft(0m)
9[A] 1[A]
328ft(100m)
Indoor unit2Indoor unit1
ELCB
220[V]
-2.2[V] -2.0[V]
 0.0039inch
2
(2.5mm
2
) 
208.8[V](Within 198V~242V)
-(2.2+2.0+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)= -11.2[V]
it's okay
0.0039inch
2
(2.5mm
2
) 0.0039inch
2
(2.5mm
2
)
220[V]
-1.4[V] -1.2[V]
 0.0039inch
2
(2.5mm
2
) 
209.5[V](Within 198V~242V)
-(1.4+1.2+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)= -10.5[V]
it's okay
0.0062inch
2
(4.0mm
2
) 0.0062inch
2
(4.0mm
2
)
Or
MCCB+
ELB
Specification of electronic wire