53
Example of Installation
-
Total power cable length L = 100(m), Running current of each units 1[A]
-
Total 10 indoor units were installed
10[A]
Indoor unit10
20[m]
10[m]
0[m]
9[A]
1[A]
100[m]
Indoor unit2
Indoor unit1
ELCB
or MCCB+
ELB
t
Apply following equation.
n
Σ
k=1
(
Coef×35.6×L
k
×i
k
) <
10% of input
voltage[V]
1000×Ak
❈
Calculation
t
Installing with one size cable.
220[V]
-2.2[V]
-2.0[V]
············ 2.5[mm
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
2.5[mm
2
]
2.5[mm
2
]
t
Installing with two size cables.
220[V]
-1.4[V]
-1.2[V]
············ 2.5[mm
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
4.0[mm
2
]
4.0[mm
2
]
ENGLISH
