Samsung Big Duct Type Series, Руководство по установке, Страница: 17 / 47

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Power supply MCCB ELB or ELCB Power cable Earth cable Communication cable
Max : 242V
Min : 198V
X A
X A, 30mmA
0.1 s
2.5mm2 2.5mm2 0.75~1.5mm2

Decide the capacity of ELCB(or MCCB+ELB) by below formula.

Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene
sheathed flexible cord.
(Code designation IEC:60245 IEC 57 / CENELEC:H05RN-F or IEC:60245 IEC 66 / H07RN-F)
The capacity of ELCB(or MCCB+ELB) X [A] = 1.25 X 1.1 X ∑Ai
T
X : The capacity of ELCB(or MCCB+ELB).
T
∑Ai : Sum of Rating currents of each indoor unit.
T
Refer to each installation manual about the rating current of indoor unit.

Decide the power cable specification and maximum length within
10% power drop among indoor units.
T
coef: 1.55
T
Lk: Distance among each indoor unit[m], Ak: Power cable specification[mm 2 ]
ik: Running current of each unit[A]
∑ (
Coef×35.6×L
k
×i
k
) <
10% of input voltage[V]
1000×A
k
n
k=1
Example of Installation
- Total power cable length L = 100(m), Running current of each units 1[A]
- Total 10 indoor units were installed

Apply following equation.
∑ (
Coef×35.6×L
k
×i
k
) <
10% of input
voltage[V]
1000×A
k
n
k=1
h
Calculation

Installing with 1 sort wire.
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
]

Installing with 2 different sort wire.
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
]
10[A]
Indoor unit10
20[m] 10[m] 0[m]
9[A] 1[A]
100[m]
Indoor unit2 Indoor unit1
ELCB
or
MCCB+
ELB
Specification of electronic wire
DVM Big Duct_EU_IM_DB68-05047A-01_EN_16.03.30.indd 17 2016/4/7 15:54:25