Samsung AM140RNPDKH Series, Installation Manual

Page: 17 / 36

Specification of electric cables between indoor units
Power supply
(1 phase)
MCCB ELB Power cable Ground wire Communication cable
220 - 240 V~ 50/60 Hz
Max. : 253 V
Min. : 187 V
X A
X A, 30 mA
0.1 s
2.5 mm 2 2.5 mm 2 0.75 ~ 1.5 mm 2
❋
Select the power cable by referring to the formula
2
below.
❋
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 / CENELEC: H07RN-F)
1. Select the capacity of ELB and MCCB by referring to the formula below.
5IFDBQBDJUZPG&-#.$$#9<">99Ƅ"J
❋
X : The capacity of ELB, MCCB
❋
Ƅ"J4VNPGSBUFEDVSSFOUTPGFBDIJOEPPSVOJU
❋
Rated current
Model Rated current (A)
AM140
✴
NPDKH
✴
0.9
2. When selecting the thickness of cable or length of cable, make sure that the sum of voltage drop between indoor units is
10 % or less of input power (220 - 240 V).
n
Coef × 35.6 × L
k
× i
k
) < 10 % of input voltage[V] Ƅ (
1000 × A
k
k=1
❋
Coef: Use about 1.55 in consideration of contact resistance when tightening the terminal of a wire.
❋
L
k
: Distance between indoor units [m], A
k
: Thickness of a wire (mm
2
)
i
k
: Electric current between indoor units[A]
ENGLISH-17
02
INST
ALLA
TION