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Revolution
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Total Head (M)
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H=h+hf H
: total head(M) h
: actual head(M) ¥ë:
coefficient of friction
g
: acceleration 9.8m/sec
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Q
: capacity (§©/sec) V
: m/sec D
: diameter (M) A
: sectional area(§³)
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Discharge Diameter By Capacity
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Discharge
Dia.(mm)
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Capacity(§©/min)
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Discharge
Dia.(mm)
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Capacity(§©/min)
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Out Put of Motor
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- Hydraulic Power(KW)=0.163 x H(M)
x Q(§©/min) x Gravity (H.P)
- 3Phase, Power (KW)=
x Voltage(V)
x Current(A) x Efficiency(E) x Counter
Current ÷ 1,000
- Brake Horse Power ¡æ(Power Factor
10%
=0.1) (B.H.P)
- Motor Power (KW)=B.H.P x (1+Power
Factor)
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No. of Poles and Revolution
|
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Pole
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50HZ
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60HZ
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Ns
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N
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Ns
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N
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- Ns(Synchronous Speed)=(120
x F)/ P [rpm] - N(Pump Revolution frequency)=Ns(1-S)
[rpm] - F: frequency(HZ) -
P: Pole S: Slip(%)
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Capacity of Generator
|
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1) General
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2) Line-Start
or Y-Delta
|
|
PG1(Capacity
of Generator)=KW/0.8¥ç
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PG2= KW x
K x S x 0.6
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|
- KW: Output of Motor
- ¥ç : Efficiency
of Motor
|
- K: 5~8 - S: D.O.L
¡æ1, Y-¡â ¡æ1/3
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Starting Grade of Rotator
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Temperature Limitation of Motor
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Starting Method of Pump
|
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Starting
Method
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Capacity
|
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Line Start
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15 [KW]
|
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Star-Delta Start
|
18.5[KW]
~75[KW]
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Reactor Start
|
90 [KW]
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Compensator Start
|
90 [KW]
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Cable
|
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Cable Connecting Method
|
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Connecting method when it is anti-phase
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