Inverter Capacity Required for Multidriving
Inverter Capacity Required for Continuous Performance
Inverter Capacity Required for Starting
K lm Inverter capacity [A]
≦
nT lm 1 + ( nS / nT )( kS - 1)
1.5 Inverter capacity [A]
[ ]
≦
1.5 capacity
Inverter
(KVA)
≦
×
Description
Calculation method
Require output for the load
within the allowable range
Motor capacity within the
inverter ratings
Current within the inverter
capacity
87
Description
Calculation formula (tA < 60 s)
Total starting capacity within
the inverter capacity
Description
Calculated with overload
Starting requirements are within
the inverter capacity
Motor acceleration of 1 minute or less
Current within the inverter
capacity
K N
973 COS
∮
tL
＋
375 tA
GD N
2
η
K Pm / COS Inverter capacity [KVA]
≦
η
∮
K Pm
COS
nT + nS ( kS - 1 )
[ ]
= Pc1 1 + ( nS / nT )( ks - 1 )
1.5 Inverter capacity [KVA]
[ ]
≦
η
∮
3K Vm lm Inverter capacity [KVA]
10
-3
≦
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