Symbol Description - Adleepower AP2G3-137 Instruction Manual

Description

Symbol description

Pm : Motor shaft output required for the load[kw]
£b
: Motor efficiency (normally, approx. 0.85)
COS : Motor power factor (normally, approx. 0.75)
Vm : Motor voltage[V]
lm : Motor current[A] (current with commercial power supply)
Correction factor calculated from current from factor (1.05 to
k :
1.1, depending on the PWM method.)
Pc1 : Continuous capacity[KVA]
kS : Motor starting current/motor rated current
nT : Number of motors in parallel
nS : Number of simultaneously started motors
2
GD : Total (GD
tL : Load torque(kg-m)
tA : Motor acceleration time
2
) converted into motor shaft (kg-m
Calculated of 150% for 1 minute
Motor acceleration of 1 minute or more
K Pm
nT + nS ( kS - 1 )
£b
£r
COS
Pc1 1 + ( nS / nT )( ks - 1 )
¡Ø
Inverter capacity [KVA]
nT lm 1 + ( nS / nT )( kS - 1)
¡Ø Inverter capacity [A]
2
)
88