Perbandingan Tipe Motor Starter
PT Schneider Indonesia memberikan informasi perbandingan secara langsung dari tipe masing-masing motor starter , dilihat dari segi biaya, arus starting, harmonic, torsi, saran untuk tipe aplikasi, yang dapat dilihat pada tabel berikut :
|
DOL |
Star-Delta |
Part windings |
Soft starter |
Frequency converter (inverter) |
|
|
Motor |
Standart |
standart |
windings |
standart |
standart |
|
Cost |
+ |
++ |
++ |
+++ |
++++ |
|
Motor starting current |
5 to 10 RC |
2 to 3 RC |
2 RC |
4 to 5 RC |
RC |
|
Voltage dip |
High |
High on connection change |
low |
low |
low |
|
Voltage and current harmonics |
high |
moderate |
moderate |
high |
high |
|
Power factor |
low |
low |
moderate |
low |
high |
|
Number of starts available |
Restricted |
2-3 times more than DOL |
3-4 times more than DOL |
limited |
high |
|
Available torque |
Approx 2.5 RT |
0.2 to 0.5 RT |
2RT |
Approx 0.5 RT |
1.5 to 2 RT |
|
Thermal stress |
Very high |
high |
moderate |
moderate |
low |
|
Mechanical shocks |
Tres eleve |
moderate |
moderate |
moderate |
low |
|
Recommended type of load |
Any |
No load |
Ascending torque |
Pumps and Fans |
any |
|
High-inertia loads |
Yes |
no |
no |
no |
yes |
RC = Rating Current
RT = Rating Torque








