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

 

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