Challenges of Large Induction Motor Starting

In weak networks as in mining sites, gas and oil sites, pipe line pumping stations, during the start-up process of large induction motors, the following issues can be noted: 

• Failed motor starts due to voltage sags

• Undervoltage tripping of sensitive loads

• Lighting flicker and HID lighting shutdown

• Overloaded distribution equipment 

Solutions

HTMS Motor Starter utilizes zero-crossing thyristor-switched capacitor (TSC) technology to solve unacceptable voltage drop problem during direct on line (DOL) startups for large induction motor on an weak transmission line. The inrush reactive current causing the voltage drop will be compensated locally by the HTMS system and normal starting torque can be guaranteed. 

Benefits 

• Increases network capacity

• Minimizes voltage sags and voltage flicker

• Reduces load current

• Transient free switching in sensitive networks

• Improved power factor and reduced maximum demand 

Applications

• Water Treatment Industry

• Pipeline 

• Mining Sites

• Oil and Gas

• Cement Industry 

Advantages over MV Reduce Voltage Start Starter (RVSS) 

Sometimes be the only feasible motor starting option in extreme weak networks due to the following reasons: 

• No harmonics

• High starting torque guaranteed

• Power factor improved, no need for additional reactive power compensation

• More suitable for extremely weak network

Catalogue Download

HOTEAM_HTMS_MV_Catalogue.pdf