We Provide on-site repair and Maintenance service of Medium voltage and High Power Motor drives with Hands-on Experience in MV Drives, Medium Voltage switchgear and LV Drives.
AC drives applications with modern VECTOR PWM control techniques like FOC, and DTC
Major markets :
Marine,Offshore, Oil & Gas, Energy and Industry.
Steel Plant for various load machines like Conveyors, Centrifugal pumps and Fans .
Brands –ABB mv drive, Allen bradly mv drive, Alstom Power Conversion v ,Amtech , Ansaldo sistemi industriali , Eaton mv drive (cutler - Hammer) , Siemens Mv drive, GE,Converteam mv drive, INGEDRIVE medium-voltage modular AC drives ,Control technique, T300MVi ,MTX Toshiba Medium Voltage drives, Eaton Medium Voltage Adjustable Frequency Drive , Harvest , Hitachi ,Omron, Toshiba ,Parker SSD, Ingeteam mv drive, LS industrial systemmv drive ,RXPE, Lenz, Schneider Electric mv drive,WEG mv drive, Vacon mv drive, and Yaskawa mv drive .
A synchronous motor may be brought up to synchronous
speed with the use of a definite timedelay
relay to excite the DC field. This method
is shown in the circuit of Figure 41–1.
The timing relay coil (TR) is energized with
the main starter coil (M). The instantaneous
normally open interlock (M) in the coil circuit
(F) is then closed. Both interlock M and the DC
contactor coil F must wait for the closing of
the delay-in-closing contact TR. After a preset
timing period, the rotor has accelerated to the
maximum speed possible at this stage. Contact
TR then closes to accelerate the rotor until it
reaches the point where it synchronizes.
The timer setting should be adjusted for the
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M: service@starautomations.com
