Thyrirstor AC Motor Soft Starters 1,2 And 3 Phase

Product Details:

Features:

• Suitable for Single/Two phase AC Induction motor
• Reduces starting current and Torque
• User settable jump start and soft start / ramp time
• Accepts start and stop command from external potential free contact
• Over load trip facility
• Contactor bypass output and Fault output
• Easy to install and maintain

Applications:

• Machine tools
• AC Compressors
• Water Pumps
• High inrush fan motors
• Air compressors
• Crop dryers, augers, bucket elevators, and fan or pump applications

Description:

To gradually accelerate the speed of AC induction motor it is required to feed increasing voltage to the motor and such behavior is only possible by connecting a pair of antiparallel SCRs in series with the motor.   The back to back SCRs are controlled by MSST-15 firing card to generate the firing pulses giving the effect of soft start or gradual increasing voltage. Libratherm offers ready to use motor soft starter MSS-1P-XX for single phase induction motor. User has access to set the starting voltage to create the torque and to set the soft start or ramp time. For over load protection, the feedback it taken from CT to monitor the load current and to generate the trip contact in case of over load condition. Once the full speed is achieved, a relay contact is available to energize bypass contactor.

Additional Information:

• Item Code: SPSS-27
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: Mumbai

Product Details:

Features:

• Suitable for Single/Two phase AC Induction motor
• Reduces starting current and Torque
• User settable jump start and soft start / ramp time
• Accepts start and stop command from external potential free contact
• Over load trip facility
• Contactor bypass output and Fault output
• Easy to install and maintain

Applications:

• Machine tools
• AC Compressors
• Water Pumps
• High inrush fan motors
• Air compressors
• Crop dryers, augers, bucket elevators, and fan or pump applications

Description:
To gradually accelerate the speed of AC induction motor it is required to feed increasing voltage to the motor and such behavior is only possible by connecting a pair of antiparallel SCRs in series with the motor.   The back to back SCRs are controlled by MSST-15 firing card to generate the firing pulses giving the effect of soft start or gradual increasing voltage. Libratherm offers ready to use motor soft starter MSS-1P-XX for single phase induction motor. User has access to set the starting voltage to create the torque and to set the soft start or ramp time. For over load protection, the feedback it taken from CT to monitor the load current and to generate the trip contact in case of over load condition. Once the full speed is achieved, a relay contact is available to energize bypass contactor.

Additional Information:

• Item Code: TPSS-27
• Pay Mode Terms: T/T (Bank Transfer)

Product Details:

Features:

• Suitable for 3 phase AC Induction motor up to 205KW (275HP)
• Semikron make SCR modules (SKKT series)
• Reduces starting current
• Motor connection for both 3 wire close delta (In line)
• and 6 wire open delta (in-side line)
• User settable jump start and soft start / ramp time
• Accepts start and stop command from external potential free contact
• Over load trip facility and built in motor protection
• Contactor bypass output and Fault output
• Easy to install and maintain

Model Wise Description:



Description:
A motor soft starter is a device used with AC electrical motors to temporarily reduce the load and torque in the power train and electric current surge of the motor during start-up. This reduces the mechanical stress on the motor and shaft, as well as the electrodynamic stresses on the attached power cables and electrical distribution network, extending the lifespan of the system.

To gradually accelerate the speed of AC 3 phase induction motor it is required to feed increasing voltage to the motor and such behavior is only possible by connecting SCRs in series with the motor.   The SCRs are controlled by MSST-15 firing card to generate the firing pulses giving the effect of soft start. Libratherm offers ready to use motor soft starter MSS-XX for 3 phase induction motor. User has access to set the starting voltage to create the torque and to set the soft start time. For over load trip, the feedback it taken from internal CT to monitor the load current and to generate the trip contact in case of over load condition. Once the motor achieves full RPM, it is not required to pass the current through the SCRs and hence these SCRs can be bypassed using external bypass contactor.

Additional Information:

• Item Code: MSS-106