Libratherm Instruments Private Limited
Dahisar East, Mumbai, Maharashtra
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Motor Soft Starter SCR Firing Card

Three phase SCR triggering card for AC Induction motor soft starter

For 3 Phase Induction Motor Soft Starter

For 3 Phase Induction Motor Soft Starter
  • For 3 Phase Induction Motor Soft Starter
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Approx. Price: Rs 15,000 / Unit

Product Details:

Minimum Order Quantity1 Unit
ApplicationAC Induction motor
BrandLibratherm
PhaseThree
User selectable configurationFor 3 wire close delta, 6 wire open delta
Auxiliary Supply230 VAC

To gradually accelerate the speed of AC 3 phase induction motor it is required to feed increasing voltage to the motor and such behaviour is only possible by connecting SCR in series with the motor. The SCRs are controlled by MSST-15 card to generate the firing pulses giving the effect of soft start. Libratherm offers SCR triggering card model MSST-15, which is specially designed for motor soft starter application. This card accepts the start command from a switch contact and generates gate-cathode pulses for 3 pairs of back to back connected SCRs. The user has access to set the starting voltage to create the torque and to set the soft start time. The card takes the feedback from 5A CT to monitor the load current and to generate the trip contact in case of an overload 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 an external contractor. The bypass command is generated by MSST-15, once the full speed is achieved as indicated by TOR LED.
The user can build motor soft starter just by using the MSST-15 card and suitable ratings of external thyristors, based on the motor capacity.

Features:

  • User settable jump start and soft start/ramp time
  • Accepts start and stop command from external potential free contact
  • Current Limit and Overload trip facility
  • Contactor bypass output and Fault output
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Additional Information:

  • Item Code: MSST-15
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Motor Soft Starter

Motor Soft Starter
  • Motor Soft Starter
  • Motor Soft Starter
  • Motor Soft Starter
Get Best Quote
Approx. Price: Rs 15,000 / Unit

Product Details:

Minimum Order Quantity1 Unit
BrandLibratherm
Power168 KW
PhaseThree
Motor PowerUp to 275 HP

The Motor soft starter MSS-XX for 3 phase induction motor. The user has access to set the starting voltage to create the torque and to set the soft start time. For overload trip, the feedback it was taken from 5A CT to monitor the load current and to generate the trip contact in case of the overload 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 an external contactor. The bypass command is available in the form of potential free contact, once the full speed is achieved as indicated by TOR LED.

Features:
  • Reduces starting current.
  • User selectable configuration for 3 wire close delta (Inline)and 6 wire open delta (inside line).
  • User settable jump start and soft start/ramp time.
  • Accepts start and stop command from external potential free contact.
  • Overload trip facility.
  • Contactor bypass output and Fault output.
  • Easy to install and maintain.
Request
Callback


Additional Information:

  • Item Code: MSS-xx
Yes! I am interested
View PDF
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Kamlesh Panchal (Managing Director)
No. 401-403, Diamond Industrial Estate, Ketki Pada Road Dahisar East
Mumbai- 400068, Maharashtra, India



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