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Eddy Current Controllers

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We manufacture 11KW – 800KW Close Transition Principle Type Eddy Current Controllers with Air Cooled Inducers.

We have applied Eddy-Current and Closed-Circuit technology with step-less starting to our Eddy Current Starters.  Eddy Current Starters are extensively being used to replace existing manually operated Resistance Type Wound Rotor Starters and Liquid Rotor Starters.  Our Eddy Current Starters have a unique inducer system for starting Wound-Rotor Induction Motors, offering considerable improvements in maintenance and reliability.

Eddy-Current Starters require only one shorting contactor in the rotor circuit, thus reducing the system complexity.  The Inducer acts as the current-limiting rotor impedance during run-up, and is connected across the rotor winding.  The rotor winding is bypassed by a shorting contactor, which is connected across the inducer.  The inducer is operated by a timer to short out the rotor when full speed is reached.  This provides simplicity in the system.

Eddy Current Starters provide smooth acceleration to full speed and thus reduce electrical and mechanical stresses in the motor and drive.  Inducers incorporated in our Eddy Current Starters have no moving parts and will give many years of service without any maintenance or adjustment.  These Starters are designed to start a wide range of motors. With the aid of selective tappings provided in the Inducer, the user is able to select the exact starting torque and stator current required on commissioning.

Our Air-Cooled Eddy Current Starters are manufactured in accordance with IS/IEC standards with Teflon insulated silver plated wiring, which can withstand high temperatures and voltage, should any external fault happen.  Appropriate Fuses are provided ensuring no damages to the control wiring, in case of short circuit. We use Rittal enclosures for all our Air-Cooled Eddy Current Starters. All of our contactors and relays are sourced and supplied by ABB or Schneider for easy interchangeability, in case spares are required. The Starters can also be supplied with RS-232/485 Ports for online real-time data collection, motor control and management

SALIENT FEATURES

  • Closed-Circuit Technology
  • Step-less Starting; Smooth Acceleration
  • Unique Inducer System
  • Requires Only 1 Shorting Contactor
  • No Moving parts
  • Designed to Start a Wide Range of Motors

ADVANTAGES

  • Offers improvements in reliability
  • No maintenance – does not require adjustment
  • No moving parts – Reduces system complexity
  • Smooth, (almost) step-less starting of the Slip-Ring motor
  • Heat energy is dissipated mainly in the High Carbon Iron core
  • Reduces Electrical and Mechanical Stresses of the Machines
  • Ideal retrofit in all applications
  • No control functions – just impedance variation with tappings
  • Not a pure resistance – has an inductive component
  • Can be custom designed as per customer’s requirements

Our Products

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Contact
401, Apollo Trade Centre,
2 B, Rajgarh kothi, Geeta Bhavan Square, A.B. Road, Indore
M. P. - 452 001, India
Tel : + 91 731 4066666
Fax: + 91 731 4066555
e-mail : energy@midexgroup.com