SIGMA ELECTRICALS

• We are glad to introduce ourselves as one of the leading designers & manufacturers ofMAGNETICS for last 25 years, in variety of ratings, shapes and sizes:

  •  Control Transformers, Single & Three phase (Power and Communication)
  •  Power Transformers, Single & Three phase
  •  Three Phase to Two/ single Phase transformers (LeBlanc/ Scott/ Open delta)
  •  Solenoid Coils
  •  AC and DC Filter Chokes (designed and built to suite application)
  •  Constant Voltage Transformers (CVT), Single phase upto 5 KVA And 3 phase upto 15     KVA
  •  Ultra Isolation Transformers
  •  Magnetic amplifiers/ Saturable Reactors for various applications.
  •  Variable Reactors
  •  Swinging chokes (Non Saturable), with/ without controls
  •  High Frequency Transformers and Chokes (SMPS/ Inverters etc.)
  •  Low loss/ Efficient transformers in amorphous material
  •  Inverter grade transformers, with/ without built in choke
  •  Chokes for Power Factor control and PFC networks.
  •  High speed Cobalt based switching magnetic amplifiers
  •  Line and commutation Chokes and networks for Inverters/ Drives
  •  DI/DT Chokes for Power Devices.

   

  We have design capability to design and build magnetics for your electronic circuits. Our motto is to design as per specifications/ or as per your design and produce equipment to give you a cost/ quality optimal solution.

  
  Our design capabilities are mainly in Power and Power Electronics areas:
  •  Selection of appropriate Topology of Power Converter
  •  Computation and modeling of power devices and control in conjunction with the     magnetic components.
  •  Design of Magnetic components for various PWM waveforms.
  •  Harmonic analysis and appropriate filter design.
  •  Magnetics designed to support specific impedance criterion.
  •  Design of Resonant Networks, and stability analysis.
  •  Design of Magnetics with controlled leakage reactance.