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SIGMA ELECTRICALS
About Us
We are glad to introduce ourselves as one of the leading designers & manufacturers of MAGNETICS 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.
Activities
Spl.In Buck-Boost Transformers, UPS Transformers, Isolation / Ultra Isolation Transformers, Transformers For Energy Saving Equipments, 3Ph To 1Ph Transformers, Auto Transformers For Starting Motors Upto 400KVA, Chokes, CVT Upto 5KVA