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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
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