Constant Voltage Transformer, K Rated Isolation Transformers, Auto Transformer, Magnetic Amplifiers And Reactors, Control Transformers, Power Transformers, Chokes, High Efficiency Transformers, Mumbai, India
 
 

  Constant Voltage Transformer : CVT

Constant Voltage Transformer : CVT
"SIGMA" CVT is a gadget that provides an answer to almost all power problems except power failure. This is a most reliable product, as it has no moving parts & electronic components. Working on magnetic saturation principle, its voltage correction is very fast and accurate. Besides this it provides a reasonable degree of isolation and very good noise rejection. Thus "SIGMA" CVT is an ideal power-conditioning product where power failure (Black-out) is rare.
   

  Ultraisolation Transformer : UIT

Ultraisolation Transformer : UIT
“SIGMA" Ultra Isolation Transformer is a multishielded transformer. Special winding technique is employed while winding an Isolation Transformer, which reduces interwinding capacitance considerably. Isolation Transformer is designed to offer 'Clean Power' to the maximum by rejecting unwanted signals like common mode noise as well as differential mode noise generated by power consuming sources. It is enclosed in a well-ventilated enclosure.
   

  K Rated Isolation Transformers : Ks

K Rated Isolation Transformers : Ks
We design transformers to support high harmonic current as per K-rated specifications.
   

  Auto Transformer : AT

Auto Transformer : AT
The autotransformers are frequently used to convert local Power line Voltage to some other Voltage value needed for a particular piece of equipment.
   
  Magnetic Amplifiers And Reactors : MAP/ R
Magnetic Amplifiers And Reactors : MAP/ R

The Magnetic amplifiers are primarily adjustable inductors, these could be operating in linear region or saturating to behave like the thyristor back to back system that are self or line commutatated, these are being purely magnetic systems are ultra-reliable but expensive as compared to semiconductor devices. These amplifiers are essentially current controlled, hundreds of amperes in secondary is controlled using lass than an ampere of current in primary control winding.

   
  Control And Power Transformers : T
Control And Power Transformers : T
Sigma specializes in designing and manufacturing, optimally designed Buck-Boost Transformers for your servo stabilizer/ solid-state stabilizer. Sigma also manufactures control transformers to suit your needs. Higher power transformers mainly used in power electronic equipment like Battery chargers, FCBC, UPS are supplied by sigma.
   
  Chokes : L
Chokes : L
Sigma specializes in designing and manufacturing, optimally designed Linear and Saturable Reactors to function as DC Filter chokes, AC Line chokes, Harmonic filter Chokes, detuned reactors for Power-factor controllers.
   
  Low Loss High Efficiency Transformers
Low Loss High Efficiency Transformers
1. CRGO – Annealed graded lamination.
2. Amorphous cores (Iron based from Honeywell/ Hitachi ).
   
  Automatic Voltage Regulation Technologies
 
 
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