Line chokes for VFDs (Input and Output)

Apart from standard process automation, industries are also investing in “Variable Frequency Drives” for energy saving applications. It is a well-known fact that the presence of loads such as Variable Frequency Drives will generate significant magnitude of

harmonic distortions in the system, and may cause irreversible damage to other loads / equipment such as Capacitors, Transformers, Alternators, Relays, Power Supplies, SMPS etc. installed in the plant. Therefore it becomes extremely critical and necessary to limit harmonic distortions from automation / power saving equipment such as VFD’s, DC Drives etc. Most drive manufacturers propose a Line Choke/ Reactor to be connected in series with the VFD’s to reduce the harmonic current generated by VFD’s. For general purpose motors and using drives especially with long cable runs (typically over100 m), an Output Choke is recommended to maintain the voltage waveform within the specified limits.

The presence of series reactor essentially increases the input systems impedance and hence the harmonic current generated by the VFD’s reduces marginally by a factor of about 5 to 10%.

We supply chokes for all brands of VFDs, ratings up to 150kw, low voltage systems i.e.1000V. These are generally 1, 2, 3 OR 4%. Our Chokes are noiseless and help smoother operation to VFDs.

Having a team of Experience and Experts, we have been able to manufacture, export and supply a wide range of Line Chokes. Our products are manufactured using high quality raw material to suit typical need of Input or Output Chokes. In order to ensure the Quality and Performance of the product, the products are tested on various parameters.


Line Choke Specifications

Applications AC/DC Drives, Power Supplies, Instruments, Battery Chargers, Educational Lab Equipments, Induction Heating Systems, etc.
Used As Line Filter, Current Suppressor, Tapped Inductors.
Ratings 100mA to 500A. (Custom Built as per Specifications)
Frequency Up to 1KHz.
Voltage Up to 3.3 KV.
Line Choke Manufacturer in Pune

DC Chokes Manufacturer in Pune

Being in the field of Electronic/ Electrical product lines since 25 years, we thoroughly understand the use and function of DC chokes in power Supplies, UPS Systems, battery chargers, VFDs etc. We manufacture DC chokes that smoothen the DC source and do not allow any part of AC component (ripple) to feed further (output). All this is achieved without any noise or vibrations in the DC chokes. Our DC Chokes deliver optimum results in functioning of the DC source at peak performance. High quality / low loss stampings are used while making these DC chokes.

Notable features of our DC Chokes

  • Accuracy in inductance value (-0% +20%)
  • Noiseless / vibration-free operations
  • Correct filtering /smoothening effect to the loads
  • Minimum temperature increase

Backed by the team of Experienced and Experts with advanced infrastructure, we have been able to manufacture, export and supply a wide range of DC Chokes.

Our products are manufactured using high quality raw material to suit exact requirement of Inductance value. Optimized Designs to achieve high efficient Chokes, utmost care is taken. In order to ensure the Quality and Performance of the product, every Choke is tested on various parameters including “Linearity Test” before dispatch to the clients.

DC Choke Specifications

Applications UPS Systems, Drives (VFD) etc.
Used As DC Filtration / Smoothing the Wave Forms
Ratings 1A to 300A 0.1mH to 15mH or Customer Specified, CU AL both options available.
Voltage Customer Specified.

" We are leading manufacturer and supplier of high performance Transformers & Chokes/Reactors with highest Energy Efficiency resulting in Energy (cost) savings in the Product, where those are used."

“ Manufacturer of Inductors, Line Reactors and Custom Build Single Phase or Three Phase Control & Power Transformers with capacity from 10 VA to 150 KVA ”

Quality Check

All materials that form a part of our products have to pass through stringent Quality checks.

  • Every product is rigorously tested for their electrical parameters
  • Ratio test (No load test)
  • Short circuit test
  • Megger test (Insulation resistant test)
  • High voltage break down test (Flash test)
  • Type test for batch core loss / efficiency
  • Impedance measurement Test
  • Test certificate details on all the tests conducted and results thereof.

Our Services

Why Choose Us?

Customized design to
suit exact application

Strong R & D facility and team for customized products

Cost effective and Energy
Efficient Solutions

We study your application and suggest cost effective solution with optimum efficiency

Reliable Team

We have a qualified, experienced and trained team of professionals like engineers, technicians, supervisors and quality personnel.

No compromise
value system

We do not deviate in specifications and material under any circumstances. Every product and process is Tested and standardized.

Quality control at every
stage of production

Adhere to high quality standards with robust QMS Implementation

We always adhere to the
promised delivery schedule

Our service network ensures prompt service as and when you need it.

Our Happy Customers

Affordable Rotobitcs & Auto Pvt. Ltd.
Bajaj Auto Ltd
Consolidated  Hoists Pvt Ltd
Delta  India Pvt.Ltd.
Digital Instruments & Control Systems
Fag Controls
Gr Industrial Automation Systems
Hmt Machine Tools Ltd
Incon Automation P.Ltd
Inditech Systems Pvt Ltd
Interpack Machines Pvt. Ltd.
Jove Electronics Pvt Ltd
Electronica Plastic Machines Ltd.
Lexon Winders
Luna Bearing
Machtool Automation
Precision Control Systems
Premier Ltd. (Machine Tools Divn)
Sid Electric Pvt Ltd
Techmark Automation & Control
Ul Systems & Controls Pvt Ltd
Unique Controls Pvt Ltd
Anshumantech  Pvt Ltd
Aar- Em Electronics Pvt.Ltd
Aseem Power Tekneeks Pvt. Ltd.
Enertech Ups Pvt. Ltd
Eram Magnafulx Pvt. Ltd.
Its Power & Infrastructure Pvt. Ltd.
Progressive Powercon
Renutron Power Solution Pvt. Ltd.
ERudra Power Eqpt Pvt. Ltd
Technovision Energy Pvt. Ltd.
U & K Power Systems Pvt. Ltd.
Ultimate Engineers.
Vishwajeet Green Power Technology Pvt. Ltd.
Binix Control Systems
Creesta Elevators Pvt Ltd
Inditech Systems Pvt Ltd
Rewale Engineering
Space Magnum


See what our customers are feeling after installing our customized solutions

"Transformer play a very critical role in efficient transmission & distribution of electricity. An efficient transformer ensures that electricity generated at the power plant reaches the end-consumption point with lowest technical losses. The Indian transformer industry is now at the threshold of an exciting future".

Rajesh Piralkar

Rajesh Piralkar

“ I have been associated with M/S Transfield and Mr. Toradmal for almost 20 years now and have used their transformers, detuned reactors and shunt reactors in various products namely UPS systems, Detuned harmonic filter panels and others. Their quest for technical perfection and consistency in quality while delivering electromagnetic products is admirable. Crisp and prompt business transactions with Transfield are always enjoyable. I wish them success in all their future endeavors.”

Rajesh Piralkar

Narendra Duvedi

SAS Powertech P Ltd., Executive Director, BEE Certified Energy Auditor, Chartered Engineer, Hon Secretary
Consulting Electrical Engineers Association of Maharashtra (CEEAMA).

We have been associated with Transfield Electronics for over 2 decades. Our experience has been that we have always witnessed a proactive approach towards service and betterment of product and open to change, which is a must to grow a business partnership.

We appreciate that Design change, cost optimization and above all exceeding customer satisfaction has always been on the forefront at their end which adds value to both organizations

We have always respected the way your systems have been followed throughout your organization and we want you to keep up the good work. We take this opportunity in wishing you and your organization best wishes and success in your future endeavors.

Rajesh Piralkar

Ranjit Mohite

Managing Director, Aar-em Electronics Pvt. Ltd.
Years Of Legacy
Happy Customers