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PTss is an acronym for Power Transformers Sales and Services (India) Private Limited, manufacturer of Online Transformer Dry out Systems and  Online OLTC filtration system for Power Utilities, Industrial plants & service across the globe.With its long association with Velcon Filters of USA, PTss forged a successful partnership in developing special products to match the Utility requirements and challenges of the Sub-Continent Power Grid. PTss-Velcon was incorporated in 2002 and has been successfully establishing Online Dryout Process for EHV Transformers and Reactors.This technology has been well established by our experience of havingdehydrated several Transformers and Reactors with the machines
manufactured by us under know-how and technology tie-up with Velcon Systems USA.

About Us

PTss is the Technology Integrator for Velcon range of Electric Utility systems, Filter and Cartridges in India. Over the years PTss has acquired Technology expertise and have developed several products successfully. 

PTss Online Transformer Dryout System incorporates online assessment of Moisture inside a transformer including insulation and effects removal of the moisture using media cartridges. This method provides a very cost effective and convenient process to remove accumulated moisture from inside a transformer as compared to the traditional methods.

Our proven track record comes from the fact that most of our orders have been repeats from our existing customers.

Range of Products offered by PTss

  • PTss-TDS Online Transformer Dryout Systems
  • PTss-TFS Online Tap Changer Filtration System
  • Velcon Electric Utility Products Complete range

We have supplied over 1000 machines to leading Power Transmission and Generation companies in India like Power Grid Corporation of India Limited, National Thermal Power Corportion Limited, Himachal Pradesh State Electricity Board, APTRANSCO,UPPTCL, TSTRANSCO,Malana Power, Essar Power etc., other State Power utilities as well as OEM Transformer manufacturers like ABB, BHEL, CG Power(CGL), Bharat Bijlee, EMCO, GE,  SIEMENS and others.

Automated 24×7 monitored Dehydration to Extend Transformer Life

Maintain Transformer Health by monitoring and removing accumulated Moisture

Up keeping our Transformer from health perspective is everyone’s concern. Generally, our transformers operate at optimum loading but due to severe reduction in power demand our substation transformers are under loaded or partially loaded. This increases the risk of moisture getting into the paper which may than reduce the life of the paper and in turn shorten the life of the transformer.

Proven Automated unmanned Online Dehydration System – PTss TDS

Therefore, it is critically important to watch the moisture ppm values 24×7 in real time and automatically perform the drying process of its own at each and every transformer.We understand that due to lockdown, majority of our transformer maintenance contractual services are at halt, social distancing is maintained in the field officers as well due to which the online transformer monitoring becomes even more important.

More than 800 Systems installed in over 200 Substations including PGCIL/Utilities

PTss has the honor to introduce online moisture removal technology in India through PGCIL in the Year 2003 and has the privilege to supply more than 1200 Online Transformer DryOut Systems in the national grid substations of India and handsome quantities the state grid substations as well on varied ratings of Power Transformers from 10MVA to 500MVA, All of these systems are working satisfactorily and numerous case studies are generated which can be made available on specific requests. PTss has a great contribution in enhancing the life of the Power Transformers which can be accessed from our repeated orders and few of the performance reports available. Detailed credentials available on requests.

One System for Moisture Monitoring, Transformer Dryout Tap Changer Filter system IEC61850 compatible – IIOT Enabled – for remote access and control

We have some good news to share that besides our regular models to offer and with our around two decades of experience, we are ready to offer a dedicated economical integrated system under ‘Make in India’ initiative to maintain both the Transformer main tank oil and OLTC oil around the clock.

Healthiness of the complete Transformer is ensured without any intervention of manpower.

Secondly, our systems are designed keeping in view the online servicing facilitation of the system remotely over internet. Our systems are designed for integration with your already implemented SCADA either via IEC-61850 protocol or MODBUS and critical moisture ppm values can be remotely and closely monitored

Contact us Demo or discusssion   yogeshsood@ptssglobal.com or sales@ptssglobal.com

We request you to kindly contact back for booking a video conference call with your team of design and maintenance experts for clarifying any of your queries and quick hands on training. Once the lockdown is relaxed fully, we would pay a visit to your office for further discussions.


To Satisfy every valued customers of ours with our impeccable Quality Product and seamless Predictable performance is our goal