Transformer Oil Testing

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Transformer Fluid Analysis

Transformer oil testing

Hartford Steam Boiler transformer oil testing



Transformers are found in virtually every building, industry and institution. Sudden unexpected transformer breakdown can cause costly physical damage, electrical outages, business interruptions or fire. Transformer oil testing is an effective means to detect conditions that indicate the unit needs to be serviced before a loss occurs. Many transformers are filled with insulating fluids, such as mineral oil, silicone, natural ester or chlorinated types.

HSB TOGA® provides insulating oil, lube oil, hydraulic fluid and heat transfer fluid analysis

Analysis of the insulating fluid used in most transformers is an effective way to increase the reliability of transformers and other equipment at a reasonable cost. Hartford Steam Boiler’s (HSB) Transformer Oil & Gas Analysis Program (TOGA®) has a proven record of success in helping to keep your equipment on line and preventing an unexpected failure. It can be more effective and less disruptive than other available methods – insulating oil samples can usually be taken without removing equipment from service.


Containers and paperwork to submit for testing are shipped, and samples are returned to our TOGA® laboratory for analysis and evaluation. The results and recommendations are conveniently published to the secure TOGA® website.

HSB TOGA® testing service


HSB gives you a competitive edge by using superior technology and engineering expertise to help manage the integrity of your equipment – keeping it on line and in business. HSB's unique, interpretive program for improved performance and asset protection provides you with:

  • Advanced diagnostic testing techniques and tools
  • A professional technician that gives interpretive reports that identify problem conditions, failure patterns and trends based on a thorough examination of test results
  • Quick, accurate results
  • Performance-based solutions

The HSB difference

Hartford Steam Boiler’s transformer asset management program stands out in the industry. We use superior laboratories with up-to-date methodologies for the most accurate results possible, and are dedicated to providing you with experienced personalized consultation, testing integrity, and intervention.


TOGA® consultation is available to help you understand the reports and correct potential problems that may have been identified through the testing. Our test reports are more than just numbers - they contain detailed interpretation, processed through an expert system and scrutinized by our technical staff.


We act as your asset protection management without adding to your headcount, by providing hard facts and empirical data and looking for conditions that lead to problems - we're here to discuss your needs.

Our HSB TOGA® interactive web site helps you track

  • Online sample orders
  • Online report review for current testing results
  • Online view of historical data and trending
  • Secure Internet site for your engineers and local maintenance personnel

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© 2019 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved. This is intended for informational purposes only and does not modify or invalidate any of the provisions, exclusions, terms or conditions of the policy and endorsements. For specific terms and conditions, please refer to the coverage form.

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This publication is available exclusively to Munich Re clients. Please contact your Client Manager.