Weidmann Diagnostics


About the company

Weidmann has been at the heart of the global transformer industry for over 140 years. With deep rooted knowledge in the design, development and operation of transformers, Weidmann is a leading integrated solutions provider for specialized product and services in the energy sector. Working closely with our customers, Weidmann continues to lead the global market delivering high quality, innovative product and service solutions. Weidmann Electrical Technology is a member of the Wicor Group with more than 3,000 employees across 30 locations. The Wicor Group is a privately held, family owned company supplying technical products and services, with more than 140 years of experience. Employing over 3,200 persons in over 30 production sites and service centers around the world, the Group has three key business areas: Weidmann Electrical Technology, Weidmann Fiber Technology and Weidmann Medical Technology.

Product range

  • Lab Services (Testing, diagnostics)
  • Transformer Monitors and Sensors
  • VAULT Platform
  • Transformer Parts
  • Transformer Paper and Fiber Board

Lab Services


Weidmann laboratory services provides the vital knowledge you need to help lower risk and improve your electrical system’s reliability. For over 30 years we’ve been providing actionable information to international standards through our range of tests, products and services. Weidmann operates multiple laboratories globally supported by a network of expert engineers.

Weidmann’s Diagnostic Service Centers are located throughout the world to deliver to you responsive service and industry leading analytical testing of electrical insulating materials. Tests include:

  • DGA
  • Fluid Quality
  • Diagnostics Programs
  • Furanic Compound Analysis

InsuLogix® H/M Hydrogen/Moisture Monitor

hm monitor.JPG

Weidmann’s InsuLogix® H incorporates patented micro-chip based technology using nickel/palladium alloy to measure hydrogen concentration in the transformer oil. An advanced proprietary coating that protects the sensor allows it to directly contact the oil without the need for membranes or filters and enables it to measure hydrogen in both oil and gas phases.  The InsuLogix® H is also available with an optional moisture sensor (H/M) which can also be easily added later in the field.The InsuLogix® H and HM easily install in the transformer drain valve or other availalble fittings making retro-fit easy and a very cost-effective replacement option for old, obsolete or damaged gas monitors in need of repair or replacement.

InsuLogix® VAULT Secure Transformer Lifecycle Management System


The transformers we rely on today in our energy grid contain a wealth of information that can be leveraged to reduce the cost of operations and maintenance, optimize loading for peak performance, and dependably boost the safety and security of the infrastructure.Purpose-built to meet the security demands of the future. Capable of serving the many different needs of transformer owners and operators with relevant data sets to support strategic decision-making, the VAULT is designed to securely manage the lifecycle and health of stationary and mobile substation transformers, within the utility network infrastructure. Unlike single-function devices, the VAULT aggregates locally and processes multi-device data in real time, eliminating the inefficiency of moving key information from where it is collected to where it is analyzed.

Transformer parts and accessories


Weidmann has established strong business relationships with leading manufacturers of transformer related accessories, products and systems in the fields of controls and instrumentationfluid managementinsulators and terminations as well as regulation and protection. In line with our partners, we are committed to continuously enhance our products and systems. Correspondingly, Weidmann provides best-in-class supply logistics, streamlined according to our customers’ requirements. Parts and accessories include:

  • Bushings, insulators and terminations
  • Controls and instrumentation
  • Fluid management
  • Regulation and protection
  • Adhesive tapes

Transformer Paper and fiber board


As the world leading supplier of Insulation Technology for key applications in the energy sector, Weidmann provides the most complete product portfolio, combining innovation, experience and know-how to deliver TransformerboardPaper and Component solutions for use in power and distribution transformers along with other applications. Weidmann is the only Insulation Technology supplier with a true global manufacturing footprint, that enables us to provide the highest quality insulation products wherever you are in the world.

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