Power Transformers

Dielectric Fluids

Hydrogen Monitoring in the Transformer Headspace Compared to Traditional In Oil Monitoring

The utilization of online dissolved gas analysis monitoring has proven to be one of the most effective predictors of overall transformer health and condition. A wide range of monitoring systems are available, offering multiple costs, features, and benefit combinations. Hydrogen MonitoringSingle or...

Transformer Testing & Maintenance

Why event-based fault type identification is better than a sample-by-sample approach

Introduction Fault type identification is an important step in dissolved gas analysis (DGA). When a significant amount fault gas production is detected in a transformer, we want to know what kind of physical condition could be responsible for the gassing. Knowing the type of fault can help to...

Transformer Monitoring

Dielectric Voltage Testing – Standard Methods

There are two standard methods from ASTM International: D877, Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes, and D1816, Standard Test Method for Dielectric Breakdown Voltage of Insulating Oils of Petroleum Origin Using VDE Electrodes. VDE stands...

Transformer Software & Technologies

Transformers and the Power Grid

Transformers and the power grid: A look at the critical components of the electrical system BY THE ELECTRO-FEDERATION TRANSFORMER COMMITTEE* Electrical transformers are a vital ingredient to the power grid. Without these assets, electricity generation and transmission over long distances would not...

Electrical Transformers

DOE Grants $2.2B for Transmission and Storage Projects

In a landmark move aimed at accelerating the U.S. transition to a more resilient and sustainable energy grid, the Department of Energy (DOE) has announced a groundbreaking investment of $2.2 billion in innovative transmission and energy storage projects across 18 states. This significant funding...

Utility Transformers

Advancements in Dissolved Gas Analysis: CO/CO2 Ratio

For DGA interpretation, faults identified using hydrocarbon gases are considered more serious if they appear to affect paper insulation. That is made explicit in CIGRE technical brochure 771[1]. Production of hydrocarbon gases from the oil by electrical or thermal stress does not significantly...

Home Transformation Power Transformers

Since 1952 Tallman has been Setting the Standard for Linemen

At Tallman Equipment, we are an employee-owned company that provides tools, equipment, and services for the construction and maintenance of Electrical Transmission and distribution infrastructure. Whether it’s a large, multi-state construction project, managing a storm, or providing power to a single home, Tallman Equipment has the equipment and expertise to make it all happen.

Tallman Equipment was formed in the mid-1940s when John Tallman returned from World War 2 and teamed up with friends from...