From the ELSCO plant floor

Round Coil vs. Rectangular Coil for Transformers

August 14, 2020

Substation transformers feature either a round or rectangular core and coil assembly. A transformer’s iron core and windings are designed to carry magnetic flux through the transformer, and the core is typically constructed in a round, rectangular or oblong shape — although oblong cores are much less common in dry tape transformers. Round and rectangular […]

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Disc Wound vs. Layer Wound Transformer

August 14, 2020

One of the most common questions when selecting a medium voltage transformer is whether to choose a disc wound or a layer wound option. Understanding the difference between layer and disc wound transformers is crucial for optimizing your medium voltage applications, as each type features unique benefits and drawbacks. Differences of Disc vs. Layer Wound […]

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Copper vs. Aluminum Dry Type Transformer Windings

August 11, 2020

Dry type transformers typically feature either copper or aluminum windings, also known as coils. Transformer windings refer to the coils within the transformer that draw and distribute power inside the unit. There are typically two windings in a dry type transformer — one that draws power from the source and another that transfers that power […]

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Guide to Oil-Filled Transformer Maintenance

August 6, 2020

Jump To: Routine Maintenance for Oil-Filled Transformers Daily Maintenance Weekly & Monthly Maintenance Yearly Maintenance Oil-Filled Transformer Maintenance Checklist Potential Problems with Oil-Filled Transformers The Benefits of Preventive Maintenance for Oil-Filled Transformers Transformer Inspections Regular maintenance is a major part of keeping your oil-filled transformers in good working condition. Without scheduled upkeep, your transformers will […]

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Guide to Transformer kVA Ratings — How to Determine What Size Transformer You Need

July 31, 2020

Jump To: How to Determine kVA Size Calculating kVA Size Start Factor Specialty Considerations Standard Transformer Sizes How to Determine Load Voltage How to Determine Secondary Voltage How to Determine Primary Voltage Single-Phase kVA Ratings Three-Phase kVA Ratings In many industries, including health care, manufacturing, electrical contracting, higher education and corrections, reliable, high-quality transformers are […]

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Guide to Dry Type Transformer Maintenance

May 5, 2020

Jump To: Maintenance of Dry Type Transformer While Energized Maintenance While Dry Type Transformer is De-energized Checking Dry Type Transformers for Potential Problems or Defects Tests to Conduct for Routine Maintenance Preventive Maintenance Checklist for Dry Type Transformer Keep your dry type transformer running with regular service and inspections. Use this routine dry type transformer […]

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Dry-Type vs. Liquid Transformers

April 6, 2020

Jump To: Dry Type vs. Liquid Transformers Air-Cooled Transformers Liquid-Insulated Transformers Safety Requirements & Environmental Considerations Maintenance Considerations Equipment Size Requirements & Capacity Site Selection & Application Benefits and Drawbacks of Liquid Transformers Advantages and Disadvantages of Dry Type Transformers A transformer allows you to use lower voltages of electricity for various applications. In most […]

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DOE Efficiency Standards for Transformers

April 3, 2020

Jump To: What Are The DOE Efficiency Standards? Benefits of Efficiency Standards to the Customer and the Industry How to Comply With Efficiency Standards Impacts of DOE Regulations and Compliant Transformers More than 40% of the energy used in the U.S. is consumed by building operations, including the electrical equipment and appliances within those buildings. While this […]

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