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From the ELSCO plant floor

Guide to Oil-Filled Transformer Maintenance

Guide to Oil-Filled Transformer Maintenance

January 19, 2024

Regular maintenance is a major part of keeping your oil-filled transformers in good working condition. Without scheduled upkeep, your transformers will be more likely to experience issues that can snowball into larger operational problems, like system failure. You don’t have to rely on reactive or condition-based maintenance when taking care of your machinery. Staying ahead of any and […]

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DOE Efficiency Standards for Dry Type Transformer

December 26, 2023

Transformer Efficiency The power efficiency of a transformer is defined as1 Efficiency = Power Used / Power Supplied = L x (KVA rating) x PF / L x (KVA rating) x PF + total losses where L is the fraction of rated load, PF is the power factor, and total losses include no-load and load […]

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Guide to Dry Type Transformers

Guide to Dry Type Transformers

December 22, 2023

Jump To: What is a Dry Type Transformer? Dry-Type Vs. Liquid Cooled (Padmount) Transformers Benefits of ELSCO Dry Type Transformers Industries That Use Dry Type Transformers Examples of ELSCO Dry Type Transformer Applications When To Choose a Dry Type Transformer Dry Type Transformer Installation Tips Key Points in Maintenance for Dry Type Transformers ELSCO’s Warranties […]

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Indicators That Dry Type Transformers Are Failing

December 18, 2023

Transformers should be built to last, and dry type transformers, in particular, avoid some maintenance issues that can occur with oil-filled transformers. However, some potential problems can still cause a transformer to fail. In this post, we’ll discuss these problems and explain how to tell if your dry type will stop working soon so you […]

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Copper vs. Aluminum Dry Type Transformer Windings

December 18, 2023

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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Why Is My Dry Type Transformer Making a Loud Humming Noise?

December 1, 2023

A transformer may hum or buzz without signaling that it is malfunctioning. Many dry type transformers produce steady humming noises when magnetized and operating normally. However, if you hear a loud hum or a buzz that’s not usually present, it could signal an issue. 4 Reasons Dry Type Transformers Make Loud Humming Noises If you […]

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Why Is Your Dry Type Transformer Overheating?

November 20, 2023

Since transformers convert high voltages into consumable power, they generate significant heat. This heat can significantly affect the transformer’s efficiency and will shorten its life span. With energy efficiency becoming a top priority in many of today’s power applications, choosing a dry type unit that can adequately meet the required power needs and subsequent thermal […]

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Should You De-Energize Transformers When Changing Taps?

November 10, 2023

Since the input power fed into a transformer may be lower or higher than the intended rate, transformers require adjustments to produce the correct secondary voltage. These fluctuations can occur for various reasons, including a power drop across a long distribution line or excessive consumption from one or more facilities. Since it is impractical and […]

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Do Oil-Filled Transformers Need a Containment Pan?

November 1, 2023

If your facility uses oil-filled transformers to convert energy and they contain more than 1,320 gallons of oil, you may be subject to the Spill Prevention, Control and Countermeasure (SPCC) Rule. The primary goal of the SPCC Rule is to contain oil discharges and prevent these discharges from reaching navigable waters and adjoining shorelines. Specific rules apply […]

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