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Real-Time Electricity Savings for Schools Using Magnelab Current Transformers

Dara Ward Energy & Sustainability Manager St. Vrain Valley Schools Real-Time Electricity Savings for Schools Using Magnelab Current Transformers Introduction By installing flexible Magnelab current transformers in combination with eGauge real-time electricity monitoring devices, St. Vrain Valley School District (SVVSD) has been effective in pursuing advanced energy conservation and behavior programs. If executed properly and […]

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split core current sensor

How to Determine Core Size in Current Transformers

How to Determine Core Size in Current Transformers Ever wonder how to determine core size in current transformers? The following article by Eric Christensen and George Langer examines the factors related to current transformer cores. Be sure to contact Magnelab at 303-772-9100 for all your current transformer needs. To determine the correct core for a […]

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Magnelab and ReNew Our Schools

Since 2007 Magnelab and eGauge systems have supported the Center for ReSource Conservation’s ReNew Our Schools program.  That program organizes groups of between 9 and 15 schools into one month energy conservation competitions and provides real-time monitoring for the students to receive feedback on the impact of their behavior.  District energy managers then go on […]

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Figure 2: The costs and benefits of various electrical usage data sources.

The benefits of high quality electrical usage interval data

This paper will describe how to use low cost components to gain actionable information and save money on commercial electric demand rates.  Case study examples are provided from projects in Colorado. Understanding electrical load profiles and demand rates Utilities typically apply demand rates to commercial customers.  Under such rates businesses are billed for their demand […]

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Explanation of Accuracy Specifications for Current Transformers

Accuracy/Tolerance Explanations: A question is often asked about what the difference is between the tolerances specified by Magnelab and other companies. Don’t be deceived by the numbers or catch phases, know what you are getting when ordering current transformers (CT’s). When looking at the specifications for a CT, the accuracy rating or class can be […]

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Current to Voltage vs Current to Current Transformers

Many meter manufacturers and others ask why use a Magnelab standard, pre-burdened voltage output current transformer (CT) for monitoring power instead of the traditional 5 amp output current transformer (CT) that’s been used for decades. There are several similarities and differences between the two CT types–the similarities are that both CT’s operate under the same […]

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