| Download | - View final version: NRC Power Calibration Facility: Power Bridge (PDF, 2.1 MiB)
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| DOI | Resolve DOI: https://doi.org/10.4224/40003480 |
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| Author | Search for: Angelo, Nikolas1 |
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| Affiliation | - National Research Council of Canada. Metrology Research Centre
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| Format | Text, Poster |
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| Conference | Metrology Poster Session: Celebrating 150 Years of the Metre Convention, 2025-04-23, Ottawa, Canada |
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| Abstract | The NRC Power Bridge is the Canadian national standard for power and energy. It maintains among the world’s highest accuracy for power frequency calibrations, with uncertainties as low as 5 µW/VA over most of its operating range. It has a wide dynamic range, producing voltage and current conditions as low as 0.02 VA (1 mA 20 V) up to 120 kVA (200 A 600 V). The current produced can be generated at any phase angle relative to the test voltage with a magnitude resolution of 1 µA/A and a phase resolution of 1 µR. Refer to Figure 1 for a diagram of the Power Bridge. NRC’s client base consists of:
• Measurement Canada
• Manufacturers of high accuracy power and energy meters
• Manufacturers of large transformers
Measurement Canada send NRC a high accuracy power and energy meter for calibration. This meter is in turn used to realize the accuracy of all electrical billing measurements throughout Canada. Transformer manufacturers require a high accuracy power and energy meter to determine the losses of their products. With the power factor being very low during the Loss Measurement, a high-quality calibrated power meter is required even to make a 1% accurate measurement. |
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| Publication date | 2025-04-23 |
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| Publisher | National Research Council of Canada. Metrology Research Centre |
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| In | |
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| Language | English |
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| Peer reviewed | No |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 2ed9c57a-3ac5-4f4d-bdd7-7c2e8d354980 |
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| Record created | 2025-04-23 |
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| Record modified | 2025-04-25 |
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