Blondel's theorem, named after its discoverer, French electrical engineer André Blondel, is the result of his attempt to simplify both the measurement of electrical energy and the validation of such measurements. The result is a simple rule that specifies the minimum number of watt-hour meters required to measure the consumption of energy in any system of electrical conductors.
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| - مبرهنة بلونديل (ar)
- Blondel's theorem (en)
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| - تذكر مبرهنة بلونديل Blondel's theorem بأنه، في نظام الموصلات الكهربائية N, وعناصر N-1، متى ما ارتبطت بشكل صحيح، فأنها ستقيس الطاقة أو القدرة الكهربائية المأخوذة. يجب أن يكون الربط قد جعل لكل ملفات الكمون ربطة واحدة مشتركة إلى الموصل، وذلك في حالة عدم وجود ملف. (ar)
- Blondel's theorem, named after its discoverer, French electrical engineer André Blondel, is the result of his attempt to simplify both the measurement of electrical energy and the validation of such measurements. The result is a simple rule that specifies the minimum number of watt-hour meters required to measure the consumption of energy in any system of electrical conductors. (en)
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| - تذكر مبرهنة بلونديل Blondel's theorem بأنه، في نظام الموصلات الكهربائية N, وعناصر N-1، متى ما ارتبطت بشكل صحيح، فأنها ستقيس الطاقة أو القدرة الكهربائية المأخوذة. يجب أن يكون الربط قد جعل لكل ملفات الكمون ربطة واحدة مشتركة إلى الموصل، وذلك في حالة عدم وجود ملف. (ar)
- Blondel's theorem, named after its discoverer, French electrical engineer André Blondel, is the result of his attempt to simplify both the measurement of electrical energy and the validation of such measurements. The result is a simple rule that specifies the minimum number of watt-hour meters required to measure the consumption of energy in any system of electrical conductors. The theorem states that the power provided to a system of N conductors is equal to the algebraic sum of the power measured by N watt-meters. The N watt-meters are separately connected such that each one measures the current level in one of the N conductors and the potential level between that conductor and a common point. In a further simplification, if that common point is located on one of the conductors, that conductor's meter can be removed and only N-1 meters are required. An electrical energy meter is a watt-meter whose measurements are integrated over time, thus the theorem applies to watt-hour meters as well. Blondel wrote a paper on his results that was delivered to the held in Chicago in 1893. Although he was not present at the Congress, his paper is included in the published Proceedings. Instead of using N-1 separate meters, the meters are combined into a single housing for commercial purposes such as measuring energy delivered to homes and businesses. Each pairing of a current measuring unit plus a potential measuring unit is then termed a stator or element. Thus, for example, a meter for a four wire service will include three elements. Blondel's Theorem simplifies the work of an electrical utility worker by specifying that an N wire service will be correctly measured by a N-1 element meter. Unfortunately, confusion arises for such workers due to the existence of meters that don't contain tidy pairings of single potential measuring units with single current measuring units. For example, a meter was previously used for four wire services containing two potential coils and three current coils and called a 2.5 element meter. (en)
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