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Hermann Aron
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14,340. Aron, H. July 6. Energy meters.-An induction-motor meter for polyphase currents has an H-shaped iron core carrying current and pressure windings a, b, which produce magnetic fields driving two aluminium disks d. The core may be made in one piece or otherwise, and the lines of force of both driving- fields traverse its central portion c.
GB190814340D1908-07-061908-07-06Improvements in Induction Supply Meters for Polyphase Electric Currents.
ExpiredGB190814340A
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