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TAP CHANGER AND VACUUM SWITCHING TUBE FOR SUCH A TAP CHANGER
TAP CHANGER AND VACUUM SWITCHING TUBE FOR SUCH A TAP CHANGER
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机译:TAP CHANGER和真空开关管,用于这种TAP CHANGER
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摘要
A tap changer for uninterrupted switching over between winding taps of a tapped transformer has two load branches each for a respective phase to be switched. Each load branch has a vacuum switching contact acting as main contact and parallel thereto at least one series connection of a switch-over resistance and a respective further vacuum switching contact. The two load branches are connected with a common load shunt or connectable by mechanical switching elements. Two respective vacuum switching contacts of each load branch are constructionally combined to form a single vacuum switching tube with two separate movable contacts actuatable independently of one another and a common fixed contact. The common fixed contact is connected with the common load shunt or connectable mechanical switching contacts.
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