Dry-type transformer test gear shifting switch

Abstract

The invention discloses a dry-type transformer test gear shifting switch, and belongs to a transformer test auxiliary device. The dry-type transformer test gear shifting switch comprises a quick connecting mechanism and a change-over switch. The quick connecting mechanism comprises an insulating plate and tap connecting pieces, the tap connecting pieces are installed on corresponding connecting piece installation positions on the insulating plate, and every two tap connecting pieces form a short-circuit gear terminal pair of a transformer in sequence. The change-over switch comprises relays with the same number as the short-circuit gear terminal pairs, and the two poles of each relay are electrically connected with the corresponding short-circuit gear terminal pairs on the insulating platerespectively. Fixing and electrical connection of the quick connecting mechanism can be completed only through simple operation, and installation operation is simple and rapid; and in cooperation with electric control switching of the relays, rapid and stable switching operation of short-circuit gears of the transformer can be achieved, and one-key full-automatic testing can be achieved through communication interconnection with a testing system, so that the testing and detecting efficiency of a dry-type transformer is greatly improved, and the labor cost is reduced for enterprises.

Description

technical field [0001] The invention relates to a transformer test device, more specifically, to a dry-type transformer test shift switch. Background technique [0002] The structure of dry-type transformers is mostly as figure 1 As shown, the method of voltage regulation is different from that of oil-immersed transformers using no-load tap changers. The voltage regulation of dry-type transformers is through the voltage regulation tap B2 designed on the high-voltage side of the transformer surface, and by replacing the tap B2 The position of the shorting piece B3 is realized, and the tapping tap B2 is fixed on the outer surface of the high-voltage coil B1 of the dry-type transformer (called the tapping area) through a copper nut. A general dry-type transformer has 5 gears, and its taps B2 are marked with numbers 2, 3, 4, 5, 6, and 7 respectively. When the copper shorting piece B3 short-circuits different taps B2 , to achieve the purpose of changing the number of turns of t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a dry-type transformer test shift switch to solve the existing dry-type transformer test shift short circuit test operation is cumbersome, low efficiency, and can not achieve full-automatic testing and other deficiencies, the use of the present invention The technical solution uses the quick-connection mechanism to connect the voltage-regulating taps of the dry-type transformer. The fast-connection mechanism can be fixed and electrically connected with only simple operations. The installation and operation are simple and fast; and with the electric control switching of the relay, It can realize the fast and stable switching operation of the transformer short-circuit gear, and can communicate with the test system to realize a one-button automatic test, which greatly improves the efficiency of dry-type transformer test and detection, reduces labor costs for the enterprise, and the test of the transformer Shift operation is safer and more reliable

Images