A transformer load test low-voltage side adjustable short-circuit device

Abstract

The invention relates to a transformer load test low-voltage-side adjustable short-circuit device. A connection seat is sleeved on each connection terminal. An upper-end convex plate manufactured at the upper ends of every two adjacent connection seats is switched on through a telescopic copper plate. A clamping module used for clamping a connection terminal of a corresponding side is arranged in each base. In the transformer load test low-voltage-side adjustable short-circuit device, each of the four connection terminals at the low-voltage side of the transformer is embedded in a corresponding base and the upper ends of every two adjacent bases are both switched on through the telescopic copper plate. The telescopic copper plates are capable of expanding and contracting freely in a specific range. Arc shrapnels in the bases clamp tightly the connection terminals. The telescopic copper-plate structure is applicable to transformer low-voltage-side connection terminals of different distances so that installation, dismounting and rapid experiment are facilitated.

Description

technical field [0001] The invention belongs to the field of transformer load test equipment, in particular to a transformer load test low-voltage side adjustable short-circuit device. Background technique [0002] In the transformer load test, the winding on the low-voltage side needs to have a large flow capacity. The ordinary wires cannot meet the requirements of short-circuiting the four terminals. It is necessary to use a copper bar with a certain thickness for short-circuiting. Currently, the short-circuiting is on the low-voltage side. The low-temperature structure is often used: two copper plates are used to clamp the two sides of the four terminals, and the upper ends of the two copper plates are clamped by multiple pliers. However, this structure has the following problems: (1) the size of the copper bars is fixed, and copper bars of different sizes must be used for different types of transformers, causing unnecessary trouble; (2) during the test, the copper bars a...

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Problems solved by technology

However, this structure has the following problems: (1) the size of the copper bars is fixed, and copper bars of different sizes must be used for different types of transformers, causing unnecessary trouble; (2) during the test, the copper bars and the low-voltage side line Close contact is required, and multiple pliers are required for fastening when fixing; (3) The size of the pliers is large, and there are certain obstacles in the fixation due to the limitation of the space at the end of the line on the low-voltage side; (4) The fastening performance of the pliers Very strong, improper operation will cause damage to the low-voltage side line end, leaving hidden dangers

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