Insulation device for high-voltage outlet terminal of dry-type transformer

Abstract

The invention relates to an insulation device for a high-voltage outlet terminal of a dry-type transformer, which comprises a high-voltage coil casting body, a low-voltage coil casting body, an iron core installed inside the low-voltage coil casting body and an upper clamping piece and a lower clamping piece for fixing the high-voltage coil casting body and the low-voltage coil casting body, wherein a high-voltage outlet terminal is arranged on the external wall of the high-voltage coil casting body and is connected with a lead wire. The invention is characterized in that a closed insulation sheath is arranged outside the high-voltage outlet terminal, and the side wall of the insulation sheath is provided with a lead wire outlet matched with the lead wire. Compared with the structure of the prior art, by installing the insulation sheath outside the high-voltage outlet terminal, the invention enhances the use safety of a dry-type transformer, reduces the space insulation distance of thedry-type transformer, shortens the distance from a transformer cabinet, and obviously improves the potential safety hazard caused by severe environment. The lead wire outlet is arranged on the side wall of the insulation sheath and is matched with the lead wire, thereby enabling the insulation sheath to have a complete structure.

Description

technical field [0001] The invention relates to a dry-type transformer, in particular to an insulating device for a high-voltage outlet terminal of a dry-type transformer. Background technique [0002] Dry-type transformers have been widely used in industry and civil use. For non-enclosed dry-type transformers, the outlet part is a bare charged body, which is lower than the ground. In order to protect personal safety, fixed barriers should be installed. Dry-type transformer shell The net distance of 0.6m from the barrier is the necessary space for installation and maintenance. Usually, in the case of higher system voltage, especially when the capacity of a single unit is small or the installation space is limited, there are certain technical difficulties in order to leave a sufficient air gap margin value. In particular, the existing dry-type transformer high-voltage side outgoing line is exposed in the air, which has potential safety hazards, especially poor adaptability t...

AI Technical Summary

Problems solved by technology

Usually, in the case of higher system voltage, especially when the capacity of a single unit is small or the installation space is limited, there are certain technical difficulties in order to leave a sufficient air gap margin value.

In particular, the existing dry-type transformer high-voltage side outlets are exposed in the air, and there are potential safety hazards, especially poor adaptability to harsh environments

At the same time, the entry of solid foreign objects and small animals such as rats, snakes, and cats, and spider webs will cause vicious failures such as short circuits and power outages.

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