Voltage transformer protection device

Abstract

The invention relates to the field of electrical equipment, in particular to a voltage transformer protection device. The voltage transformer protection device comprises an insulating cylinder, an installation arm and a high-voltage current-limiting fuse installation base; the insulating cylinder is of a hollow tubular structure and gets evenly thinner from the lower wire outgoing end to the upper wire connecting end, a contact buffering spring is arranged on the inner wall of the upper wire connecting end, an anti-drop unit is arranged at the lower wire outgoing end, and the installation arm is fixedly connected to the lower wire outgoing end of the insulating cylinder; the high-voltage current-limiting fuse installation base comprises a fuse base, an insulating-rod installation end and a cross arm. The voltage transformer protection device has the advantages that replacement of a high-voltage current-limiting fuse by an insulating tension pole is facilitated in case of constant power, installation of the pole by maintenance workers is not needed, and labor intensity and complexity are lowered; by the arrangement of a fault indicator and a communicator, judgment of whether the fuse is fused or not is more visual, information tips can be directly sent to relevant personnel after fusing of the fuse, and fault sites can be judged rapidly.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to a voltage transformer protection device. Background technique [0002] A voltage transformer is a transformer with an iron core. It is mainly composed of primary and secondary coils, iron core and insulation. When a voltage U1 is applied to the primary winding, a magnetic flux is generated in the iron core , according to the law of electromagnetic induction, a secondary voltage U2 is generated in the secondary winding. Changing the number of turns of the primary or secondary winding can produce different ratios of primary voltage to secondary voltage, which can form voltage transformers with different ratios. The voltage transformer converts the high voltage into a low voltage in proportion, that is, 100V. The primary side of the voltage transformer is connected to the primary system, and the secondary side is connected to the measuring instrument, relay protection, etc.; it...

AI Technical Summary

Problems solved by technology

But there are many deficiencies, 1. To replace the high-voltage current-limiting fuse, the power must be cut off; 2. To replace the high-voltage current-limiting fuse, the pole must be installed, which increases labor intensity and complexity; 3. It is impossible to directly determine whether the fuse is blown; 4. The fuse After the fuse is broken, the relevant personnel cannot be prompted

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