Secondary open-circuit protection device for current transformer

Abstract

The invention relates to the technical field of secondary open-circuit protection devices of current transformers and discloses a secondary open-circuit protection device of a current transformer. Thedevice comprises a base; the top of the base is fixedly connected with a box body; a box door is arranged on the surface of the box body; the box door is hinged to the box body through a hinge; firstsliding groove plates are fixedly connected to the left side and the right side of an inner cavity of the box body correspondingly; second sliding groove plates are fixedly connected to the surfacesof the first sliding groove plates; first sliding grooves are formed in the surfaces of the first sliding groove plates; and second sliding grooves are formed in the surfaces of the second sliding groove plates. By arranging the first sliding groove plates, the second sliding groove plates, the first sliding grooves, the second sliding grooves, connecting rods, sliding blocks, second screw holes and third screw holes, the connecting rods can slide outwards and stop at the tail ends of the second sliding groove plates during maintenance, so that the problem that it is very inconvenient to maintain electrical equipment in the power distribution cabinet is solved.

Description

technical field [0001] The invention relates to the technical field of a secondary open circuit protection device for a current transformer, in particular to a secondary open circuit protection device for a current transformer. Background technique [0002] Current transformer secondary side overvoltage protector. In power system, current transformer (CT) is used for the measurement and control of primary current. During normal operation, the secondary side of the transformer is in an approximate short-circuit state, and the output voltage is very low. The current transformer protector is a multi-circuit protector, which is installed in the cabinet. The protector itself has a reset button, and remote reset terminals (J1, J2) can be extended to the operating part. While protecting the output, there is a closed contact output of the relay ( K2, K3) can be used for automatic chaining. [0003] The existing current transformer secondary open-circuit protection device still has ...

AI Technical Summary

Problems solved by technology

[0003] The existing current transformer secondary open-circuit protection device still has some shortcomings in some aspects, and further improvement is needed. Most of the existing current transformer secondary open-circuit protection devices are fixed on the beam of the cabinet, and the beam and Most of the longitudinal beams are fixed, which makes the secondary open circuit protection devices of current transformers very dense, which makes it very inconvenient for maintenance personnel to maintain

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