CN204066978U - A kind of 40.5kV current transformer outlet structure - Google Patents

Abstract

The utility model discloses a kind of 40.5kV current transformer outlet structure.It is the terminal (4) of a ⊥ type structure, and with the installing hole (2) of counterbore (1) and connection bus (3) on ⊥ type terminal (4), ⊥ type terminal (4) is connected as one by dormant bolt (8) with the planar terminal (6) of instrument transformer body (5).When the insulation distance being applicable to bus can not meet the demands, do not need to change instrument transformer body, ⊥ type terminal (4) is connected after only needing to mix a hole on former terminal, ⊥ type terminal (4) is connected with bus (3) and uses, effectively can increase the alternate insulation distance of connected high voltage bus, and be conducive to heat radiation, reduce and puncture or reduce partial discharge, thus effectively raise insulating reliability and the fail safe of power transmission and distribution switchgear assembly.Structure is simple, flexibility, workable, the cost of material is low.

Description

A kind of 40.5kV current transformer outlet structure

Technical field

The utility model relates to a kind of current transformer.

Background technology

In power transmission and distribution switchgear assembly, there is the requirement to insulation distance, insulation distance less easily causing punctures or partial discharge, just can not meet the requirement of domestic running environment and standard, and thermal diffusivity is bad, temperature rise, and then current transformer insulation breakdown can be caused, severe patient may set off an explosion, and causes security incident.General switchgear is subject to the restriction of overall dimension, and the insulation distance that often cabinet mesohigh bus is alternate can not reach requirement, causes certain potential safety hazard to electric power system.Current transformer is installed in switchgear assembly, is connected with bus.An instrument transformer outlet is all terminal plane outlet structure usually, but current class larger then instrument transformer outlet terminal is wider, and the insulation distance of bus will be less, so just more can not meet require that of insulation distance.

Utility model content

The purpose of this utility model is to provide and a kind ofly can increases the alternate insulation distance of the high voltage bus that connects and structure simple 40.5kV current transformer outlet structure.

A kind of 40.5kV current transformer of the utility model outlet structure, it is characterized in that, be the terminal of a ⊥ type structure, with the installing hole of counterbore and connection bus on ⊥ type terminal, the planar terminal of ⊥ type terminal and instrument transformer body is connected as one by dormant bolt.

A kind of 40.5kV current transformer outlet structure that the utility model provides, when the insulation distance being applicable to bus can not meet the demands, do not need to change instrument transformer body, the terminal of ⊥ type structure is connected after only needing to mix a hole on former terminal, the terminal of ⊥ type structure is connected with bus and uses, effectively can increase the alternate insulation distance of connected high voltage bus, and be conducive to heat radiation, reduce and puncture or reduce partial discharge, thus effectively raise insulating reliability and the fail safe of power transmission and distribution switchgear assembly.

A kind of 40.5kV current transformer outlet structure that the utility model provides, structure is simple, flexibility, workable, and the cost of material is low.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing 40.5kV current transformer outlet structure;

Fig. 2 is the structural representation of a kind of 40.5kV current transformer of the utility model outlet structure embodiment;

Fig. 3 is the structural representation of ⊥ type structural termination embodiment illustrated in fig. 2;

In figure: 1, counterbore 2, installing hole 3, bus 4, ⊥ type terminal 5, instrument transformer body

6, planar terminal 7, dormant bolt 8, bolt.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 2, a kind of 40.5kV current transformer of the utility model outlet structure, it is characterized in that, it is the terminal 4 of a ⊥ type structure, terminal 4 with installing hole 2, the ⊥ type structure of counterbore 1 and connection bus 3 on the terminal 4 of ⊥ type structure is connected as one by dormant bolt 8 with the planar terminal 6 of instrument transformer body 5.

A kind of 40.5kV current transformer outlet structure that the utility model provides, when the insulation distance being applicable to bus 3 can not meet the demands, do not need to change instrument transformer body 5, the terminal 4 of ⊥ type structure is connected after only needing to mix a hole on primary plane terminal 6, the terminal 4 of ⊥ type structure is connected with bus 3 and uses, effectively can increase the insulation distance that connected high voltage bus 3 is alternate, and be conducive to heat radiation, reduce and puncture or reduce partial discharge, thus effectively raise insulating reliability and the fail safe of power transmission and distribution switchgear assembly.

Claims (1)

1. a 40.5kV current transformer outlet structure, it is characterized in that: the terminal (4) being a ⊥ type structure, with the installing hole (2) of counterbore (1) and connection bus (3) on ⊥ type terminal (4), ⊥ type terminal (4) is connected as one by dormant bolt (8) with the planar terminal (6) of instrument transformer body (5).