CN101915860B

CN101915860B - Integrated output terminal structure of capacitive voltage divider

Info

Publication number: CN101915860B
Application number: CN 201010233436
Authority: CN
Inventors: 许锡海; 王国华; 谷霄飞; 许佳
Original assignee: WUXI XIRONG ELECTRIC APPLIANCE Co Ltd
Current assignee: WUXI XIRONG ELECTRIC APPLIANCE Co Ltd
Priority date: 2010-07-22
Filing date: 2010-07-22
Publication date: 2013-01-09
Anticipated expiration: 2030-07-22
Also published as: CN101915860A

Abstract

The invention discloses an integrated output terminal structure of a capacitive voltage divider, comprising a medium voltage output terminal. The medium voltage output terminal is educed from the bottom of a ceramic bushing of the capacitive voltage divider, which is provided with a flange, and comprises a medium voltage output copper rod and an epoxy resin casting wrapping outside the medium voltage output copper rod, a copper net is pre-embedded in the epoxy resin casting as a low voltage output terminal, and a low voltage output port which is connected with the copper net is also arranged on the epoxy resin casting. The medium voltage output terminal and the low voltage output terminal of the integrated output terminal structure of the capacitive voltage divider are in an integrated structure, thereby efficiently lowering a local discharge level under the highest running voltage; and an external insulating layer is the epoxy resin casting, therefore, the invention has the advantages of simple structure, low local discharge level of equipment and high safety.

Description

Integrated output terminal structure of capacitive voltage divider

Technical field

The present invention relates to a kind of power equipment, particularly relate to a kind of integrated output terminal structure of capacitive voltage divider with low local discharging level.

Background technology

At present, capacitive divider is widely used in the power equipment as a kind of voltage transformer (VT), along with the progress of technology and improving constantly of product electric pressure, the user requires more and more higher to the performance index of electric product, local discharging level is one of them very important index, shelf depreciation refers to that product is under certain applied voltage effect, the discharge that weakness in the insulation occurs, although can not forming the penetrability of whole insulation immediately, shelf depreciation punctures, but product is in long-time running, and the sustainable development of shelf depreciation can cause the damage of insulation gradually, impel insulation ag(e)ing, even cause at last the puncture of whole insulation.

See also shown in Figure 1, Fig. 1 is the structural representation of the lead-out terminal of traditional capacitive divider, the porcelain bushing shell of traditional capacitive divider, the bottom of described porcelain bushing shell is equipped with flange 3, middle pressure lead-out terminal 1 and low-voltage output 2 disconnected from each other are drawn respectively in the bottom of described flange 3, described middle pressure lead-out terminal 1 comprises middle pressure output copper rod 11 and coated insulation polytetrafluoroethylmaterial material layer 12 outside middle pressure output copper rod 11, described low-voltage output 2 comprises that low pressure output copper rod 21 and coated epoxy outside low pressure output copper rod 21 water foundry goods 22, the mesolow lead-out terminal of this structure is under the highest working voltage of equipment, local discharging level is bigger than normal, can cause the damage of insulation course, have certain potential safety hazard.

Summary of the invention

The object of the present invention is to provide a kind of integrated output terminal structure of capacitive voltage divider, it has simple in structure, and local discharging level is low, safe characteristics.

The objective of the invention is to be achieved through the following technical solutions:

A kind of integrated output terminal structure of capacitive voltage divider, it comprises middle pressure lead-out terminal and low-voltage output, and both draw the bottom of mounting flange from the capacitive divider porcelain bushing shell, and wherein, described middle pressure lead-out terminal and low-voltage output are the integral type structure.

Described middle pressure lead-out terminal comprises that middle pressure output copper rod and coated epoxy resin outside middle pressure output copper rod water foundry goods, described epoxy resin waters and is embedded with copper mesh in the foundry goods as low-voltage output, and waters the low-voltage output mouth that offers the connection copper mesh on the foundry goods in epoxy resin.

Described copper mesh and epoxy resin water the form fit of foundry goods, are circle, square or ellipsoidal structure.

Beneficial effect of the present invention is, the mesolow lead-out terminal of described integrated output terminal structure of capacitive voltage divider is the integral type structure, effectively reduce the local discharging level under the highest working voltage, and external insulation is that epoxy resin waters foundry goods, not only simple in structure, and the apparatus local discharge level is low, and is safe.

Description of drawings

The below is described in further detail the present invention with embodiment with reference to the accompanying drawings.

Fig. 1 is the structural representation of the lead-out terminal of traditional capacitive divider,

Fig. 2 is the structural representation of integrated output terminal structure of capacitive voltage divider of the present invention.

Embodiment

See also shown in Figure 2, Fig. 2 is the structural representation of integrated output terminal structure of capacitive voltage divider of the present invention, in the present embodiment, a kind of integrated output terminal structure of capacitive voltage divider, it comprises middle pressure lead-out terminal 5, described middle pressure lead-out terminal 5 is drawn from the bottom of the flange 4 that the capacitive divider porcelain bushing shell is installed, it comprises that middle pressure output copper rod 7 and coated epoxy resin outside middle pressure output copper rod 7 water foundry goods 6, described epoxy resin waters and is embedded with copper mesh 9 in the foundry goods 6 as low-voltage output, and water in epoxy resin and to offer the low-voltage output mouth 8 that can connect copper mesh 9 on the foundry goods 6, the form fit that described copper mesh 9 and epoxy resin water foundry goods 6, can be circle, square or ellipsoidal structure.

The mesolow lead-out terminal of described integrated output terminal structure of capacitive voltage divider is the integral type structure, effectively reduce the local discharging level under the highest working voltage, and external insulation is that epoxy resin waters foundry goods, not only simple in structure, and the apparatus local discharge level is low, and is safe.

Claims

1. integrated output terminal structure of capacitive voltage divider, it comprises middle pressure lead-out terminal and low-voltage output, both draw mounting flange bottom from the capacitive divider porcelain bushing shell, it is characterized in that:

Described middle pressure lead-out terminal and low-voltage output are the integral type structure; Described middle pressure lead-out terminal comprises that middle pressure output copper rod and coated epoxy resin outside middle pressure output copper rod water foundry goods, described epoxy resin waters and is embedded with copper mesh in the foundry goods as low-voltage output, and waters the low-voltage output mouth that offers the connection copper mesh on the foundry goods in epoxy resin.

2. integrated output terminal structure of capacitive voltage divider according to claim 1, it is characterized in that: described copper mesh and epoxy resin water the form fit of foundry goods, are circular, square or ellipsoidal structure.