CN2107704U

CN2107704U - Electric capacity compensation transformer

Info

Publication number: CN2107704U
Application number: CN 91222615
Authority: CN
Inventors: 刘祖植; 张宪君; 鞠世华; 肖雪
Original assignee: SHENYANG ENERGY SAVING TRANSFO
Current assignee: SHENYANG ENERGY SAVING TRANSFO
Priority date: 1991-12-07
Filing date: 1991-12-07
Publication date: 1992-06-17

Abstract

The utility model belongs to a distribution transformer product, which is an electric capacity compensation transformer used for inductive load power supply occasions, comprising an iron core, a winding and a casing. The utility model is characterized in that a capacitor which can be connected with the winding in parallel to provide capacitance output is arranged in the casing; the output end of the capacitor can be connected with the winding in parallel in the casing or can be led out from the casing. The utility model which can be operated conveniently has the advantages of providing capacitance output to power mains, enhancing power factor, reducing reactive power consumption, etc.

Description

Electric capacity compensation transformer

The utility model belongs to the distribution transformer product, is a kind of capacitance compensation transformer, is applicable to the power supply occasion of inductive load.

Existing distribution transformer is made up of iron core, winding, shell etc.Its objective is and change input and output transformation.Its weak point is: when inductive load was powered, as powering to motor, its power factor was low, reactive loss is big at transformer.

The purpose of this utility model is to overcome above-mentioned weak point of the prior art, and a kind of power factor, reduction reactive loss and capacitance compensation transformer easy to use that can improve to the inductive load power supply is provided.

The purpose of this utility model can reach by following measure: it comprises that shell that the device body, case lid and the casing that are made of unshakable in one's determination and winding etc. constitute etc. forms, and its special character is: the capacitor that can in parallelly with winding provide capacitive to export when using also is provided in the enclosure.The leading-out terminal of capacitor can be drawn on case lid or casing, so as in parallel with winding when using, or capacitor is direct in parallel with winding in the enclosure.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the structural representation of the utility model three-phase transformer embodiment;

Fig. 2 is the elementary diagram of the utility model three-phase transformer embodiment;

Fig. 3 is the structural representation of the utility model single-phase transformer embodiment;

Fig. 4 is the elementary diagram of the utility model single-phase transformer embodiment.

With reference to Fig. 1,2,3,4.Be built-in with the device body of iron core 1, high pressure winding 2, low pressure winding 3 formations at the shell of casing 4 and case lid 5 formations.Also be equipped with capacitor 6 in the enclosure.Present embodiment is that capacitor 6 is put a side at the device body.The leading-out terminal a of capacitor 6 _c, b _c, c _cCan draw from shell, present embodiment is to draw from case lid 5.During use that capacitor 6 is in parallel with high pressure winding 2 or low pressure winding 3, capacitor 6 is generally in parallel better with low pressure winding 3.Can adopt the lower capacitor of voltage 6 like this, cost is reduced.In the three-phase transformer embodiment with capacitance compensation illustrated in figures 1 and 2, during use can with leading-out terminal a, the b of three-phase low pressure winding, c respectively with the leading-out terminal a of capacitor _c, b _c, c _cLink together, form parallel-connection structure.In Fig. 3 and the single-phase transformer embodiment with capacitance compensation shown in Figure 4, during use can with leading-out terminal a, the x of low pressure winding respectively with the leading-out terminal a of capacitor 6 _c, x _cLink together, form parallel-connection structure.The leading-out terminal of capacitor 6 also can not drawn shell, and is directly in parallel with high pressure winding 2 or low pressure winding 3 in the enclosure.A among Fig. 1,2, B, C are the leading-out terminal of three-phase high-voltage winding 3.A among Fig. 3,4, X are the leading-out terminal of single-phase high voltage winding 3.

From as can be seen above-mentioned, because transformer case is built-in with capacitor, it is in parallel with winding during use, makes transformer export the perceptual weight that the capacitive component that contains is gone balance or reduced inductive load.Therefore, the utlity model has the power factor that improves power supply network, reduce reactive loss and advantage such as easy to use.

Claims

1, capacitance compensation transformer comprises the compositions such as shell that device body, casing and case lid unshakable in one's determination and that winding constitutes constitute, and it is characterized in that: also be equipped with the capacitor that capacitive output can in parallelly with winding be provided when using in the enclosure.

2, capacitance compensation transformer according to claim 1 is characterized in that: the leading-out terminal of capacitor can be in parallel with winding in the enclosure, or draw from shell;

3, capacitance compensation transformer according to claim 1 and 2, it is characterized in that: capacitor is in parallel with the low pressure winding.