CN2382111Y - Mutual inducer with protector - Google Patents

Abstract

The utility model relates to a mutual inductor with protectors. An iron core 1 of the utility model and an enamel covered wire 6 of the utility model are positioned in a box type casing 3; insulation filling materials 2 are filled between the enamel covered wire 6 of the mutual inductor and the casing 3. The utility model has the advantages of simple and compact structure, easy fabrication, and low cost; meanwhile, the utility model is characterized in that the mutual inductor is offered the requirement that the mutual inductor does not select environmental conditions, etc.

Description

The instrument transformer that has protective device

The utility model relates to a kind of instrument transformer, especially shows the instrument transformer that has protective device.

Be extensive use of instrument transformer in power circuit equipment, the instrument transformer that is adopted requires low in the pollution of the environment, perhaps also can operate as normal in severe environmental conditions such as climax, high temperature, salt fogs.But at present institute's use instrument transformer is difficult to satisfy above-mentioned environmental condition requirement, thereby makes instrument transformer useful life short and can not guarantee defective such as operate as normal.In the patent disclosure of number of patent application 90227044.3 " a kind of double-division type current transformer " also have above-mentioned weak point.

The purpose of this utility model provides under a kind of adaptation high pollution severe environmental conditions, the instrument transformer that has protective device of energy operate as normal.

The purpose of this utility model is to realize like this, include the iron core of instrument transformer, the terminal screw of instrument transformer, the enamelled wire of instrument transformer, the iron core of its instrument transformer and the enamelled wire of instrument transformer place in the shell that is box, are filled with insulation filling material between the enamelled wire of instrument transformer and the shell.Owing at outside insulation filling material and the shell protective device of adopting of instrument transformer, not influenced by extraneous severe environmental conditions, guarantee that instrument transformer can operate as normal.

Owing to adopt technique scheme, the utlity model has simple and compact for structurely, to make easily, cost is low, brings characteristics such as not selecting the environmental condition requirement to instrument transformer simultaneously.

Below in conjunction with accompanying drawing the utility model is further specified.

Accompanying drawing is an embodiment sectional structure schematic diagram of the present utility model.

Among the figure: the enamelled wire of the terminal screw 6-instrument transformer of the iron core 2-insulation filling material 3-shell 4-electricity fraudulent use proof 5-instrument transformer of 1-instrument transformer.

As shown in drawings, the enamelled wire 6 of insulation filling material 2, instrument transformer, the iron core 1 of instrument transformer are arranged in the shell 3, shell 3 outer one jiao of terminal screw 5 that instrument transformer is arranged can be placed an electricity fraudulent use proof 4 in shell 3 upper ends.

Claims (1)

1, a kind of instrument transformer that has protective device; include the iron core (1) of instrument transformer, the terminal screw (5) of instrument transformer, the enamelled wire (6) of instrument transformer; it is characterized in that the iron core (1) of instrument transformer and the enamelled wire (6) of instrument transformer place in the shell (8) that is box, are filled with insulation filling material (2) between enamelled wire of instrument transformer (6) and the shell (3).

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