CN203690090U - Combined current zero sequence mutual inductor - Google Patents

Abstract

The utility model relates to a combined current zero sequence mutual inductor which comprises a shell, a zero sequence mutual inductor iron core and three current mutual inductor iron cores, and the zero sequence mutual inductor iron core and the three current mutual inductor iron cores are arranged in the shell. The shell comprises four mounting columns, the three current mutual inductor iron cores are mounted on three mounting columns respectively, the zero sequence mutual inductor iron core is arranged on the four mounting columns in a sleeved mode and located above the three current mutual inductor iron cores, the three current mutual inductor iron cores and the zero sequence mutual inductor iron core are integrated, the problems that a traditional mutual inductor is complex in structure and complex to use are solved, and the combined current zero sequence mutual inductor is simple in structure, small in size and convenient to mount and use, and saves energy.

Description

Combined current zero-sequence transformer

Technical field

The utility model relates to a kind of instrument transformer, is specifically related to a kind of combined current zero-sequence transformer.

Background technology

Instrument transformer is for measuring or protection system; and all more complicated of instrument transformer structure that exist in the market; all need to be used in combination by three baroque current transformers and a zero-sequence transformer, structure is loaded down with trivial details, volume is large, involve great expense, use inconvenience.

Summary of the invention

The purpose of this utility model is to overcome the defect of prior art, and a kind of simple in structure, combined current zero-sequence transformer that volume is little, easy to use is provided.

For achieving the above object, the utility model adopts a kind of combined current zero-sequence transformer, comprise housing, be arranged on a zero-sequence transformer iron core and three current transformer cores in housing, on housing, be provided with four erection columns, three current transformer cores are separately positioned on three erection columns, and zero-sequence transformer iron core sleeve is located on four erection columns and is positioned at three current transformer core tops.

The utility model further arranges again, housing adopts the hermetically sealed making of insulating material, on housing, corresponding four erection columns are provided with four through holes, described three current transformer cores are set in three erection column lower ends on right side, and zero-sequence transformer iron core annular is set in the lateral surface of four erection columns and is positioned at the top of three current transformer cores.

By design improved, the utility model arranges three current transformers and zero-sequence transformer integral type, has solved traditional instrument transformer complex structure, has used loaded down with trivial details drawback, simple in structure, volume is little, very energy-conservation, and install and use very convenient.

Brief description of the drawings

Fig. 1 is the utility model embodiment vertical view.

Fig. 2 is the utility model example structure schematic diagram.

Fig. 3 is the utility model embodiment cutaway view.

Fig. 4 is the utility model embodiment stereogram.

Embodiment

As described in Fig. 1-4, specific embodiment of the utility model is combined current zero-sequence transformer, in the insulation shell 1 of sealing, be provided with four erection columns 2, three current transformer cores 3 are set in three erection column 2 lower ends on right side, zero-sequence transformer iron core 4 annulars are set in the lateral surface of four erection columns 2 and are positioned at the top of three current transformer cores 3, four through holes 5 of corresponding four erection columns, 2 corresponding formation on housing 1, by improvement, three current transformers and a zero-sequence transformer integral type are arranged, solve traditional instrument transformer complex structure, use loaded down with trivial details drawback, simple in structure, volume is little, very energy-conservation, and install and use very convenient.

Claims (2)

1. a combined current zero-sequence transformer, it is characterized in that: comprise housing, be arranged on a zero-sequence transformer iron core and three current transformer cores in housing, on housing, be provided with four erection columns, three current transformer cores are separately positioned on three erection columns, and zero-sequence transformer iron core sleeve is located on four erection columns and is positioned at three current transformer core tops.

2. combined current zero-sequence transformer according to claim 1, it is characterized in that: housing adopts the hermetically sealed making of insulating material, on housing, corresponding four erection columns are provided with four through holes, described three current transformer cores are set in three erection column lower ends on right side, and zero-sequence transformer iron core annular is set in the lateral surface of four erection columns and is positioned at the top of three current transformer cores.

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