CN204390894U - Instrument transformer structure - Google Patents

Instrument transformer structure Download PDF

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Publication number
CN204390894U
CN204390894U CN201520115783.8U CN201520115783U CN204390894U CN 204390894 U CN204390894 U CN 204390894U CN 201520115783 U CN201520115783 U CN 201520115783U CN 204390894 U CN204390894 U CN 204390894U
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CN
China
Prior art keywords
iron core
line bag
zero sequence
instrument transformer
terminals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520115783.8U
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Chinese (zh)
Inventor
黄赵虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huajian Electric Applicance Co Ltd
Original Assignee
Huajian Electric Applicance Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huajian Electric Applicance Co Ltd filed Critical Huajian Electric Applicance Co Ltd
Priority to CN201520115783.8U priority Critical patent/CN204390894U/en
Application granted granted Critical
Publication of CN204390894U publication Critical patent/CN204390894U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

The utility model relates to a kind of instrument transformer structure, comprise housing and be contained in epoxy cylinder in housing, that be wound around blue or green shell composite-insulating paper, the periphery of blue or green shell composite-insulating paper arranges measurement iron core, zero sequence iron core is also provided with in housing, the periphery measuring iron core and zero sequence iron core is wound around slotted line bag and zero sequence line bag respectively, slotted line bag and zero sequence line bag are all wrapped with iron core outsourcing insulating paper outward, slotted line bag and zero sequence line bag are separated by electrician's cardboard, the first terminals drawn by slotted line bag, and the second terminals drawn by zero sequence line bag.Measurement iron core and zero sequence iron core are contained in same instrument transformer housing, secondary induced current is drawn by the first terminals of slotted line bag, second terminals of the zero sequence line bag of multiple instrument transformer are carried out combination wiring, carry out the measurement of zero-sequence current, measurement function is many, use flexibly, can greatly improve installation effectiveness.

Description

Instrument transformer structure
Technical field
The utility model relates to a kind of instrument transformer structure.
Background technology
Traditional current transformer structure is in instrument transformer housing, arrange the epoxy cylinder being wound around blue or green shell composite-insulating paper, and in the periphery of blue or green shell composite-insulating paper, iron core measured by cover, measures on iron core and is wound around slotted line bag.During use, by bus through epoxy cylinder center, slotted line is wrapped and can be induced less secondary current, is used for carrying out protecting, the purposes such as measurement.Adopt the structure of this current transformer, because structure is single, only can carry out monophase current measurement.To carry out the measurement of other parameters of electric power to electric power main line, especially the measurement of zero-sequence current, need install additional can simultaneously through the instrument transformer structure of many buses, and such as in the main line of a three-phase four-wire system, zero sequence current mutual inductor needs can simultaneously through 4 buses of A, B, C, N.As can be seen here, the Zhou Chang great of zero-sequence transformer, expends core material many, also very heavy, installs difficulty.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, there is provided one to have simultaneously and measure iron core and zero sequence iron core, combination wiring can be carried out during use and carry out zero sequence current measurement, use flexibly, can installation effectiveness be improved, save the instrument transformer structure of iron core cost.
For achieving the above object, the utility model adopts so a kind of instrument transformer structure, comprise housing and be contained in described housing, be wound around the epoxy cylinder of blue or green shell composite-insulating paper, the periphery of described blue or green shell composite-insulating paper arranges measurement iron core, zero sequence iron core is also provided with in described housing, the periphery of described measurement iron core and described zero sequence iron core is wound around slotted line bag and zero sequence line bag respectively, described slotted line bag and described zero sequence line bag are all wrapped with iron core outsourcing insulating paper outward, described slotted line bag and described zero sequence line bag are separated by electrician's cardboard, the first terminals drawn by described slotted line bag, the second terminals drawn by described zero sequence line bag.Compared with the prior art, the beneficial effects of the utility model are embodied in: measurement iron core and zero sequence iron core are contained in same instrument transformer housing, secondary induced current is drawn by the first terminals of slotted line bag, second terminals of the zero sequence line bag of multiple instrument transformer are carried out combination wiring, carry out the measurement of zero-sequence current, measurement function is many, uses flexibly, can greatly improve installation effectiveness.
Especially, described measurement iron core and described zero sequence iron core are in being axially arranged side by side.
Especially, described measurement iron core and described zero sequence iron core radially surround setting.
What no matter measure that iron core and zero sequence iron core adopt is axially be arranged side by side structure, or radial encirclement arranges structure, all can ensure that the secondary current that obtains responded to by slotted line bag and the secondary current indifference obtained responded to by zero sequence line bag, and iron core Expenses Cost indifference.
Especially, described instrument transformer housing is provided with wire hole, and the first described terminals and the second described terminals extend out by described wire hole.First terminals and the second terminals are drawn by wire hole, protects the wire harness of the first terminals and the second terminals neat, be convenient to arrange, and be not subject to the pullling of miscellaneous part, swipe and damage.
Accompanying drawing explanation
Fig. 1 is the external structure of a kind of instrument transformer structure of the utility model;
Fig. 2 is the structure chart that the utility model embodiment 1 measures iron core and zero sequence iron core;
Fig. 3 is the structure chart that the utility model embodiment 2 measures iron core and zero sequence iron core.
Embodiment
As shown in Figure 1, 2, a kind of instrument transformer structure, comprise housing 1 and be contained in epoxy cylinder 14 in housing 1, that be wound around blue or green shell composite-insulating paper 13, the periphery of blue or green shell composite-insulating paper 13 is arranged measures iron core 11, zero sequence iron core 12 is also provided with in housing, the periphery measuring iron core 11 and zero sequence iron core 12 is wound around slotted line bag and zero sequence line bag respectively, slotted line bag and zero sequence line bag are all wrapped with iron core outsourcing insulating paper 17 outward, slotted line bag and zero sequence line bag are separated by electrician's cardboard 15, the first terminals drawn by slotted line bag, and the second terminals drawn by zero sequence line bag.
Measurement iron core 11 and zero sequence iron core 12 are in being axially arranged side by side.
Measurement iron core 11 and zero sequence iron core 12 radially surround setting.
Instrument transformer housing 1 is provided with wire hole 2, and the first terminals and the second terminals extend out by wire hole 2.
As shown in Figure 3, embodiment 2 is the another kind of structure of zero-sequence mutual inductance, comprise three instrument transformer housings 1, the epoxy cylinder 14a of a winding blue or green shell composite-insulating paper 13a is all held in three instrument transformer housings 1, the periphery of blue or green shell composite-insulating paper 13a arranges by electrician's cardboard 15a separated measurement iron core 11a and zero sequence iron core 12a, the periphery measuring iron core 11 and zero sequence iron core 12a is wound around slotted line bag 16a and zero sequence line bag respectively, slotted line bag 16a and zero sequence line bag are all wrapped with iron core outsourcing insulating paper 17a outward, as different from Example 1, measurement iron core 11a in embodiment 2 and zero sequence iron core 12a radially surrounds setting.

Claims (4)

1. an instrument transformer structure, comprise housing and be contained in described housing, be wound around the epoxy cylinder of blue or green shell composite-insulating paper, the periphery of described blue or green shell composite-insulating paper arranges measurement iron core, it is characterized in that: in described housing, be also provided with zero sequence iron core, the periphery of described measurement iron core and described zero sequence iron core is wound around slotted line bag and zero sequence line bag respectively, described slotted line bag and described zero sequence line bag are all wrapped with iron core outsourcing insulating paper outward, described slotted line bag and described zero sequence line bag are separated by electrician's cardboard, the first terminals drawn by described slotted line bag, the second terminals drawn by described zero sequence line bag.
2. instrument transformer structure according to claim 1, is characterized in that: described measurement iron core and described zero sequence iron core are in being axially arranged side by side.
3. instrument transformer structure according to claim 1, is characterized in that: described measurement iron core and described zero sequence iron core radially surround setting.
4. the instrument transformer structure according to claim 1,2 or 3, is characterized in that: described instrument transformer housing is provided with wire hole, and the first described terminals and the second described terminals extend out by described wire hole.
CN201520115783.8U 2015-02-16 2015-02-16 Instrument transformer structure Expired - Fee Related CN204390894U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520115783.8U CN204390894U (en) 2015-02-16 2015-02-16 Instrument transformer structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520115783.8U CN204390894U (en) 2015-02-16 2015-02-16 Instrument transformer structure

Publications (1)

Publication Number Publication Date
CN204390894U true CN204390894U (en) 2015-06-10

Family

ID=53363592

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520115783.8U Expired - Fee Related CN204390894U (en) 2015-02-16 2015-02-16 Instrument transformer structure

Country Status (1)

Country Link
CN (1) CN204390894U (en)

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150610

Termination date: 20190216