CN202307494U

CN202307494U - Multifunctional current transformer

Info

Publication number: CN202307494U
Application number: CN2011203929219U
Authority: CN
Inventors: 王丽娟
Original assignee: TIANJIN BAILI NTK ELECTRICAL TECHNOLOGY Co Ltd
Current assignee: TIANJIN BAILI NTK ELECTRICAL TECHNOLOGY Co Ltd
Priority date: 2011-10-14
Filing date: 2011-10-14
Publication date: 2012-07-04
Anticipated expiration: 2021-10-14

Abstract

The utility model relates to a multifunctional current transformer which comprises a primary coil, a primary wiring terminal, an internal functional unit and a leading-out terminal, wherein two ends of the primary coil are connected with the primary wiring terminal; a coil of the internal functional unit is connected with the leading-out terminal; the internal functional unit comprises a metering unit and a relay power supply unit; and two functional units are arranged in the form of being isolated from each other. According to the utility model, a metering function and a relay power supply function are combined in the same transformer so as to endow the transformer with a dual function, so that no mutual inductor is required during a use process, the mounting space is reduced, the volume of electrical equipment is correspondingly reduced, the cost of the electrical equipment is lowered, and meanwhile, the mounting and the maintaining are convenient.

Description

Multi-functional current transformer

Technical field

The utility model belongs to the current transformer field, particularly a kind of multi-functional current transformer that has function of measuring and relay function simultaneously.

Background technology

In in modern times the commercial production and daily life, various current transformers are high owing to its measuring accuracy, the plurality of advantages such as little that takes up room has obtained using widely.In the prior art, metering Current Transformer and to give relay power consumption current transformer all be electric equipment independently has relatively independent function.When in same switch cubicle, using two kinds of current transformers owing to actual needs, all need corresponding installation site and space separately, and the space of occupying is bigger, caused the switch cubicle volume to increase, improved cost; Simultaneously two mutually independently electric equipment also be not easy to installation and maintenance, influenced safe in utilization.

Summary of the invention

The utility model provides a kind of multi-functional current transformer that function of measuring and relay function of supplying power are integrated in one for solving the technical problem that exists in the known technology.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: multi-functional current transformer; Comprise primary winding, primary connection terminal, built-in function unit and exit; The two ends of said primary winding are connected on the primary connection terminal; The coil of said built-in function unit is connected to said exit, and said built-in function unit comprises metering units and relay power supply unit, is mutual isolation setting between two functional units.

The utility model can also adopt following technical scheme:

Said exit form is for connecting lead-in wire lead-out mode or plate lead-out mode.

Said primary winding, built-in function unit set as one through the epoxy resin envelope.

Advantage and the good effect that the utlity model has are: the utility model combines function of measuring and relay function of supplying power through metering units and relay power supply unit are set in instrument transformer inside simultaneously, makes current transformer have dual-use function.Reduce current transformer to using taking of environment space, also made installation and maintenance become convenient simultaneously, promoted security performance.

Description of drawings

Fig. 1 is the internal structure sketch map of the utility model;

Fig. 2 is the cutaway view (lead-in wire lead-out mode) of the utility model;

Fig. 3 is that the utility model outlet method is the vertical view of plate structure.

Among the figure: 1, relay power supply unit; 2, metering units; 3, primary connection terminal; 4, primary winding; 5, epoxy resin; 6, connect lead-in wire; 7, plate.

Embodiment

For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:

See also Fig. 1 to Fig. 3, multi-functional current transformer comprises primary winding 4, primary connection terminal 3, built-in function unit and exit.The two ends of primary winding 4 are connected on the primary connection terminal 3, and the coil of built-in function unit is connected to said exit.The built-in function unit comprises between metering units 2 and 1, two functional unit of relay power supply unit and is mutual isolation setting, and each functional unit all is an element independently, influencing each other between avoiding.Wherein the major part of primary winding 4, built-in function unit and primary connection terminal 3 sets as one with epoxy resin 5 envelopes; Primary connection terminal 3 parts are exposed to and are used to connect primary circuit outside the packaging body, and the coil of built-in function unit is drawn through connecting lead-in wire 6 or plate 7.During use, primary winding 4 is linked in the power circuit, and metering units 2 inserts metering circuit, and relay power supply unit 1 is received on the relay, realizes function of measuring and relay function of supplying power respectively.

More than the embodiment of the utility model is specified, but said content is merely the preferred embodiment of the utility model, can not be considered to be used to limit the practical range of the utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the utility model.

Claims

1. multi-functional current transformer; Comprise primary winding, primary connection terminal, built-in function unit and exit; The two ends of said primary winding are connected on the primary connection terminal; The coil of said built-in function unit is connected to said exit, it is characterized in that: said built-in function unit comprises metering units and relay power supply unit, is mutual isolation setting between two functional units.

2. according to the described multi-functional current transformer of claim 1, it is characterized in that: said exit form is for connecting lead-in wire lead-out mode or plate lead-out mode.

3. according to the described multi-functional current transformer of claim 1, it is characterized in that: said primary winding, built-in function unit set as one through the epoxy resin envelope.