CN205643482U - Three -core alternating current pincers - Google Patents

Abstract

The utility model relates to a three -core alternating current pincers, its major technical features is: including handle, connecting axle, two tong arms and two supplementary probes, the connecting axle is installed on the handle, and install perpendicularly in the middle part top of connecting axle the bottom of two supplementary probes, and the probe contact is all installed at the top of two supplementary probes, two tong arms set up respectively in the outside of two supplementary probes, and install in the top of connecting axle the bottom of two tong arms, and the tong arm contact is all installed at the top of two tong arms. The utility model discloses a supplementary probe and tong arm constitute three magnetic flow loop, and can the simultaneous measurement three closely current signal in the wire has side by side been realized simultaneous measurement A, B, C three phase current's function having made things convenient for the in -site measurement, can be swiftly, the high efficiency, accurately carry out test to 10kW charger module, have characteristics such as small, weight warp, portable.

Description

A kind of three core alternating current pincers

Technical field

This utility model belongs to Power Quality Detection technical field, a kind of three core alternating current pincers.

Background technology

Electric automobile replacing oil by electricity is the preferable vehicles of low-carbon (LC) society, is also the certainty of automobile industry development Trend.Electric automobile fills/changes important prerequisite and the basis that electricity facility is electric automobile large-scale promotion application.Companion Along with electric automobile on the horizon is popularized in a large number, build electric automobile and fill/change electricity facility and safeguard that it is transported safely Row has vital meaning.Electric automobile and fill/change electricity facility be a Newly Sprouted Things, build and make There is also many problems, as the screening coupling of battery, the heating of equipment, the plug of attachment means connect in Mouth loose contact and charger fault etc..Additionally, along with electric automobile enters family, filling of dispersed placement Electricity stake also will be come into operation in a large number.Owing to charger, particularly charging pile are dispersed in city everywhere, to its day Often maintenance and management proposes new requirement.

At present, charger can be detected by some laboratorys, but detection method is usually relatively complex and difficulty With movement, it is only used for the detection before charger dispatches from the factory.But, existing charging and conversion electric plant facility dispersibility is relatively big, It is thus desirable to a kind of, function is complete, accuracy is high, charging and conversion electric facility is examined by mobile detecting system easily Survey.

Current clamp (or claiming current probe) is a kind of device measuring electric current attribute in the conductor, is commonly used to Measure orthodox ripple electric current.When using common current table to measure electric current, need could be by electricity after circuitry cuts Stream table accesses and measures, and this is pretty troublesome, and the most properly functioning motor does not allow do so.This Time, use current clamp just to seem more convenient, electric current can be measured in the case of not cutting off electric current.Mesh Before, the scene carrying out current measurement is used mostly unified terminal block, and A, B, C three-phase electricity streamline comes together, If using common current clamp, then needing three current clamps, causing field connection chaotic, even between wire Spacing is inadequate, is not enough to access three current clamps.

Summary of the invention

In place of the purpose of this utility model is to make up the deficiencies in the prior art, it is provided that a kind of reasonable in design, fast Prompt, efficiently, three core alternating currents pincers accurately.

This utility model solves it and technical problem is that and take techniques below scheme to realize:

A kind of three core alternating current pincers, including handle, connecting shaft, two tong arms and two auxiliary probe, institute Stating connecting shaft to be arranged on handle, the bottom of two auxiliary probe is vertically mounted on above the middle part of connecting shaft, The top of two auxiliary probe is mounted on probe contacts；Two tong arms are separately positioned on two auxiliary probe Outside, the bottom of two tong arms is arranged on the top of connecting shaft, and the top of two tong arms is mounted on tong arm and touches Point.

And, described tong arm is made up of one piece of iron core.

And, described auxiliary probe is made up of two pieces of iron cores, is provided with insulation board and makes two pieces between two pieces of iron cores Iron core mutually insulated.

And, described tong arm is arcuate structure.

Advantage of the present utility model and good effect be:

1, this utility model constitutes three flux circuits by auxiliary probe and tong arm, can measure three simultaneously Current signal in close apposition wire, reduces the come off CT that draws of ampere wires and surveys open circuit bis-times, have relatively High precision and accuracy, it is achieved that measure the function of A, B, C three-phase current, facilitate on-the-spot survey simultaneously Amount, it is possible to fast, efficiently and accurately to 10kW charger module carry out testing inspection.

2, this utility model is as the portable detection equipment of electric automobile battery charger, can substitute for three commonly Current clamp, have that volume is little, weight through, the feature such as be easy to carry.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention；

Fig. 2 is the measuring principle schematic diagram of the present invention；

Wherein, 1-handle, 2-connecting shaft, 3-tong arm, 4-auxiliary probe, 5-tong arm contact, 6-probe touches Point.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model embodiment is further described:

A kind of three core alternating current pincers, as it is shown in figure 1, include handle 1,2, two tong arm 3 and of connecting shaft Two auxiliary probe 4, described connecting shaft is arranged on handle, and the bottom of two auxiliary probe is vertically mounted on even Above the middle part of spindle, the top of two auxiliary probe is mounted on probe contacts 6；Two tong arms are arc knot Structure is also separately positioned on the outside of two auxiliary probe, and the bottom of two tong arms is arranged on the top of connecting shaft, The top of two tong arms is mounted on tong arm contact 5.Described tong arm is made up of one piece of iron core, and described auxiliary is visited Head is made up of two pieces of iron cores, is provided with insulation board and makes two pieces of iron core mutually insulateds between two pieces of iron cores.

This utility model in use, when three core alternating current icarcerations close time, by the contact of contact, Left clamp arm constitutes a flux circuit, the right side ferrum of left side auxiliary probe with the left side iron core of left side auxiliary probe The left side iron core of core and right side auxiliary probe constitutes a flux circuit, the right side iron core of right side auxiliary probe with Right clamp arm iron core constitutes a flux circuit.Each flux circuit can carry out the current measurement of a conductor Amount.Probe can clamp three different electric current lines simultaneously, it is achieved the measurement of three different electric currents.

This utility model using method, as in figure 2 it is shown, three conductors are each passed through three flux circuits, is passed through Electromagnetic induction produces the electric current proportional to main electrical current at secondary coil, then through current-voltage conversion electricity Road, revise circuit, analog information switching current, demonstrate the most on a display screen three electric currents size or It is delivered to higher level with digital signal form and detects instrument.

It is emphasized that embodiment described in the utility model is illustrative rather than determinate, Therefore this utility model includes the embodiment being not limited to described in detailed description of the invention, every by this area skill Other embodiments that art personnel draw according to the technical solution of the utility model, also belong to this utility model The scope of protection.

Claims (4)

1. core alternating current pincers, it is characterised in that: include handle, connecting shaft, two tong arms and two Individual auxiliary probe, described connecting shaft is arranged on handle, and the bottom of two auxiliary probe is vertically mounted on connection Above the middle part of axle, the top of two auxiliary probe is mounted on probe contacts；Two tong arms are separately positioned on The outside of two auxiliary probe, the bottom of two tong arms is arranged on the top of connecting shaft, the top of two tong arms It is mounted on tong arm contact.

The most according to claim 1 a kind of three core alternating currents pincers, it is characterised in that: described tong arm by One piece of iron core is constituted.

A kind of three core alternating current pincers the most according to claim 1 and 2, it is characterised in that: described auxiliary Help probe to be made up of two pieces of iron cores, be provided with insulation board between two pieces of iron cores and make two pieces of iron core mutually insulateds.

A kind of three core alternating current pincers the most according to claim 1, it is characterised in that: described tong arm is Arcuate structure.