CN206059859U - A kind of special electric power secondary circuit p-wire - Google Patents

Abstract

The utility model relates to a special electric secondary circuit test line. During the electrical test process, according to the needs of the test, frequent connections and wire changes are required. The voltage, signal and other circuits are connected to the test device, and the electrical circuit on the terminal block of the device is connected to the ground grid, which is time-consuming and labor-intensive. The utility model is characterized in that it is composed of one and only one magnetic test plug, one metal connection wire and one banana plug, and the magnetic test plug includes a plug conduction joint, a magnetic ring, a plug sleeve, a conductive spring, and a plug base And the limit piece, the plug base is fixed on one end of the plug sleeve, the magnetic ring is fixed on the other end of the plug sleeve, the limit piece is located in the plug sleeve, the plug conducting joint is fixed on the top of the limit piece, and the conductive spring One end of the plug is against the base of the plug, and the other end is against the bottom of the limiter. The utility model has the advantages of simple structure and convenient use, and relies on magnetism to short-circuit the place to be connected.

Description

A special power secondary circuit test line

technical field

The utility model relates to a special electric secondary circuit test line.

Background technique

When developing, testing, testing and maintaining power and electrical secondary equipment (generator-transformer protection devices, fault recorders and excitation, etc.), power test lines are often used to add current and voltage to the terminals of the equipment, or short-circuit the terminals. At present, most of the phoenix terminal blocks (current) used by secondary equipment can be inserted with the plug of the DDC test line (mostly banana plugs) and can be in good contact, and the electrical continuity meets the test requirements. Terminal blocks for voltage, signal and partial current cannot be connected by the insertion of test wires, but need to be manually assisted by the tester or connected with test wires outside the terminal block.

During the electrical test, according to the needs of the test, frequent connection, line change, etc., voltage, signal and other circuits are connected to the test device, and the electrical circuit on the terminal block of the device is connected to the ground grid. Special test wiring personnel and test personnel are required to cooperate. , time-consuming and laborious, and the work efficiency is relatively low.

Utility model content

The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and provide a special electric secondary circuit test line with simple structure and reasonable design. It is only necessary to configure a magnetic test plug at one end of the test. The magnetic test plug is close to the terminal block and short-circuited with the place to be connected by magnetism. The other end is equipped with a banana plug dedicated to conventional power and connected to the instrument to meet the connection requirements required for the test.

The technical scheme adopted by the utility model to solve the above-mentioned problems is: the structural characteristics of the special electric secondary circuit test line are: there is only one magnetic test plug, a metal connecting wire and a banana plug, and the magnetic test The plug includes a plug conducting joint, a magnetic ring, a plug sleeve, a conductive spring, a plug base and a limit piece, the plug base is fixed at one end of the plug sleeve, and the magnetic ring is fixed at the other end of the plug sleeve. At one end, the limiter is located in the plug sleeve, the diameter of the limiter is larger than the inner diameter of the magnetic ring, the plug conducting joint is fixed on the top of the limiter, the conductive spring is located in the plug sleeve, the One end of the conductive spring is pushed against the plug base, and the other end of the conductive spring is pushed against the bottom of the limiter. The bottom of the limiter is provided with a circle of anti-skid bosses, and the other end of the conductive spring is located on the In the area surrounded by a circle of anti-slip bosses; one end of the metal connection wire is connected to the banana plug, and the other end of the metal connection wire is connected to the magnetic test plug.

As a preference, the metal connecting wire of the present invention is made of copper.

Preferably, one end of the conductive spring of the present invention is fixed on the plug base.

As a preference, the upper part of the plug conducting joint of the utility model has a hemispherical structure, and the lower part of the plug conducting joint has a cylindrical structure.

As a preference, the outer diameter of the magnetic ring of the utility model is 4mm, the diameter of the plug conducting joint is 2mm; The distance between the stages is 16mm.

Compared with the prior art, the utility model has the following advantages and effects: simple structure, easy to use, one end of the test line uses a magnetic test plug, the plug has magnetism, and the strength of the magnetism meets the reliable connection between the plug and the metal part, and the conductor of the plug The electrical connection between the part and the metal part is reliable and meets the requirements of contact resistance. The other end is equipped with a special power banana plug, which can be connected to the test instrument. The length and diameter of the connecting copper wire are designed according to the needs of the test, and the wires of various specifications are designed. The utility model is convenient to use, safe in the use process, simple in structure and high in test providing efficiency. When connecting the circuit, one end can be contacted by the magnetic test plug, and the other end is connected by the traditional banana plug. The utility model effectively solves the troublesome connection problems of the voltage terminal row, the casing of the device, the equipotential grounding network of the device and the earth.

Description of drawings

Fig. 1 is a structural schematic diagram of a dedicated power secondary circuit test line in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the magnetic test plug in the embodiment of the present invention, and the magnetic test plug is in the initial position at this time.

Fig. 3 is a schematic structural diagram of the magnetic test plug in the embodiment of the present invention, and the magnetic test plug is in the working position at this moment.

Fig. 4 is a top view structural diagram between the plug conducting joint and the magnetic ring in the embodiment of the utility model.

In the figure: 1. Magnetic test plug; 2. Metal connection wire; 3. Banana plug; 11. Plug conduction joint; 12. Magnetic ring; 13. Plug sleeve; 14. Conductive spring; 15. Plug base; 16. Limiting parts.

detailed description

The utility model will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the utility model and the utility model is not limited to the following examples.

Example.

Referring to FIGS. 1 to 4 , the special power secondary circuit test line in this embodiment is composed of one and only one magnetic test plug 1 , one metal connection line 2 and one banana plug 3 .

The magnetic test plug 1 in this embodiment includes a plug conducting joint 11, a magnetic ring 12, a plug sleeve 13, a conductive spring 14, a plug base 15 and a stopper 16, and the plug base 15 is fixed on the plug sleeve 13. One end of the magnetic ring 12 is fixed on the other end of the plug sleeve 13, the stopper 16 is located in the plug sleeve 13, the diameter of the stopper 16 is larger than the inner diameter of the magnetic ring 12, and the plug conducting joint 11 is fixed at the limit On the top of the member 16, the conductive spring 14 is located in the plug sleeve 13, one end of the conductive spring 14 is pushed against the plug base 15, and the other end of the conductive spring 14 is pushed against the bottom of the limiting member 16. A circle of anti-skid bosses is provided at the bottom of the limiting member 16, and the other end of the conductive spring 14 is located in the area surrounded by a circle of anti-skid bosses, so as to ensure that the other end of the conductive spring 14 can more effectively push against the limiting member. 16 bottom. One end of the metal connection wire 2 is connected to the banana plug 3 , and the other end of the metal connection wire 2 is connected to the magnetic test plug 1 .

In this embodiment, when the magnetic test plug 1 is in the initial state, the stopper 16 is pressed against the bottom of the magnetic ring 12 under the force of the conductive spring 14, and the top of the plug conducting joint 11 is higher than the top of the magnetic ring 12 . One end of the conductive spring 14 is fixed on the plug base 15 . The magnetic ring 12 is made of ferromagnetic material. The upper part of the plug conducting joint 11 has a hemispherical structure, and the lower part of the plug conducting joint 11 has a cylindrical structure. The outer diameter G of the magnetic ring 12 is 4 mm, and the diameter g of the plug lead-through joint 11 is 2 mm. The plug base 15 is provided with a ring of bosses, and the distance H between the top of the magnetic ring 12 and the bosses of the plug base 15 is 16mm. The plug conducting joint 11 is made of copper, the plug sleeve 13 is made of strong magnet stainless steel, and the conductive spring 14 is made of gold-plated/copper stainless steel.

The steps of the test method of the magnetic test plug 1 in the present embodiment are as follows: the diameter of the magnetic test plug 1 is smaller than the inner diameter of the terminal block, the magnetic test plug 1 is inserted into the terminal row hole, and the magnetic ring 12 relies on magnetic force to connect the magnetic ring 12 with the terminal block. The fastening screws of the terminal block are sucked together, and the plug conducting joint 11 is reliably connected to the terminal block fastening screw due to the magnetic force and the action of the conductive spring 14, so that the internal circuit of the terminal block is in harmony with the magnetic The external circuit connected to the test plug 1 is conducted, which improves the test efficiency.

One end of the test line is equipped with a magnetic test plug 1, which can be connected with the fastening screw in the terminal block, the casing of the device or the equipotential grounding bar of the device by means of the magnetic test plug 1, so as to achieve simple connection, improve test efficiency and reduce labor intensity. For this purpose, the other end is configured with a traditional banana plug 3, which is connected to specific terminals, dedicated pins and blades. One end of the test line uses a magnetic test plug 1, which has a magnetic connection, and the conduction capacity of the electrical circuit meets the test requirements. The other end of the test line is equipped with a banana plug 3. The banana plug 3 can be directly connected to the relay protection tester and the current terminal of the device, or connected to other electrical circuits through connecting pins or inserts to realize the electrical circuit connection function. Metal connecting wires 2 of different lengths, diameters, and materials are configured according to test requirements to realize test wires of different specifications.

In addition, it should be noted that the specific embodiments described in this specification may be different in parts, shapes and names of parts, and the above content described in this specification is only an illustration of the structure of the present invention. All equivalent changes or simple changes based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. Those skilled in the technical field of the utility model can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, as long as they do not deviate from the structure of the utility model or go beyond the scope defined in the claims scope, all should belong to the protection scope of the present utility model.

Claims (5)

1. A special-purpose power secondary circuit test line is characterized in that: there is only one magnetic test plug, a metal connecting wire and a banana plug to form, and the magnetic test plug includes a plug conducting joint, a magnetic ring, Plug sleeve, conductive spring, plug base and limiter, the plug base is fixed on one end of the plug sleeve, the magnetic ring is fixed on the other end of the plug sleeve, and the limiter is located on the plug sleeve In the pipe, the diameter of the limiting member is larger than the inner diameter of the magnetic ring, the plug conducting joint is fixed on the top of the limiting member, the conductive spring is located in the plug sleeve, and one end of the conductive spring is pressed against the plug base On, the other end of the conductive spring is pushed against the bottom of the limiting member, and the bottom of the limiting member is provided with a circle of anti-skid bosses, and the other end of the conductive spring is located in the area surrounded by a circle of anti-skid bosses ; One end of the metal connecting wire is connected to the banana plug, and the other end of the metal connecting wire is connected to the magnetic test plug. 2. The special power secondary circuit test line according to claim 1, characterized in that: the metal connecting line is made of copper. 3. The special power secondary circuit test line according to claim 1, characterized in that: one end of the conductive spring is fixed on the plug base. 4. The special power secondary circuit test line according to claim 1, characterized in that: the upper part of the plug conducting joint is a hemispherical structure, and the lower part of the plug conducting joint is a cylindrical structure. 5. The special power secondary circuit test line according to claim 1, characterized in that: the outer diameter of the magnetic ring is 4 mm, the diameter of the plug conducting joint is 2 mm; the plug base is provided with a circle The boss, the distance between the top of the magnetic ring and the boss of the plug base is 16mm.