CN204376198U - Multipurpose low voltage short connector - Google Patents

Abstract

The utility model discloses a low-voltage multipurpose short connector, which comprises a fixing clip, a soft jumper wire and a shorting piece. The fixing clip includes a conductive fixing piece and a conductive adapter piece. The soft jumper The wiring is a kind of conductive braid, and connecting holes are arranged at both ends of the conductive braid. The short-connector includes a fixed backboard made of insulating and arc-breaking material, and the backboard is provided with suitable for different distances. The size of the fuse and the mounting hole of the base, the fuse is installed on the base. The low-voltage multi-purpose short connector of the utility model can be used as an effective means for quickly repairing power after a switch failure of different models and specifications after being applied on site, and can also be used as a fixed wire end of a short-circuit ground wire. It not only solves the problem of long repair time for unmatched switches and large power outage range, but also solves the problem that most of the switches cannot be installed at the ground wire end for maintenance, and improves the operation efficiency and power supply reliability.

Description

Low Voltage Multipurpose Short Connector

technical field

The utility model relates to a short connector, in particular to a low-voltage multi-purpose short connector.

Background technique

A low-voltage circuit breaker is a switching device that can not only switch on and off normal load current and overload current, but also switch on and off short-circuit current. In addition to the control function in the circuit, the low-voltage circuit breaker also has certain protection functions, such as overload, short circuit, undervoltage and leakage protection. At present, low-voltage circuit breakers are widely used in my country's low-voltage distribution network from the power distribution substation to the customer-side electric meter.

The application of low-voltage circuit breakers mainly has the following characteristics. First, low-voltage switches are used in the largest number of molded case circuit breakers, with thousands of types. However, there are obvious differences in the structure and size of different manufacturers and different types of switches; Molded case switches are mainly installed in GGD and GCK AC low-voltage switch cabinets and box-type transformers, and use hard copper and hard aluminum busbars to overlap the lines. This type of switchgear (transformer) generally has the characteristics of compact structure, small footprint, and large number of circuits. These characteristics determine the phase-to-phase switch of the same circuit, and the installation of switches and switches, busbars and busbars of different circuits. The spacing is very small, basically between 2CM and 10CM.

The above switch application features play a positive role in saving the manufacturing size of the switch cabinet and reducing the floor space, etc., but it also brings a series of problems in the operation and maintenance of the switch, mainly because once the switch is damaged and other faults will occur: The maintenance grounding wire of a single circuit in the narrow cabinet space cannot be installed, and the power failure circuit and area need to be expanded; second, when replacing switches with various types and sizes, there is often no spare switch of the same model to replace, and other switches cannot be replaced. It often takes a lot of time to find a switch that can be used. Once it cannot be found, the continuous mode of the busbar can only be changed, which will cause a double delay in the power failure time.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, and to provide an effective means for quickly repairing power after a switch failure of different models and specifications, and can also be used as a short-circuit grounding wire for fixed use. Low voltage multi-purpose shorts.

A low-voltage multi-purpose short connector, including a fixed clip, a soft jumper wire, a short connector,

The fixing clip includes a conductive fixing piece and a conductive adapter piece, the fixing piece is a U-shaped structure, and more than two threaded holes are arranged on one side of the U-shaped structure, and on the threaded hole Equipped with bolts, the adapter is an L-shaped adapter. The L-shaped adapter is used in conjunction with the U-shaped structural fixture. The short side of the L-shaped adapter can be inserted into the U-shaped structural fixture. In the U-shaped groove, when in use, the long side of the L-shaped adapter is facing the side of the U-shaped structural fixture with threaded holes, and more than two connection holes are provided on the long side of the L-shaped adapter. ;

The soft jumper is a conductive braid, and connecting holes are arranged at both ends of the conductive braid;

The short-connector includes a fixed backboard made of insulating and arc-interrupting material, on the backboard there are installation holes suitable for fuses with different spacings and base sizes, and the fuses are installed on the base.

The low-voltage multi-purpose short of this structure uses the fixing piece and the adapter to install the soft jumper on the busbar during installation. Specifically, the soft jumper is first locked on a connection on the long side of the adapter. Then insert the short side of the adapter into the U-shaped groove of the U-shaped structural fixture. The long side of the L-shaped adapter should face the side with the threaded hole on the U-shaped structural fixture. Then insert the busbar into the side of the lower bottom surface of the adapter and the U-shaped structure fixing part without threaded holes, and then tighten the bolts, the bolts will push the short side of the L-shaped adapter until the busbar is tightly connected. Press it tightly on the side of the U-shaped structural fixture, and then connect the other end of the copper braid to the fuse base to realize the installation of the low-voltage multi-purpose short.

Since fuses suitable for different pitches and installation holes of the base are provided on the base, the fuses on the short-connectors are exchanged according to the capacity of the original switch that needs to be replaced, so that a short-connector suitable for different Occasions, strong versatility.

The short side of the L-shaped adapter is provided with an upward flange, which is on the same side as the long side of the L-shaped adapter, parallel to the long side, and in the groove between the flange and the long side An active pressing block is provided.

Arranging the short sides in such a structure makes it convenient to place a pressing block therein, which can increase the pressing force.

A nut is also connected to the bottom of the bolt, and the nut is against the pressing block.

With this structure, the pressing force can be further increased.

The length of the short side of the L-shaped adapter matches the groove depth of the U-shaped fixture, and when the two are matched, the L-shaped adapter just leans against the edge of the groove of the U-shaped fixture.

The U-shaped structural fixture is made of chrome steel.

A heat-shrinkable tube is sheathed on the outer layer of the conductive braid.

A heat-shrinkable tube is placed on the outer layer of the conductive braid to ensure phase-to-phase insulation.

The low-voltage multi-purpose short also includes a switch box, the switch box is a box with the same shape as the back plate, and the two opposite sides of the switch box correspond to the fuse holders of the back plate. There are three through-holes for the entry and exit of the soft jumper.

When in use, the shorting piece can be placed in the switch box, which has the advantages of safety and elegant appearance; the shorting piece can also be taken out of the switch box, which has the advantage of saving installation space. At the same time, according to the size of the installation space, it is also possible to choose to install the shorting piece in the switch box for use or to take the shorting piece out of the switch box and use it alone.

The fuse on the short-connector is exchanged according to the capacity of the original switch that needs to be replaced, so that a short-connector is suitable for different occasions.

A transparent cover is provided on the switch box to facilitate observation of the fuse in the box.

It also includes two small switch boxes. The two small switch boxes can be placed side by side into the large switch box. The two sets of L-shaped adapters are respectively inserted into the U-shaped fixing slots and placed in a small one. In the switch box, and the height of the small switch box is low-voltage switch box, the height of the small switch box is equivalent to the height of the fixing piece and the adapter piece, and the height difference between the small switch box and the big switch box is enough to put the short-circuit piece.

Two small switch boxes are added, so that when the low-voltage multi-purpose short is not in use, it can be stored in the switch box through the small switch box, and the short circuit is also stored in the switch box, which is convenient for transportation with storage.

In summary, the utility model has the following advantages compared with the prior art:

The low-voltage multi-purpose short connector of the utility model can be used as an effective means for quickly repairing power after a switch failure of different types and specifications after being applied on site, and can also be used as a fixed wire end of a short-circuited grounding wire. It not only solves the problem of long repair time for unmatched switches and large power outage range, but also solves the problem that most of the switches cannot be installed at the grounding wire end of maintenance, and improves the operation efficiency and power supply reliability.

It can replace 100A, 160A, 250A, 400A and other common molded case circuit breakers. It is suitable for installation in commonly used low-voltage cabinets such as GGD and PGL, as well as pre-installed box transformers and combined box transformers, and can realize rapid power recovery; It can replace the molded case circuit breaker for line overload and short circuit protection; it can also replace the lead end of the low-voltage grounding wire and be installed in a small space without expanding the stop range, which has strong versatility.

The installation of "low-voltage multi-purpose short connector" does not require a lot of disassembly and assembly operations. When the construction preparations are completed properly, only 2 sets of 9 connecting bolts need to be tightened when connecting the wires. When the main body is fixed, only It can be hung by the hook, the operation and installation are simple and convenient, and it only takes about 15 minutes to complete the installation.

The overall outer box size of the low-voltage multi-purpose short connector can be 300×200×170 mm, the length and width are less than A4 size, and the weight is almost the same as that of an ordinary single switch. It is very convenient to carry, and one short connector can replace multiple types of switches. , so there is no need to carry a large number of switch spare parts to improve work efficiency.

Description of drawings

Figure 1 is a schematic structural view of the short connector of the present invention.

FIG. 2 is a schematic view of the back of the backboard of the shorting element.

Fig. 3 is a schematic structural diagram of the switch box.

Fig. 4 is a structural schematic diagram of the fixing clip.

Fig. 5 is a schematic structural diagram of a soft jumper.

Fig. 6 is a schematic diagram of the structure where the fixing clip is placed in the small switch box, and the small switch box is placed in the large switch box.

Fig. 7 is a schematic diagram of two sets of fixing clips facing each other.

Figure 8 is a wiring diagram of the low-voltage multi-purpose short in use.

Explanation of symbols 1 fixing clip 11 fixing piece 111 bolt 12 adapter piece 121 short side 1211 flange 122 long side 13 pressing block 2 soft jumper wire 3 shorting piece 31 back plate 32 mounting hole 4 switch box 41 through hole.

Detailed ways

Below in conjunction with embodiment the utility model is described in more detail.

Example 1

A low-voltage multi-purpose short connector, including fixed clips 1, 2 soft jumper wires, 3 short-connectors 3,

The fixing clip includes a conductive fixing piece 11 and a conductive adapter 12. The fixing piece is a U-shaped structure, and more than two threaded holes are arranged on one side of the U-shaped structure. The holes are equipped with bolts 13, and the adapter is an L-shaped adapter. The L-shaped adapter is used in conjunction with the U-shaped structural fixture. The short side 121 of the L-shaped adapter can be inserted into the U-shaped In the U-shaped groove of the structural fixture, when in use, the long side of the L-shaped adapter faces the side with the threaded hole of the U-shaped structural fixture, and two holes are arranged on the long side 122 of the L-shaped adapter. more than one connecting hole; the short side of the L-shaped adapter is provided with an upward flanging, which is on the same side as the long side of the L-shaped adapter, and is parallel to the long side, and is between the flanging 1211 and the long side of the L-shaped adapter. A movable pressing block 13 is arranged in the groove between the long sides. A nut is also connected to the bottom of the bolt, and the nut is against the pressing block. The length of the short side of the L-shaped adapter matches the groove depth of the U-shaped fixture, and when the two are matched, the L-shaped adapter just leans against the edge of the groove of the U-shaped fixture. The U-shaped structural fixture is made of chrome steel. It has the characteristics of hard texture, wear resistance, corrosion resistance, no rust and high oxidation resistance and corrosion resistance. The fixing parts made of chrome steel can ensure that the busbar can be clamped in a narrow space, and at the same time ensure the strength of the fixing, and find a balance point between the size and the strength of the material.

The L-shaped adapter is made of copper material. It has the characteristics of high hardness and good electrical conductivity. According to the regulations of GB5585-85 and GB2040-89, it can guarantee the passage of 400A current for a long time in an environment of 25°C, whether it is arranged vertically or horizontally.

The soft jumper is a copper braid, with connection holes at both ends of the conductive braid, which has the characteristics of being soft, non-deformable, and free to overlap, and is not affected by installation space, connection distance, and connection angle , It plays the role of connecting the copper and aluminum row with the short connector or the wire end of the grounding wire, and can meet the normal loop current load. A heat-shrinkable tube is sheathed on the outer layer of the copper braid. It mainly plays the role of maintaining phase-to-phase and relative ground insulation. Heat-shrinkable tubing (PE) has the advantages of excellent flame retardancy, environmental protection, insulation, softness, stable performance, low shrinkage temperature, and fast shrinkage. It can maintain good insulation under the temperature range of -55°C to 125°C and rated voltage of 600V. characteristic.

The short-connector includes a fixing back plate made of insulating and arc-breaking material, on the back plate there are mounting holes 32 suitable for fuse sizes of different specifications, and the fuse is connected to the back plate 31 .

The backboard is a fixed backboard made of a material with a higher voltage level and has an insulating and arc-breaking effect, and then three sets of fuse bases are installed on the backboard, and mounting holes are opened on the backboard according to the size of the fuses of different specifications. It realizes that fuses of different specifications can be freely installed on the same backplane, which improves the scope of application of the short connector. At the same time, the short connector can be used independently or in conjunction with the switch box to meet different application requirements.

The low-voltage multi-purpose short also includes a switch box 4, the switch box is a box with the same shape as the back plate, and the two opposite sides of the switch box correspond to the fuse holders of the back plate. Three through holes for entering and exiting the soft jumper wires are opened respectively. It also includes two small switch boxes. The two small switch boxes can be placed side by side into the large switch box. The two sets of L-shaped adapters are respectively inserted into the U-shaped fixing slots and placed in a small one. In the switch box, and the height of the small switch box is low-voltage switch box, the height of the small switch box is equivalent to the height of the fixing piece and the adapter piece, and the height difference between the small switch box and the big switch box is enough to put the short-circuit piece.

The switch box needs to scientifically and orderly integrate the shorts, jumpers, and fixing clips in the smallest possible space, and at the same time, the material type and strength must meet the characteristics of insulation and high strength. Therefore, the switch box is composed of "one large and two small" boxes, and all the parts are placed in the box respectively, and then two small switch boxes are nested in the big switch box. The switch box is both a working part and a storage part. The utilization efficiency is improved and the utility model is convenient to carry. At the same time, the switch box is made of high-quality thermoplastic ABS and polycarbonate PC materials to ensure strength and insulation, and the top cover of the large box is designed with a transparent cover, so that it is easy to observe whether the fuse in the box is blown

The parts not described in this embodiment are the same as the prior art.

Claims (8)

1. A low-voltage multi-purpose short connector, including a fixed clip, a soft jumper wire, a short connector, The fixing clip includes a conductive fixing piece and a conductive adapter piece, the fixing piece is a U-shaped structure, and more than two threaded holes are arranged on one side of the U-shaped structure, and on the threaded hole Equipped with bolts, the adapter is an L-shaped adapter. The L-shaped adapter is used in conjunction with the U-shaped structural fixture. The short side of the L-shaped adapter can be inserted into the U-shaped structural fixture. In the U-shaped groove, when in use, the long side of the L-shaped adapter is facing the side of the U-shaped structural fixture with threaded holes, and more than two connection holes are provided on the long side of the L-shaped adapter. ; The soft jumper is a conductive braid, and connection holes are arranged at both ends of the conductive braid, The short-connector includes a fixed backboard made of insulating and arc-interrupting material, on the backboard there are installation holes suitable for fuses with different spacings and base sizes, and the fuses are installed on the base. 2. The low-voltage multi-purpose short connector according to claim 1, characterized in that: the short side of the L-shaped adapter is provided with an upward flanging, and the flanging is on the same side as the long side of the L-shaped adapter , and parallel to the long side, and a movable pressing block is arranged in the groove between the flanging and the long side. 3. The low-voltage multi-purpose short connector according to claim 2, wherein a nut is connected to the bottom of the bolt, and the nut abuts against the pressing block. 4. The low-voltage multi-purpose short connector according to claim 3, characterized in that: the short side length of the L-shaped adapter matches the groove depth of the U-shaped fixing piece, and when the two are matched, the L-shaped The adapter piece just rests on the edge of the groove of the U-shaped fixing piece. 5. The low-voltage multi-purpose short connector according to claims 1-4, characterized in that: a heat-shrinkable tube is sheathed on the outer layer of the conductive braid. 6. The low-voltage multi-purpose short connector according to claim 1, characterized in that: the low-voltage multi-purpose short connector also includes a switch box, and the switch box is a box with the same shape as the back plate, On two opposite sides of the switch box corresponding to the fuse holders of the back plate, three through holes for entering and exiting the soft jumper wires are opened respectively. 7. The low-voltage multi-purpose short connector according to claim 6, characterized in that: it also includes two small switch boxes, and the two small switch boxes can be placed side by side into the large switch box, and the L of the two groups The U-shaped adapters are respectively inserted into the U-shaped fixing slots and placed in a small switch box, and the height of the small switch box is the same as that of the fixing piece and the adapter. And the height difference between the small switch box and the big switch box is enough to put the shorting piece in. 8. The low-voltage multi-purpose short connector according to claim 7, characterized in that: a transparent cover is provided on the switch box to facilitate observation of the condition of the fuse inside the box.