CN207623372U - A kind of portable transformer test harness device - Google Patents

Abstract

The utility model is related to the auxiliary devices of electric testing instrument, and in particular to a kind of portable transformer test harness device.Portable transformer test harness device includes high-pressure side attachment device, low-pressure side attachment device, high pressure contact knife, low pressure contact knife, high-pressure side contact, low-pressure side contact and bottom plate, it is characterized in that, barricade is installed in the middle part of the bottom plate, the high pressure contact knife and the low pressure contact knife are fixed on the bottom plate, and the barricade both sides are in, high low pressure side contact can be electrically connected with a testing equipment；High low pressure contact knife is electrically connected with transformer high low pressure winding respectively by high low pressure side attachment device.The utility model has the beneficial effects that：Contact knife and slider group device are increased, can rapidly make transformer high low pressure winding on-off or switching tests equipment, simplify wiring process.

Description

A kind of portable transformer test harness device

Technical field

The utility model is related to the auxiliary devices of electric testing instrument, and in particular to a kind of experiment of portable transformer is with connecing Line device.

Background technology

Transformer is the important power equipment that quantity is more in power grid and distribution is scattered to be needed to ensure the normal operation of transformer It to be periodically detected and safeguard.The diversified detection project of transformer and the model of transformer are numerous at this stage, cause Experiment work task is heavy.As the project that predominantly detects of transformer, short circuit load experiment and temperature rise test are in routine testing There are the following problems：In short circuit load experiment and temperature rise test, low-pressure side is needed so that three-phase shortcircuit is connected using special copper bar, But it is more to there is transformer model when specific operation, and matching copper bar size is cumbersome, and there are the untight feelings of copper bar contact surface Condition.Temperature rise test also requires to measure first thermoelectricity of high and low pressure winding within 1.5 minutes after power failure while short circuit Resistance value unloads copper bar manually using needs when copper bar short circuit and measures again.Hand disassembly copper bar to the time and operation require compared with It is high and cumbersome, it is difficult to reach test requirements document in practical operation, it cannot be guaranteed that being measured in Best Times, therefore lead Cause the inaccuracy of test data.So being badly in need of developing simple, quick, reliable can carry out setting for transformer test wiring It is standby.

103983814 A of China Patent No. CN, publication date August in 2014 13 days, transformer synthesis test box uses Box typed structure, babinet both sides arrange multigroup binding post, and two groups of binding posts are connected by inner lead, and binding post and inside are led Line takes anti-interference method, which realizes landing wiring, while can also be applicable in different model Transformer avoids during transformer test, and repeatedly climbing and the wiring of repeatability is taken out stitches work, and experiment effect is improved Rate.But it uses claw clip to be connect with transformer, for line connection or Mulit-point Connection, could not realize that face connects, contact electricity Hinder it is larger, it is larger to the interference of test result when carrying out transformer short-circuit load test, and when replacing pilot project, Need having rewiring in many multiconductor babinets, it is more demanding to the profession of laboratory technician, and there are connect when laboratory technician's fatigue The hidden danger of wrong line.

Utility model content

The purpose of this utility model is to solve the wiring inefficiency in the experiment of transformer routine testing, influences test efficiency The problem of with result accuracy, provides a kind of applicable different model transformer, transformer high low pressure winding can rapidly be made to connect Switching is opened or the transformer test of switching tests equipment Portable connecting wire device.

Used technical solution is the utility model in order to solve the above problem：Portable transformer test harness device, Including high-pressure side attachment device, low-pressure side attachment device, high pressure contact knife, low pressure contact knife, high-pressure side sets of contacts, low-pressure side sets of contacts And bottom plate, the bottom plate are made of insulating materials, and barricade, the high pressure contact knife and the low pressure are equipped in the middle part of the bottom plate Contact knife is fixed on the bottom plate, and is in the barricade both sides；The high-pressure side attachment device connects comprising several high-pressure sides Wiring, the high-pressure side connecting line include high-pressure side conducting wire and high-pressure side clip, high-pressure side conducting wire one end and the high pressure Side clip connection, the other end are connect with the high pressure contact knife；The low-pressure side attachment device includes several low-pressure side connecting lines, institute It includes low-pressure side conducting wire and low-pressure side clip to state low-pressure side connecting line, and low-pressure side conducting wire one end connects with the low-pressure side clip It connects, the other end is connect with the low pressure contact knife.

The high voltage output terminal of the high-pressure side clip and transformer is connected, the low-pressure side clip and transformer it is low Leading-out terminal connection is pressed, is then wired in this equipment, to realize landing wiring, avoids repeatedly being climbed Wiring, thus the efficiency of transformer test wiring can be improved, while improving safety.The high-pressure side clip and described low Pressure side clip can be applicable in the transformer output terminal of different model, thus laboratory technician needs to face that transformer model is various to ask Topic.

Preferably, the bottom plate both ends are machined with high-pressure side buckling groove and low-pressure side buckling groove, the high-pressure side respectively Sets of contacts is clamped with the high-pressure side buckling groove, and the low-pressure side sets of contacts is clamped with the low-pressure side buckling groove；The high pressure Side sets of contacts includes several high-pressure side contacts；The low-pressure side sets of contacts includes several low-pressure side contacts.Increase sets of contacts structure, Make the operation that plug-in strip closes a floodgate from different contacts by the combined floodgate of plug-in strip, separating brake and slider group, it is quick that winding may be implemented On-off or switching different tests equipment, in switching tests project, it is only necessary to which slider seat effectively prevents The repeated wiring of testing equipment, work of taking out stitches, significantly improve test efficiency, while reducing and being wanted to laboratory technician's professional standards The workload of summation laboratory technician.

Preferably, the high-pressure side attachment device includes four with high-pressure side connecting line, respectively with high voltage side of transformer U, V, W phases are connected with zero；The low-pressure side attachment device include four with low-pressure side connecting line, respectively with step down side u, v, W phases are connected with zero.It is also the most transformer of quantity that three-phase transformer, which is most common in current power system, high-pressure side and low Four connecting lines, which are arranged, in pressure side can be applicable in most of transformer, cause cost to increase it is not necessary that more connecting lines are arranged.

Preferably, it also includes oscillograph, the high-pressure side connecting line and the low-pressure side connecting line with it is described Oscillograph is electrically connected.By connecting oscillograph, laboratory technician can be with the input of field observation winding or output voltage or current waveform The degree for whether having distortion and distortion to which the whether reliable of test result data judged, while also contributing to laboratory technician's hair Now with investigation equipment fault.

Preferably, the high-pressure side clip and the low-pressure side clip are bolted by two clamping plates and are constituted, The clamping plate is copper coin.The structure of clamping plate and bolt is simple, operation is easy, and can be with transformer output terminal connector shape It is contacted at close face, contact resistance is smaller, and excessive interference, the accuracy of guarantee test result will not be caused to test result.

Preferably, the material of the bottom plate is one kind in epoxy resin, ceramics and tempered glass, have on the bottom plate Knob and wheel are installed, the knob and the wheel are distributed in the both ends of the bottom plate.Epoxy resin, ceramics and tempering glass Glass be insulating materials and have certain degree of hardness, be hardly damaged, addition knob and wheel can make connector easily carries with Mobile, this is very convenient in more transformers of outgoing experiment.

Preferably, being equipped with timer on the bottom plate.To in the experiment of transformer, some pilot projects have the time It clearly requires, by timer, laboratory technician can easily hold the timing node of test operation, and guarantee test operation meets Operating instruction.

Preferably, the high-pressure side connecting line and the copper conductor that the low-pressure side connecting line is 10 millimeters of section radius. The resistivity of copper conductor is small, also smaller to the interference of test result.

Preferably, being in series with current-limiting protection device between the high low pressure contact knife and high low pressure side connecting line. It during the test if a failure occurs, can be without damage with protection test equipment when current anomaly increases.

The beneficial effects of the utility model are：The landing wiring for realizing transformer test wiring process, can be applicable in pair The transformer of different model avoids cumbersome model matching process, improves test efficiency, while realizing in switching tests Testing equipment can not need rewiring when project, only need to after separating brake mobile contact group so that laboratory technician avoids repetition again The repetition wiring for also avoiding testing equipment on transformer while wiring is taken out stitches, and test efficiency is further improved, while Reduce the requirement to laboratory technician's professional standards and the workload of laboratory technician.

Description of the drawings

Fig. 1 is portable transformer test harness device structure chart.

Fig. 2 is the structure chart of high-pressure side clip.

Wherein：1, high-pressure side clip, 2, high-pressure side connecting line, 3, low-pressure side clip, 4, low-pressure side connecting line, 5, low pressure touches Knife, 6, low-pressure side buckling groove, 7, low-pressure side sets of contacts, 8, wheel, 9, high-pressure side oscillograph, 10, knob, 11, high pressure contact knife, 12, high-pressure side sets of contacts, 13, high-pressure side buckling groove, 14, timer, 15, barricade, 16, low-pressure side oscillograph, 17, bottom plate, 18, clamping plate one, 19, clamping plate two, 20, transformer terminal sub- connecting member, 21, transformer insulated terminal, 22, conducting wire, 23, fastening spiral shell Nail.

Specific implementation mode

Below by specific embodiment, and in conjunction with attached drawing, specific embodiment of the present utility model is made further specific Explanation.

It is portable transformer test harness device structure chart as shown in Figure 1, low-pressure side buckling groove 6 is machined on bottom plate 17 With high-pressure side buckling groove 13, low-pressure side buckling groove 6 is clamped with low-pressure side sets of contacts 7, high-pressure side buckling groove 13 and high-pressure side contact 12 clamping of group, low-pressure side sets of contacts 7 can be slided on low-pressure side buckling groove 6, and high-pressure side sets of contacts 12 can be in high-pressure side card It is slided on access slot 13.Low pressure contact knife 5 and high pressure contact knife 11 are separately fixed at the both sides of barricade 15, and low pressure contact knife 5 passes through low pressure Contact knife seat is connect with low-pressure side connecting line 4, and low-pressure side connects 4 line ends and is connected with low-pressure side clip 3；High pressure contact knife 11 passes through height Pressing contact knife seat, also high-pressure side connecting line 2 connects, and connecting line 2 end in high-pressure side is connected with high-pressure side clip 1,1 He of high-pressure side clip Low-pressure side clip 3 is connected on the corresponding leading-out terminal of transformer to be tested.Low-pressure side sets of contacts 7 and high-pressure side sets of contacts Three groups of contacts are respectively fixed on 12, can different from three testing equipment connections respectively, screen is installed between two groups of contacts Shield plate, low pressure contact knife 5 can close a floodgate with a contact in low-pressure side sets of contacts 7, to make step down side to be tested export Terminal is connected on testing equipment, and when low pressure 5 separating brake of contact knife, low-pressure side sets of contacts 7 can be slided, when low pressure contact knife 5 again When combined floodgate, step down side leading-out terminal will be made to be connected from different testing equipments, high pressure contact knife 11 can be touched with high-pressure side A contact closes a floodgate in head group 12, to make high voltage side of transformer leading-out terminal to be tested be connected on testing equipment, works as high pressure When 11 separating brake of contact knife, high-pressure side sets of contacts 12 can be slided, and when high pressure contact knife 11 closes a floodgate again, high voltage side of transformer will be made defeated Go out terminal to connect from different testing equipments, to realize the rapid closing between transformer and testing equipment, separating brake and examination Test the switching of equipment.High-pressure side oscillograph 9 and low-pressure side oscillograph 16 are electrically connected with high pressure contact knife 11 and low pressure contact knife 5 respectively, By high-pressure side oscillograph 9 can with real time inspection high voltage side of transformer by electric current waveform, pass through low-pressure side oscillograph 16 The waveform of the electric current of step down side can be passed through with real time inspection.Timer 14 is fixed on bottom plate 17, can by timer Accurately to hold the timing node of test operation, the operation requirement of transformer test is easily implemented.

It carries out transformer short-circuit load test and wiring flow when temperature rise test is：1) low pressure contact knife 5 and high pressure are touched 11 separating brake of knife；First group of contact of low-pressure side sets of contacts 7 is used into the mutual short circuit of copper bar, since the specification of sets of contacts is to determine , so copper bar matching is easy, short circuit is reliable；Second group of contact of low-pressure side sets of contacts 7 and low pressure winding thermal resistance are measured Equipment connects；First group of contact of high-pressure side sets of contacts 12 is connect with short circuit load experiment power supply equipment；By high-pressure side contact Second group of contact of group 12 is connect with temperature rise test power-supply device；By the third group contact and high-voltage winding of high-pressure side sets of contacts 12 Thermal resistance measuring apparatus connects.2) high-pressure side clip 1 and high voltage side of transformer leading-out terminal are reliably connected, low-pressure side is pressed from both sides Son 3 is reliably connected with step down side leading-out terminal.3) mobile low-pressure side sets of contacts 7, makes first group of contact be located at working position It sets, low pressure contact knife 5 will be connected to when closing a floodgate with the first of low-pressure side sets of contacts 7 group of contact；Mobile high-voltage side sets of contacts 12, makes first Group contact is located at operating position, and high pressure contact knife 11 will be connected to when closing a floodgate with the first of high-pressure side sets of contacts 12 group of contact.It 4) will be low It presses contact knife 5 to close a floodgate, then high pressure contact knife 11 closes a floodgate, the low pressure winding of transformer passes through this connector short circuit, high voltage winding at this time Group is connect by this connector with experiment power supply equipment, the wiring work before being tested so as to complete short circuit load.It is short in progress During the load test of road, it can be recognized in real time by observation high-pressure side oscillograph 9 and low-pressure side oscillograph 16 and pass through transformation The waveform of the electric current of device high-voltage winding and low pressure winding, it is convenient to obtain the degree of transformer wave distortion, and if encounter Failure can be found in time, avoid leading to the test result of mistake since failure is undiscovered.5) short circuit load experiment is completed Afterwards, by 11 separating brake of high pressure contact knife, mobile high-voltage side sets of contacts 12 makes second group of contact be in operating position, then touches high pressure Knife 11 closes a floodgate, and transformer high-voltage winding is connect by this connector with temperature rise test power-supply device at this time, so as to complete Wen Sheng Wiring work before experiment, being switched to second pilot project from first pilot project only needs the position of simple switching contact group It sets, without rewiring and takes out stitches.6) while high pressure contact knife 11 closes a floodgate, start timer 14 and start timing, facilitate laboratory technician Hold the timing node of temperature rise test operation.It 7), will be high in temperature rise test when transformer conduction time Pass Test regulatory requirements Contact knife 11 is pressed, then by 5 separating brake of low pressure contact knife, mobile high-voltage side sets of contacts 12 makes third group contact be in operating position, mobile Low-pressure side sets of contacts 7 makes second group of contact be in operating position, high pressure contact knife 11 and low pressure contact knife 5 is closed a floodgate, at this time transformer High-voltage winding is connect by this connector with high-voltage winding thermal resistance measuring apparatus, transformer low voltage winding by this connector with Low pressure winding thermal resistance measuring apparatus connects, and can almost measure the thermoelectricity resistance value of transformer high low pressure winding, symbol at the first time Conjunction temperature rise test regulation carries out the requirement of thermal resistance measurement in 1.5 minutes.8) high pressure contact knife 11 and low pressure are touched after being measured 5 separating brake of knife then will remove high-pressure side clip 1 and low-pressure side clip 3 from transformer, can pass through knob after slightly arranging 10 and wheel 8 this connector is easily moved to the position of next transformer to be tested, repeating step 1-8 can be continuous Short circuit load experiment and temperature rise test are carried out for different transformers.

Experiment/measuring apparatus is connect completion with this connector in advance before on-test, in follow-up test, every time more It only needs primary connection that total Test task can be completed when changing targeted test transformer, simplifies experiment process.And process Middle experiment/measuring apparatus is not necessarily to rewiring, thus laboratory technician need not grasp the mode of connection of all experiment/measuring apparatus, i.e., The requirement to laboratory technician's professional standards is reduced, while reducing the workload of laboratory technician.

It is illustrated in figure 2 the structure chart of high-pressure side clip, in the embodiment of this high-pressure side clip, clamping plate 1 and clamping plate 2 19 are connected by trip bolt 23, and 22 one end of conducting wire is connected to the other end on clamping plate 1 and is connect with high-pressure side connecting line 2.Become The high-pressure side output end connection 20 of depressor is clipped between clamping plate 1 and clamping plate 2 19, can be made by tightening trip bolt 23 Close face contact is formed between the high-pressure side of clamping plate 1 and transformer output end connection 20, meets transformer to be formed The connection that short circuit load test and temperature rise test require, and the transformer of different model can be applicable in.

Embodiment described above is the preferable embodiment of the utility model, not makees any shape to the utility model Limitation in formula, on the premise of not exceeding the technical scheme recorded in the claims also other variations and modifications.

Claims (9)

1. a kind of portable transformer test harness device, including high-pressure side attachment device, low-pressure side attachment device, high pressure are touched Knife, low pressure contact knife, high-pressure side contact, low-pressure side contact and bottom plate, which is characterized in that the bottom plate is made of insulating materials, institute It states and barricade is installed in the middle part of bottom plate, the high pressure contact knife and the low pressure contact knife are fixed on the bottom plate, and in described Barricade both sides；The high-pressure side attachment device includes several high-pressure side connecting lines, and the high-pressure side connecting line includes high-pressure side Conducting wire and high-pressure side clip, high-pressure side conducting wire one end are connect with the high-pressure side clip, the other end and the high pressure contact knife Connection；The low-pressure side attachment device include several low-pressure side connecting lines, the low-pressure side connecting line include low-pressure side conducting wire and Low-pressure side clip, low-pressure side conducting wire one end are connect with the low-pressure side clip, and the other end is connect with the low pressure contact knife.

2. a kind of portable transformer test harness device according to claim 1, which is characterized in that the bottom plate both ends It is machined with high-pressure side buckling groove and low-pressure side buckling groove respectively, the high-pressure side sets of contacts is clamped with the high-pressure side buckling groove, The low-pressure side sets of contacts is clamped with the low-pressure side buckling groove；The high-pressure side sets of contacts includes several high-pressure side contacts；Institute It includes several low-pressure side contacts to state low-pressure side sets of contacts.

3. a kind of portable transformer test harness device according to claim 1, which is characterized in that the high-pressure side connects Connection device includes four high-pressure side connecting lines, is connected respectively with high voltage side of transformer U, V, W phase and zero；The low-pressure side connection Device includes four low-pressure side connecting lines, is connected respectively with step down side u, v, w phase and zero.

4. a kind of portable transformer test harness device according to claim 1, which is characterized in that in the middle part of the bottom plate Be fixed with high-pressure side oscillograph and low-pressure side oscillograph, the high-pressure side connecting line and the low-pressure side connecting line respectively with it is described High-pressure side oscillograph and low-pressure side oscillograph electrical connection.

5. a kind of portable transformer test harness device according to claim 1, which is characterized in that the high-pressure side folder The sub and described low-pressure side clip is bolted by two clamping plates and is constituted, and the clamping plate is copper coin.

6. a kind of portable transformer test harness device according to claim 1, which is characterized in that the material of the bottom plate Material is one kind in epoxy resin, ceramics and tempered glass, and knob and wheel, the knob and institute are equipped on the bottom plate State the both ends that wheel is fixed on the bottom plate.

7. a kind of portable transformer test harness device according to claim 1, which is characterized in that pacify on the bottom plate Equipped with timer.

8. a kind of portable transformer test harness device according to claim 1, which is characterized in that the high-pressure side connects Wiring and the copper conductor that the low-pressure side connecting line is 10 millimeters of section radius.

9. a kind of portable transformer test harness device according to claim 1, which is characterized in that the high low pressure It is in series with current-limiting protection device between contact knife and high low pressure side connecting line.