CN205484647U - Many function combination formula polarity test appearance - Google Patents

Abstract

The utility model relates to a many function combination formula polarity test appearance, open a way and the test is opened a way by the power that sets up including paring for this many function combination formula polarity test appearance, the power open a way including battery, the L1 output plughole that links to each other with the battery positive voltage, with the L2 output plughole that battery cathode links to each other, the power is opened a way and still is equipped with parallelly connected first resistance, second resistance to and be used for selecting first resistance route closure or the closed select switch of second resistance route, the test is opened a way and input the jack including N1 input jack, the N2 who is used for linking to each other with the binding post of secondary side, and parallelly connected between the slide rheostat that establishes ties and have the ampere meter and be used for adjusting secondary side electric current size between N1 input jack and the N2 input jack, N1 input jack and N2 input jack have red emitting diode of forward and a reverse green emitting diode, can more audio -visually judge the inductor of secondary side or the polarity of transformer.

Description

A kind of multifunction combined polarity tester

Technical field

This utility model relates to a kind of power system device for detecting polarity, a kind of multifunction combined polarity test Instrument.

Background technology

Along with improving constantly of need for electricity, people are more and more higher to the requirement of power supply reliability, the peace of electric line Row for the national games is the important step ensureing power supply quality.And protection device is to ensure that the basic guarantor of electrical network and power supply unit safe operation Barrier, the analog acquisition of various protections is all acquired by the equipment such as current transformer, voltage transformer；And Current Mutual Inductance Device, voltage transformer, transformator etc. are the very important primary equipments of power system, and the correctness of they polarity directly affects Relay protection whether correct operation, therefore checks current transformer, TV transformer polarity the most correct, is relay protection personnel The work that must do.

Mutual inductor polarity test is commonly called as " beating polarity ", in current real work, is by a joint aneroid battery, one piece of 500 type ten thousand With table, field connection stall with goods spread out on the ground for sale is like working method.Often do a loop will again take out stitches, then wiring, lose time and manually, need Wanting three people to coordinate unanimously together, test needs repeatedly guarantee polarity accurate；Inefficiency, battery plus-negative plate exposes outside Face is dangerous, works lack of standardization.The time used by current transformer polarity in one loop of test is about 9 minutes, wiring and tearing open The line used time accounts for 63.2%, on the most of the time is used in wiring and takes out stitches so that work efficiency is the lowest, therefore to change the status quo, perfect Test device, improves work efficiency.Chinese patent CN201220719406.1, entitled Potable polarity test instrument disclose one Kind of power system device for detecting polarity, including primary side positive terminal and primary side negative terminal, at the rwo it Between be in series with test button, DC source and on and off switch；Also include secondary side positive terminal and secondary side negative terminal Terminal, is in series with ammeter between the rwo；Although said apparatus can test the polarity of curtage transformer, but just Really rate is relatively low, and the range scope of application of ammeter is narrower, deviation easily occurs.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of high efficiency, easily operated multifunction combined pole Property tester.

In order to solve the problems referred to above, this utility model provides a kind of multifunction combined polarity tester, described many merits Can include that the power supply open circuit being provided separately and test are opened a way by combination type polarity tester, described power supply open circuit includes for providing one The accumulator of secondary side DC source, the L1 output plughole being connected with battery positive voltage, be connected with battery terminal negative L2 output insert Hole, described power supply open circuit is additionally provided with the first resistance of parallel connection, the second resistance, and the resistance of described first resistance is more than described second electricity The resistance of resistance, and for selecting the selection switch of the first resistive path Guan Bi or the second resistive path Guan Bi, be used for measuring electricity Described in current transformer polarity chron, the first resistive path is connected, the second electricity described in when being used for measuring voltage transformer or polarity of transformer Resistance path is connected；Described test open circuit includes the N1 input jack for being connected, N2 input jack with the binding post of secondary side, Ammeter it is in series with and for adjusting the slip of secondary side current size between described N1 input jack and described N2 input jack Rheostat, is parallel with forward red light emitting diodes and reverse green emitting two between described N1 input jack and N2 input jack Pole is managed, and during so that the electric current of secondary side is flowed to N2 input jack by N1 input jack, green LED connects luminescence, secondary When the electric current of side is flowed to N1 input jack by N2 input jack, red light emitting diodes connects luminescence, can sentence more intuitively The inducer of disconnected secondary side or the polarity of transformator.

Further, described selection is additionally provided with main switch between switch and described accumulator, is used for controlling power supply open-circuit Break-make.

Further, described accumulator is 6V or 12V rechargeable battery, and the two ends of accumulator are connected with charging jacks, are used for To described accumulator electric energy supplement.

Further, the resistance of described first resistance is 10 ohm, and the resistance of described second resistance is 1 ohm.

Further, described ammeter is mechanical pointer centre zero scale DC milliammeter, its pointer can positive and negative bidirectional swinging, Judge the most direct.

Further, the resistance adjustable extent of slide rheostat is 0-2000 ohm, by sensitivity adjusting button scalable The size of slide rheostat resistance, and then easily the size of current of secondary side is adjusted, prevent from damaging ammeter, improve Service life.

The technique effect of utility model: (1) multifunction combined polarity tester of the present utility model, relative to existing skill Art, adds the resistance of two different resistances inside device so that this device can not only the polarity of measurement current transform er, The polarity of the equipment such as voltage transformer, transformator can also be measured；Without rewiring and change test loop, only by selecting Switch just realizes the change measuring object；Save the time of relocating, improve labor efficiency；(2) judge that polarity chron does not only has The swing of machinery indicator, also has different light display to judge so that judging nicety rate is greatly improved；Measuring instrument volume Little, lightweight, place to use is flexible, simple to operate；(3) improve the working environment of tester, decrease required test person Member, reduces labour cost.

Accompanying drawing explanation

Below in conjunction with Figure of description, this utility model is described in further detail:

Fig. 1 is the structural representation of the multifunction combined polarity tester of this utility model；

Fig. 2 is the circuit structure diagram of the multifunction combined polarity tester of this utility model；

In figure: main switch 1, charging jacks 2, L1 output plughole 3, L2 output plughole 4, ammeter 5, emitting red light two pole Pipe 6, green LED 7, N1 input jack 8, N2 input jack 9, sensitivity adjusting button 10, accumulator 11, select out Pass 12, the first resistance 13, the second resistance 14, slide rheostat 15.

Detailed description of the invention

As shown in Figure 1 to Figure 2, the multifunction combined polarity tester of the present embodiment includes being disposed on embodiment 1 Power supply open circuit in two chests and test open circuit, power supply open circuit includes that the 12V for providing primary side DC source is chargeable Battery 11, the L1 output plughole 3 being connected with 12V rechargeable battery 11 positive pole, defeated with the L2 that 12V rechargeable battery 11 negative pole is connected Going out jack 4, L1 output plughole 3, L2 output plughole 4 are for summation current transformer, voltage transformer, the wiring of transformator primary side End is connected, resistance be 10 ohm the first resistance 13, resistance be by selecting switch 12 to connect after second resistance 14 parallel connection of 1 ohm Entering power supply open circuit, test open circuit includes the N1 input jack 8 for being connected, N2 input jack 9, N1 with the binding post of secondary side Mechanical pointer centre zero scale DC milliammeter 5 it is in series with and for adjusting secondary side between input jack 8 and N2 input jack 9 The slide rheostat 15 of size of current, the resistance adjustable extent of slide rheostat 15 is 0-2000 ohm, by external sensitive The size of degree regulation button 10 adjustable sliding rheostat 15 resistance, is parallel with forward between N1 input jack and N2 input jack Red light emitting diodes 6 and reverse green LED 7, select to be provided with between switch 12 and 12V rechargeable batteries 11 always to open Close 1, for controlling the break-make of power supply open-circuit.

Use above-mentioned multifunction combined polarity tester measurement current transform er polarity chron: first connect by selection switch 12 Logical first resistance loop, then uses wire to be connected with the end of incoming cables of transformer first siding ring L1 output plughole 3；L2 exports Jack 4 is connected with the leading-out terminal of transformer primary winding by wire；By N1 input jack 8 by wire and transformer secondary line One end of circle connects；N2 input jack 9 is connected with the other end of transformer, closes main switch 1, and 12V rechargeable battery 11 passes through L1 delivery outlet 3, L2 delivery outlet 4, wire charge to the primary winding of transformer, make primary side current be risen to certain numerical value by 0, During this risen, accessed the mechanical pointer centre zero scale in the test open circuit of transformer secondary coil by wire DC milliammeter 5 pointer changes, and shows with traffic lights light；If mechanical pointer centre zero scale DC milliammeter 5 Pointer positively biased and red light emitting diodes are bright, illustrate that transformer is positive polarity；If mechanical pointer centre zero scale direct current milliampere Table 5 pointer is reverse-biased and green LED illustrates transformer reversed polarity；When disconnecting main switch 1, the electric current of primary side is from necessarily Value is reduced to 0；During this declines, if mechanical pointer centre zero scale DC milliammeter 5 pointer is reverse-biased, and green Optical diode is bright, illustrates as positive polarity；If mechanical pointer centre zero scale DC milliammeter 5 pointer positively biased and emitting red light two Pole Guan Liang, illustrates transformer reversed polarity；This process returned is to confirm test result further and check；At machinery During pointer-type centre zero scale DC milliammeter 5 throw of pointer, if throw of pointer exceedes range ability or deflects inconspicuous, can Regulated the size of slide rheostat 15 resistance by sensitivity adjusting button 10, change the size of electric current, to be adapted to measure.

When measuring voltage transformer, transformator: after switch connection the second resistance loop being selected, according to above mode of connection Carry out wiring and experimental implementation with step, the judgement of polarity can be completed.

Multifunction combined polarity tester of the present utility model, adds the electricity of two different resistances inside device Resistance so that this device can not only the polarity of measurement current transform er, additionally it is possible to measures the equipment such as voltage transformer, transformator Polarity；Without rewiring and change test loop, only by selecting switch just to realize the change measuring object；Save and change The line time, improve labor efficiency；Judge that polarity chron not only has the swing of mechanical indicator, also have different light display to judge, make Obtain judging nicety rate to be greatly improved；Measuring instrument volume is little, lightweight, and place to use is flexible, simple to operate；Improve The working environment of tester, decreases required tester, reduces labour cost.

Obviously, above-described embodiment is only for clearly demonstrating this utility model example, and is not to this reality Restriction with novel embodiment.For those of ordinary skill in the field, the most also may be used To make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.And these Belong to obvious change or variation that spirit of the present utility model extended out still in protection domain of the present utility model Among.

Claims (6)

1. a multifunction combined polarity tester, it is characterised in that including: the power supply open circuit being provided separately and test are opened Road, described power supply open circuit includes for providing the accumulator of primary side DC source (11) to be connected with accumulator (11) positive pole The L2 output plughole (4) that L1 output plughole (3) is connected with accumulator (11) negative pole, described power supply open circuit is additionally provided with the of parallel connection One resistance (13), the second resistance (14), the resistance of described first resistance (13) is more than the resistance of described second resistance (14), and For selecting the first resistance (13) path Guan Bi or selection switch (12) of the second resistance (14) path Guan Bi, it is used for measuring electric current Described in during mutual inductor polarity, the first resistive path is connected, the second resistance described in when being used for measuring voltage transformer or polarity of transformer Path is connected；Described test open circuit includes the N1 input jack (8) for being connected, N2 input jack with the binding post of secondary side (9), it is in series with ammeter (5) between described N1 input jack (8) and described N2 input jack (9) and is used for adjusting secondary side electricity The slide rheostat (15) of stream size, is parallel with forward emitting red light between described N1 input jack (8) and N2 input jack (9) Diode (6) and reverse green LED (7), insert so that the electric current of secondary side is flowed to N2 input by N1 input jack (8) During hole (9), green LED (7) connects luminescence, and the electric current of secondary side is flowed to N1 input jack by N2 input jack (9) (8), time, red light emitting diodes (6) connects luminescence.

Multifunction combined polarity tester the most according to claim 1, it is characterised in that described selection switch (12) with Main switch (1) it is additionally provided with between described accumulator (11).

Multifunction combined polarity tester the most according to claim 2, it is characterised in that described accumulator (11) is 6V Or 12V rechargeable battery, the two ends of accumulator (11) are connected with charging jacks (2).

Multifunction combined polarity tester the most according to claim 3, it is characterised in that described first resistance (13) Resistance is 10 ohm, and the resistance of described second resistance (14) is 1 ohm.

5. according to the multifunction combined polarity tester one of Claims 1-4 Suo Shu, it is characterised in that described ammeter (5) it is mechanical pointer centre zero scale DC milliammeter.

Multifunction combined polarity tester the most according to claim 5, it is characterised in that described slide rheostat (15) Resistance adjustable extent be 0-2000 ohm, big by sensitivity adjusting button (10) adjustable sliding rheostat (15) resistance Little.