CN108627700A - The bipolar automatic detection device of D.C. resistance and its application - Google Patents
The bipolar automatic detection device of D.C. resistance and its application Download PDFInfo
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- CN108627700A CN108627700A CN201810191555.7A CN201810191555A CN108627700A CN 108627700 A CN108627700 A CN 108627700A CN 201810191555 A CN201810191555 A CN 201810191555A CN 108627700 A CN108627700 A CN 108627700A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Abstract
The present invention relates to power detecting technologies, the especially bipolar automatic detection device of D.C. resistance and its application, first electrode terminals pass through the wired electrical connection second electrode terminals of voltmeter and direct wired electrical connection first electrode input terminal, second electrode terminals pass through the wired electrical connection second electrode input terminal of ammeter, the DC power polarity being electrically connected with first electrode terminals can be conducted to first electrode output end or second electrode output end automatically and the DC power polarity being electrically connected with second electrode terminals is conducted to second electrode output end or first electrode output end automatically by circuit switching device, then make polarity and the polarity of second electrode output end of first electrode output end opposite always.The bipolar automatic detection device of D.C. resistance is applied to carry out Insulation test, direct-current bridge test, power ground test or Power supply mixed electricity test to electrical equipment.The present invention can test Power supply mixed electricity, grounding characteristics comprehensively, complete to judge that power supply whether there is hidden danger.
Description
Technical field
The present invention relates to the bipolar automatic detection device of power detecting technology, especially D.C. resistance and its applications.
Background technology
Currently, D.C. resistance detection, test take multimeter test, megger substantially such as Power supply mixed electricity, the test of ground connection
Etc. artificial test method, the D.C. resistance of its presentation is tested, many mistakes of generally existing are surveyed, judge Power supply mixed electricity, grounding phenomenon by accident,
And test Power supply mixed electricity, be grounded presented D.C. resistance all using OWP one-way polar pressure, carry out test Power supply mixed electricity, ground connection
Characteristic judges that power supply whether there is hidden danger.OWP one-way polar pressure test Power supply mixed electricity, there are unicity for ground connection, cannot complete body
Existing power safety characteristic and discovery potential faults.
Invention content
The purpose of the present invention is to provide a kind of bipolar automatic detection device of D.C. resistance and its applications, using two-way polarity
Automatic pressure, the D.C. resistance that bipolar test power supply is presented, can test Power supply mixed electricity, grounding characteristics comprehensively, complete to judge electricity
Source whether there is hidden danger, is recorded, analyzed, monitored, warned to monitoring and test result not up to standard.
The object of the present invention is achieved like this：A kind of bipolar automatic detection device of D.C. resistance, it is automatic by bipolar polarity
Or manual switching unit is constituted, bipolar polarity automatic or manual switch unit includes first electrode terminals, second electrode wiring
End, voltmeter, ammeter and have first electrode input terminal, second electrode input terminal, first electrode output end and second electrode
The DC power polarity switching device of output end, first electrode terminals pass through the wired electrical connection second electrode terminals of voltmeter
And directly wired electrical connection first electrode input terminal, second electrode terminals are inputted by the wired electrical connection second electrode of ammeter
The DC power polarity being electrically connected with first electrode terminals can be conducted to first electrode output by end, circuit switching device automatically
The DC power polarity being electrically connected with second electrode terminals and is conducted to second electrode at second electrode output end by end automatically
Output end or first electrode output end, the polarity of the polarity for then making first electrode output end and second electrode output end phase always
Instead.
The object of the present invention is achieved like this：It is applied to electrical equipment carry out Insulation test, direct-current bridge test,
Power ground is tested or Power supply mixed electricity test.
The bipolar test pattern of the present invention has the modes such as automatic switchover test, manual switching test.The present invention can survey comprehensively
Power supply mixed electricity, grounding characteristics are tried, it is complete to judge that power supply whether there is hidden danger, monitoring and test result not up to standard is recorded,
Analysis, monitoring, warning.
Description of the drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is the Key Circuit structure connection diagram of first embodiment of the invention；
Fig. 2 is the Key Circuit structure connection diagram of second embodiment of the invention；
Fig. 3 is the Key Circuit structure connection diagram of third embodiment of the invention；
Fig. 4 is the Key Circuit structure connection diagram of fourth embodiment of the invention.
Specific implementation mode
A kind of bipolar automatic detection device of D.C. resistance, is made of, bipolar pole bipolar polarity automatic or manual switch unit
Property automatic or manual switch unit include first electrode terminals, second electrode terminals, voltmeter V, ammeter A and with the
One electrode input, second electrode input terminal, first electrode output end and the DC power polarity of second electrode output end switch
Device, first electrode terminals are electric by the wired electrical connection second electrode terminals of voltmeter V and directly wired electrical connection first
Pole input terminal, second electrode terminals can be automatic by the wired electrical connection second electrode input terminals of ammeter A, circuit switching device
By the DC power polarity being electrically connected with first electrode terminals be conducted to first electrode output end or second electrode output end and
Automatically the DC power polarity being electrically connected with second electrode terminals is conducted to second electrode output end or first electrode exports
End, then makes the polarity of first electrode output end and the polarity of second electrode output end opposite always.
The first embodiment of the present invention：As shown in Figure 1, DC power polarity switching device switches including the first circuit synchronization
Relay and second circuit synchronism switching relay；First circuit synchronization switching relay includes carrying out circuit by electromagnetic force
The the first circuit switching electromagnetic mechanism J1B and second circuit of switching switch electromagnetic mechanism J1C, and the first circuit switches electromagnetic mechanism
J1B and second circuit switching electromagnetic mechanism J1C is respectively arranged with the first incoming junction C1 and to be correspondingly arranged on first respectively defeated
Go out tie point C2, the second output connection C3, the first circuit switches electromagnetic mechanism J1B and second circuit switching electromagnetic mechanism J1C
Respective first incoming junction C1 is respectively to should be used as first electrode input terminal and second electrode input terminal, the switching of the first circuit
Electromagnetic mechanism J1B and second circuit switching electromagnetic mechanism J1C are both provided with the first conductive armature acted by electromagnetic force
D1, first conductive armature D1 one end movable contacts are simultaneously electrically connected the first incoming junction C1, and the first conductive armature D1 other ends are logical
Cross by electromagnetic force contact and be electrically connected in such a way that opposite first incoming junction C1 is movable first output connection C2 or
The second output connection C3 is contacted and is electrically connected, the first conductive armature D1 other ends can synchronize contact in linkage each other, and its is respective
First output connection C2 or the second output connection C3；Second circuit synchronism switching relay includes being carried out by electromagnetic force
The tertiary circuit switching electromagnetic mechanism J2B of circuit switching and the 4th circuit switch electromagnetic mechanism J2C, and tertiary circuit switches electromagnetic motor
Structure J2B and the 4th circuit switching electromagnetic mechanism J2C be respectively arranged with the second incoming junction C5 and third incoming junction C6 and
It is each provided with third output connection C4, tertiary circuit switches electromagnetic mechanism J2B and the 4th circuit switching electromagnetic mechanism J2C is each
From third output connection C4 respectively to should be used as first electrode output end and second electrode output end, tertiary circuit switching electricity
Magnetic mechanism J2B and the 4th circuit switching electromagnetic mechanism J2C are both provided with the second conductive armature D2 acted by electromagnetic force,
Second conductive armature D2 one end movable contacts are simultaneously electrically connected third output connection C4, the second conductive armature D2 other ends by by
Electromagnetic force contacts in such a way that opposite third output connection C4 is movable and is electrically connected the second incoming junction C5 or contact
And be electrically connected third incoming junction C6, the second conductive armature D2 other ends can each other in linkage synchronous contact its respective second
Incoming junction C5 or third incoming junction C6；The first output connection C2 that first circuit switches electromagnetic mechanism J1B is wired
It is electrically connected the third incoming junction C6 of tertiary circuit switching electromagnetic mechanism J2B, second circuit switches the first of electromagnetic mechanism J1C
The third incoming junction C6 of wired the 4th circuit of the electrical connection switching electromagnetic mechanism J2C of output connection C2, the switching of the first circuit
The second input connection of wired the 4th circuit of the electrical connection switching electromagnetic mechanism J2C of the second output connection C3 of electromagnetic mechanism J1B
Point C5, the wired electrical connection tertiary circuits of the second output connection C3 that second circuit switches electromagnetic mechanism J1C switch electromagnetic mechanism
The second incoming junction C5 of J2B.
Present invention first embodiment as shown in Figure 1：The anode of the wired electrical connection DC power supply of first electrode terminals and
The cathode of the wired electrical connection DC power supply of second electrode terminals：When the first circuit switching electromagnetic mechanism J1B and second circuit are cut
Changing the respective one end first conductive armature D1 electromagnetic mechanism J1C and being picked up simultaneously by electromagnetic force makes the first incoming junction C1
Respectively with the first output connection C2 conductings and tertiary circuit switching electromagnetic mechanism J2B and the 4th circuit switching electromagnetic mechanism J2C
Second one end conductive armature D2 fallen simultaneously by gravity after electromagnetic force disappearance and make third incoming junction C6 and third
When output connection C4 conductings, the survey of the third output connection C4 of wired electrical connection tertiary circuit switching electromagnetic mechanism J2B
Line L output direct current anodes are tried, the 4th circuit of wired electrical connection switches the test of the third output connection C4 of electromagnetic mechanism J2C
Line E exports direct current cathode；When the first circuit switches electromagnetic mechanism J1B and second circuit switching electromagnetic mechanism J1C respective the
One one end conductive armature D1 is fallen after electromagnetic force disappearance by gravity simultaneously makes the first incoming junction C1 and second export
Tie point C3 conductings and respective second conduction of tertiary circuit switching electromagnetic mechanism J2B and the 4th circuit switching electromagnetic mechanism J2C
Armature D2 is picked up by electromagnetic force simultaneously when making the second incoming junction C5 and the C4 conductings of third output connection, wired
The p-wire L for being electrically connected the third output connection C4 of tertiary circuit switching electromagnetic mechanism J2B exports direct current cathode, You Xian electricity
Connect the p-wire E output direct current anodes of the third output connection C4 of the 4th circuit switching electromagnetic mechanism J2C；Except this it
Outside, when the first circuit switches electromagnetic mechanism J1B and the respective one end first conductive armature D1 second circuit switching electromagnetic mechanism J1C
It is picked up simultaneously by electromagnetic force and tertiary circuit switching electromagnetic mechanism J2B and the 4th circuit switches electromagnetic mechanism J2C respectively
The second conductive armature D2 by electromagnetic force simultaneously picked up when or when the first circuit switching electromagnetic mechanism J1B and second electricity
Road switches the respective one end first conductive armature D1 electromagnetic mechanism J1C and is fallen simultaneously and the by gravity after electromagnetic force disappearance
Three-circuit switches electromagnetic mechanism J2B and the respective one end second conductive armature D2 the 4th circuit switching electromagnetic mechanism J2C in electromagnetism
When power is fallen after disappearing by gravity simultaneously, the third output connection of wired electrical connection tertiary circuit switching electromagnetic mechanism J2B
The p-wire L of point C4 switches the test of the third output connection C4 of electromagnetic mechanism J2C without output, the 4th circuit of wired electrical connection
Line E is without output.
The second embodiment of the present invention：It is cut as shown in Fig. 2, DC power polarity switching device is only synchronized including second circuit
Relay is changed, second circuit synchronism switching relay includes the tertiary circuit switching electromagnetism that circuit switching is carried out by electromagnetic force
Mechanism J2B and the 4th circuit switch electromagnetic mechanism J2C, and tertiary circuit switches electromagnetic mechanism J2B and the 4th circuit switches electromagnetic motor
Structure J2C is respectively arranged with the second incoming junction C5 and third incoming junction C6 and is each provided with third output connection
C4, the third that tertiary circuit switches the second incoming junction C5 and the 4th circuit switching electromagnetic mechanism J2C of electromagnetic mechanism J2B are defeated
Enter tie point C6 to be electrically connected to each other and be electrically connected jointly as second electrode output end, tertiary circuit switches electromagnetic mechanism J2B's
The second incoming junction C5 of third incoming junction C6 and the 4th circuit switching electromagnetic mechanism J2C are electrically connected to each other and common electricity
It is connected to first electrode output end, tertiary circuit switching electromagnetic mechanism J2B and the 4th circuit switching electromagnetic mechanism J2C are respectively provided with
There is a second conductive armature D2 acted by electromagnetic force, second conductive armature D2 one end movable contacts and to be electrically connected third defeated
Go out tie point C4, the second conductive armature D2 other ends by by electromagnetic force with the movable sides of opposite third output connection C4
Formula contacts and is electrically connected the second incoming junction C5 or contact and to be electrically connected third incoming junction C6, the second conductive armature D2 another
One end synchronous in linkage each other can contact its respective second incoming junction C5 or third incoming junction C6.
Present invention second embodiment as shown in Figure 2：The anode of the wired electrical connection DC power supply of first electrode terminals and
The cathode of the wired electrical connection DC power supply of second electrode terminals：When tertiary circuit switching electromagnetic mechanism J2B and the 4th circuit are cut
The respective one end second conductive armature D2 electromagnetic mechanism J2C is changed after electromagnetic force disappearance by gravity while falling keeps third defeated
When entering tie point C6 and the C4 conductings of third output connection, the third of wired electrical connection tertiary circuit switching electromagnetic mechanism J2B
The p-wire L output direct current anodes of output connection C4, the third that the 4th circuit of wired electrical connection switches electromagnetic mechanism J2C are defeated
Go out the p-wire E output direct current cathode of tie point C4；
When tertiary circuit switch electromagnetic mechanism J2B and the 4th circuit switching the respective second conductive armature D2 of electromagnetic mechanism J2C by
Electromagnetic force is picked up simultaneously when making the second incoming junction C5 and third output connection C4 conductings, wired electrical connection the
The p-wire L that three-circuit switches the third output connection C4 of electromagnetic mechanism J2B exports direct current cathode, wired electrical connection the 4th
Circuit switches the p-wire E output direct current anodes of the third output connection C4 of electromagnetic mechanism J2C.
The first embodiment of the present invention and second embodiment are illustrated by taking duplex relay as an example, it is also possible to multi-joint relay
Device, multiple relays, to meet the requirement of at least two groups contacts of circuit.
The third embodiment of the present invention：As shown in figure 3, DC power polarity switching device includes the first metal-oxide-semiconductor switching electricity
Road and the second metal-oxide-semiconductor switching circuit, the first metal-oxide-semiconductor switching circuit include the first metal-oxide-semiconductor T1 and the second metal-oxide-semiconductor T2, the second metal-oxide-semiconductor
Switching circuit includes third metal-oxide-semiconductor T3 and the 4th metal-oxide-semiconductor T4, and the drain electrode and the drain electrode of third metal-oxide-semiconductor T3 of the first metal-oxide-semiconductor T1 is mutual
Electrical connection and jointly electrical connection are used as first electrode input terminal, and the source electrode of the first metal-oxide-semiconductor T1 and the drain electrode of the second metal-oxide-semiconductor T2 are mutual
Electrical connection and jointly electrical connection are used as second electrode output end, the source electrode of the source electrode and the 4th metal-oxide-semiconductor T4 of the second metal-oxide-semiconductor T2 mutual
Electrical connection and jointly electrical connection are used as second electrode input terminal, the drain electrode of the source electrode and the 4th metal-oxide-semiconductor T4 of third metal-oxide-semiconductor T3 mutual
Electrical connection and jointly electrical connection are used as first electrode output end.
Present invention 3rd embodiment as shown in Figure 3：The anode of the wired electrical connection DC power supply of first electrode terminals and
The cathode of the wired electrical connection DC power supply of second electrode terminals：As the first metal-oxide-semiconductor T1 and the 4th metal-oxide-semiconductor T4 cut-offs and second
When metal-oxide-semiconductor T2 is connected with third metal-oxide-semiconductor T3, the p-wire L output direct current anodes of wired electrical connection first electrode output end have
The p-wire E that line is electrically connected second electrode output end exports direct current cathode；When the first metal-oxide-semiconductor T1 is connected with the 4th metal-oxide-semiconductor T4
And second metal-oxide-semiconductor T2 and third metal-oxide-semiconductor T3 when ending, the third output of wired electrical connection tertiary circuit switching electromagnetic mechanism J2B
The p-wire L of tie point C4 exports direct current cathode, and the third output that the 4th circuit of wired electrical connection switches electromagnetic mechanism J2C connects
The p-wire E output direct current anodes of contact C4；In addition to this, the p-wire L of wired electrical connection first electrode output end is without defeated
Go out, the p-wire E of wired electrical connection second electrode output end is without output；But the first metal-oxide-semiconductor need to be made by prior art measure
T1 and the second metal-oxide-semiconductor T2 is not allowed to simultaneously turn on and third metal-oxide-semiconductor T3 and the 4th metal-oxide-semiconductor T4 need to be made also not to be allowed to lead simultaneously
It is logical, to ensure that metal-oxide-semiconductor will not be damaged.
The fourth embodiment of the present invention：As shown in figure 4, DC power polarity switching device is cut including the first NPN triode
Circuit and the second NPN triode switching circuit are changed, the first NPN triode switching circuit includes the first NPN triode Q1 and second
NPN triode Q2, the second NPN triode switching circuit include third NPN triode Q3 and the 4th NPN triode Q4, the first NPN
The collector of triode is electrically connected to each other with the collector of third NPN triode Q3 and is electrically connected jointly and inputted as first electrode
End, the emitter of the first NPN triode Q1 are electrically connected to each other with the collector of the second NPN triode Q2 and are electrically connected conduct jointly
Second electrode output end, the emitter of the second NPN triode Q2 and the emitter of the 4th NPN triode Q4 are electrically connected to each other and are total to
It is used as second electrode input terminal, the collector phase of the emitter and the 4th NPN triode Q4 of third NPN triode Q3 with electrical connection
It is mutually electrically connected and common electrical connection is used as first electrode output end.
Present invention fourth embodiment as shown in Figure 4：The anode of the wired electrical connection DC power supply of first electrode terminals and
The cathode of the wired electrical connection DC power supply of second electrode terminals：When the first NPN triode Q1 and the 4th NPN triode Q4 are ended
And second NPN triode Q2 when being connected with third NPN triode Q3, the p-wire L of wired electrical connection first electrode output end is defeated
Go out direct current anode, the p-wire E of wired electrical connection second electrode output end exports direct current cathode；When the first NPN triode
When Q1 is connected with the 4th NPN triode Q4 and the second NPN triode Q2 and third NPN triode Q3 ends, wired electrical connection the
The p-wire L of one electrode output exports direct current cathode, and the p-wire E of wired electrical connection second electrode output end exports direct current
Electric anode；In addition to this, for the p-wire L of wired electrical connection first electrode output end without output, wired electrical connection second electrode is defeated
The p-wire E of outlet is without output；But the first NPN triode Q1 and the second NPN triode Q2 need to be made by prior art measure
It is not allowed to simultaneously turn on and third NPN triode Q3 and the 4th NPN triode Q4 need to be made also not to be allowed to simultaneously turn on, with true
Protecting NPN triode will not be damaged.
The fifth embodiment of the present invention：DC power polarity switching device include the first PNP type triode switching circuit and
Second PNP type triode switching circuit, the first PNP type triode switching circuit include the first PNP type triode and the second positive-negative-positive
Triode, the second PNP type triode switching circuit include third PNP type triode and the 4th PNP type triode, the first PNP tri-
The emitter of pole pipe is electrically connected to each other with the emitter of third transistor and is electrically connected jointly as first electrode input terminal, first
The collector of PNP type triode is electrically connected to each other with the emitter of the second PNP type triode and is electrically connected jointly as the second electricity
The collector of pole output end, the collector of the second PNP type triode and the 4th PNP type triode is electrically connected to each other and is electrically connected jointly
Connect as second electrode input terminal, the emitter of the collector of third PNP type triode and the 4th triode be electrically connected to each other and
Common electrical connection is used as first electrode output end.
The fifth embodiment of the present invention is contrasted in fourth embodiment, therefore is omitted corresponding to the attached drawing of the 5th embodiment.
The bipolar automatic detection device of D.C. resistance is applied to carry out Insulation test, direct-current bridge test, electricity to electrical equipment
Source earthing test or Power supply mixed electricity test.
Claims (7)
1. a kind of bipolar automatic detection device of D.C. resistance, it is characterised in that：By bipolar polarity automatic or manual switch unit structure
At bipolar polarity automatic or manual switch unit includes first electrode terminals, second electrode terminals, voltmeter, ammeter
With the DC power supply with first electrode input terminal, second electrode input terminal, first electrode output end and second electrode output end
Polarity switched devices, first electrode terminals pass through the wired electrical connection second electrode terminals of voltmeter and directly wired electrical connection
First electrode input terminal, second electrode terminals pass through the wired electrical connection second electrode input terminal of ammeter, circuit switching device
Can the DC power polarity being electrically connected with first electrode terminals be conducted to first electrode output end automatically or second electrode is defeated
Outlet and automatically by the DC power polarity being electrically connected with second electrode terminals be conducted to second electrode output end or first electricity
Pole output end then makes the polarity of first electrode output end and the polarity of second electrode output end opposite always.
2. the bipolar automatic detection device of D.C. resistance according to claim 1, it is characterized in that：DC power polarity switching dress
It sets and switches relay and second circuit synchronism switching relay including the first circuit synchronization；First circuit synchronization switches relay packet
Include the first circuit switching electromagnetic mechanism and second circuit switching electromagnetic mechanism that circuit switching is carried out by electromagnetic force, the first electricity
Road switches electromagnetic mechanism and second circuit switching electromagnetic mechanism is respectively arranged with the first incoming junction and is correspondingly arranged on respectively
First output connection, the second output connection, the first circuit switch electromagnetic mechanism and second circuit switching electromagnetic mechanism respectively
The first incoming junction respectively to should be used as first electrode input terminal and second electrode input terminal, the first circuit switches electromagnetic motor
Structure and second circuit switching electromagnetic mechanism are both provided with the first conductive armature acted by electromagnetic force, the first conductive armature
One end movable contact is simultaneously electrically connected the first incoming junction, the first conductive armature other end by by electromagnetic force with opposite the
The movable mode of one incoming junction contacts and is electrically connected the first output connection or contact and is electrically connected the second output connection,
The first conductive armature other end synchronous in linkage each other can contact its respective first output connection or the second output connection；
Second circuit synchronism switching relay includes carrying out the tertiary circuit of circuit switching by electromagnetic force to switch electromagnetic mechanism and the
Four circuits switch electromagnetic mechanism, and it is defeated that tertiary circuit switching electromagnetic mechanism and the 4th circuit switching electromagnetic mechanism are respectively arranged with second
Enter tie point and third incoming junction and be each provided with third output connection, tertiary circuit switches electromagnetic mechanism and the 4th
The respective third output connection of circuit switching electromagnetic mechanism is exported to should be used as first electrode output end and second electrode respectively
End, tertiary circuit switching electromagnetic mechanism and the 4th circuit switching electromagnetic mechanism are both provided with second acted by electromagnetic force
Conductive armature, second conductive armature one end movable contact are simultaneously electrically connected third output connection, and the second conductive armature other end is logical
It crosses and is contacted in such a way that opposite third output connection is movable by electromagnetic force and be electrically connected the second incoming junction or contact
And it is electrically connected third incoming junction, the second conductive armature other end can its respective second input of synchronous contact in linkage each other
Tie point or third incoming junction；First circuit switches the wired electrical connection tertiary circuit of the first output connection of electromagnetic mechanism
Switch the third incoming junction of electromagnetic mechanism, second circuit switches the wired electrical connection of the first output connection the of electromagnetic mechanism
Four circuits switch the third incoming junction of electromagnetic mechanism, and the first circuit switches the wired electricity of the second output connection of electromagnetic mechanism
The second incoming junction of the 4th circuit switching electromagnetic mechanism is connected, second circuit switches the second output connection of electromagnetic mechanism
Second incoming junction of wired electrical connection tertiary circuit switching electromagnetic mechanism.
3. the bipolar automatic detection device of D.C. resistance according to claim 1, it is characterized in that：DC power polarity switching dress
It only includes second circuit synchronism switching relay to set, and second circuit synchronism switching relay includes carrying out circuit by electromagnetic force
The tertiary circuit switching electromagnetic mechanism of switching and the 4th circuit switch electromagnetic mechanism, and tertiary circuit switches electromagnetic mechanism and the 4th electricity
Road switching electromagnetic mechanism, which is respectively arranged with the second incoming junction and third incoming junction and is each provided with third output, to be connected
Contact, tertiary circuit switch the third input connection of the second incoming junction and the 4th circuit switching electromagnetic mechanism of electromagnetic mechanism
Point is electrically connected to each other and is electrically connected jointly as second electrode output end, and tertiary circuit switches the third input connection of electromagnetic mechanism
Second incoming junction of point and the 4th circuit switching electromagnetic mechanism is electrically connected to each other and is electrically connected jointly defeated as first electrode
Outlet, tertiary circuit switching electromagnetic mechanism and the 4th circuit switching electromagnetic mechanism be both provided with by electromagnetic force and act the
Two conductive armatures, second conductive armature one end movable contact are simultaneously electrically connected third output connection, the second conductive armature other end
By being contacted and being electrically connected the second incoming junction in such a way that opposite third output connection is movable by electromagnetic force or connect
Touch and be electrically connected third incoming junction, the second conductive armature other end can its be respective second defeated for synchronous contact in linkage each other
Enter tie point or third incoming junction.
4. the bipolar automatic detection device of D.C. resistance according to claim 1, it is characterized in that：DC power polarity switching dress
It sets including the first metal-oxide-semiconductor switching circuit and the second metal-oxide-semiconductor switching circuit, the first metal-oxide-semiconductor switching circuit includes the first metal-oxide-semiconductor and the
Two metal-oxide-semiconductors, the second metal-oxide-semiconductor switching circuit include third metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, drain electrode and the third metal-oxide-semiconductor of the first metal-oxide-semiconductor
Drain electrode be electrically connected to each other and be electrically connected jointly as first electrode input terminal, the leakage of the source electrode of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor
Pole is electrically connected to each other and is electrically connected jointly as second electrode output end, the source electrode phase of the source electrode of the second metal-oxide-semiconductor and the 4th metal-oxide-semiconductor
It is mutually electrically connected and common electrical connection is used as second electrode input terminal, the source electrode of third metal-oxide-semiconductor and the drain electrode of the 4th metal-oxide-semiconductor are mutually electric
Connection and jointly electrical connection are used as first electrode output end.
5. the bipolar automatic detection device of D.C. resistance according to claim 1, it is characterized in that：DC power polarity switching dress
It sets including the first NPN type triode switching circuit and the second NPN type triode switching circuit, the first NPN type triode switching electricity
Road includes the first NPN type triode and the second NPN type triode, and the second NPN type triode switching circuit includes third NPN type three
Pole pipe and the 4th NPN type triode, the collector of the first NPN triode and the collector of third transistor are electrically connected to each other and are total to
It is used as first electrode input terminal, the collector phase of the emitter of the first NPN type triode and the second NPN type triode with electrical connection
It is mutually electrically connected and common electrical connection is used as second electrode output end, three pole of emitter and the 4th NPN type of the second NPN type triode
The emitter of pipe is electrically connected to each other and is electrically connected jointly as second electrode input terminal, the emitter of third NPN type triode with
The collector of 4th triode is electrically connected to each other and is electrically connected jointly as first electrode output end.
6. the bipolar automatic detection device of D.C. resistance according to claim 1, it is characterized in that：DC power polarity switching dress
It sets including the first PNP type triode switching circuit and the second PNP type triode switching circuit, the first PNP type triode switching electricity
Road includes the first PNP type triode and the second PNP type triode, and the second PNP type triode switching circuit includes third positive-negative-positive three
Pole pipe and the 4th PNP type triode, the emitter of the first PNP triode and the emitter of third transistor are electrically connected to each other and are total to
It is used as first electrode input terminal, the emitter phase of the collector of the first PNP type triode and the second PNP type triode with electrical connection
It is mutually electrically connected and common electrical connection is used as second electrode output end, three pole of collector and the 4th positive-negative-positive of the second PNP type triode
The collector of pipe is electrically connected to each other and is electrically connected jointly as second electrode input terminal, the collector of third PNP type triode with
The emitter of 4th triode is electrically connected to each other and is electrically connected jointly as first electrode output end.
7. a kind of application of the bipolar automatic detection device of D.C. resistance as described in any one of claim 1 to 6, feature
It is：It is applied to carry out Insulation test, direct-current bridge test, power ground test or Power supply mixed electricity test to electrical equipment.
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| KR101447665B1 (en) * | 2013-07-02 | 2014-10-08 | (주)갑진 | Power converter having polarity |
| CN106814254A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | Train and its insulation monitoring and warning device and method |
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2018
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| CN201293813Y (en) * | 2008-09-27 | 2009-08-19 | 比亚迪股份有限公司 | Apparatus for testing electromagnetical jamming immunity |
| KR101447665B1 (en) * | 2013-07-02 | 2014-10-08 | (주)갑진 | Power converter having polarity |
| CN106814254A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | Train and its insulation monitoring and warning device and method |
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