CN206960588U - A kind of on-off detector for short-circuited terminal row - Google Patents

A kind of on-off detector for short-circuited terminal row Download PDF

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Publication number
CN206960588U
CN206960588U CN201720969953.8U CN201720969953U CN206960588U CN 206960588 U CN206960588 U CN 206960588U CN 201720969953 U CN201720969953 U CN 201720969953U CN 206960588 U CN206960588 U CN 206960588U
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China
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resistance
short
test
detector
terminal row
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CN201720969953.8U
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胡洪军
何宏江
汪林
李辉
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China Yangtze Power Co Ltd
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China Yangtze Power Co Ltd
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Abstract

A kind of on-off detector for short-circuited terminal row, including dc source, ammeter, reference resistance, test resistance, experiment test pencil.The dc source, ammeter, reference resistance, test resistance connection composition series loop;Experiment test pencil is attempted by test resistance both sides.A kind of on-off detector arranged for short-circuited terminal of the utility model, by the change of ammeter registration in loop, rapidly reflect that short-circuited terminal row is internal and whether connect reliably, to reduce the loop fault rate caused by terminal block inside short circuit is bad.

Description

A kind of on-off detector for short-circuited terminal row
Technical field
A kind of on-off detector for short-circuited terminal row of the utility model, belongs to field of electrical equipment.
Background technology
The wire harness that short-circuited terminal row is widely used in shielding between interior electrical equipment and the outer circuit of screen is collecting and distributing, play signal (electric current/ Voltage) transmission with distribution effect.Short-circuited terminal, which is arranged, make it that wiring is attractive in appearance, and loop trend is clear, and fault diagnosis is convenient.It is although short The appearance of connecting terminal row provides very big convenience to wiring, but loop fault caused by terminal block self-defect is also of common occurrence, Find that failure terminal has great importance in time.Test mode of the prior art is:Hand-held universal meter measures two successively Resistance between terminal, which check that workload is big, and work repetitive rate is high, is had a great influence by human factor, and missing inspection easily occurs Situation.
The content of the invention
The purpose of this utility model is to provide a kind of on-off detector for short-circuited terminal row, passes through ammeter in loop The change of registration, rapidly reflect that short-circuited terminal row is internal and whether connect reliably, to reduce because short circuit is bad inside terminal block Caused loop fault rate.
The technical scheme that the utility model is taken is:
It is a kind of for short-circuited terminal row on-off detector, including dc source, ammeter, reference resistance, test resistance, Test test pencil.The dc source, ammeter, reference resistance, test resistance connection composition series loop;Experiment test pencil is attempted by Test resistance both sides.
The dc source, for the rechargeable battery with voltage stabilizing function, for exporting steady dc voltage.
The ammeter, from direct current digital display meter, range 0-10mA.
The reference resistance is by precision resistance Rj1, precision resistance Rj2It is composed in series.
Preferably, the reference resistance is in series by the precision resistance that two resistances are 250 Ω.
The test resistance, the N precision resistance comprising series connection, N are shorted end sub-pieces number.
Preferably, the test resistance is by precision resistance R1, precision resistance R2, precision resistance R3, precision resistance R4, it is accurate Resistance R5It is composed in series.
The experiment test pencil, for will subject terminal with parallel way access measure loop, the copper ring of p-wire end with Loop is connected by the way of crimping, and the probe of the other end can flexibly apply to the short-circuited terminal row of any spacing.
The dc source, ammeter, reference resistance, test resistance are arranged on same circuit board, wherein, test electricity Resistance and test interface are distributed evenly in the side of circuit board, and the test interface is the binding post of crimping mode.
A kind of on-off detector for short-circuited terminal row of the utility model, electricity is improved with a kind of simple circuit structure Complicated short-circuited terminal, which is listed and indexed, in the secondary work of gas looks into technique, greatly simplifies the inspection work of short-circuited terminal row, can prevent The risk for missing inspection occur is checked by hand, is effectively avoided the loop fault caused by short-circuiting bar loose contact or terminal damage, is improved Check reliability and check efficiency.
Brief description of the drawings
Fig. 1 is the utility model detector structural representation.
Fig. 2 is the utility model detector circuit theory diagrams.
Embodiment
As shown in Figure 1, 2, a kind of on-off detector for short-circuited terminal row, including dc source 1, ammeter 2, benchmark Resistance 3, test resistance 4, experiment test pencil 5.The dc source 1, ammeter 2, reference resistance 3, the connection composition string of test resistance 4 Join loop;Experiment test pencil 5 is attempted by the both sides of test resistance 4.
The dc source 1, for the rechargeable battery with voltage stabilizing function, for exporting steady dc voltage, its is defeated It is 5V to go out voltage magnitude, to meet security, reliability and the requirement of versatility.
The ammeter 2, from direct current digital display meter, range 0-10mA, to meet the requirement of safe current limit value, it is clever Sensitivity should meet the requirements, to accurately reflect the change of contact resistance between short-circuited terminal.
The reference resistance 3 is by precision resistance Rj1, precision resistance Rj2It is composed in series.
Preferably, the reference resistance 3 is in series by the precision resistance that two resistances are 250 Ω.Both single can have been prevented Ammeter is burnt after reference resistance short trouble, can also avoid using influence of other protection elements to loop resistance value.
The test resistance 4, the N precision resistance comprising series connection, N are shorted end sub-pieces number.Can be according to tested terminal block Length arbitrarily customize, with meet different operating custom maintainer needs.
Preferably, the test resistance 4 is by precision resistance R1, precision resistance R2, precision resistance R3, precision resistance R4, it is accurate Resistance R5It is composed in series.
It is described experiment test pencil 5, for will subject terminal with parallel way access measure loop, the copper ring of p-wire end with Loop is connected by the way of crimping, and the probe of the other end can flexibly apply to the short-circuited terminal row of any spacing.
Preferably, for ease of checking, experiment test pencil 5 is unsuitable excessive, to be adapted to two people operation to be advisable, therefore determines detector The detectable number of terminals of single is 6, then required experiment test pencil 5 quantity is 6, and the quantity of test resistance 4 is 5;According to choosing Fixed ammeter range and the voltage magnitude of dc source, calculated and known by Ohm's law, single test resistance 4 is preferably from resistance 100 Ω precision resistance.
The dc source 1, ammeter 2, reference resistance 3, test resistance 4 are arranged on same circuit board, wherein, survey Examination resistance 4 and test interface are distributed evenly in the side of circuit board, and the test interface is the binding post of crimping mode.
When short-circuited terminal row's conducting is good, all test resistances 4 are shorted, and only reference resistance 3 seals in measure loop, electricity Flow table 2 represents number for stable loop maximum current;When short circuit is bad inside terminal block, the test in parallel with failure terminal electricity Resistance 4 accesses measure loop by series connection, and the registration of ammeter 2 accordingly reduces, thereby increases and it is possible to hinders the change of termination contact resistance for some reason and ripple It is dynamic.Based on above-mentioned principle, the change of ammeter registration, the break-make situation that rapidly and accurately will reflect between short-circuited terminal.
The process that internal short circuit state is arranged using on-off detector detection terminal is as follows:
First experiment test pencil 5 is reliably crimped onto on binding post, keeps the other end of test pencil hanging, then opens chargeable electricity The output switch in pond, ammeter registration is observed, complete detector self-test.Now, if ammeter registration
Then detector function is normal, and self-test passes through;Otherwise, need to ascertain the reason.
Self-test can start formally to detect by rear, by test pencil respectively with the tested reliable contacts of terminal 6, observe ammeter Registration.Now, if short circuit is good inside terminal block, ammeter registration:
Otherwise, it is bad to there is short circuit inside terminal block, terminal body and short-circuiting bar need to be checked.Reduce tested number of terminals Amount, by unnecessary test pencil short circuit, above-mentioned method of testing is repeated, failure terminal can be pin-pointed to.

Claims (10)

1. a kind of on-off detector for short-circuited terminal row, including dc source (1), ammeter (2), reference resistance (3), survey Try resistance (4), experiment test pencil (5);It is characterized in that:The dc source (1), ammeter (2), reference resistance (3), test electricity Hinder (4) connection composition series loop;Experiment test pencil (5) is attempted by test resistance (4) both sides.
A kind of 2. on-off detector for short-circuited terminal row according to claim 1, it is characterised in that:The dc source (1) it is, the rechargeable battery with voltage stabilizing function, for exporting steady dc voltage.
A kind of 3. on-off detector for short-circuited terminal row according to claim 1, it is characterised in that:The ammeter (2), from direct current digital display meter, range 0-10mA.
A kind of 4. on-off detector for short-circuited terminal row according to claim 1, it is characterised in that:The reference resistance (3) by precision resistance Rj1, precision resistance Rj2It is composed in series.
5. according to a kind of on-off detector arranged for short-circuited terminal of claim 1 or 4, it is characterised in that:The benchmark Resistance (3) is in series by the precision resistance that two resistances are 250 Ω.
A kind of 6. on-off detector for short-circuited terminal row according to claim 1, it is characterised in that:The test resistance (4), the N precision resistance comprising series connection, N are shorted end sub-pieces number.
7. according to a kind of on-off detector arranged for short-circuited terminal of claim 1 or 6, it is characterised in that:The test Resistance (4) is by precision resistance R1, precision resistance R2, precision resistance R3, precision resistance R4, precision resistance R5It is composed in series.
A kind of 8. on-off detector for short-circuited terminal row according to claim 1, it is characterised in that:The experiment test pencil (5), for subject terminal to be accessed into measure loop with parallel way, the copper ring of p-wire end is with loop by the way of crimping Connection, the probe of the other end can flexibly apply to the short-circuited terminal row of any spacing.
A kind of 9. on-off detector for short-circuited terminal row according to claim 1, it is characterised in that:The dc source (1), ammeter (2), reference resistance (3), test resistance (4) are arranged on same circuit board, wherein, test resistance (4) and Test interface is distributed evenly in the side of circuit board, and the test interface is the binding post of crimping mode.
A kind of 10. on-off detector for short-circuited terminal row according to claim 1, it is characterised in that:The detector list The number of terminals of secondary detection is 6, and experiment test pencil (5) quantity is 6, and test resistance (4) quantity is 5;According to selected electricity The voltage magnitude of flow table range and dc source, calculated and known by Ohm's law, single test resistance (4) is 100 Ω from resistance Precision resistance.
CN201720969953.8U 2017-08-04 2017-08-04 A kind of on-off detector for short-circuited terminal row Active CN206960588U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720969953.8U CN206960588U (en) 2017-08-04 2017-08-04 A kind of on-off detector for short-circuited terminal row

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720969953.8U CN206960588U (en) 2017-08-04 2017-08-04 A kind of on-off detector for short-circuited terminal row

Publications (1)

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CN206960588U true CN206960588U (en) 2018-02-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110568288A (en) * 2019-09-17 2019-12-13 河海大学 Device and method for diagnosing loosening of screw of terminal strip of switch cabinet
CN111044961A (en) * 2018-10-15 2020-04-21 吴茂祥 Test machine self-checking system and test method
CN111174686A (en) * 2020-01-13 2020-05-19 广州维思车用部件有限公司 Terminal detection device and detection method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111044961A (en) * 2018-10-15 2020-04-21 吴茂祥 Test machine self-checking system and test method
CN110568288A (en) * 2019-09-17 2019-12-13 河海大学 Device and method for diagnosing loosening of screw of terminal strip of switch cabinet
CN111174686A (en) * 2020-01-13 2020-05-19 广州维思车用部件有限公司 Terminal detection device and detection method

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