CN203275585U - Power frequency discharge voltage test circuit of overvoltage protector - Google Patents
Power frequency discharge voltage test circuit of overvoltage protector Download PDFInfo
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- CN203275585U CN203275585U CN 201320367942 CN201320367942U CN203275585U CN 203275585 U CN203275585 U CN 203275585U CN 201320367942 CN201320367942 CN 201320367942 CN 201320367942 U CN201320367942 U CN 201320367942U CN 203275585 U CN203275585 U CN 203275585U
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Abstract
The utility model discloses a power frequency discharge voltage test circuit of an overvoltage protector. A 220 VAC (Volts Alternating Current) power supply is connected with a double-pole-double-throw switch T; a capacitor C and a contact switch QA are connected with each other in series and are connected to the two ends of the double-pole-double-throw switch T in parallel; a switch C3 is in parallel connected to the two ends of the contact switch QA; one end of the double-pole-double-throw switch is connected with a capacitor C1, and the other end of the double-pole-double-throw switch is connected with a capacitor C2; the capacitor C1 is in series connected with a current relay LJ; the current relay LJ and the capacitor C2 are connected with a first connecting end and a second connecting end of a voltage regulator ZT respectively; a regulating end of the voltage regulator ZT is connected with a current meter A1 and a voltage meter V1 respectively; the other end of the current meter A1 and the other end of the voltage meter V1 are respectively connected with a primary side of a transformer ST; one end of a secondary side of the transformer ST is connected with a resistor R, and the other end of the secondary side of the transformer ST is connected with a current meter A2; a voltage meter V2 is in parallel connected with the current meter A2; the other end of the resistor R and the other end of the current meter A2 are respectively provided with two test ends. According to the power frequency discharge voltage test circuit of the overvoltage protector disclosed by the utility model, the current meters are in series connected into a low-voltage measuring loop; obvious up and down fluctuations in the reading of the current meters can be used for judging the gap discharge of the overvoltage protector, and the method is a simple and effective.
Description
Technical field
The utility model relates to the overvoltage protection device technical field, relates in particular to a kind of overvoltage protection device power-frequency sparkover voltage test circuit.
Background technology
Reometer on the control box of conventional test device is all pointer-type, and the electric current that produces at this moment when the overvoltage protection device spark-over of gap is a milliampere level, is not enough to the drive current list index and rotates.If wait until even current relay action tripping operation of the beat of pointer, this moment, voltage was far away higher than the power-frequency sparkover voltage in gap, and the conventional test device changes with Table A 2 or with receiver noise etc. as basis for estimation, have potential safety hazard and the inaccurate shortcoming of judgement.
The utility model content
The utility model purpose is exactly in order to make up the defective of prior art, a kind of overvoltage protection device power-frequency sparkover voltage test circuit to be provided.
The utility model is achieved through the following technical solutions:
a kind of overvoltage protection device power-frequency sparkover voltage test circuit, the 220VAC power supply is connected with double-point double-throw switch T, capacitor C and contact switch QA series connection and be connected in parallel on the two ends of double-point double-throw switch T, the two ends of contact switch QA are parallel with switch C3, double-point double-throw switch one end connects capacitor C 1, the other end connects capacitor C 2, capacitor C 1 is connected with current relay LJ, current relay LJ is connected the first link and the second link that connects respectively pressure regulator ZT with capacitor C, the adjustable side of pressure regulator ZT connects respectively reometer A1 and voltage table V1, the other end of the other end of reometer A1 and voltage table V1 is the primary side of connection transformer ST respectively, the secondary side one terminating resistor R of transformer ST, another termination reometer A2, voltage table V2 is in parallel with reometer A2, the other end of resistance R and reometer A2 is respectively two test leads.
The utility model has the advantages that: the utility model is connected on reometer in low pressure measurement returns, and fluctuation up and down occurs significantly according to the reading of reometer and judges that the overvoltage protection device gap discharge is a kind of easy and effective way, and practicality is good.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
as shown in Figure 1, a kind of overvoltage protection device power-frequency sparkover voltage test circuit, the 220VAC power supply is connected with double-point double-throw switch T, capacitor C and contact switch QA series connection and be connected in parallel on the two ends of double-point double-throw switch T, the two ends of contact switch QA are parallel with switch C3, double-point double-throw switch one end connects capacitor C 1, the other end connects capacitor C 2, capacitor C 1 is connected with current relay LJ, current relay LJ is connected the first link and the second link that connects respectively pressure regulator ZT with capacitor C, the adjustable side of pressure regulator ZT connects respectively reometer A1 and voltage table V1, the other end of the other end of reometer A1 and voltage table V1 is the primary side of connection transformer ST respectively, the secondary side one terminating resistor R of transformer ST, another termination reometer A2, voltage table V2 is in parallel with reometer A2, the other end of resistance R and reometer A2 is respectively two test leads.
Overvoltage protection device is comprised of A, B, C, 4 elements of D, and each element is comprised of discharging gap and zinc oxide valve plate.Overvoltage protection device relatively power-frequency sparkover voltage test philosophy wiring is seen Fig. 1, and alternate power-frequency sparkover voltage test connection only needs the D wiring is disconnected, and p-wire is connected on alternate getting final product.Press schematic diagram correlate meter and equipment connection is good.Industrial frequency experiment voltage be added in respectively the A of product to be tested and D, B and D, C and D, A and C, B and C, and A and B on; slowly heighten the output voltage of testing transformer, when the overvoltage protection device gap discharge, read magnitude of voltage and get final product; revision test 3 times is averaged.
Reometer A1 is connected in the low pressure measurement loop.Reometer A1 gear is placed on 20 A shelves; switch on power; slowly heighten the output voltage of testing transformer; numerical value meeting this moment rising; when the displayed value of reometer produces obviously because being subject to the rush of current of spike in a narrow margin of moment, during repeatedly fluctuation up and down; show gap success disruptive discharge, the reading of voltage table V1 is the power-frequency sparkover voltage value in overvoltage protection device gap at this moment.Fluctuation also occurs as voltage table V1 and be as the criterion with voltage table V2, and numerical value is converted the high-pressure side.
Claims (1)
1. overvoltage protection device power-frequency sparkover voltage test circuit, it is characterized in that: the 220VAC power supply is connected with double-point double-throw switch T, capacitor C and contact switch QA series connection and be connected in parallel on the two ends of double-point double-throw switch T, the two ends of contact switch QA are parallel with switch C3, double-point double-throw switch one end connects capacitor C 1, the other end connects capacitor C 2, capacitor C 1 is connected with current relay LJ, current relay LJ is connected the first link and the second link that connects respectively pressure regulator ZT with capacitor C, the adjustable side of pressure regulator ZT connects respectively reometer A1 and voltage table V1, the other end of the other end of reometer A1 and voltage table V1 is the primary side of connection transformer ST respectively, the secondary side one terminating resistor R of transformer ST, another termination reometer A2, voltage table V2 is in parallel with reometer A2, the other end of resistance R and reometer A2 is respectively two test leads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320367942 CN203275585U (en) | 2013-06-25 | 2013-06-25 | Power frequency discharge voltage test circuit of overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320367942 CN203275585U (en) | 2013-06-25 | 2013-06-25 | Power frequency discharge voltage test circuit of overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275585U true CN203275585U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320367942 Expired - Fee Related CN203275585U (en) | 2013-06-25 | 2013-06-25 | Power frequency discharge voltage test circuit of overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275585U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592552A (en) * | 2013-11-29 | 2014-02-19 | 郑州百赛文计算机技术有限公司 | Instrument and method for testing characteristics of overvoltage protection device |
| CN112903548A (en) * | 2019-12-04 | 2021-06-04 | 西门子股份公司 | Identification of smoke events and electron beam melting apparatus |
-
2013
- 2013-06-25 CN CN 201320367942 patent/CN203275585U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592552A (en) * | 2013-11-29 | 2014-02-19 | 郑州百赛文计算机技术有限公司 | Instrument and method for testing characteristics of overvoltage protection device |
| CN103592552B (en) * | 2013-11-29 | 2017-03-29 | 郑州百赛文计算机技术有限公司 | A kind of overvoltage protection device characteristic tester and method of testing |
| CN112903548A (en) * | 2019-12-04 | 2021-06-04 | 西门子股份公司 | Identification of smoke events and electron beam melting apparatus |
| US20210170518A1 (en) * | 2019-12-04 | 2021-06-10 | Siemens Aktiengesellschaft | Identifying Smoke Events And Electron Beam Melting Installation |
| US11642740B2 (en) * | 2019-12-04 | 2023-05-09 | Siemens Aktiengesellschaft | Identifying smoke events and electron beam melting installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20170625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |