CN201886065U - Power frequency discharge voltage testing device of zinc oxide arrester - Google Patents
Power frequency discharge voltage testing device of zinc oxide arrester Download PDFInfo
- Publication number
- CN201886065U CN201886065U CN2010206774944U CN201020677494U CN201886065U CN 201886065 U CN201886065 U CN 201886065U CN 2010206774944 U CN2010206774944 U CN 2010206774944U CN 201020677494 U CN201020677494 U CN 201020677494U CN 201886065 U CN201886065 U CN 201886065U
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- Prior art keywords
- oxide arrester
- zinc oxide
- zinc
- voltage
- power frequency
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- Expired - Lifetime
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Abstract
The utility model discloses a power frequency discharge voltage testing device of a zinc oxide arrester, which comprises the zinc oxide arrester. Transformer secondary sides are connected with two ends of the zinc oxide arrester; voltmeters are connected with the two ends of the zinc oxide arrester in parallel; a transformer primary side, an ammeter and a voltage regulating device are connected in series; and the ammeter, the voltmeters and the voltage regulating device are installed inside an operation box. The device is based on power frequency discharge test mechanism, and can effectively judge the gap discharge time only by observing the variation of current figures on the operation box, thereby accurately measuring power frequency discharge voltage. The measuring method is simple and effective, the test result has high reliability, no special equipment is required to be added, and the device is particularly applicable to working places.
Description
Technical field
The worker that the utility model relates to a kind of electric testing equipment, particularly a kind of Zinc-Oxide Arrester is put proving installation.
Background technology
Power-frequency sparkover voltage is one of important parameter of reflection band gap Zinc-Oxide Arrester quality, in industry spot, adopts the power-frequency sparkover voltage of the conventional method measurement band gap Zinc-Oxide Arrester of valve arrester test usually, and this will cause measurement result higher.Existing lightning arrester dedicated tester can accurately measure the lightning-arrest power-frequency sparkover voltage of band gap zinc paste easily, but dedicated tester costs an arm and a leg, and up to tens0000 yuan, the industry spot frequency of utilization is not high, and general unit is unspecial to be equipped with.
In addition, the power-frequency sparkover voltage method of testing of gap Zinc-Oxide Arrester also has measuring methods such as oscilloscope method, radio method, test product low-pressure side series connection table meter method, and all comparatively complexity or effect are not ideal enough.
Summary of the invention
The worker that the purpose of this utility model provides a kind of Zinc-Oxide Arrester is put proving installation, solves the problem that the power-frequency sparkover voltage test is inconvenient, the instrumentation cost is high of prior art intermediate gap Zinc-Oxide Arrester.Start with from power-frequency discharge test mechanism,, can effectively differentiate gap discharge constantly, thereby measure power-frequency sparkover voltage exactly only by observing the variation of current digital on the control box.
For solving the problems of the technologies described above, the purpose of this utility model is achieved in that a kind of worker of Zinc-Oxide Arrester puts proving installation, comprise Zinc-Oxide Arrester, the Zinc-Oxide Arrester two ends connect Circuit Fault on Secondary Transformer, the Zinc-Oxide Arrester two ends are parallel with voltage table, transformer primary side, reometer and regulator series connection.
Reometer, voltage table and regulator are installed in control box inside.
The no-load voltage ratio of transformer is 50/0.2kV.
The worker of the utility model Zinc-Oxide Arrester is put proving installation and is started with from power-frequency discharge test mechanism, only by observing the variation of current digital on the control box, can effectively differentiate gap discharge constantly, thereby measure power-frequency sparkover voltage exactly.
This measuring method is simple and effective, and test findings has higher confidence level, need not to acquire specialized equipment, is specially adapted to the scene.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the utility model structure drawing of device.
Embodiment
A kind of worker of Zinc-Oxide Arrester is put proving installation, comprise Zinc-Oxide Arrester MOA, Zinc-Oxide Arrester MOA two ends connect transformer ST secondary side, and Zinc-Oxide Arrester MOA two ends are parallel with voltage table V, transformer ST primary side, reometer A and regulator U series connection.
Reometer A, voltage table V and regulator U are installed in control box 1 inside.
The no-load voltage ratio of transformer ST is 50/0.2kV.
As shown in Figure 1, wherein the reometer A on the control box 1 shows current data, the voltage table V display voltage on the control box 1, and its numerical value is taken from the measurement coil of transformer ST, and the no-load voltage ratio of transformer ST is 50/0.2kV.Regulator U adopts slip transformer dividing potential drop or stabilized voltage supply pressure regulation.
By the regulator U transformer ST primary side voltage that slowly and equably raises, reometer A current value has just begun to change and is little; When voltage is elevated to a certain degree, reometer A electric current increases suddenly or change fast within the specific limits, can hear faint " whistling " discharging sound simultaneously, and the reading of record voltage table V this moment is the power-frequency sparkover voltage value.
Principle of work:
Band gap Zinc-Oxide Arrester MOA is carried out the power-frequency discharge test, when the trial voltage peak value reaches the sparking voltage in gap, the gap is disruptive discharge immediately, in the test loop, produce the faint electric current of spike in a narrow margin, non-linear this pulse current that causes of the height of Zinc-Oxide Arrester MOA resistor disc is very faint, can not keep and extinguish, but applied voltage being again greater than sparking voltage, discharges once more in the gap.Thereby formed the intermittent pulsed discharge process of " discharge → blow-out → discharge → blow-out ".Transformer ST has the signal amplification, and reometer A selects for use suitable table meter can capture this discharge process.Therefore, new measuring method can accurately be measured the power-frequency sparkover voltage of band gap Zinc-Oxide Arrester.
Exist the sparking voltage of intermittent discharge process to be generally an interval, the magnitude of voltage when it down is limited to the gap and discharges first, on magnitude of voltage when being limited to intermittent discharge and finishing to transfer steady-state discharge to, the sparking voltage that test measures is just in this interval range.
Claims (3)
1. the worker of a Zinc-Oxide Arrester is put proving installation, comprise Zinc-Oxide Arrester (MOA), it is characterized in that: Zinc-Oxide Arrester (MOA) two ends connect transformer (ST) secondary side, Zinc-Oxide Arrester (MOA) two ends are parallel with voltage table (V), transformer (ST) primary side, reometer (A) and regulator (U) series connection.
2. put proving installation according to the worker of the described a kind of Zinc-Oxide Arrester of claim 1, it is characterized in that: reometer (A), voltage table (V) and regulator (U) are installed in control box (1) inside.
3. put proving installation according to the worker of the described a kind of Zinc-Oxide Arrester of claim 1, it is characterized in that: the no-load voltage ratio of transformer (ST) is 50/0.2kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206774944U CN201886065U (en) | 2010-12-24 | 2010-12-24 | Power frequency discharge voltage testing device of zinc oxide arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206774944U CN201886065U (en) | 2010-12-24 | 2010-12-24 | Power frequency discharge voltage testing device of zinc oxide arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201886065U true CN201886065U (en) | 2011-06-29 |
Family
ID=44183612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206774944U Expired - Lifetime CN201886065U (en) | 2010-12-24 | 2010-12-24 | Power frequency discharge voltage testing device of zinc oxide arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201886065U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095955A (en) * | 2010-12-24 | 2011-06-15 | 中国长江三峡集团公司 | Device and method for testing industrial-frequency discharge of zinc oxide lightning arrester |
| CN103364606A (en) * | 2012-03-27 | 2013-10-23 | 赛锐(青岛)自动化技术有限公司 | System capable of accurately measuring voltage and current simultaneously and instrument adopting same |
| CN112415261A (en) * | 2020-11-12 | 2021-02-26 | 广东电网有限责任公司湛江供电局 | Online monitoring system and method for line arrester |
-
2010
- 2010-12-24 CN CN2010206774944U patent/CN201886065U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095955A (en) * | 2010-12-24 | 2011-06-15 | 中国长江三峡集团公司 | Device and method for testing industrial-frequency discharge of zinc oxide lightning arrester |
| CN103364606A (en) * | 2012-03-27 | 2013-10-23 | 赛锐(青岛)自动化技术有限公司 | System capable of accurately measuring voltage and current simultaneously and instrument adopting same |
| CN112415261A (en) * | 2020-11-12 | 2021-02-26 | 广东电网有限责任公司湛江供电局 | Online monitoring system and method for line arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |