CN203561711U - Online monitoring device for overvoltage protection device - Google Patents
Online monitoring device for overvoltage protection device Download PDFInfo
- Publication number
- CN203561711U CN203561711U CN201320780840.5U CN201320780840U CN203561711U CN 203561711 U CN203561711 U CN 203561711U CN 201320780840 U CN201320780840 U CN 201320780840U CN 203561711 U CN203561711 U CN 203561711U
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- China
- Prior art keywords
- monitoring device
- overvoltage protection
- online monitoring
- line monitor
- protection device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an Online monitoring device for an overvoltage protection device. The online monitoring device comprises an overvoltage protector, and is characterized in that the overvoltage protector includes four protection columns, wherein a first protection column, a second protection column and a third protection column are connected with a power grid respectively, and a fourth protection column is connected with an online monitoring device; and the monitoring device is connected with the power grid ground. The online monitoring device determines the states of the overvoltage protector by monitoring the magnitude of the resistive component of the leak current of a lightening arrester. When the resistive component of the leak current of the overvoltage protector exceeds a set threshold of an internal resistance sheet, a highlight light-emitting diode flickers, and after a time delay of about 0.5 hour, a contact of a relay springs out to drop an indicator card, so that an inspector can discover the work state of the lightening arrester conveniently. According to the online monitoring device, a built-in direct-current 1mA voltage 200V voltage-dependent resistor is connected in series with the voltage protector, and protection measures have been taken to prevent overvoltage and interference signals.
Description
Technical field
The utility model relates to a kind of overvoltage protection device on-Line Monitor Device.
Background technology
Overvoltage protection device is in electrical network, to protect power equipment to avoid the important electrical of overvoltage injury, and its reliability of operation will directly affect the safety of electric system.But distribution network system distribution is wide, MOA use amount is large, and its overcoat generally adopts synthetic insulating material, is difficult to from finding in appearance after overvoltage protection device short circuit, and difficulty is searched in trouble spot.China's electric system detects and adopts preventive trial mode power distribution network over-voltage protector, generally, take 2 years as the cycle, overvoltage protection device is pulled down and is tested.Due to distribution overvoltage protection device One's name is legion; each detection need to consume a large amount of human and material resources, also will have a power failure; can not get rid of the possibility that between twice preventive trial, overvoltage protection device damages simultaneously; therefore much moving department will be revised as 3～5 years the test period; even cancelled preventive trial, until overvoltage protection device aging or make moist have an accident after just change.
Utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: a kind of on-Line Monitor Device that can effectively monitor overvoltage protection device state is provided.
Overvoltage protection device on-Line Monitor Device provided by the utility model; comprise overvoltage protection device; it is characterized in that; described overvoltage protection device comprises guard column; described guard column is 4; the first guard column, the second guard column and the 3rd guard column are connected respectively electrical network, and the 4th guard column connects on-Line Monitor Device, and on-Line Monitor Device connects electrical network the earth.
Described on-Line Monitor Device inside is provided with resistor disc, resistor disc connects respectively little electric current counting circuit and large electric current counting circuit, large electric current counting circuit connects LED lamp, LED lamp exposes on-Line Monitor Device, and large electric current counting circuit connects relay by delay circuit, direction board is close in the contact of relay, and direction board is attached on the outer wall of on-Line Monitor Device.
The beneficial effect that the utility model has is: the quality that judges overvoltage protection device by the size of the resistive component of monitoring leakage current of an arrester.When the resistive component of overvoltage protection device leakage current exceedes the threshold value of its internal resistance sheet setting; the flicker of high-brightness luminous diode; through the time delay of about 0.5 hour, the contact of relay was ejected direction board is dropped out, so that tour personnel find the duty of this lightning arrester in time.This installs built-in direct current 1mA voltage 200V voltage dependent resistor (VDR) and connects with overvoltage protection device; Superpotential and undesired signal have been taked to safeguard procedures; Can reuse.
Accompanying drawing explanation
Fig. 1 is the utility model frame principle figure;
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Overvoltage protection device on-Line Monitor Device as shown in Figure 1; comprise overvoltage protection device; it is characterized in that; described overvoltage protection device comprises guard column; described guard column is 4; the first guard column, the second guard column and the 3rd guard column are connected respectively electrical network, and the 4th guard column connects on-Line Monitor Device, and on-Line Monitor Device connects electrical network the earth.
Described on-Line Monitor Device inside is provided with resistor disc, resistor disc connects respectively little electric current counting circuit and large electric current counting circuit, large electric current counting circuit connects LED lamp, LED lamp exposes on-Line Monitor Device, and large electric current counting circuit connects relay by delay circuit, direction board is close in the contact of relay, and direction board is attached on the outer wall of on-Line Monitor Device.
By the size of the resistive component of monitoring leakage current of an arrester, judge the quality of overvoltage protection device.When the resistive component of overvoltage protection device leakage current exceedes the threshold value of its internal resistance sheet setting; the flicker of high-brightness luminous diode; through the time delay of about 0.5 hour, the contact of relay was ejected direction board is dropped out, so that tour personnel find the duty of this lightning arrester in time.This installs built-in direct current 1mA voltage 200V voltage dependent resistor (VDR) and connects with overvoltage protection device; Superpotential and undesired signal have been taked to safeguard procedures; Can reuse.
Claims (2)
1. an overvoltage protection device on-Line Monitor Device; comprise overvoltage protection device; it is characterized in that; described overvoltage protection device comprises guard column; described guard column is 4; the first guard column, the second guard column and the 3rd guard column are connected respectively electrical network, and the 4th guard column connects on-Line Monitor Device, and on-Line Monitor Device connects electrical network the earth.
2. overvoltage protection device on-Line Monitor Device according to claim 1; it is characterized in that; described on-Line Monitor Device inside is provided with resistor disc; resistor disc connects respectively little electric current counting circuit and large electric current counting circuit; large electric current counting circuit connects LED lamp, and LED lamp exposes on-Line Monitor Device, and large electric current counting circuit connects relay by delay circuit; direction board is close in the contact of relay, and direction board is attached on the outer wall of on-Line Monitor Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320780840.5U CN203561711U (en) | 2013-12-02 | 2013-12-02 | Online monitoring device for overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320780840.5U CN203561711U (en) | 2013-12-02 | 2013-12-02 | Online monitoring device for overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561711U true CN203561711U (en) | 2014-04-23 |
Family
ID=50511425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320780840.5U Expired - Fee Related CN203561711U (en) | 2013-12-02 | 2013-12-02 | Online monitoring device for overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561711U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880603A (en) * | 2015-06-01 | 2015-09-02 | 安徽禄讯电子科技有限公司 | Overvoltage absorption and intelligent counting apparatus |
| CN106771890A (en) * | 2015-11-24 | 2017-05-31 | 合肥亚飞电力设备有限公司 | A kind of automatic testing equipment of three-phase overvoltage protection device |
-
2013
- 2013-12-02 CN CN201320780840.5U patent/CN203561711U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880603A (en) * | 2015-06-01 | 2015-09-02 | 安徽禄讯电子科技有限公司 | Overvoltage absorption and intelligent counting apparatus |
| CN106771890A (en) * | 2015-11-24 | 2017-05-31 | 合肥亚飞电力设备有限公司 | A kind of automatic testing equipment of three-phase overvoltage protection device |
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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: 20140423 Termination date: 20151202 |
|
| EXPY | Termination of patent right or utility model |