CN205749654U - 35 kilovolts of contact high voltage testing devices with over-voltage protection function - Google Patents
35 kilovolts of contact high voltage testing devices with over-voltage protection function Download PDFInfo
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- CN205749654U CN205749654U CN201620419476.3U CN201620419476U CN205749654U CN 205749654 U CN205749654 U CN 205749654U CN 201620419476 U CN201620419476 U CN 201620419476U CN 205749654 U CN205749654 U CN 205749654U
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Abstract
The utility model discloses a kind of 35 kilovolts of contact high voltage testing devices with over-voltage protection function, solve the problem that the 35kV high voltage electroscope of existing routine carries out there is potential safety hazard during electrical verification.It is included in the secondary terminals of voltage transformer (2) connection and has relay normally open contact (4), the other end of relay normally open contact (4) connects high-potting electrical equipment (3), the other end ground connection of high-potting electrical equipment (3), one end ground connection of the control coil (5) of relay normally open contact (4), the other end of the control coil (5) of relay normally open contact (4) is connected with the outfan of voltage comparator (6), the comparison input of voltage comparator (6) connects and has 100 volts of DC sources (8), another of voltage comparator (6) compares to connect on input the outfan of A/D converter (7), the input of A/D converter (7) is connected with the secondary terminals of voltage transformer (2).Ensure that the safety of operator.
Description
Technical field
This utility model relates to the high voltage electroscope used on a kind of ultra-high-tension power transmission line, particularly to the contact high voltage electroscope used on a kind of 35 KV transmission lines.
Background technology
Power system, when high-tension line and high voltage electric equipment thereof are carried out inspection operation, typically checks electrical equipment the most charged with high voltage electroscope.At present, there are various different principle, different types of 35kV high voltage electroscope.During execute-in-place, it is that it is directly connected with the voltage transformer secondary end on bus, sometimes due to the transmission line of electricity of bus there will be and higher transmission line of electricity overlap joint accident, cause busbar voltage drastically to raise, at this moment carry out electrical verification with conventional 35kV high voltage electroscope and can damage the life security of electroscope also entail dangers to operator.
Summary of the invention
This utility model provides a kind of 35 kilovolts of contact high voltage testing devices with over-voltage protection function, and the 35kV high voltage electroscope solving existing routine carries out existing during electrical verification the technical problem of potential safety hazard.
This utility model is to solve above technical problem by the following technical programs:
nullA kind of 35 kilovolts of contact high voltage testing devices with over-voltage protection function，Including bus (1)、Voltage comparator (6) and relay，The control coil (5) of relay normally open contact (4) and relay normally open contact (4) it is provided with in relay，Bus (1) is provided with voltage transformer (2)，The secondary terminals of voltage transformer (2) connects and has relay normally open contact (4)，The other end of relay normally open contact (4) connects high-potting electrical equipment (3)，The other end ground connection of high-potting electrical equipment (3)，One end ground connection of the control coil (5) of relay normally open contact (4)，The other end of the control coil (5) of relay normally open contact (4) links together with the outfan of voltage comparator (6)，The comparison input of voltage comparator (6) connects and has 100 volts of DC sources (8)，Another of voltage comparator (6) compares to connect on input the outfan of A/D converter (7)，The input of A/D converter (7) links together with the secondary terminals of voltage transformer (2).
This utility model has stopped potential safety hazard when 35kV high voltage electroscope carries out electrical verification, it is ensured that the safety of operator.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in detail:
nullA kind of 35 kilovolts of contact high voltage testing devices with over-voltage protection function，Including bus (1)、Voltage comparator (6) and relay，The control coil (5) of relay normally open contact (4) and relay normally open contact (4) it is provided with in relay，Bus (1) is provided with voltage transformer (2)，The secondary terminals of voltage transformer (2) connects and has relay normally open contact (4)，The other end of relay normally open contact (4) connects high-potting electrical equipment (3)，The other end ground connection of high-potting electrical equipment (3)，One end ground connection of the control coil (5) of relay normally open contact (4)，The other end of the control coil (5) of relay normally open contact (4) links together with the outfan of voltage comparator (6)，The comparison input of voltage comparator (6) connects and has 100 volts of DC sources (8)，Another of voltage comparator (6) compares to connect on input the outfan of A/D converter (7)，The input of A/D converter (7) links together with the secondary terminals of voltage transformer (2).
The primary side of voltage transformer 2 gathers the voltage signal that metal osculating element passes over, relay normally open contact (4) is connected with the secondary side of transformer, voltage signal is converted to digital signal by A/D converter (7) by voltage transformer secondary side, digital signal is passed to voltage comparator (6) by A/D converter (7), and an input at voltage comparator (6) accesses 100 volts of DC sources (8).If after the secondary terminals of voltage transformer (2) compares with 100 volts of DC sources (8), if it is equal, then the outfan of voltage comparator (6) gives high level, the control coil of the control coil (5) of relay normally open contact (4) obtains electric, relay normally open contact (4) closes, 35kV high voltage testing normal circuit operation；If after the secondary terminals of voltage transformer (2) compares with 100 volts of DC sources (8), if it is unequal, then the outfan of voltage comparator (6) gives low level, the control coil dead electricity of the control coil (5) of relay normally open contact (4), relay normally open contact (4) does not closes, and 35kV high voltage testing circuit will not work.
Claims (1)
- null1. 35 kilovolts of contact high voltage testing devices with over-voltage protection function，Including bus (1)、Voltage comparator (6) and relay，The control coil (5) of relay normally open contact (4) and relay normally open contact (4) it is provided with in relay，Bus (1) is provided with voltage transformer (2)，It is characterized in that，The secondary terminals of voltage transformer (2) connects and has relay normally open contact (4)，The other end of relay normally open contact (4) connects high-potting electrical equipment (3)，The other end ground connection of high-potting electrical equipment (3)，One end ground connection of the control coil (5) of relay normally open contact (4)，The other end of the control coil (5) of relay normally open contact (4) links together with the outfan of voltage comparator (6)，The comparison input of voltage comparator (6) connects and has 100 volts of DC sources (8)，Another of voltage comparator (6) compares to connect on input the outfan of A/D converter (7)，The input of A/D converter (7) links together with the secondary terminals of voltage transformer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419476.3U CN205749654U (en) | 2016-05-10 | 2016-05-10 | 35 kilovolts of contact high voltage testing devices with over-voltage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419476.3U CN205749654U (en) | 2016-05-10 | 2016-05-10 | 35 kilovolts of contact high voltage testing devices with over-voltage protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749654U true CN205749654U (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620419476.3U Active CN205749654U (en) | 2016-05-10 | 2016-05-10 | 35 kilovolts of contact high voltage testing devices with over-voltage protection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN205749654U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843763A (en) * | 2017-09-23 | 2018-03-27 | 国网山东省电力公司菏泽市定陶区供电公司 | A kind of Multifunctional electroscope |
| CN110880810A (en) * | 2019-11-15 | 2020-03-13 | 广东电网有限责任公司 | Intelligent electricity testing system applied to transformer substation |
-
2016
- 2016-05-10 CN CN201620419476.3U patent/CN205749654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843763A (en) * | 2017-09-23 | 2018-03-27 | 国网山东省电力公司菏泽市定陶区供电公司 | A kind of Multifunctional electroscope |
| CN110880810A (en) * | 2019-11-15 | 2020-03-13 | 广东电网有限责任公司 | Intelligent electricity testing system applied to transformer substation |
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| C14 | Grant of patent or utility model | ||
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