CN201945639U - Power uninterrupted test box for capacitive equipment - Google Patents
Power uninterrupted test box for capacitive equipment Download PDFInfo
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- CN201945639U CN201945639U CN2010206761060U CN201020676106U CN201945639U CN 201945639 U CN201945639 U CN 201945639U CN 2010206761060 U CN2010206761060 U CN 2010206761060U CN 201020676106 U CN201020676106 U CN 201020676106U CN 201945639 U CN201945639 U CN 201945639U
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- disconnecting link
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Abstract
The utility model discloses a power uninterrupted test box for capacitive equipment. The power uninterrupted test box comprises a discharge protection circuit, a test terminal circuit and a disconnecting link earth-return circuit which are connected between a wiring terminal A and a grounding terminal B in parallel, wherein the discharge protection circuit is two gapped discharge electrodes; the test terminal circuit comprises a wiring terminal C of an end shield grounding lead of the capacitive equipment and a single-pole single-throw switch; one end of the single-pole single-throw switch is connected to the wiring terminal A and the wiring terminal C; the other end of the single-pole single-throw switch is connected to the grounding terminal B; the disconnecting link earth-return circuit comprises a double-pole double-throw disconnecting link; one end of the disconnecting link is connected to the wiring terminal A; the other end of the disconnecting link is connected with the grounding terminal B; and a conductive metal casing of the test box is connected with the grounding terminal B. By matching the power interrupted test box with a test instrument, the dielectric loss test and the electric capacity test can be carried out on the capacitive equipment without power failure; and the work efficiency of projects requiring power failure is high.
Description
Technical field
The utility model relates to a kind of capacitive apparatus testing cassete.
Background technology
At present, capacitive apparatus end screen adopts directly grounded mode, measuring current transformer dielectric loss or test end with positive connection dismisses edge and all needs the staff to climb up the ladder ground lead is shielded at the end to open, this is three drawbacks under cover wherein: at first, the end screen ground lead of this earthing mode can only can be opened under the equipment power-off condition, do not possess the uninterrupted power test condition, bring very big inconvenience for the collecting device status information; Secondly, ground lead is shielded at the frequent end that disconnects, and causes the imperfect earth of end screen or end screen box to make moist easily, influences the normal operation of equipment; Once more, disconnecting end screen ground lead needs repeatedly ladder up and down of staff, wastes time and energy, and also has potential safety hazard simultaneously.
Summary of the invention
The purpose of this utility model is exactly to solve now with the problems referred to above that exist in the technology, a kind of capacitive apparatus uninterrupted power test box is provided, adopt this testing cassete and testing tool to be used, can have a power failure and just can carry out the test of indexs such as dielectric loss to capacitive apparatus, the project of the test that need have a power failure is high efficiency then.
For finishing above-mentioned purpose, technical solution of the present utility model is: a kind of capacitive apparatus uninterrupted power test box, it comprises discharge prevention loop, calibrating terminal loop and the disconnecting link ground loop that is connected in parallel between terminals A and the earth terminal B, the discharge prevention loop is two gapped sparking electrodes, and two sparking electrodes are connected to terminals A and earth terminal B; The calibrating terminal loop comprises the terminals C and the single-pole single-throw switch (SPST) of capacitive apparatus end screen ground lead, and single-pole single-throw switch (SPST) one end is connected terminals A and terminals C, and the other end connects earth terminal B; The disconnecting link ground loop comprises the disconnecting link of dpdt double-pole double-throw (DPDT), and an end of disconnecting link is connected terminals A, and the other end connects earth terminal B; The disconnecting link of terminals A, C, earth terminal B, sparking electrode, single-pole single-throw switch (SPST), dpdt double-pole double-throw (DPDT) is fixed on the insulation fixed head, and the insulation fixed head is fixed on the conducting metal housing of testing cassete, and the conducting metal housing connects earth terminal B.
Calibrating terminal of the present utility model loop is used for the access of p-wire; the disconnecting link ground loop is used for the protection after ground connection is opened in the calibrating terminal loop, and the discharge prevention loop is used for preventing the injury that end screen voltage that test process causes because of reasons such as imperfect earth and p-wire come off raises personnel and equipment are caused.
The utility model is guided to ground with the end screen of capacitive apparatus, the condition of providing convenience for the equipment uninterrupted power test under the prerequisite that guarantees end screen ground connection reliability.Have the following advantages: (1) can be under situation about not having a power failure and dielectric loss tester etc. be used, thereby under the power-off condition capacitive apparatus such as CT are not being carried out the test of dielectric loss and electric capacity, bring great convenience for the collecting device status information; And effective discovering device built-in electrical insulation fault.The no longer frequent end screen ground lead that disconnects has been stopped frequent to disconnect that imperfect earth that end screen ground lead causes or end screen box make moist and the generation of situation that influences the normal operation of equipment.(2) when having a power failure test, can directly access p-wire from ground, save testing crew cat ladder and disconnected the process that shield at the end up and down, thereby the test duration can be shortened to more than 15 minutes in 5 minutes by every original equipment, improve power failure experiment work efficient greatly.And stopped the danger that the operation of staff's cat ladder brings.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
As shown in Figure 1, present embodiment comprises discharge prevention loop, calibrating terminal loop and the disconnecting link ground loop that is connected in parallel between terminals A and the earth terminal B.The discharge prevention loop is the discharge tube 1 that two gapped sparking electrodes are made, and two sparking electrodes of discharge tube 1 are connected to terminals A and earth terminal B.The calibrating terminal loop comprises the terminals C and the single-pole single-throw switch (SPST) 2 of capacitive apparatus end screen ground lead, and single-pole single-throw switch (SPST) 2 one ends are connected terminals A and terminals C, and the other end connects earth terminal B.The disconnecting link ground loop comprises the disconnecting link 3 of dpdt double-pole double-throw (DPDT), and an end of disconnecting link 3 is connected terminals A, and the other end connects earth terminal B.The disconnecting link of terminals A, C, earth terminal B, discharge tube 1, single-pole single-throw switch (SPST) 2, dpdt double-pole double-throw (DPDT) 3 is fixed on the insulation fixed head, the insulation fixed head is fixed on by screw, pad, nut on the conducting metal housing of testing cassete, and the conducting metal housing connects earth terminal B.
Claims (1)
1. capacitive apparatus uninterrupted power test box, it is characterized in that: it comprises discharge prevention loop, calibrating terminal loop and the disconnecting link ground loop that is connected in parallel between terminals A and the earth terminal B, the discharge prevention loop is two gapped sparking electrodes, and two sparking electrodes are connected to terminals A and earth terminal B; The calibrating terminal loop comprises the terminals C and the single-pole single-throw switch (SPST) of capacitive apparatus end screen ground lead, and single-pole single-throw switch (SPST) one end is connected terminals A and terminals C, and the other end connects earth terminal B; The disconnecting link ground loop comprises the disconnecting link of dpdt double-pole double-throw (DPDT), and an end of disconnecting link is connected terminals A, and the other end connects earth terminal B; The disconnecting link of terminals A, C, earth terminal B, sparking electrode, single-pole single-throw switch (SPST), dpdt double-pole double-throw (DPDT) is fixed on the insulation fixed head, and the insulation fixed head is fixed on the conducting metal housing of testing cassete, and the conducting metal housing connects earth terminal B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206761060U CN201945639U (en) | 2010-12-23 | 2010-12-23 | Power uninterrupted test box for capacitive equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206761060U CN201945639U (en) | 2010-12-23 | 2010-12-23 | Power uninterrupted test box for capacitive equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945639U true CN201945639U (en) | 2011-08-24 |
Family
ID=44472979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206761060U Expired - Fee Related CN201945639U (en) | 2010-12-23 | 2010-12-23 | Power uninterrupted test box for capacitive equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362945A (en) * | 2018-04-18 | 2018-08-03 | 广东电网有限责任公司 | A kind of bushing shell for transformer distal end power failure experimental rig and method |
-
2010
- 2010-12-23 CN CN2010206761060U patent/CN201945639U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362945A (en) * | 2018-04-18 | 2018-08-03 | 广东电网有限责任公司 | A kind of bushing shell for transformer distal end power failure experimental rig and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20171223 |