CN203204143U - Electroscope test voltage generator - Google Patents
Electroscope test voltage generator Download PDFInfo
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- CN203204143U CN203204143U CN 201320147236 CN201320147236U CN203204143U CN 203204143 U CN203204143 U CN 203204143U CN 201320147236 CN201320147236 CN 201320147236 CN 201320147236 U CN201320147236 U CN 201320147236U CN 203204143 U CN203204143 U CN 203204143U
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- electroscope
- voltage generator
- transformer
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Abstract
The utility model relates to an electroscope test voltage generator comprising an operation power source, wherein the operation power source supplies electricity to a control return circuit which is provided with a control power source switch and an air switch, the air switch is respectively connected to a time relay and an alternating current contacting device, the time relay and the alternating current contacting device are connected with each other, the alternating current contacting device is connected to a voltage change-over switch which is connected to a low voltage side input end of a voltage transformer, and a high voltage side output end of the voltage transformer is arranged in an operation box. The electroscope test voltage generator is advantageous in that (1) the electroscope test voltage generator is small in size, light in weight, small in occupied space, and convenient in installation; and the electroscope test voltage generator is portable; (2) cumbersome voltage adjustment is eliminated in operation processes, and safety and convenience of use are realized; and (3) a wire man can conveniently verify whether an electricity detection pen is in good condition before hanging a ground wire, operation safety is guaranteed, and electricity detection problems of all power-cut places can be solved, and personal safety and equipment safety can be guaranteed.
Description
Technical field
The utility model relates to a kind of electroscope trial voltage generator.
Background technology
Work at electrical equipment, the electrical verification operation is one of mandatory assurance technical safety measures.Verify clearly that by electroscope power failure equipments has no-voltage, carry out again other operations, to prevent charged attaching ground wire (splice grafting ground disconnecting link), to miss the generation of bumping the serious accidents such as electric equipment.Therefore, during electrical verification: should use the relevant voltage grade, qualified contact electroscope is located each mutually respectively electrical verification at installing ground wire or splice grafting ground disconnecting link (device); Before the electrical verification: should have electric equipment to test first, the conclusive evidence electroscope be good, can't be when having electric equipment to test can be good with conclusive evidence electroscopes such as power frequency high voltage generators.
At present, because power frequency high voltage generator exists volume larger, carry and unhandy problem, the site operation personnel use the self check button on the electroscope to carry out the electroscope inspection usually, do not meet electrical production trouble free service regulation.Certain Utilities Electric Co. of south occured once that electroscope is malfunctioning together, and galvanoscopic self check indication electroscope is normal, and a line loop operation workman assert that electroscope is intact, judges after the electrical verification that circuit without electricity, charged attaching ground wire occurs, causes the malignant event of getting an electric shock and dying.Therefore, be necessary to design a kind of carrying and easy to operate electroscope trial voltage generator.
The utility model content
The utility model is made improvement for the problem that above-mentioned prior art exists, and namely the technical problems to be solved in the utility model provides that a kind of space hold is little, electrical verification convenient and safe electroscope trial voltage generator.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of electroscope trial voltage generator, comprise operating power, described operating power is the control loop power supply, be provided with control power switch and air switch on the described control loop, described air switch is connected to respectively the time relay and A.C. contactor, the described time relay is connected with A.C. contactor, described A.C. contactor is connected to voltage changeover switch, described voltage changeover switch is connected to the low-pressure side input end of voltage transformer (VT), and the high-pressure side output terminal of described voltage transformer (VT) is arranged in the control box.
Further, described control loop is connected with the signal designation loop, and the signal lamp in described signal designation loop is connected to A.C. contactor.
Further, the low-pressure side input end of described voltage transformer (VT) is provided with the voltage table that shows high-pressure side output terminal virtual voltage.
Further, described operating power is AC 220V power supply.
Further, described voltage changeover switch has a plurality of gears.
Further, described voltage transformer (VT) is arranged in the transformer chest, and described transformer chest and control box are made into integral type.Or described voltage transformer (VT) and control box are fixedly mounted on the switchgear building wall with split type.
The utlity model has following beneficial effect: (1) volume is little, lightweight, and institute takes up space little, installation, easy to carry; Need not to carry out loaded down with trivial details pressure regulation when (2) operating, use safety, convenient; (3) make things convenient for linemen's to verify before hanging earthing conductor whether electroscope is intact, guarantees handling safety, solved the electrical verification problem in whole power failures place, guaranteed the person and device security.
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the theory diagram of the utility model embodiment.
Fig. 2 is the scheme of installation one of the utility model embodiment.
Fig. 3 is the scheme of installation two of the utility model embodiment.
Among the figure: 1-controls power switch, 2-voltage changeover switch, 3-voltage transformer (VT), 31-high-pressure side output terminal, 4-control box, 5-switch knob, 6-opening button, 7-red led, 8-green indicating lamp, 9-voltage table, 10-PT cabinet, 11-switchgear building wall.
Embodiment
As shown in Figure 1, a kind of electroscope trial voltage generator, comprise operating power, described operating power is the control loop power supply, be provided with control power switch 1 and air switch on the described control loop, described air switch is connected to respectively the time relay and A.C. contactor, the described time relay is connected with A.C. contactor, described A.C. contactor is connected to voltage changeover switch 2, described voltage changeover switch 2 is connected to the low-pressure side input end of voltage transformer (VT) 3, and the high-pressure side output terminal 31 of described voltage transformer (VT) 3 is arranged in the control box 4.
In the present embodiment, described operating power is AC 220V civil power, and described voltage transformer (VT) 3 is 1.5 ~ 4kV/0.22kV type, and described voltage table is the 4/0.22kV type.Described air switch is comprised of switch knob 5 and opening button 6, and described voltage changeover switch 2 has output voltage 1.4kV, 1.5kV, 3kV, 4kV and five gears of 4.2kV.
In the present embodiment, described control loop is connected with the signal designation loop, the signal lamp in described signal designation loop is connected to A.C. contactor, and described signal lamp comprises the red led 7 that is used to indicate "on" position and the green indicating lamp 8 that is used to indicate gate-dividing state.The low-pressure side input end of described voltage transformer (VT) 3 is provided with the voltage table 9 that shows high-pressure side output terminal 31 virtual voltages.
As shown in Figure 2, described voltage transformer (VT) 3 is arranged in the transformer chest 10, described transformer chest 10 is made into integral type so that carry transportation with control box 4, and described control power switch 1, air switch, voltage changeover switch 2, signal lamp and voltage table 9 all are arranged on the cabinet door of transformer chest 10.Certainly, the mounting means of described voltage transformer (VT) 3 and control box 4 can also be to be fixedly mounted on the switchgear building wall 11, as shown in Figure 3 with split type; During use, can go test with the electroscope that is installed on telescopic insulating bar end.
The principle of work of the present embodiment is as follows: described operating power input AC 220V voltage, connect control loop by switch knob 5, red led 7 is glittering, make AC 220V power supply access respectively the different windings of voltage transformer (VT) 3 low-pressure sides by switched voltage change-over switch 2, and at voltage transformer (VT) 3 high-pressure sides output 1.4kV, 1.5kV, 3kV, the voltage that 4kV is different with 4.2kV, output frequency is 50HZ, show that by the voltage table 9 that is connected on voltage transformer (VT) 3 low-pressure sides monitoring winding high-pressure side output terminal 31 gets virtual voltage, realized delayed-breaking-off function by the time relay and A.C. contactor, guarantee to test complete rear automatic cut-out voltage generator power supply, prevent that the staff from bumping by mistake.
Power industry standard " DL740-2000 " has been made clear to the galvanoscopic starting voltage of category-A (commonly using): the trigger voltage value is not higher than 40% of rated voltage, is not less than 15% of rated voltage, i.e. 0.15 UN≤UST≤0.40UN.That is to say what galvanoscopic trigger voltage method of testing and proving installation were all finished under this prerequisite, any with it different method of testing and device experiment result out is inaccurate.
The voltage generator of the present embodiment output 1.4kV ~ 4.2kV voltage can be used for testing the galvanoscopic inductor of portable 10kV, can audible-visual annunciator work, and meets the relevant regulations of safety.Its function is used for a kind of electric signal generating means of electroscope starting voltage test for providing the monopolar type AC signal to electroscope.It is 50HZ that this voltage generator possesses output frequency, the trial voltage output function of output voltage 1.4kV, 1.5kV, 3kV, 4kV and the different gears of 4.2kV.This voltage generator mainly is applicable to the place that switchgear building, 10kV line maintenance etc. have a power failure fully, before carrying out the equipment electrical verification, need inspection that whether electroscope is worked, but can not find the situation that the electroscope integrity checks of carrying out that electric equipment is arranged of relevant voltage grade.
The above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (7)
1. electroscope trial voltage generator, comprise operating power, it is characterized in that: described operating power is the control loop power supply, be provided with control power switch and air switch on the described control loop, described air switch is connected to respectively the time relay and A.C. contactor, the described time relay is connected with A.C. contactor, described A.C. contactor is connected to voltage changeover switch, described voltage changeover switch is connected to the low-pressure side input end of voltage transformer (VT), and the high-pressure side output terminal of described voltage transformer (VT) is arranged in the control box.
2. electroscope trial voltage generator according to claim 1, it is characterized in that: described control loop is connected with the signal designation loop, and the signal lamp in described signal designation loop is connected to A.C. contactor.
3. electroscope trial voltage generator according to claim 1 is characterized in that: the low-pressure side input end of described voltage transformer (VT) is provided with the voltage table that shows high-pressure side output terminal virtual voltage.
4. electroscope trial voltage generator according to claim 1, it is characterized in that: described operating power is AC 220V power supply.
5. electroscope trial voltage generator according to claim 1, it is characterized in that: described voltage changeover switch has a plurality of gears.
6. electroscope trial voltage generator according to claim 1, it is characterized in that: described voltage transformer (VT) is arranged in the transformer chest, and described transformer chest and control box are made into integral type.
7. electroscope trial voltage generator according to claim 1, it is characterized in that: described voltage transformer (VT) and control box are fixedly mounted on the switchgear building wall with split type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320147236 CN203204143U (en) | 2013-03-28 | 2013-03-28 | Electroscope test voltage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320147236 CN203204143U (en) | 2013-03-28 | 2013-03-28 | Electroscope test voltage generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203204143U true CN203204143U (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320147236 Expired - Fee Related CN203204143U (en) | 2013-03-28 | 2013-03-28 | Electroscope test voltage generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN203204143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108603902A (en) * | 2016-02-06 | 2018-09-28 | 深圳华盛昌机械实业有限公司 | Induction type test pencil and application method |
-
2013
- 2013-03-28 CN CN 201320147236 patent/CN203204143U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108603902A (en) * | 2016-02-06 | 2018-09-28 | 深圳华盛昌机械实业有限公司 | Induction type test pencil and application 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: 20130918 Termination date: 20200328 |