CN2207654Y - High voltage earthing protective implement - Google Patents
High voltage earthing protective implement Download PDFInfo
- Publication number
- CN2207654Y CN2207654Y CN 94228640 CN94228640U CN2207654Y CN 2207654 Y CN2207654 Y CN 2207654Y CN 94228640 CN94228640 CN 94228640 CN 94228640 U CN94228640 U CN 94228640U CN 2207654 Y CN2207654 Y CN 2207654Y
- Authority
- CN
- China
- Prior art keywords
- ground
- circuit
- high voltage
- voltage
- protective device
- Prior art date
- 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
Links
- 230000001681 protective effect Effects 0.000 title abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 230000001755 vocal effect Effects 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000000977 initiatory effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a high voltage ground protective device which belongs to a protective device for high voltage testing devices used for detecting the insulating performance of materials. The high voltage ground protective device is composed of a detecting circuit, a control circuit and an alarm circuit. The utility model can guarantee that high-voltage testers can not be started when not on the ground, and when ground faults occur during a test, the power supply source can be switched off automatically and audible and visual alarms can be sent out simultaneously, so that the safe operation of the high-voltage testers and the controllers thereof can be guaranteed. The utility model with the advantages of simple circuit, small size and convenient installation doesn't need to be directly grounded and also doesn't require the zero line and the live wire to be distinguished. Besides, the high voltage ground protective device can be used for ground protection in other occasions requiring ground contact.
Description
A kind of high-voltage earthing protection device, it belongs to the protective device of electric power system to the high-tension testing apparatus of material insulation property detection.
In the prior art, high-voltage tester that electric power system is generally used and controller thereof only have overvoltage and overcurrent protection function, still do not have the ground protection function.Therefore, often, high-voltage tester do not cause its controller to damage, the serious human casualty accident that causes owing to having ground connection.
The purpose of this utility model is; for high-voltage tester and controller thereof are developed a kind of high-voltage earthing protection device; this device should guarantee that high-voltage tester can't start when earth-free; in a single day the power supply that earth fault meeting automatic disconnection high-voltage tester in process of the test, occurs; and send language alarm and light signal simultaneously, to guarantee the security row fortune of high-voltage tester and controller thereof.
The utility model technical solution is: a kind of high-voltage earthing protection device, it mainly is made up of testing circuit, control circuit and warning circuit.Special character of the present utility model is: by diode D
1And D
2, resistance R
1, photoelectrical coupler GO
1With button K
1Constitute testing circuit; By potentiometer R
W, adjustable accurate pressurizer T
1And relay J
1Constitute control circuit; By relay J
2, the language integrated circuit (IC)
1With power amplifier IC
2Constitute the verbal cue warning circuit.
Terminal A links to each other with the earth terminal of high-voltage tester shell.
The guiding theory of above-mentioned technical solution is: adopt diode D
1, D
2, both realized the isolation of zero-power line and live wire, guaranteed the testing circuit operate as normal again, and do not needed the zero line side and the live wire end of input civil power are offered an explanation; Terminal A links to each other with the earth terminal of high-voltage tester shell, and this protective device itself does not require direct ground connection, does not also increase the earth point of protected equipment.Button K
1And K
2Moving with the power initiation binding.Press the power initiation key, relay J
2Just action, the working power of connection warning circuit, if this moment is terminal A ground connection, then photoelectrical coupler GO
1Work, relay J
1Action makes power supply to power devices, does not send sound, visual alarm; There is not ground connection as if terminal A, then photoelectrical coupler GO
1Do not work relay J
1Be failure to actuate, power supply sends sound, visual alarm simultaneously not to power devices.
Effect of the present utility model is: a kind of high-voltage earthing protection device; it mainly is made up of testing circuit, control circuit, warning circuit; this device can guarantee that high-voltage tester can't start when earth-free; the power supply that in a single day occurs earth fault meeting automatic disconnection high-voltage tester in the process of the test; and send language alarm and light signal simultaneously, guaranteed the safe operation of high-voltage tester and controller thereof.This device circuit is simple, volume is little, easy for installation, itself does not require direct ground connection, and the zero line side and the live wire end of input civil power do not required resolution yet, it also can require the occasion of ground connection to make ground protection at other to use.
Description of drawings:
Accompanying drawing 1 is a kind of high-voltage earthing protection Device Testing circuit.
Accompanying drawing 2 is control circuits of high-voltage earthing protection device.
Accompanying drawing 3 is verbal cue warning circuits of high-voltage earthing protection device.
Be an embodiment of the present utility model below, provide details of the present utility model by description to the accompanying drawing of this enforcement.
Fig. 1 is a kind of high-voltage earthing protection Device Testing circuit.Among the figure, main element has two diode D that are connected with AC power
1And D
2, resistance R
1, photoelectrical coupler GO
1, normally opened contact J
1-1And J
1-2, button K
1With earth terminal A, interelement connection as shown.
Fig. 2 is the control circuit of high-voltage earthing protection device.Mainly by relay J
1, potentiometer R
W, adjustable accurate pressurizer T
1Form Deng element, power supply is DC power supply U
1
Fig. 3 is the verbal cue warning circuit of high-voltage earthing protection device.Use DC power supply u
1, this circuit is mainly by relay J
2, button K
2, normally opened contact J
2-1And J
1-3, the language integrated circuit (IC)
1, power amplifier IC
2, element such as LED forms.
The operation principle of high-voltage earthing protection device is described below: adopt diode D with Fig. 1,2,3
1, D
2Both realized the isolation of zero-power line and live wire, guaranteed the testing circuit operate as normal again, and do not needed the zero line side and the live wire end of input civil power are offered an explanation; Terminal A links to each other with the earth terminal of high-voltage tester shell, and this device itself does not require direct ground connection, does not also increase the earth point of protected equipment; Button K
1And K
2Moving with the power initiation binding, after having guaranteed to introduce this device, do not change the operating procedure of original equipment; Press the power initiation key, relay J
2Normally opened contact J
2-1Just be in attracting state, then connected the working power of warning circuit, thus guaranteeing just to send warning in case earth fault occurs, if this moment is equipment ground, then T
1Conducting, J
1Adhesive, power supply is through J
1Normally opened contact J
1-2To power devices, language sheet IC
1Trigger terminal through J
1Normally opened contact J
1-3Be connected to power cathode (R
9And C
2Form delay circuit, prevent) at energising moment generation false alarm.There is not ground connection as if equipment, then J
1Still be in release condition, guarantee not to power devices, simultaneously, warning circuit sends " please checkout facility whether ground connection, take care ", and language proposes and LED indicates.In a single day earth fault, J appear in equipment in running
1Discharge immediately, stop to power devices, warning circuit sends alarm signal simultaneously, thereby has guaranteed device security, reliability service.
Claims (2)
1, a kind of high-voltage earthing protection device, it mainly is made up of testing circuit, control circuit and warning circuit, and of the present utility model being characterised in that is by diode D
1And D
2, resistance R
1, photoelectrical coupler GO
1With button K
1Constitute testing circuit, by potentiometer R
W, adjustable accurate pressurizer T
1And relay J
1Constitute control circuit, by relay J
2, the language integrated circuit (IC)
1With power amplifier IC
2Constitute the verbal cue warning circuit.
2, high-voltage earthing protection device according to claim 1 is characterized in that, terminal A links to each other with the earth terminal of high-voltage tester shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228640 CN2207654Y (en) | 1994-05-18 | 1994-05-18 | High voltage earthing protective implement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228640 CN2207654Y (en) | 1994-05-18 | 1994-05-18 | High voltage earthing protective implement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2207654Y true CN2207654Y (en) | 1995-09-13 |
Family
ID=33841141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94228640 Expired - Fee Related CN2207654Y (en) | 1994-05-18 | 1994-05-18 | High voltage earthing protective implement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2207654Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004102762A1 (en) * | 2003-04-29 | 2004-11-25 | Li Hung Calog Ting Cheng | Safety device for electric equipments |
| CN102128955A (en) * | 2010-12-21 | 2011-07-20 | 山东电力集团公司超高压公司 | Auxiliary safety measure device for high-voltage test |
| CN105182270A (en) * | 2015-07-31 | 2015-12-23 | 华立仪表集团股份有限公司 | Device and method of electric energy meter voltage-withstand test |
-
1994
- 1994-05-18 CN CN 94228640 patent/CN2207654Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004102762A1 (en) * | 2003-04-29 | 2004-11-25 | Li Hung Calog Ting Cheng | Safety device for electric equipments |
| CN102128955A (en) * | 2010-12-21 | 2011-07-20 | 山东电力集团公司超高压公司 | Auxiliary safety measure device for high-voltage test |
| CN102128955B (en) * | 2010-12-21 | 2012-11-14 | 山东电力集团公司超高压公司 | Auxiliary safety measure device for high-voltage test |
| CN105182270A (en) * | 2015-07-31 | 2015-12-23 | 华立仪表集团股份有限公司 | Device and method of electric energy meter voltage-withstand test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201846069U (en) | Arc light protector | |
| US6631063B2 (en) | System for monitoring electrical circuit operation | |
| US20100118452A1 (en) | Safety device for prevention of electrical shocks | |
| CA2149149A1 (en) | Load analysis system for fault detection | |
| CN201122807Y (en) | Switch cabinet status indicator | |
| CN108183462A (en) | Electrical protection device for electrical equipment and electrical equipment | |
| CN104330730B (en) | The connection of catalyst and disjunction test monitoring protection device and the method for operation thereof | |
| CN208043923U (en) | A kind of insulation leakagel volume leakage automatic detection device of distribution box | |
| CN105044542A (en) | State automatic detection method of temporary grounding line of electrical equipment | |
| CN2207654Y (en) | High voltage earthing protective implement | |
| CN220575063U (en) | Safety protection device for preventing electric welding machine shell from being ungrounded | |
| CN2338042Y (en) | Driving device for high effect fire-fighting equipment | |
| CN102213738A (en) | Short-circuit test device of electric equipment | |
| CN110488131A (en) | A kind of electric wiring leak current fault detection system based on signal triggering | |
| CN202094621U (en) | Intelligent monitoring type surge protector | |
| CN202050230U (en) | Surge protector with monitoring function | |
| KR102236198B1 (en) | Apparatus for pre-determining ground fault of electric railway | |
| CN114783154A (en) | Alarm control system of high-voltage test safety fence | |
| CN217981700U (en) | Prevention and control monitoring protection device and system for emergency repair of power distribution network | |
| CN217676209U (en) | Elevator short-circuit wire warning device | |
| CN209860586U (en) | Low-current grounding line selection relay | |
| CN219302589U (en) | Current fault indicator | |
| CN208156116U (en) | Safety detection device for cable maintenance safety area | |
| CN201985511U (en) | Controllable device of surge protector | |
| CN106936214A (en) | 380V distribution line power transmission caution systems and its implementation based on power line carrier, PLC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |