CN2784940Y - Specialized equipment comparator - Google Patents
Specialized equipment comparator Download PDFInfo
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- CN2784940Y CN2784940Y CN 200520025533 CN200520025533U CN2784940Y CN 2784940 Y CN2784940 Y CN 2784940Y CN 200520025533 CN200520025533 CN 200520025533 CN 200520025533 U CN200520025533 U CN 200520025533U CN 2784940 Y CN2784940 Y CN 2784940Y
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Abstract
The utility model relates to a specialized equipment comparator which is composed of a voltage reduction sample circuit, a current limiting circuit, an active rectification circuit, an error compensation circuit, an A/D conversion circuit, a drive circuit and a display circuit, wherein the voltage reduction sample circuit and the current limiting circuit are respectively connected with the active rectification circuit, the error compensation circuit, the A/D conversion circuit and the drive circuit. The active rectification circuit, the error compensation circuit, the A/D converting circuit and the drive circuit are connected with the display circuit. The active rectification circuit, the error compensation circuit, the A/D converting circuit, the drive circuit and the display circuit are connected with a power supply and a reference power supply for power supply. The utility model is also provided with a protective circuit which is composed of a small comparison resistor, and a high-voltage resistor box. The utility model has the characteristics of complete functions, stable performance, little error, convenient operation, safety, small size and low cost. At present, the congener instrument does not exist in China; the utility model is a detecting instrument used for daily operational detection for low-voltage electric equipment industries.
Description
Technical field:
The utility model belongs to the detection technique field of low-voltage complete switch equipment and opertaing device.Be to carry out the day-to-day operation inspection, confirm the detecting instrument----special equipment comparator of detecting instrument and testing equipment correctness and validity at low-voltage complete switch equipment and opertaing device factory product export testing instruments and testing equipment.
Background technology:
Low-pressure electric controlled distribution product and equipment will have good security, reliability, and can satisfy the technical requirement of relevant criterion, factory must have dispatch from the factory accordingly detection means and relevant detection instrument and testing equipment, at first need dispatch from the factory detecting instrument and testing equipment are detected, whether satisfy the relevant criterion requirement with correctness and the validity of confirming detecting instrument and testing equipment.During prior art is used, if will carry out following five major functions detection: dielectric magnitude of voltage, insulation voltage value, dielectric electric current leakage value, insulation resistance, holding circuit validity resistance value to low-voltage complete switch equipment and opertaing device factory product export detecting instrument, testing equipment.Need several different instruments, and complicated operation, danger, it is big, lack of standardization to detect error, and instrument and equipment costs an arm and a leg, heaviness.At present domestic automatically controlled distribution industry is done the day-to-day operation inspection to product export detecting instrument and testing equipment does not still have specialized equipment, even indivedual manufacturer can't carry out the day-to-day operation inspection to product export detecting instrument and testing equipment.
Summary of the invention:
The purpose of this utility model provides a kind of special equipment comparator (hereinafter to be referred as comparer), be the detecting instrument and the testing equipment of product export check to be done the day-to-day operation inspection at low tension switch set of equipments and opertaing device factory, confirm the detecting instrument of its correctness and validity, thereby improved the qualification rate of the product that dispatches from the factory.
Content of the present utility model is:
A kind of special equipment comparator is characterized in that: be made up of step-down sample circuit, current limitation circuit, active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit, display circuit; Step-down sample circuit, current limitation circuit connect active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit respectively; Active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit connect display circuit; Active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit and display circuit are connected power supply by power supply, reference power supply; Also has the holding circuit effective sex ratio than active component; High-tension resistive case part is arranged in addition.
The utility model characteristics are: multiple functional, stable performance, error is little, easy and simple to handle, safe and reliable, volume is little, price is low.The present domestic same quasi-instrument that still do not have, domestic this blank has been filled up in the exploitation of this comparer, is the detecting instrument that the low voltage electrical apparatus industry station-service is checked in day-to-day operation.
1, comparer adopts electric resistance partial pressure sampling, error compensation circuit, selects the high pressure input probe for use, and ((DC 0～2000V) with the insulation voltage value for AC 0～5000V) directly to detect the dielectric magnitude of voltage by switch transition.
2, a comparer can be done following five Function detection:
1. dielectric magnitude of voltage (AC effective value 0～5000V)
2. insulation voltage value (DC mean value 0～2000V)
3. dielectric electric current leakage value (AC effective value 0～20mA, 0～200mA, 0～1000mA)
4. insulation resistance (0～1000M Ω stepping)
5. holding circuit validity resistance value (0～100m Ω stepping can pass through the 10A electric current)
3, the direct leakage current values that sets of detecting instrument need not be connected in series add ons.
4, comparer is built-in is used to detect the required comparison resistance of holding circuit validity test instrument (0～1m Ω, 0～10m Ω, 0～100m Ω) and can passes through the 10A electric current.
5, the built-in high pressure of comparer (1000V) resistance box (0～1000M Ω stepping).
6, when detecting insulation voltage (DC) value, this comparer has input operation error warning function during mistake input dielectric voltage (AC) value.
Description of drawings:
Fig. 1 is that (dotted portion is voltage, electric current rating unit to the special equipment comparator theory diagram, by the 220V mains-supplied.)
Fig. 2 be the special equipment comparator theory diagram (dotted portion be the holding circuit effective sex ratio than active component and high-tension resistive case, need not power.)
Fig. 3 is step-down sample circuit, current limitation circuit, active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit, display circuit electrical schematic diagram
Fig. 4 is power supply, reference power supply electrical schematic diagram
Fig. 5 is that the holding circuit effective sex ratio is than the active component electrical schematic diagram
Fig. 6 is a high-tension resistive case part electrical schematic diagram
Embodiment:
This special equipment comparator is made up of step-down sample circuit, current limitation circuit, active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit, display circuit; Step-down sample circuit, current limitation circuit connect active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit respectively; Active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit connect display circuit; Active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit and display circuit are connected power supply by power supply, reference power supply; Also has the holding circuit effective sex ratio than active component; High-tension resistive case part is arranged in addition.
Its detection method:
1, the dielectric magnitude of voltage detects: comparer adopts divider resistance step-down sampling, convert the DC simulation signal to through active rectifying circuit, with the A/D converter is that core and decoding, driving display circuit constitute the voltage detecting loop, and adopts four half word displays to show testing result.
2, the insulation voltage value detects: comparer is taken a sample through electric resistance partial pressure, being inputed to the A/D converter by function switch control is the voltage detecting loop that core and decoding, driving display circuit constitute, by adjusting the reference voltage of reference power supply output, compensate the error that sample circuit and wiring produce, the insulation voltage value (DC) that detects is presented on four and half displays.
3, dielectric current detecting: the dielectric electric current is after the current-limiting resistance current limliting, convert ac voltage signal to by measuring resistance, convert direct current signal to through active rectifying circuit and ratio amplifying circuit, by regulating the magnification ratio of proportional amplifier, the dielectric leakage current values equivalence that current detection circuit is detected is presented on four and half displays.
4, holding circuit validity resistance ratio: comparer is built-in to be used to detect the required 1m Ω of holding circuit validity test instrument, 10m Ω, 100m Ω measuring resistance (can pass through the 10A electric current), with the correctness and the validity of checking holding circuit validity test instrument.
5, insulation resistance relatively: the built-in high pressure of comparer (1000V) comparison resistance case, resistance box according to different demands divide 0.5, eight grades of 1M Ω, 5M Ω, 10M Ω, 50M Ω, 100M Ω, 500M Ω, 1000M Ω, correctness and validity with the checking Insulation Resistance Tester, and closed shield, strengthen interference free performance, guaranteed measurement accuracy.
1, utilize analog digital switch technology and detection technique to make the detecting instrument of dielectric voltage, dielectric leakage current, insulation voltage, insulation resistance and five Function detection of holding circuit validity at low-pressure electric controlled distribution product export detecting instrument and delivery test equipment.It is characterized in that: a comparer can detect above-mentioned five functions.
2, utilize analog digital switch technology and detection technique directly to detect the output voltage values of pressure-resistant tester and Insulation Resistance Tester.It is characterized in that: ((DC 0～2000V), need not any add ons for the insulation voltage value of AC 0～5000V) and Insulation Resistance Tester output directly to detect the high tension dielectric magnitude of voltage of tested pressure-resistant tester output by the high voltage input terminal mouth.
3, (AC 0～1000mA) to utilize analog digital switch technology and detection technique directly to detect the dielectric leakage current values.The stream holding circuit of limiting in the comparer need not external any protecting component in the detection.
4, utilize measuring resistance manufacturing technology and detection technique, detect the resistance detection value of holding circuit validity test instrument.In establish 3 and can compare with the oil immersed type measuring resistance by the comparison resistance (1m Ω, 10m Ω, 100m Ω) of 10A electric current, and can adjust resistance arbitrarily, guarantee the comparison resistance precision.
5, use device manufacturing technology and detection technique detect the measured insulation resistance resistance of Insulation Resistance Tester.Built-in high-voltage high resistance instrument (1000V 0～1000M Ω stepping), its input termination adopts the self-control high pressure to detect the termination, and it is copper material that high pressure detects the termination inner core, and the outsourcing high voltage insulating materials promptly meets request for utilization and reaches safety standard again.The high resistant instrument adopts hermetically sealed screening can, has strengthened interference free performance, has guaranteed measurement accuracy.
Claims (1)
1, a kind of special equipment comparator is characterized in that: be made up of step-down sample circuit, current limitation circuit, active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit, display circuit; Step-down sample circuit, current limitation circuit connect active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit respectively; Active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit connect display circuit; Active rectifying circuit, error compensation circuit, A/D change-over circuit, driving circuit and display circuit are connected power supply by power supply, reference power supply; Also has the holding circuit effective sex ratio than active component; High-tension resistive case part is arranged in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520025533 CN2784940Y (en) | 2005-04-05 | 2005-04-05 | Specialized equipment comparator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520025533 CN2784940Y (en) | 2005-04-05 | 2005-04-05 | Specialized equipment comparator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2784940Y true CN2784940Y (en) | 2006-05-31 |
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ID=36771911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520025533 Expired - Fee Related CN2784940Y (en) | 2005-04-05 | 2005-04-05 | Specialized equipment comparator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2784940Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749250A (en) * | 2012-07-06 | 2012-10-24 | 四川大学 | Uniaxial-creep testing machine |
| CN110161432A (en) * | 2019-05-09 | 2019-08-23 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of aviation AC supply voltage Acquisition Circuit |
-
2005
- 2005-04-05 CN CN 200520025533 patent/CN2784940Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749250A (en) * | 2012-07-06 | 2012-10-24 | 四川大学 | Uniaxial-creep testing machine |
| CN102749250B (en) * | 2012-07-06 | 2014-03-19 | 四川大学 | Uniaxial-creep testing machine |
| CN110161432A (en) * | 2019-05-09 | 2019-08-23 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of aviation AC supply voltage Acquisition Circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xiamen Minguang Electrical Industrial Co., Ltd. Assignor: Tianjin Electric Transmission Design and Research Institute Contract fulfillment period: 2006.6.8 to 2012.6.7 Contract record no.: 2008351000057 Denomination of utility model: Specialized equipment comparator Granted publication date: 20060531 License type: Exclusive license Record date: 20081128 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.6.8 TO 2012.6.7; CHANGE OF CONTRACT Name of requester: XIAMEN MINGUANG ELECTRICAL GAS INDUSTRY CO.,LTD. Effective date: 20081128 |
|
| DD01 | Delivery of document by public notice |
Addressee: Wang Rongsheng Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060531 Termination date: 20100405 |