CN201429657Y - Novel relaying check meter - Google Patents
Novel relaying check meter Download PDFInfo
- Publication number
- CN201429657Y CN201429657Y CN2009200702545U CN200920070254U CN201429657Y CN 201429657 Y CN201429657 Y CN 201429657Y CN 2009200702545 U CN2009200702545 U CN 2009200702545U CN 200920070254 U CN200920070254 U CN 200920070254U CN 201429657 Y CN201429657 Y CN 201429657Y
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- voltage
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- transformer
- output
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- Expired - Lifetime
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Abstract
The utility model discloses a novel relaying check meter, which belongs to the technical field of test. The novel relaying check meter comprises a casing, a power switch installed on the casing, a protecting device installed in the casing, a current output terminal installed on the casing and a voltage output terminal installed on the casing, and the circuits in the check meter comprise a currentoutput circuit and a voltage output circuit. A metering device is designed in the check meter, the wiring of the external test loop is reduced, and simultaneously, the two voltage levels most commonlyused in relaying secondary loop test, namely, 50V which is close to the phase voltage level and 100 V as the line voltage level, so as to save the cost. The novel relaying check meter has the advantages of simple operation, light weight, strong but no redundant functions, simple wiring and low price.
Description
Technical field
The utility model relates to a kind of guarantor's of continuing tester, is specifically related to a kind of the simple and practical new relay protection tester of measuring instrument design in tester inside.
Background technology
The existing guarantor's tester that continues mainly contains two kinds, i.e. microcomputer type tester and common tester.Microcomputer tester principal feature is enough accurately to produce needed electric current and voltage value to carry out the verification of relay equipment by the inner control of microcomputer of tester.Its principle is that the AC power that will import becomes direct current by rectification basically, has system controlled by computer that direct supply is generated needed interchange output by inversion afterwards.
But the shortcoming of microcomputer tester also has a lot, and is heavier such as weight, and operation is difficulty relatively, and price is very expensive at hundreds of thousands, and computer chip breaks down easily, maintenance difficult.
Protect the most frequently used common tester 602 and continue, can finish most verification work, cardinal principle is with transformer the power source transition of importing to be become out-put supply by pressure regulator.
But its shortcoming also is a lot: cost also reaches up to ten thousand, relatively more expensive, transport difficult weight and reach 30KG, there are a lot of functions almost never to use, a lot of resources have been wasted, simultaneously because this tester does not contain measurement instrument,, cause trouble to use so also want external special-purpose current voltmeter to adjust when using.
Summary of the invention
At the problems referred to above, fundamental purpose of the present utility model is to provide that a kind of external connection is few, cost is low, the simple and practical new relay protection tester of measuring instrument design in tester inside.
The utility model solves above-mentioned technical matters by following technical proposals: this guarantor's tester that continues comprises: shell, be installed in the power switch on the shell, be installed in the protective device of housings, be installed in current output terminal above the shell, be installed in voltage output end above the shell, it is characterized in that: the entire circuit of described tester the inside comprises: current output circuit and voltage follower circuit, described entire circuit is connected with the both positive and negative polarity of power supply by power switch, positive pole at power supply, the back of power switch, be serially connected with protective device, the power supply of current output circuit and voltage follower circuit is all drawn from the back of protective device;
Described current output circuit is by pressure regulator, rising current transformer and reometer are formed, one end of described pressure regulator is connected with protective device, the other end is connected with the switch terminals of power cathode, the tap terminals of described pressure regulator links to each other with an end of primary winding of described rising current transformer, the other end of primary winding of described rising current transformer links to each other with power cathode, secondary coil one end of described rising current transformer links to each other with reometer, the reometer other end links to each other with a terminal of current output terminal, and another terminal of current output terminal directly links to each other with the secondary coil other end of rising current transformer;
Described voltage follower circuit; by the voltage output transformer; switch and voltage table are formed; wherein the end away from positive source links to each other in primary winding one end of voltage output transformer and the protective device; the other end links to each other with power cathode; be provided with some taps on the inferior coil of described voltage output transformer, switch is the changing of transformation output voltage between tap, shunt voltage table between voltage output end.
Wherein, described some taps are three taps, are respectively the 50V shelves when switch connects different tap when changeing described changing, 100V shelves and no-voltage output shelves.
Wherein, described switch is a single pole three throw switch.
Wherein, described power switch is an Illuminated Switch.
Wherein, described protective device is a fuse.
Wherein, be connected to checkout line behind described current terminal and the voltage terminal respectively, described checkout line connects calibration equipment.
The utlity model has following beneficial effect: the new relay protection tester that the utility model provides has following advantage:
1. on the basis that guarantees practicality, must simplify instruments design, can finish function, have very high efficient again;
2. measuring instrument is designed in tester inside;
3. has reliable protective measure;
4. reduced the wiring of test external loop;
5. when the little electric current of output, utilize output transformer to stablize output.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.Fig. 1 is circuit theory diagrams of the present utility model, and in the drawings: 1 is Illuminated Switch, and 2 is fuse, and 3 is pressure regulator, and 4 is reometer, and 5 is rising current transformer, and 6 is single pole three throw switch, and 7 is the voltage output transformer, and 8 is voltage table.
This continues and protects tester and comprise: shell, be installed in Illuminated Switch 1 on the shell, be installed in housings fuse 2, be installed in current output terminal above the shell, be installed in voltage output end above the shell, the entire circuit of this tester the inside comprises: current output circuit and voltage follower circuit, described entire circuit is connected with the both positive and negative polarity of power supply by Illuminated Switch 1, positive pole at power supply, the back of Illuminated Switch 1, be serially connected with the fuse 2 of protection entire circuit, the power supply of current output circuit and voltage follower circuit is all drawn from the back of fuse 2;
Current output circuit is by pressure regulator 3, rising current transformer 5 and reometer 4 are formed, one end of this pressure regulator 3 is connected with fuse 2, the other end is connected with the switch terminals of power cathode, the tap terminals of this pressure regulator 3 links to each other with an end of primary winding of rising current transformer 5, the other end of primary winding of rising current transformer 5 links to each other with power cathode, secondary coil one end of rising current transformer 5 links to each other with reometer 4, reometer 4 other ends link to each other with a terminal of current output terminal, and another terminal of current output terminal directly links to each other with the secondary coil other end of rising current transformer 5;
Voltage follower circuit, by voltage output transformer 7, single pole three throw switch 6 and voltage table 8 are formed, wherein the end away from positive source links to each other in primary winding one end of voltage output transformer 7 and the protective device, the other end links to each other with power cathode, on the inferior coil of described voltage output transformer, be provided with three taps, single pole three throw switch 6 is the changing of transformation output voltage between tap, when connecing different tap, single pole three throw switch 6 is respectively the 50V shelves when changeing, 100V shelves and no-voltage output shelves; Shunt voltage table between voltage output end.
Behind current terminal and voltage terminal, connect checkout line respectively, open Illuminated Switch 1, regulate pressure regulator 3, it on the shell of this utility model a knob, regulate this knob, realize changing electric current by changing voltage, rising current transformer 5 further amplifies the electric current of pressure regulator 3 outputs, the output of Control current, concrete numerical value can directly be read by reometer 4,7 in voltage output transformer can realize that fixed voltage is the output of 50V and 100V, for the verification watt-hour meter provides operating voltage, connects this tester of calibration equipment behind the checkout line and just can work.
Preferably, each technical indicator of this tester can be a fuse 2: electric current 1A; Rising current transformer 5: power 50W, no-load voltage ratio 220/10; Voltage output transformer 7: power 10W, no-load voltage ratio 220/100/50; Reometer 4: range 0-10A; Voltage table 8: range 0-100V.
According to new relay protection checking apparatus of the present utility model, on the basis that guarantees practicality, measuring instrument designs in calibration equipment inside, can must simplify instruments design thus; Has reliable protective measure; Reduced the wiring of test external loop; When the little electric current of output, can utilize output transformer to stablize output.Efficiently reduce the cost simultaneously.
Claims (6)
1, a kind of new relay protection tester, described tester comprises: shell, be installed in the power switch on the shell, be installed in the protective device of housings, be installed in current output terminal above the shell, be installed in voltage output end above the shell, it is characterized in that: the entire circuit of described tester the inside comprises: current output circuit and voltage follower circuit, described entire circuit is connected with the both positive and negative polarity of power supply by power switch, positive pole at power supply, the back of power switch, be serially connected with protective device, the power supply of current output circuit and voltage follower circuit is all drawn from the back of protective device;
Described current output circuit is by pressure regulator, rising current transformer and reometer are formed, one end of described pressure regulator is connected with protective device, the other end is connected with the switch terminals of power cathode, the tap terminals of described pressure regulator links to each other with an end of primary winding of described rising current transformer, the other end of primary winding of described rising current transformer links to each other with power cathode, secondary coil one end of described rising current transformer links to each other with reometer, the reometer other end links to each other with a terminal of current output terminal, and another terminal of current output terminal directly links to each other with the secondary coil other end of rising current transformer;
Described voltage follower circuit; by the voltage output transformer; switch and voltage table are formed; wherein the end away from positive source links to each other in primary winding one end of voltage output transformer and the protective device; the other end links to each other with power cathode; be provided with some taps on the inferior coil of described voltage output transformer, switch is the changing of transformation output voltage between tap, shunt voltage table between voltage output end.
2, new relay protection tester according to claim 1 is characterized in that: described some taps are three taps, are respectively the 50V shelves when described switch connects different tap, 100V shelves and no-voltage output shelves.
3, new relay protection tester according to claim 1 is characterized in that: described switch is a single pole three throw switch.
4, new relay protection tester according to claim 1 is characterized in that: described power switch is an Illuminated Switch.
5, new relay protection tester according to claim 1 is characterized in that: described protective device is a fuse.
6, according to each described new relay protection tester of claim 1-5, it is characterized in that: be connected to checkout line behind described current terminal and the voltage terminal respectively, described checkout line connects calibration equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200702545U CN201429657Y (en) | 2009-04-13 | 2009-04-13 | Novel relaying check meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200702545U CN201429657Y (en) | 2009-04-13 | 2009-04-13 | Novel relaying check meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201429657Y true CN201429657Y (en) | 2010-03-24 |
Family
ID=42033396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200702545U Expired - Lifetime CN201429657Y (en) | 2009-04-13 | 2009-04-13 | Novel relaying check meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201429657Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587153A (en) * | 2009-04-13 | 2009-11-25 | 上海市电力公司 | New relay protection checking apparatus |
-
2009
- 2009-04-13 CN CN2009200702545U patent/CN201429657Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587153A (en) * | 2009-04-13 | 2009-11-25 | 上海市电力公司 | New relay protection checking apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100324 |