CN210401547U - Relay protection tester - Google Patents
Relay protection tester Download PDFInfo
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- CN210401547U CN210401547U CN201920963714.0U CN201920963714U CN210401547U CN 210401547 U CN210401547 U CN 210401547U CN 201920963714 U CN201920963714 U CN 201920963714U CN 210401547 U CN210401547 U CN 210401547U
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Abstract
The utility model discloses a relay protection tester relates to relay protection device test instrument technical field. The first three-phase four-wire air switch is a main switch of the tester and controls the relay protection tester to be turned on or off. By closing the single-phase air switch, alternating voltage and current are rectified by the bridge rectifier circuit, and output direct voltage and current are monitored by the first voltmeter connected in parallel at the output end of the rectifier bridge. The output three-phase alternating current and three-phase alternating voltage are controlled by adjusting the three-phase voltage regulator. By closing the second three-phase four-wire air switch, the output three-phase ac voltage is measured by a second voltmeter connected to the output of the second three-phase four-wire air switch. By closing the third three-phase four-wire air switch, the output current of the voltage regulator is increased to a large current through the current booster, and the output three-phase alternating current is measured through an ammeter connected with the current booster. The testing requirement of the simple relay protection device is met, and the device is simple in structure, low in cost and easy to maintain.
Description
Technical Field
The utility model belongs to the technical field of relay protection test instrument, especially, relate to a relay protection tester.
Background
The existing relay protection testers are all microcomputer type relay protection testers, have the advantages of capability of outputting multi-path alternating current and direct current, multiple functions, high testing precision and obvious advantages when used for testing complex relay protection devices. But the price is high, the structure is complex and the maintenance is difficult. For users, only a microcomputer protection tester can be purchased for debugging some simple relay protection devices, but the purchase and use costs of the microcomputer protection tester are high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a relay protection tester to the debugging of having overcome current simple relay protection device can only purchase computer protection tester, the complicated, the higher shortcoming of cost of circuit.
In order to achieve the above object, the utility model provides a relay protection tester, include:
the tester plug is a three-phase four-wire plug;
the input end of the first three-phase four-wire air switch is connected with the tester plug;
the input end of the three-phase voltage regulator is connected with the output end of the first three-phase four-wire air switch and is used for controlling three-phase alternating current and three-phase alternating voltage;
the single-phase air switch is connected in parallel to one phase line and a zero line between the first three-phase four-wire air switch and the three-phase voltage regulator;
the input end of the bridge rectifier circuit is connected with the output end of the single-phase air switch, and the output end of the bridge rectifier circuit is connected with a first voltmeter in parallel and used for measuring the output direct-current voltage;
the input end of the second three-phase four-wire air switch is connected with the output end of the three-phase voltage regulator;
the voltage detection device is connected with the output end of the second three-phase four-wire air switch and is used for measuring the voltage output after the control of the three-phase voltage regulator;
the input end of the third three-phase four-wire air switch is connected with the output end of the three-phase voltage regulator; and
and the current detection device is connected with the output end of the third three-phase four-wire air switch and is used for measuring the current output after the three-phase voltage regulator is controlled.
Furthermore, the voltage monitoring device is a second voltmeter, a second voltmeter is connected in parallel between two adjacent phase lines in the a/b/c phase line of the output end of the second three-phase four-wire air switch, and a second voltmeter is connected in parallel between one phase line in the a/b/c phase line and the zero line and is used for measuring the output voltage of the three-phase voltage regulator.
Furthermore, the current monitoring device comprises a current booster and an ammeter, wherein one current booster is connected in parallel between each phase line and a zero line at the output end of the third three-phase four-wire air switch, and one output end of each current booster is connected in series with one ammeter for measuring the output current of the current booster.
Further, the bridge rectifier circuit comprises a control transformer and four diodes, and the four diodes are respectively: a first diode, a second diode, a third diode and a fourth diode; the cathode of the first diode is connected with the cathode of the second diode and then connected with the anode of the first voltmeter; the anode of the third diode is connected with the anode of the fourth diode and then connected with the cathode of the first voltmeter; the anode of the first diode is connected with the cathode of the fourth diode and then connected with one end of the secondary of the control transformer; the anode of the second diode is connected with the cathode of the third diode and then connected with the other end of the secondary of the control transformer; the primary of the control transformer is connected with the output end of the single-phase air switch.
Further, still include the box, first three-phase four-wire air switch, second three-phase four-wire air switch, third three-phase four-wire air switch, three-phase voltage regulator, single-phase air switch, bridge rectifier circuit, voltage monitoring device and current monitoring device are integrated on the box, the tester plug passes the box surface and extends the box.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a relay protection tester, which is powered on by closing a first three-phase four-wire air switch; the single-phase air switch is switched on, the bridge rectifier circuit is powered on, alternating current voltage and current are rectified by the bridge rectifier circuit to obtain direct current and voltage, and the output direct current voltage is measured by the first voltmeter connected to the output end of the rectifier bridge in parallel, so that the condition of the output direct current voltage can be monitored. The output three-phase alternating current and three-phase alternating voltage are controlled by adjusting the three-phase voltage regulator, and the output three-phase alternating voltage is measured by a voltmeter connected to the second three-phase four-wire air switch by closing the second three-phase four-wire air switch. By closing the third three-phase four-wire air switch, the current output by the voltage regulator is converted into a large current through the current booster, and the output three-phase alternating current is measured through the ammeter connected with the current booster. Relay protection tester accessible three-phase voltage regulator control output three-phase alternating current and three-phase alternating voltage all the way, and can provide output direct current voltage all the way, satisfy simple relay protection device test's requirement, and simple structure, low cost, maintenance are easy.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a circuit diagram of a relay protection tester of the present invention;
wherein: XP-tester plug, QF 1-first three-phase four-wire air switch, TYB-three-phase voltage regulator, QF-single-phase air switch, V1-first voltmeter, 1-bridge rectifier circuit, 2-voltage monitoring device, 3-current monitoring device, V2-second voltmeter, TC-control transformer, VD 1-first diode, VD 2-second diode, VD 3-third diode, VD 4-fourth diode, QF 2-second three-phase four-wire air switch, QF 3-third three-phase four-wire air switch, TA-current booster, A-ammeter.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in figure 1, the utility model provides a relay protection tester includes tester plug XP, first three-phase four-wire air switch QF1, second three-phase four-wire air switch QF2, third three-phase four-wire air switch QF3, three-phase voltage regulator TYB, single-phase air switch QF, bridge rectifier circuit 1, first voltmeter V1, voltage monitoring device 2 and current monitoring device 3. The voltage monitoring device 2 is a second voltmeter V2, and the current monitoring device 3 includes a current booster TA and an ammeter a.
The test instrument plug XP adopts a 380V three-phase four-wire plug; the tester plug XP is connected with the input of a first three-phase four-wire air switch QF1, and the output of the first three-phase four-wire air switch QF1 is connected with the input of a three-phase voltage regulator TYB. The single-phase air switch QF is connected in parallel between one phase line and a zero line between the three-phase voltage regulator TYB and the first three-phase four-wire air switch QF1, the output end of the single-phase air switch QF is connected in parallel with the input end of the bridge rectifier circuit 1, and the output end of the bridge rectifier circuit 1 is connected in parallel with the first voltmeter V1 and used for measuring the output direct-current voltage.
The bridge rectifier circuit 1 comprises a control transformer TC and four diodes, wherein the four diodes are respectively as follows: the first diode VD1, the second diode VD2, the third diode VD3 and the fourth diode VD 4; the negative electrode of the first diode VD1 is connected with the negative electrode of the second diode VD2 and then is connected with the positive end of the first voltmeter V1; the anode of the third diode VD3 is connected with the anode of the fourth diode VD4 and then is connected with the negative end of the first voltmeter V1; the anode of the first diode VD1 is connected with the cathode of the fourth diode VD4 and then is connected with one end of the secondary side of the control transformer TC; the anode of the second diode VD2 is connected with the cathode of the third diode VD3 and then is connected with the other end of the secondary side of the control transformer TC; the primary of the control transformer TC is the input end of the bridge rectifier circuit 1, the negative electrode of the first diode VD1 and the positive electrode of the fourth diode VD4 are the output end of the bridge rectifier circuit 1, the primary of the control transformer TC is connected with the output end of the single-phase air switch QF, and the first voltmeter V1 is connected in parallel with the output end of the bridge rectifier circuit 1.
With reference to fig. 1, the output terminal of the three-phase voltage regulator TYB is connected to the input terminal of the second three-phase four-wire air switch QF2, two adjacent phase lines of the a/b/c phase lines of the output terminal of the second three-phase four-wire air switch QF2 are connected in parallel to form a second voltmeter V2, and one phase line (in this embodiment, the a phase line) of the a/b/c phase lines is connected in parallel to the zero line to form a second voltmeter V2 for measuring the three-phase ac voltage U output by the three-phase voltage regulator TYB after controla、Ub、Uc、Un。
The output end of the three-phase voltage regulator TYB is connected with the input end of a third three-phase four-wire air switch QF3, a current booster TA is connected in parallel between each phase line and the zero line of the output end of the third three-phase four-wire air switch QF3, and an output end of each current booster TA is connected with an ammeter A in series for measuring three-phase alternating current I output by the current booster TA after the three-phase voltage regulator TYB is used for controllinga、Ib、Ic。
In this embodiment, the first three-phase four-wire air switch QF1 is of the type: HDBE-63 residual current circuit breaker, 4P, 40A; the second three-phase four-wire air switch QF2 and the third three-phase four-wire air switch QF3 are HDBE-63 circuit breakers, 3P + N, 40A; the model adopted by the three-phase voltage regulator TYB is TSGC 2J-30; the single-phase air switch QF adopts a model of HDBE-63 breaker, 1P + N, 10A; the model of the control transformer TC is BK-300,220V/220V; the diodes VD1, VD2, VD3 and VD4 adopt the model ZP 5A/1000V; the first voltmeter V1 adopts a DC voltmeter with the model number of 6C2-V and the voltage of 300V; the second voltmeter V2 adopts an alternating-current voltmeter with the model number of 6L2-V, 450V; the ammeter A is an alternating current ammeter with the model number of 6L2-A, 30A.
The relay protection tester also comprises a box body, a first three-phase four-wire air switch QF1, a second three-phase four-wire air switch QF2, a third three-phase four-wire air switch QF3, a three-phase voltage regulator TYB, a single-phase air switch QF, a bridge rectifier circuit 1, a first voltmeter V1, a second voltmeter V2, an ammeter A and a current booster TA are integrated on the box body, and a tester plug XP penetrates through the surface of the box body to extend out of the box body.
It is right the utility model discloses operation method and the theory of operation of relay protection tester carry out the detailed description to make technical staff in the field more understand the utility model discloses:
a tester plug XP is connected into a corresponding 380V three-phase four-wire socket, a first three-phase four-wire air switch QF1 is closed, and alternating current is input into a three-phase voltage regulator TYB. And opening the single-phase air switch QF to electrify the bridge rectifier circuit 1, and monitoring the output direct-current voltage through a first voltmeter V1 connected in parallel at the output end of the rectifier bridge after the single-phase air switch QF is rectified by the bridge rectifier circuit 1.
The output three-phase alternating current and three-phase alternating voltage are controlled by adjusting the three-phase voltage regulator TYB, the second voltmeter V2 connected with the second three-phase four-wire air switch QF2 is electrified by closing the second three-phase four-wire air switch QF2, and the output three-phase alternating voltage U is monitored by the second voltmeter V2a、Ub、Uc、UnAnd the subsequent experiment is convenient. By closing the third three-phase four-wire air switch QF3, the current passes through the current booster TA to convert the small current into large current, and the output three-phase alternating current I is monitored by the ammeter A connected with the current booster TAa、Ib、Ic。
To sum up, the utility model relates to a relay protection tester through three-phase voltage regulator TYB control, three-phase alternating current and three-phase alternating voltage all the way are exported all the way, and can export direct current voltage all the way, have satisfied simple relay protection device test requirement, and simple structure, low cost, maintenance are easy.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or modifications within the technical scope of the present invention, and all should be covered by the scope of the present invention.
Claims (5)
1. A relay protection tester is characterized in that: the method comprises the following steps:
the tester plug is a three-phase four-wire plug;
the input end of the first three-phase four-wire air switch is connected with the tester plug;
the input end of the three-phase voltage regulator is connected with the output end of the first three-phase four-wire air switch and is used for controlling three-phase alternating current and three-phase alternating voltage;
the single-phase air switch is connected in parallel to one phase line and a zero line between the first three-phase four-wire air switch and the three-phase voltage regulator;
the input end of the bridge rectifier circuit is connected with the output end of the single-phase air switch, and the output end of the bridge rectifier circuit is connected with a first voltmeter in parallel and used for measuring the output direct-current voltage;
the input end of the second three-phase four-wire air switch is connected with the output end of the three-phase voltage regulator;
the voltage monitoring device is connected with the output end of the second three-phase four-wire air switch and is used for measuring the voltage output by the three-phase voltage regulator after being controlled;
the input end of the third three-phase four-wire air switch is connected with the output end of the three-phase voltage regulator; and
and the current monitoring device is connected with the output end of the third three-phase four-wire air switch and is used for measuring the current output after the three-phase voltage regulator is controlled.
2. The relay protection tester of claim 1, wherein: the voltage monitoring device is a second voltmeter, a second voltmeter is connected in parallel between two adjacent phase lines in the a/b/c phase line of the output end of the second three-phase four-wire air switch, and a second voltmeter is connected in parallel between one phase line in the a/b/c phase line and the zero line and used for measuring the output voltage of the three-phase voltage regulator.
3. The relay protection tester of claim 1, wherein: the current monitoring device comprises a current rising device and an ammeter, wherein one current rising device is connected between each phase line and a zero line of the output end of the third three-phase four-wire air switch in parallel, and one output end of each current rising device is connected with one ammeter in series and used for measuring the output current of the current rising device.
4. The relay protection tester of claim 1, wherein: the bridge rectifier circuit comprises a control transformer and four diodes, wherein the four diodes are respectively as follows: a first diode, a second diode, a third diode and a fourth diode; the cathode of the first diode is connected with the cathode of the second diode and then connected with the anode of the first voltmeter; the anode of the third diode is connected with the anode of the fourth diode and then connected with the cathode of the first voltmeter; the anode of the first diode is connected with the cathode of the fourth diode and then connected with one end of the secondary of the control transformer; the anode of the second diode is connected with the cathode of the third diode and then connected with the other end of the secondary of the control transformer; the primary of the control transformer is connected with the output end of the single-phase air switch.
5. The relay protection tester of claim 1, wherein: the tester is characterized by further comprising a box body, wherein the first three-phase four-wire air switch, the second three-phase four-wire air switch, the third three-phase four-wire air switch, the three-phase voltage regulator, the single-phase air switch, the bridge rectifier circuit, the voltage monitoring device and the current monitoring device are integrated on the box body, and the tester plug penetrates through the surface of the box body to extend out of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963714.0U CN210401547U (en) | 2019-06-25 | 2019-06-25 | Relay protection tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963714.0U CN210401547U (en) | 2019-06-25 | 2019-06-25 | Relay protection tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210401547U true CN210401547U (en) | 2020-04-24 |
Family
ID=70350693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920963714.0U Expired - Fee Related CN210401547U (en) | 2019-06-25 | 2019-06-25 | Relay protection tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210401547U (en) |
-
2019
- 2019-06-25 CN CN201920963714.0U patent/CN210401547U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20200424 Termination date: 20210625 |