CN213069002U - Detection circuit of heavy current switch - Google Patents
Detection circuit of heavy current switch Download PDFInfo
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- CN213069002U CN213069002U CN202021631906.0U CN202021631906U CN213069002U CN 213069002 U CN213069002 U CN 213069002U CN 202021631906 U CN202021631906 U CN 202021631906U CN 213069002 U CN213069002 U CN 213069002U
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Abstract
The utility model relates to a detection circuit of a heavy current switch, which comprises a switch module, three voltage regulators and three current rising devices in one-to-one correspondence with the voltage regulators; the switch module is provided with three input ends and three output ends, the three input ends of the switch module are respectively connected with A, B, C end lines of the three-phase circuit, and the switch module controls A, B, C three paths of the three-phase circuit to be simultaneously switched on or switched off; the voltage regulators are respectively provided with two input ends and two output ends, the two input ends of each voltage regulator are respectively connected with the two output ends of the switch module, and the three voltage regulating circuits respectively regulate three line voltages of the three-phase circuit; the current rising device is respectively provided with two input ends and two output ends, the two input ends of the current rising device are respectively connected with the two output ends of the corresponding voltage regulators, and the output ends of the current rising device are both connected with the tested object; the utility model discloses can provide the heavy current to the tested article to only use the voltage regulator to adjust, simple structure, it is convenient, high-efficient to use.
Description
Technical Field
The utility model relates to a technical field of switch combined test system especially relates to a detection circuitry of heavy current switch.
Background
The switch comprehensive test system is necessary equipment for a large-current place required in debugging in the power and electrical industry, and the device has the characteristics of convenience in use and maintenance, superior performance, safety and reliability in use, attractive appearance and structure, firmness and durability, convenience in movement and the like; the large current can be output for a long time, and the maximum value can be continuously output for a short time. And testing switches, circuit breakers, mutual inductors, alternating current contactors, protection circuits and the like. The device is a necessary device for power supply enterprises, large-scale factories, metallurgy, power plants, railways and other departments which need power detection.
The utility model discloses an only adopt induction voltage regulator's combined test system, replaced the regulative mode of traditional induction voltage regulator and converter, make the test system structure simplified by a wide margin, use more convenient, high-efficient
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem who exists among the prior art, provide a detection circuitry of heavy current switch, the structure is simplified, and is convenient to use, high-efficient.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a detection circuit of a high-current switch comprises a switch module, three voltage regulators and three current boosters in one-to-one correspondence with the voltage regulators;
the switch module is provided with three input ends and three output ends, the three input ends of the switch module are respectively connected with A, B, C terminal lines of the three-phase circuit, and the switch module controls A, B, C three paths of the three-phase circuit to be simultaneously switched on or switched off;
the three voltage regulators are respectively provided with two input ends and two output ends, the two input ends of each voltage regulator are respectively connected with the two output ends of the switch module, and the three voltage regulating circuits respectively regulate three line voltages of the three-phase circuit;
the current rising device is respectively provided with two input ends and two output ends, the two input ends of the current rising device are respectively connected with the two output ends of the voltage regulator, and the output ends of the current rising device are connected with a tested object.
The utility model has the advantages that: the utility model discloses can provide the heavy current to the tested article to only use the voltage regulator to adjust, simple structure, it is convenient, high-efficient to use.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the detection circuit further comprises a voltage detection device and a first current detection device;
the voltage detection device is provided with three measuring ends, and the three measuring ends of the voltage detection device are respectively connected with the output ends of the three voltage regulators;
the first current detection device is provided with three measuring coils, and the three measuring coils of the first current detection device are respectively arranged at three output ends of the voltage regulator.
Further, the detection circuit further comprises a second current detection device; the second current detection device is provided with three measuring coils, and the three measuring coils of the second current detection device are respectively arranged at the output ends of the three current boosters.
Further, the detection circuit further comprises a capacitance compensation device, and the capacitance compensation device is arranged between the switch module and the voltage regulator.
Further, the capacitance compensation device comprises a capacitance compensation cabinet, a capacitance compensation controller and three compensation coils;
the three compensation coils are respectively arranged in A, B, C three paths of the three-phase circuit, and two ends of each compensation coil are connected with the capacitance compensation controller;
the capacitance compensation controller and the capacitance compensation cabinet are connected with A, B, C three paths of the three-phase circuit, and the capacitance compensation controller controls the capacitance compensation cabinet to switch the compensation capacitors in groups, so that reactive current of A, B, C three paths of the three-phase circuit is compensated.
Further, the switch module comprises a manual switch KK1 and an automatic switch KM2, wherein the manual switch KK1 and the automatic switch KK2 are connected in series.
Drawings
Fig. 1 is a schematic structural diagram of the detection circuit of the heavy current switch of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises a switch module, 2, a capacitance compensation device, 21, a capacitance compensation cabinet, 22, a capacitance compensation controller, 3, a voltage detection device, 4, a first current detection device, 5 and a second current detection device.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
A detection circuit of a large-current switch comprises a switch module 1, a capacitance compensation device 2, voltage regulators 1T-3T, current boosters 4T-6T, a voltage detection device 3, a first current detection device 4 and a second current detection device 5. The voltage regulators 1T to 3T are all induction voltage regulators. The three-phase circuit for powering the detection circuit of this embodiment is in the form of a three-phase four-wire connection comprising A, B, C, N four terminal wires.
The switch circuit 1 comprises a manual switch KK1 and an automatic switch KM2, wherein the manual switch KK1 and the automatic switch KK2 are connected in series. The manual switch KK1 has three inputs and three outputs, and the three inputs of the manual switch KK1 are connected to A, B, C terminal lines of the three-phase circuit, respectively. The automatic switch KM2 has two inputs and two outputs, and the three inputs of the automatic switch KM2 intercept the three outputs of the manual switch KK1, respectively. The manual switch KK1 and the automatic switch KM2 control the A, B, C three paths of the three-phase circuit to be simultaneously switched on or off. When and only when the manual switch KK1 and the automatic switch KM2 are all closed, A, B, C three paths of the three-phase circuit are simultaneously turned on or off. Manual switch KK1 needs the tester manual closure, and automatic switch KM2 needs to pass through its closure of control system automatic control, through establishing ties manual switch and automatic switch KM2, can prevent the detection circuit mistake of this embodiment and start.
The voltage regulators 1T to 3T are respectively provided with two input ends and two output ends, and the two input ends of the voltage regulators 1T to 3T are respectively connected with two output ends of the automatic switch KM 2. The voltage regulating circuits 1T-3T respectively regulate three line voltages of the three-phase circuit.
The current boosters 4T to 6T each have two input terminals and two output terminals. Two input ends of the current booster 4T are connected with two output ends of the voltage regulator 4T; two input ends of the current booster 5T are connected with two output ends of the voltage regulator 5T; two input ends of the current booster 6T are connected with two output ends of the voltage regulators 4T-6T. The output ends of the current boosters 4T-6T are all connected with a tested object, and the current boosters 4T-6T output large current to the tested object.
The capacitance compensation device 2 is arranged between the switch module 1 and the voltage regulators 1T-3T. The capacitance compensation device 2 includes a capacitance compensation cabinet 21, a capacitance compensation controller 22, and compensation coils 7TA to 9 TA. The compensation coils 7TA to 9TA are respectively arranged in A, B, C three paths of the three-phase circuit, and two ends of the compensation coils 7TA to 9TA are connected with the capacitance compensation controller. The capacitance compensation controller 2 and the capacitance compensation cabinet 1 are both connected with A, B, C three paths of three-phase circuits, and the capacitance compensation controller 2 controls the capacitance compensation cabinet 1 to switch the compensation capacitors in groups, so that reactive currents of A, B, C three paths of three-phase circuits are compensated.
The voltage detection device 3 has three measuring ends, and the three measuring ends of the voltage detection device 3 are respectively connected with the output ends of the voltage regulators 1T-3T. The first current detection device 4 has measurement coils 1TA to 3TA, and the measurement coils 1TA to 3TA of the first current detection device 4 are respectively provided at respective output terminals of the voltage regulators 1T to 3T.
The voltage detection device 3 measures voltage signals at the output ends of the voltage regulators 1T-3T, the first current detection device 4 measures current signals at the output ends of the voltage regulators 1T-3T, the voltage and current signals are converted into RS/485 signals through the digital quantity sensor and then enter the controller, protection setting is carried out in the controller according to rated voltage and current values of the voltage regulators 1T-3T, and when the voltage signals or the current signals are overlarge, the automatic switch KM2 is automatically closed.
The second current detection device 5 has measurement coils 4TA to 6TA, and the three measurement coils 4TA to 6TA of the second current detection device 5 are provided at respective output terminals of the current boosters 4T to 6T. The second current detection device 5 measures current signals at the output terminals of the current boosters 4T to 6T. The current signal enters the controller through the conversion of the digital quantity sensor, then protection setting is carried out in the controller according to the test current value, and when the current signal is too large, the automatic switch KM2 is automatically closed.
The utility model discloses can provide the heavy current to the tested article to only use the voltage regulator to adjust, simple structure, it is convenient, high-efficient to use.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The detection circuit of the heavy current switch is characterized by comprising a switch module, three voltage regulators and three current boosters in one-to-one correspondence with the voltage regulators;
the switch module is provided with three input ends and three output ends, the three input ends of the switch module are respectively connected with A, B, C terminal lines of the three-phase circuit, and the switch module controls A, B, C three paths of the three-phase circuit to be simultaneously switched on or switched off;
the three voltage regulators are respectively provided with two input ends and two output ends, the two input ends of each voltage regulator are respectively connected with the two output ends of the switch module, and the three voltage regulating circuits respectively regulate three line voltages of the three-phase circuit;
the current rising device is respectively provided with two input ends and two output ends, the two input ends of the current rising device are respectively connected with the two output ends of the voltage regulator, and the output ends of the current rising device are connected with a tested object.
2. A high current switch detection circuit as claimed in claim 1, wherein said detection circuit further comprises voltage detection means and first current detection means;
the voltage detection device is provided with three measuring ends, and the three measuring ends of the voltage detection device are respectively connected with the output ends of the three voltage regulators;
the first current detection device is provided with three measuring coils, and the three measuring coils of the first current detection device are respectively arranged at three output ends of the voltage regulator.
3. A detection circuit for a high current switch according to claim 1, further comprising a second current detection means; the second current detection device is provided with three measuring coils, and the three measuring coils of the second current detection device are respectively arranged at the output ends of the three current boosters.
4. A circuit for testing a high current switch as claimed in claim 1, wherein said circuit further comprises a capacitance compensation device disposed between said switch module and said voltage regulator.
5. The detection circuit of a large current switch according to claim 4, wherein the capacitance compensation device comprises a capacitance compensation cabinet, a capacitance compensation controller and three compensation coils;
the three compensation coils are respectively arranged in A, B, C three paths of the three-phase circuit, and two ends of each compensation coil are connected with the capacitance compensation controller;
the capacitance compensation controller and the capacitance compensation cabinet are connected with A, B, C three paths of the three-phase circuit, and the capacitance compensation cabinet controls the capacitance compensation cabinet to switch the compensation capacitors in groups, so that the reactive current of A, B, C three paths of the three-phase circuit is compensated.
6. The detection circuit for the high-current switch as claimed in claim 1, wherein the switch module comprises a manual switch KK1 and an automatic switch KM2, and the manual switch KK1 and the automatic switch KK2 are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021631906.0U CN213069002U (en) | 2020-08-07 | 2020-08-07 | Detection circuit of heavy current switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021631906.0U CN213069002U (en) | 2020-08-07 | 2020-08-07 | Detection circuit of heavy current switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213069002U true CN213069002U (en) | 2021-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021631906.0U Active CN213069002U (en) | 2020-08-07 | 2020-08-07 | Detection circuit of heavy current switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213069002U (en) |
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2020
- 2020-08-07 CN CN202021631906.0U patent/CN213069002U/en active Active
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