CN220367356U - Device for detecting correctness of installation phase sequence of secondary fusion circuit breaker - Google Patents
Device for detecting correctness of installation phase sequence of secondary fusion circuit breaker Download PDFInfo
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- CN220367356U CN220367356U CN202321996838.1U CN202321996838U CN220367356U CN 220367356 U CN220367356 U CN 220367356U CN 202321996838 U CN202321996838 U CN 202321996838U CN 220367356 U CN220367356 U CN 220367356U
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- circuit breaker
- phase sequence
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- 238000000819 phase cycle Methods 0.000 title claims abstract description 25
- 230000004927 fusion Effects 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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Abstract
The utility model discloses a phase sequence correctness detection device for installation of a secondary fusion breaker, which comprises a unidirectional intelligent ammeter for detecting the phase sequence of the secondary fusion breaker, wherein the secondary fusion breaker is connected with a high-voltage bus, the secondary fusion breaker comprises a PT transformer and a breaker main body, the input end of the high-voltage bus is connected with a transformer, the transformer is connected with a first grounding wire, the output end of the breaker main body is connected with an electrical appliance load, the electrical appliance load is connected with a second grounding wire, a relay is arranged between the first grounding wire and the second grounding wire, and the control end of the relay is electrically connected with the unidirectional intelligent ammeter. The intelligent power supply device can be matched with the PT transformer for supplying power, the single-phase intelligent ammeter can detect the correctness of the phase sequence of the voltage current signal of the PT at the incoming line side, namely, whether the phase sequence of the circuit breaker is connected with errors or not can be detected, reworking can be performed in time, the failure rate of the main body of the circuit breaker is reduced, and the safety of a circuit is protected.
Description
Technical Field
The utility model relates to a phase sequence detection device, in particular to a phase sequence correctness detection device for installation of a secondary fusion circuit breaker.
Background
In the process of electricity utilization in production and life, when three-phase loads on the circuit breaker are unbalanced, the transformer is in an asymmetric running state. Resulting in increased losses of the transformer (including no-load losses and load losses). In addition, unbalanced three-phase load operation can cause zero sequence current of the transformer to be overlarge, local metal parts are heated up and increased, and even the transformer can be burnt. Unbalance among the phases can also lead to shortening of the service life of the electric equipment, acceleration of the replacement frequency of equipment parts and increase of the maintenance cost of the equipment. The circuit breaker allows the margin of current to be reduced, and overload and short circuit phenomena are likely to occur when the load is changed or alternated. An excessive unbalanced current flows in the neutral line, resulting in thickening of the neutral line.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and provides a device for detecting the correctness of the installation phase sequence of a secondary fusion circuit breaker.
The utility model solves the technical problems by adopting the technical scheme that: the utility model provides a secondary fuses circuit breaker installation phase sequence correctness detection device, is including being used for detecting the one-way smart electric meter of secondary fuse circuit breaker phase sequence, and secondary fuses circuit breaker connects high-voltage bus, and secondary fuses circuit breaker includes PT mutual-inductor and circuit breaker main part, high-voltage bus the circuit breaker main part PT mutual-inductor with one-way smart electric meter electric connection in proper order, high-voltage bus's input connection transformer, transformer connection first earth connection, the electrical apparatus load is connected to the output of circuit breaker main part, and the electrical apparatus load is connected the second earth connection, is equipped with the relay between first earth connection and the second earth connection, and the control end and the one-way smart electric meter electric connection of relay.
Further perfection, one-way smart electric meter is through detecting extension cable and aviation plug connection PT mutual-inductor, detects the extension cable and adopts 6 core shielding 1.5 square millimeter cable, detects the phase sequence correctness of the voltage current signal of extension cable's inlet wire side PT that is used for the circuit breaker main part at ground detection.
Further perfecting, the breaker main body is provided with a TTU monitoring terminal connected with the unidirectional intelligent ammeter, and the TTU monitoring terminal is used for outputting Ia, ib, ic, uab, P, Q, COS phi signals.
Further perfecting, a leakage transformer is arranged between the breaker main body and the electric appliance load, and the leakage transformer is electrically connected with the unidirectional intelligent ammeter.
Further perfecting, the unidirectional intelligent ammeter is connected with an oscilloscope or an upper computer, and the upper computer is in communication connection with the transformer.
The beneficial effects of the utility model are as follows: the intelligent power supply device can be matched with the PT transformer for supplying power, the single-phase intelligent ammeter can detect the correctness of the phase sequence of the voltage current signal of the PT at the incoming line side, namely, whether the phase sequence of the circuit breaker is connected with errors or not can be detected, reworking can be performed in time, the failure rate of the main body of the circuit breaker is reduced, and the safety of a circuit is protected.
Drawings
FIG. 1 is a functional block diagram of a circuit of the present utility model;
FIG. 2 is a schematic diagram of the appearance of a ZW32-12 circuit breaker;
reference numerals illustrate: 1. inlet wire end, 2, outlet wire end, 3, PT mutual inductor, 4, leakage mutual inductor.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
referring to the drawings: the utility model provides a secondary fuses circuit breaker installation phase sequence correctness detection device in this embodiment, including the unidirectional intelligent ammeter that is used for detecting secondary fuses circuit breaker phase sequence, the secondary fuses circuit breaker connects high-voltage bus, and the secondary fuses circuit breaker includes PT mutual-inductor and circuit breaker main part, high-voltage bus the circuit breaker main part PT mutual-inductor with unidirectional intelligent ammeter electric connection in proper order, high-voltage bus's input connection transformer, transformer connection first earth connection, the output of circuit breaker main part is connected the electrical load, and the electrical load is connected the second earth connection, is equipped with the relay between first earth connection and the second earth connection, the control end and the unidirectional intelligent ammeter electric connection of relay. When the intelligent power supply works normally, the high-voltage bus is electrified, the breaker main body is conducted, the breaker main body outputs electric energy to an electric appliance load, and the unidirectional intelligent ammeter of the PT transformer low-voltage load provides voltage. When any one of the first grounding wire and the second grounding wire generates a grounding fault, such as when the line grounding wire is disconnected and is in single-phase grounding, three-phase voltage imbalance can be caused, and the unidirectional intelligent ammeter controls the relay to be conducted after detecting phase sequence imbalance, so that the first grounding wire and the second grounding wire are communicated with each other to be improved, and charges are scattered and connected at different grounding points, so that the problem that imbalance degree seriously exceeds standard caused by concentrated grounding is solved. The load safety of the electric appliance is improved.
The unidirectional smart meter adopts the prior art product (CN 201610993457.6 single-phase smart meter). The unidirectional intelligent ammeter is connected with the PT transformer through detecting an extension cable and an aviation plug, the 6-core shielding 1.5 square millimeter cable is adopted for detecting the extension cable, and the phase sequence correctness of a voltage and current signal of the incoming line side PT of the breaker main body detected on the ground is detected. The circuit breaker main body is provided with a TTU monitoring terminal connected with the unidirectional intelligent ammeter, and the TTU monitoring terminal is used for outputting Ia, ib, ic, uab, P, Q, COS phi signals. And a leakage transformer is arranged between the breaker main body and the electric appliance load and is electrically connected with the unidirectional intelligent ammeter.
The unidirectional intelligent ammeter is connected with an oscilloscope or an upper computer, and the upper computer is in communication connection with the transformer. The staff can observe the phase current waveform clearly through the oscilloscope, so that the detection accuracy is ensured. After the upper computer receives the voltage data, an instruction is sent to a controller of the transformer through the communication equipment, the gear of the transformer is timely adjusted, and the electricity utilization efficiency is improved.
While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.
Claims (5)
1. The utility model provides a secondary fuses circuit breaker installation phase sequence correctness detection device, includes the one-way smart electric meter that is used for detecting secondary to fuse circuit breaker phase sequence, and high-voltage bus is connected to secondary fusion circuit breaker, and secondary fuses circuit breaker and includes PT mutual-inductor and circuit breaker main part, its characterized in that: the high-voltage bus is connected with the circuit breaker main body, the PT transformer is connected with the unidirectional intelligent ammeter in sequence electrically, the input end of the high-voltage bus is connected with the transformer, the transformer is connected with the first grounding wire, the output end of the circuit breaker main body is connected with the electric appliance load, the electric appliance load is connected with the second grounding wire, a relay is arranged between the first grounding wire and the second grounding wire, and the control end of the relay is connected with the unidirectional intelligent ammeter electrically.
2. The device for detecting the correctness of the installation phase sequence of the secondary fusion circuit breaker according to claim 1, wherein the device comprises the following components: the unidirectional intelligent ammeter is connected with the PT transformer through detecting an extension cable and an aviation plug, the 6-core shielding 1.5 square millimeter cable is adopted for detecting the extension cable, and the phase sequence correctness of a voltage and current signal of the incoming line side PT of the breaker main body detected on the ground is detected.
3. The device for detecting the correctness of the installation phase sequence of the secondary fusion circuit breaker according to claim 1, wherein the device comprises the following components: the circuit breaker main body is provided with a TTU monitoring terminal connected with the unidirectional intelligent ammeter, and the TTU monitoring terminal is used for outputting Ia, ib, ic, uab, P, Q, COS phi signals.
4. The device for detecting the correctness of the installation phase sequence of the secondary fusion circuit breaker according to claim 1, wherein the device comprises the following components: and a leakage transformer is arranged between the breaker main body and the electric appliance load and is electrically connected with the unidirectional intelligent ammeter.
5. The device for detecting the correctness of the installation phase sequence of the secondary fusion circuit breaker according to claim 1, wherein the device comprises the following components: the unidirectional intelligent ammeter is connected with an oscilloscope or an upper computer, and the upper computer is in communication connection with the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321996838.1U CN220367356U (en) | 2023-07-27 | 2023-07-27 | Device for detecting correctness of installation phase sequence of secondary fusion circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321996838.1U CN220367356U (en) | 2023-07-27 | 2023-07-27 | Device for detecting correctness of installation phase sequence of secondary fusion circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220367356U true CN220367356U (en) | 2024-01-19 |
Family
ID=89513348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321996838.1U Active CN220367356U (en) | 2023-07-27 | 2023-07-27 | Device for detecting correctness of installation phase sequence of secondary fusion circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220367356U (en) |
-
2023
- 2023-07-27 CN CN202321996838.1U patent/CN220367356U/en active Active
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