CN206020509U - A kind of capacitance current tacheometer - Google Patents
A kind of capacitance current tacheometer Download PDFInfo
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- CN206020509U CN206020509U CN201621027285.9U CN201621027285U CN206020509U CN 206020509 U CN206020509 U CN 206020509U CN 201621027285 U CN201621027285 U CN 201621027285U CN 206020509 U CN206020509 U CN 206020509U
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- tacheometer
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Abstract
The utility model discloses a kind of capacitance current tacheometer, is related to mine power equipment technical field.A kind of capacitance current tacheometer, the capacitance current tacheometer include and any one earth resistance being conducted of electrical network, ammeter and insulation board；The earth current can be controlled in 4 Amps；On insulation board, its side connects tested phase to the earth resistance, and opposite side is grounded by electric current Table A.The utility model provides a kind of capacitance current tacheometer for quickly effectively measuring.
Description
Technical field
The utility model is related to mine power equipment technical field, more particularly, to a kind of capacitance current tacheometer.
Background technology
《Safety regulations in coal mine》Clear stipulaties：" unbalanced earth fault capacitance current of mine high pressure 6kv electrical networks must not exceed 20A.
Otherwise, it is necessary to take restriction." measuring method of capacitance current can be divided into direct method and indirect method.Measured using direct method
Capacitance current, operates and wiring is cumbersome, and test result is true.For as colliery 6kv power systems, without mains neutral
Point, it is impossible to adopt the additional capacitance method of neutral point as 35kv systems, and be nearest using the method for split-phase outer meeting resistance over the ground
Most scientific, feasible method.
Content of the invention
Technical problem to be solved in the utility model there is provided a kind of capacitance current speed for quickly effectively measuring
Survey instrument.
For achieving the above object, the utility model provides following technical scheme：A kind of capacitance current tacheometer, the electricity
Capacitance current tacheometer includes and any one earth resistance being conducted of electrical network, ammeter and insulation board；The earth current can
To control in 4 Amps；On insulation board, its side connects tested phase to the earth resistance, and opposite side is by electricity
Flow table A is grounded.
Preferably, the earth resistance selects 800-1000 Ω.
A kind of capacitance current tacheometer of the utility model is grounded through additional resistance R and electric current Table A using electrical network is single-phase.Ground connection
Resistance R selects 800-1000 Ω, earth current control in 4 Amps, can obtain electrical network by calculating single-phase directly
Electric current during ground connection.According to test philosophy, the mode of connection that is connected after carrying out parallel connection using resistance again, resistance value is made to reach 800
Ω, capacity reach 6000kw, it is ensured that the smooth development of test.After the completion of resistance welding, by resistance on insulation board, electricity
Resistance device side connects tested phase, and opposite side is grounded by ammeter.After resistor completes, mining area can not affected just
In the case of often powering, the single-phase capacitive earth current of colliery 6kv～10kv power systems is accurately measured, be that colliery restriction is right
Ground capacitance current provides the firsthand data.
Description of the drawings
Fig. 1 is a kind of circuit diagram of capacitance current tacheometer of the utility model.
Specific embodiment
In order to deepen to understanding of the present utility model, the utility model is made further below in conjunction with embodiment and accompanying drawing
Describe in detail, the embodiment is only used for explaining the utility model, does not constitute the restriction to the utility model protection domain.
Kind capacitance current tacheometer as shown in Figure 1, the capacitance current tacheometer include mutually leading with any the one of electrical network
Logical earth resistance, ammeter and insulation board；The earth current can be controlled in 4 Amps；The earth resistance is installed
On insulation board, its side connects tested phase, and opposite side is grounded by electric current Table A.The earth resistance choosing adopted in the present invention
Use 800-1000 Ω.
This capacitance current tacheometer is grounded through additional resistance R and electric current Table A using electrical network is single-phase.Earth resistance R is selected
800-1000 Ω, earth current can be controlled in 4 Amps, by calculating electricity when can obtain that electrical network is single-phase to be directly grounded
Stream.According to test philosophy, the mode of connection that is connected after carrying out parallel connection using resistance again, resistance value is made to reach 800 Ω, capacity reaches
6000kw, it is ensured that the smooth development of test.After the completion of resistance welding, by resistance on insulation board, resistor side connects
Tested phase is connect, opposite side is grounded by ammeter.After resistor completes, can be in the feelings for not affecting mining area normal power supply
The single-phase capacitive earth current of colliery 6kv～10kv power systems under condition, is accurately measured, is that colliery limits capacitive earth current
The firsthand data is provided.
Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area
For personnel, on the premise of design being created without departing from the utility model, can also make some deformations and improvement, these all belong to
In protection domain of the present utility model.
Claims (2)
1. a kind of capacitance current tacheometer, it is characterised in that：The capacitance current tacheometer includes mutually leading with any the one of electrical network
Logical earth resistance, ammeter and insulation board；The earth current can be controlled in 4 Amps；The earth resistance is installed
On insulation board, its side connects tested phase, and opposite side is grounded by electric current Table A.
2. capacitance current tacheometer according to claim 1, it is characterised in that：The earth resistance selects 800-1000
Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621027285.9U CN206020509U (en) | 2016-08-31 | 2016-08-31 | A kind of capacitance current tacheometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621027285.9U CN206020509U (en) | 2016-08-31 | 2016-08-31 | A kind of capacitance current tacheometer |
Publications (1)
| Publication Number | Publication Date |
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| CN206020509U true CN206020509U (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621027285.9U Active CN206020509U (en) | 2016-08-31 | 2016-08-31 | A kind of capacitance current tacheometer |
Country Status (1)
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| CN (1) | CN206020509U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303595A (en) * | 2018-03-14 | 2018-07-20 | 云南电网有限责任公司电力科学研究院 | A kind of neutral point capacitive current testing methods based on alien frequencies phase current, apparatus and system |
| CN108333438A (en) * | 2018-03-14 | 2018-07-27 | 云南电网有限责任公司电力科学研究院 | A kind of test method of capacitance current, apparatus and system |
| CN108535528A (en) * | 2018-03-14 | 2018-09-14 | 云南电网有限责任公司电力科学研究院 | A kind of neutral point capacitive current testing methods based on frequency sweep method, apparatus and system |
| CN108548983A (en) * | 2018-03-14 | 2018-09-18 | 云南电网有限责任公司电力科学研究院 | A kind of test method of capacitance current, apparatus and system |
| CN108548982A (en) * | 2018-03-14 | 2018-09-18 | 云南电网有限责任公司电力科学研究院 | A kind of test method of capacitance current, apparatus and system |
| CN108646125A (en) * | 2018-03-14 | 2018-10-12 | 云南电网有限责任公司电力科学研究院 | A kind of test method of capacitance current, apparatus and system |
| CN110749766A (en) * | 2019-10-29 | 2020-02-04 | 徐州和纬信电科技有限公司 | Capacitance current tester and measuring method thereof |
-
2016
- 2016-08-31 CN CN201621027285.9U patent/CN206020509U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303595A (en) * | 2018-03-14 | 2018-07-20 | 云南电网有限责任公司电力科学研究院 | A kind of neutral point capacitive current testing methods based on alien frequencies phase current, apparatus and system |
| CN108333438A (en) * | 2018-03-14 | 2018-07-27 | 云南电网有限责任公司电力科学研究院 | A kind of test method of capacitance current, apparatus and system |
| CN108535528A (en) * | 2018-03-14 | 2018-09-14 | 云南电网有限责任公司电力科学研究院 | A kind of neutral point capacitive current testing methods based on frequency sweep method, apparatus and system |
| CN108548983A (en) * | 2018-03-14 | 2018-09-18 | 云南电网有限责任公司电力科学研究院 | A kind of test method of capacitance current, apparatus and system |
| CN108548982A (en) * | 2018-03-14 | 2018-09-18 | 云南电网有限责任公司电力科学研究院 | A kind of test method of capacitance current, apparatus and system |
| CN108646125A (en) * | 2018-03-14 | 2018-10-12 | 云南电网有限责任公司电力科学研究院 | A kind of test method of capacitance current, apparatus and system |
| CN108646125B (en) * | 2018-03-14 | 2020-02-07 | 云南电网有限责任公司电力科学研究院 | Method, device and system for testing capacitance current |
| CN108548983B (en) * | 2018-03-14 | 2020-02-07 | 云南电网有限责任公司电力科学研究院 | Method, device and system for testing capacitance current |
| CN108548982B (en) * | 2018-03-14 | 2020-03-10 | 云南电网有限责任公司电力科学研究院 | Method, device and system for testing capacitance current |
| CN108303595B (en) * | 2018-03-14 | 2020-04-10 | 云南电网有限责任公司电力科学研究院 | Capacitive current testing method, device and system based on pilot frequency phase current |
| CN108333438B (en) * | 2018-03-14 | 2020-04-10 | 云南电网有限责任公司电力科学研究院 | Method, device and system for testing capacitance current |
| CN110749766A (en) * | 2019-10-29 | 2020-02-04 | 徐州和纬信电科技有限公司 | Capacitance current tester and measuring method thereof |
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