CN110554286A - Voltage-adjustable insulation detection device - Google Patents
Voltage-adjustable insulation detection device Download PDFInfo
- Publication number
- CN110554286A CN110554286A CN201910870279.1A CN201910870279A CN110554286A CN 110554286 A CN110554286 A CN 110554286A CN 201910870279 A CN201910870279 A CN 201910870279A CN 110554286 A CN110554286 A CN 110554286A
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- Prior art keywords
- voltage
- current
- adjustable
- insulation
- detecting device
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses an insulation detection device with adjustable voltage. The system comprises a windmill, a generator, a storage battery, a voltage inversion system, a transformation system, a voltage rectification system, a voltage regulation sliding strip, a binding post, a digital display voltage ammeter and a switch. The device mainly used insulation of insulation resistance detects, and the device can adjust the size of test voltage wantonly in the voltage control range, can satisfy different insulation resistance's test environment's demand, utilizes the wind energy as the energy source of device simultaneously, improves the utilization ratio of the energy.
Description
Technical Field
The invention relates to a resistance measuring instrument, in particular to an insulation detecting device with adjustable voltage.
Background
Electricity is an essential thing in human life, and all electronic equipment and intelligent equipment need electricity to provide energy. The electricity utilization safety exists in the electricity utilization process, and one of the most basic conditions for the normal operation of the electrical equipment is the insulation degree of the insulation material, namely the value of the insulation resistance. When the insulating material is heated and wetted, the insulating material is continuously aged, so that the resistance value is reduced, and electric leakage or short circuit of the electrical equipment is caused.
In order to avoid accidents, the insulation resistance needs to be tested by some resistance measuring instruments to judge whether the resistance meets the requirements of equipment. For some insulation resistors, the resistance value of the insulation resistor cannot be measured under low voltage and is required to be measured under different high voltages, so that the measurement instrument is required to flexibly adjust the measurement voltage in the detection process.
Disclosure of Invention
The invention provides a detection device, in particular to an insulation detection device with adjustable voltage, which is used for detecting the resistance value of an insulation resistor so as to judge the insulation of the insulation resistor.
The scheme adopted by the invention for solving the problems is as follows: the device consists of a windmill, a generator, a storage battery, a voltage inversion system, a transformation system, a voltage rectification system, a voltage regulation sliding strip, a binding post, a digital display voltage ammeter and a switch.
The windmill is connected with a generator, and the generator is connected with a storage battery to form a power generation system of the device.
Further, the electric energy generated by the rotation of the windmill is stored in the storage battery, and the output voltage of the storage battery is kept consistent with the input voltage of the voltage inverter system.
The voltage inverter system converts direct current in the storage battery into 200V alternating current.
Furthermore, the inverter system comprises an input circuit, an inverter circuit and an output circuit, wherein the input circuit inputs direct current, the inverter circuit converts the direct current into alternating current, and the alternating current is output to the voltage transformation system through the output circuit.
The voltage transformation system can transform the 200V alternating current generated by the voltage inversion system to generate a high-voltage current; meanwhile, the voltage transformation system is connected with the voltage regulation sliding strip, and the voltage in the test loop is changed by shifting the sliding strip.
Further, the voltage transformation system comprises an input circuit, a transformation coil, a voltage regulation circuit and an output circuit.
Furthermore, the adjusting circuit is formed by connecting a fixed value resistor and a sliding resistor in series, the sliding resistor is used for changing the current of the voltage transformation circuit, when the voltage adjusting sliding strip slides to the maximum voltage value, the sliding resistor is in short circuit, the resistance value is 0, and the current is maximum; when the sliding strip slides to the position of the minimum voltage value, the sliding resistor is completely switched on, the resistance value is maximum, and the current is minimum.
Furthermore, the output circuit is connected to two ends of the fixed value resistor, and the current is changed through the sliding resistor, so that the voltage of the output circuit is changed.
The voltage rectification system converts alternating current after voltage transformation into direct current through a rectification system and is used in a detection loop.
Further, the rectifying system comprises an input circuit, a rectifying circuit, a filter circuit and an output circuit.
Further, the rectifying circuit is full-wave rectification, the rectified voltage is 0.9 times of the rectified voltage before rectification, the rectified voltage is filtered by a large electrolytic capacitor, and the filtered voltage is 1.5 times of the filtered voltage before filtering.
The binding post is connected with an output circuit of the rectifying circuit, and the high-voltage direct current after voltage transformation is connected into the test loop.
The digital display voltage ammeter is connected to the test circuit for measuring the voltage and current in the display circuit
Drawings
The invention is further described below with reference to the drawings and the following examples.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic diagram of a regulated voltage circuit
FIG. 3 is a view showing the structure of the exterior of the apparatus
In the figure, 1 windmill, 2 generator, 3 storage battery, 4 voltage inverter system, 5 transformation system, 6 voltage rectifier system, 7 voltage regulation slide bar, 8 binding post, 9 digital display voltage ammeter and 10 switch.
Detailed Description
The attached figure is a schematic structural diagram of the invention, the rotation of a windmill 1 generates mechanical energy, a generator 2 converts the mechanical energy into electric energy to be stored in a storage battery 3, a binding post 8 is well connected with an insulation resistor, a switch 10 is pressed down, the generator 2 supplies power for a circuit, and then the electric energy sequentially passes through a voltage inverter system 4, a transformer system 5, a voltage rectifier system 6 and the binding post 8 to complete a loop through the insulation resistor, a digital display voltage ammeter 9 displays the magnitude of current and voltage in the loop, a voltage adjusting sliding strip 7 is shifted to change the circuit voltage, and the change of the data value of the current and voltage is observed.
When current flows through an inverter system, direct current is changed into 200V alternating current, the alternating current flows through a transformer system and is transformed through a transformer coil, the turn ratio of a first coil to a second coil is 1:10, the transformed alternating current is 2000V, and the current enters a regulating transformer circuit, wherein the resistance value of a fixed resistor is 50 omega, the resistance value of a sliding resistor is 150 omega, the two resistors are connected in series, when the sliding resistor is 0 omega, the current in a voltage regulating circuit is 40A, at the moment, the alternating current output by an output circuit of the transformer system is 40A 50 omega 2000V, the direct current voltage after rectification is 2000V 0.9V 1.5V 2700V, namely the regulating upper limit of a voltage regulating slide bar is 2700V. When the sliding resistance is 150 Ω, the total resistance of the regulating voltage circuit is 200 Ω, the current is 10A, at this time, the alternating current output by the output circuit of the voltage transformation system is 10A × 50 Ω -500V, after rectification and filtering, the direct current voltage input into the test circuit is 500V × 0.9 × 1.5-675V, that is, the regulating lower limit of the voltage regulating slider is 675V, and the transformation range of the whole device is 675V-2700V.
Claims (7)
1. The insulation detection device with adjustable voltage is characterized by comprising a windmill, a generator, a storage battery, a voltage inversion system, a transformation system, a voltage rectification system, a voltage adjustment sliding strip, a binding post and a digital display voltage and current meter.
2. The insulation detecting device with adjustable voltage according to claim 1, wherein: the windmill is connected with a generator, the generated electric energy is stored in a storage battery, and the output voltage of the storage battery is consistent with the input voltage of the voltage inverter system.
3. The insulation detecting device with adjustable voltage according to claim 1, wherein: the voltage inverter system converts the direct current flowing into the storage battery into 200V alternating current.
4. The insulation detecting device with adjustable voltage according to claim 1, wherein: the voltage transformation system can transform the 200V alternating current generated by the voltage inversion system to generate a high-voltage current; meanwhile, the voltage transformation system is connected with the voltage regulation sliding strip, and the voltage in the test loop is changed by shifting the sliding strip.
5. The insulation detecting device with adjustable voltage according to claim 1, wherein: the voltage rectification system converts alternating current after voltage transformation into direct current through the rectification system, and the direct current flows into the test loop.
6. The insulation detecting device with adjustable voltage according to claim 1, wherein: the voltage regulation sliding bar is connected with a sliding resistor in the voltage transformation system, the sliding resistor is directly controlled, and the current and voltage are changed by changing the resistance value in the circuit; the two ends of the sliding bar are respectively the maximum value and the minimum value of the voltage, and the magnitude of the direct current voltage in the test loop fluctuates within the upper limit and the lower limit corresponding to the 0 resistance and the maximum resistance of the sliding resistance.
7. The insulation detecting device with adjustable voltage according to claim 1, wherein: the digital display voltage ammeter is connected to the test loop and measures the voltage and current in the display loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870279.1A CN110554286A (en) | 2019-09-16 | 2019-09-16 | Voltage-adjustable insulation detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870279.1A CN110554286A (en) | 2019-09-16 | 2019-09-16 | Voltage-adjustable insulation detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110554286A true CN110554286A (en) | 2019-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910870279.1A Pending CN110554286A (en) | 2019-09-16 | 2019-09-16 | Voltage-adjustable insulation detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110554286A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87201768U (en) * | 1987-02-05 | 1987-12-26 | 牡丹江市测试仪器厂 | Portable test unit for ac/dc electric meters |
| CN203587699U (en) * | 2013-10-15 | 2014-05-07 | 上海中铁通信信号国际工程有限公司 | Insulation resistance testing device |
| CN204347123U (en) * | 2015-01-07 | 2015-05-20 | 云南电网有限责任公司玉溪供电局 | For reducing the thunderbolt sense terminals that the transmission line of electricity of tripping rate with lightning strike is transformed |
| CN204517695U (en) * | 2015-04-01 | 2015-07-29 | 陕西蓝海电气有限公司 | A kind of inverter |
| JP2017142269A (en) * | 2013-11-22 | 2017-08-17 | 三菱電機株式会社 | Insulation detector and electric device |
| CN207866462U (en) * | 2017-12-04 | 2018-09-14 | 南京工业职业技术学院 | A kind of multi-function windtunnel experimental provision |
-
2019
- 2019-09-16 CN CN201910870279.1A patent/CN110554286A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87201768U (en) * | 1987-02-05 | 1987-12-26 | 牡丹江市测试仪器厂 | Portable test unit for ac/dc electric meters |
| CN203587699U (en) * | 2013-10-15 | 2014-05-07 | 上海中铁通信信号国际工程有限公司 | Insulation resistance testing device |
| JP2017142269A (en) * | 2013-11-22 | 2017-08-17 | 三菱電機株式会社 | Insulation detector and electric device |
| CN204347123U (en) * | 2015-01-07 | 2015-05-20 | 云南电网有限责任公司玉溪供电局 | For reducing the thunderbolt sense terminals that the transmission line of electricity of tripping rate with lightning strike is transformed |
| CN204517695U (en) * | 2015-04-01 | 2015-07-29 | 陕西蓝海电气有限公司 | A kind of inverter |
| CN207866462U (en) * | 2017-12-04 | 2018-09-14 | 南京工业职业技术学院 | A kind of multi-function windtunnel experimental provision |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191210 |
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| WD01 | Invention patent application deemed withdrawn after publication |