CN205229309U - Electric wire netting looks / line voltage direct reading electric capacity and shift capacitor detector - Google Patents
Electric wire netting looks / line voltage direct reading electric capacity and shift capacitor detector Download PDFInfo
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- CN205229309U CN205229309U CN201520723759.2U CN201520723759U CN205229309U CN 205229309 U CN205229309 U CN 205229309U CN 201520723759 U CN201520723759 U CN 201520723759U CN 205229309 U CN205229309 U CN 205229309U
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Abstract
The utility model discloses an electric wire netting looks / line voltage direct reading electric capacity and shift capacitor detector, including current transformer, protection and observing and controlling unit and LED display element, wherein current transformer surveys capacitance connection with the quilt to the reactive current volume of electric capacity is surveyed in the perception, and distributes to the protection and observe and control the unit after the transformation of scale, the protection is connected with LED display element with the observing and controlling unit, and the capacitance value by survey electric capacity that will detect transmits to LED display element to the demonstration is read. The utility model discloses a phase shifting capacitor dynamic verification appearance can be at automatic switch -over under looks / line voltage to the big current detection 30.4KV alpha r reactive compensation capacitance of the biggest 80A power frequency, simultaneously, direct reading active loss wattage and dielectric loss angle tan delta.
Description
Technical field
The utility model relates to electrotechnics and fields of measurement, refers in particular to a kind of electrical network phase/line voltage direct-reading electric capacity and shift capacitor detector.
Background technology
Phase shift and power back-off capacitor in electrical network, often have in operation and occur " expansion bulge " fault under operating voltage, prior art generally adopts electric bridge rule of three or voltammetry to carry out failture evacuation, and these two kinds of methods are low-voltage, and electric current is less, and its accuracy of detection is low.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, provides a kind of electrical network phase/line voltage direct-reading electric capacity and shift capacitor detector.
The technical scheme that the utility model is taked is as follows: a kind of electrical network phase/line voltage direct-reading electric capacity and shift capacitor detector, comprise current transformer, protection and test unit and LED display unit, wherein current transformer is connected with measured capacitance, with the reactive current amount of perception measured capacitance, and after transformation of scale, distribute to protection and test unit; Protection and test unit is connected with LED display unit, and the capacitance of the measured capacitance detected is passed to LED display unit, so that display is read.
Preferably, described protection and test unit comprises overcurrent protection module, electric capacity range handover module, reactive current measurement module, capacitance value display module, tested electric capacity active loss measurement module and tested electric capacity dielectric loss angle measurement module under rated voltage under rated voltage.
Preferably; described overcurrent protection module, electric capacity range handover module, reactive current measurement module, capacitance value display module, tested electric capacity active loss measurement module and tested electric capacity dielectric loss angle measurement module under rated voltage under rated voltage is connected in parallel, and measure overcurrent protection respectively, active loss wattage that electric capacity range amount of switched, reactive current measured value, capacitance value displayed value, tested electric capacity produce under rated voltage and tested electric capacity dielectric loss angle under rated voltage.
Preferably, described protection and test unit connecting test starts and protection act cut-off relay, residual charge discharge loop and master phase angle and phase/line voltage perception change-over switch.
The beneficial effects of the utility model are:
The utility model is a kind of application electrical network phase/line operating voltage, the detection scheme under nominal current conditions; Application I ∥ C power frequency variable constant matches with natural proportion coefficient, and get power frequency 50Hz220V/380V power phase/line power supply, during phase voltage 220V, 1A electric current reflects 14.48 μ F electric capacitys, and during line voltage 380V, 1A electric current reflects 8.382 μ F electric capacitys; The electric capacity designed unitary current reflects is converted to corresponding voltage mV value, adopts the digital direct-reading capacitance value of LED.
Phase-shift capacitor dynamic measuring instrument of the present utility model, can automatically switch under phase/line voltage, detects 30.4KV α r reactive compensation capacitor amount with maximum 80A power frequency heavy-current; Meanwhile, direct-reading active loss wattage and dielectric loss angle tan δ.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present utility model.
Fig. 2 is panel construction schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1 to Figure 2, the technical scheme that the utility model is taked is as follows: a kind of electrical network phase/line voltage direct-reading electric capacity and shift capacitor detector, comprise current transformer HL, protection and test unit and LED display unit, wherein current transformer HL is connected with measured capacitance, with the reactive current amount of perception measured capacitance, and after transformation of scale, distribute to protection and test unit; Protection and test unit is connected with LED display unit, and the capacitance of the measured capacitance detected is passed to LED display unit, so that display is read.
Protection and test unit comprises overcurrent protection module T1, electric capacity range handover module T2, reactive current measurement module L1, capacitance value display module L2, tested electric capacity active loss measurement module L3 and tested electric capacity dielectric loss angle measurement module L4 under rated voltage under rated voltage.
Overcurrent protection module T1, electric capacity range handover module T2, reactive current measurement module L1, capacitance value display module L2, tested electric capacity active loss measurement module L3 and tested electric capacity dielectric loss angle measurement module L4 under rated voltage under rated voltage is connected in parallel, and measure overcurrent protection Bo, electric capacity range amount of switched Q1 respectively, active loss wattage W that reactive current measured value A, capacitance value displayed value μ F, tested electric capacity produce under rated voltage and tested electric capacity dielectric loss angle tan δ under rated voltage.
Protection and test unit connecting test starts and protection act cut-off relay CJ, residual charge discharge loop and master phase angle and phase/line voltage perception change-over switch U.
Further, the utility model is a kind of application electrical network phase/line operating voltage, the detection scheme under nominal current conditions; Application I ∥ C power frequency variable constant matches with natural proportion coefficient, and get power frequency 50Hz220V/380V power phase/line power supply, during phase voltage 220V, 1A electric current reflects 14.48 μ F electric capacitys, and during line voltage 380V, 1A electric current reflects 8.382 μ F electric capacitys; The electric capacity designed unitary current reflects is converted to corresponding voltage mV value, adopts the digital direct-reading capacitance value of LED.Phase-shift capacitor dynamic measuring instrument of the present utility model, can automatically switch under phase/line voltage, detects 30.4KV α r reactive compensation capacitor amount with maximum 80A power frequency heavy-current; Meanwhile, direct-reading active loss wattage and dielectric loss angle tan δ.
As shown in Figure 1, the utility model testing power supply takes from 50Hz, 220V/380V phase/line voltage, through current transformer HL perception measured capacitance Cx reactive current amount, and distributes to protection and test unit after transformation of scale.In figure, Bo is overcurrent protection; Q1 is that electric capacity range switches; A is that reactive current is measured; μ F is the display of Cx capacitance value; W is the active loss wattage that tested electric capacity Cx produces under rated voltage; Tan δ is tested electric capacity Cx dielectric loss angle under rated voltage.CJ is test starting and protection act cut-off relay; FQ and RF is residual charge discharge loop, and U is that master phase angle switches with phase/line voltage perception.
As shown in Figure 2, the display of 1, phase/line voltage, AC0-500V, LED tri-and half display; 2, reactive current display, AC0-200A, LED tri-and half shows; 3, electric capacity display, 200 μ F/2000 μ F, LED tri-and half show; 4, active loss watt display, LED tri-and half shows; 5, dielectric loss angle tan δ shows 0-1.000; 6, test exports, and connects tested capacitor; 7, phase/line voltage lead-in clamp; 8, HR-2009X nameplate; 9, technology illustrates and exact value correction chart; 10, test starting key and signal lamp; 13, test stops and signal relief reset key; 14, residual charge discharge key.
Embodiment of the present utility model just introduces its embodiment, does not lie in and limits its protection domain.The technician of the industry can make some amendment under the inspiration of the present embodiment, therefore all equivalences done according to the utility model the scope of the claims change or modify, and all belong within the scope of the utility model Patent right requirement.
Claims (4)
1. electrical network phase/line voltage direct-reading electric capacity and shift capacitor detector, it is characterized in that: comprise current transformer (HL), protection and test unit and LED display unit, wherein current transformer (HL) is connected with measured capacitance, with the reactive current amount of perception measured capacitance, and after transformation of scale, distribute to protection and test unit; Protection and test unit is connected with LED display unit, and the capacitance of the measured capacitance detected is passed to LED display unit, so that display is read.
2. a kind of electrical network phase/line voltage direct-reading electric capacity according to claim 1 and shift capacitor detector, is characterized in that: described protection and test unit comprises overcurrent protection module (T1), electric capacity range handover module (T2), reactive current measurement module (L1), capacitance value display module (L2), tested electric capacity active loss measurement module (L3) and tested electric capacity dielectric loss angle measurement module (L4) under rated voltage under rated voltage.
3. a kind of electrical network phase/line voltage direct-reading electric capacity according to claim 2 and shift capacitor detector, it is characterized in that: described overcurrent protection module (T1), electric capacity range handover module (T2), reactive current measurement module (L1), capacitance value display module (L2), tested electric capacity active loss measurement module (L3) and tested electric capacity dielectric loss angle measurement module (L4) under rated voltage under rated voltage is connected in parallel, and measure overcurrent protection (Bo) respectively, electric capacity range amount of switched (Q1), reactive current measured value (A), capacitance value displayed value (μ F), the active loss wattage (W) that tested electric capacity produces under rated voltage and tested electric capacity is dielectric loss angle (tan δ) under rated voltage.
4. a kind of electrical network phase/line voltage direct-reading electric capacity according to claim 3 and shift capacitor detector, is characterized in that: described protection and test unit connecting test starts and protection act cut-off relay (CJ), residual charge discharge loop and master phase angle and phase/line voltage perception change-over switch (U).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723759.2U CN205229309U (en) | 2015-09-17 | 2015-09-17 | Electric wire netting looks / line voltage direct reading electric capacity and shift capacitor detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723759.2U CN205229309U (en) | 2015-09-17 | 2015-09-17 | Electric wire netting looks / line voltage direct reading electric capacity and shift capacitor detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205229309U true CN205229309U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520723759.2U Expired - Fee Related CN205229309U (en) | 2015-09-17 | 2015-09-17 | Electric wire netting looks / line voltage direct reading electric capacity and shift capacitor detector |
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| Country | Link |
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| CN (1) | CN205229309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112654876A (en) * | 2019-07-26 | 2021-04-13 | 东芝三菱电机产业系统株式会社 | Power conversion device and phase loss detection device |
-
2015
- 2015-09-17 CN CN201520723759.2U patent/CN205229309U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112654876A (en) * | 2019-07-26 | 2021-04-13 | 东芝三菱电机产业系统株式会社 | Power conversion device and phase loss detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20180917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |