CN203444980U - Low voltage power capacitor - Google Patents
Low voltage power capacitor Download PDFInfo
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- CN203444980U CN203444980U CN201320506637.9U CN201320506637U CN203444980U CN 203444980 U CN203444980 U CN 203444980U CN 201320506637 U CN201320506637 U CN 201320506637U CN 203444980 U CN203444980 U CN 203444980U
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- capacitor
- terminal module
- current
- power capacitor
- temperature signal
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Abstract
The utility model provides a low voltage power capacitor comprising a current temperature signal integrated terminal module which is connected to a capacitor top cover plate, a current transformer which is connected with the current temperature signal integrated terminal module and is used for detecting a current signal in a power capacitor, and a temperature sensor used for detecting a temperature signal in the power capacitor. The current temperature signal integrated terminal module is connected with a detection control unit outside the capacitor, and the control and protection of the capacitor are realized. The low voltage power capacitor has the advantages that the working current and temperature condition in the power capacitor can be monitored, a feedback signal is rapidly collected, and the power capacitor is protected timely.
Description
Technical field
The utility model relates to low-voltage power and capacitance technical field, refers to especially a kind of power capacitor of being convenient to Detection capacitance device internal current and temperature.
Background technology
In low-voltage distribution, power capacitor is absolutely necessary.On traditional power capacitor lamina tecti, only comprise A, B, C three phase mains binding post and zero line binding post.Therefore, power capacitor itself cannot provide capacitor internal current signal and temperature signal.Can not reflect in real time capacitor working stream situation, the abnormal conditions such as the harmonic wave in electric power system, surge are fed back in real time; Also cannot to capacitor, protect by the switching state of control capacitor.Also have the temperature of capacitor internal not measure in real time, cannot realize the real-time monitoring to capacitor self variations in temperature, thereby reflect the working temperature state of capacitor, realize the protection to capacitor.
Utility model content
The utility model proposes a kind of low voltage power capacitor, solved the problem that can not reflect capacitor working stream situation and monitoring internal temperature in prior art.
The technical solution of the utility model is achieved in that a kind of low voltage power capacitor, comprises the integrated terminal module of current temperature signal being connected on capacitor lamina tecti and is connected with the integrated terminal module of current temperature signal and for detection of the current transformer of power capacitor internal current signal with for detection of the temperature sensor of power capacitor internal temperature signal; The detection control unit that the integrated terminal module of described current temperature signal connects capacitor outside, realizes the control and protection to capacitor.
Further preferred as the utility model, on described capacitor lamina tecti, be provided with three phase mains terminal module, on described three phase mains terminal module and the integrated terminal module of current temperature signal, be respectively equipped with power supply terminal.
Further preferred as the utility model, described power supply terminal comprises: plastic end submodule, and it is arranged on capacitor lamina tecti; Binding post/stud, it is arranged on capacitor lamina tecti through plastic end submodule; Silica gel sealing ring, it is arranged on capacitor lamina tecti and seals; Current transformer, it is arranged on the below of silica gel sealing ring; Epoxy pad, it is arranged on the below of current transformer; Nut, it is arranged on the below of epoxy pad, for connecting Binding post/stud and fixedly silica gel sealing ring, current transformer and epoxy pad.
Further preferred as the utility model, on the integrated terminal module of described current temperature signal, be respectively equipped with the current signal binding post being connected with current transformer and the temperature signal binding post being connected with temperature sensor.
Further preferred as the utility model, described capacitor internal is provided with capacitance core group, and described temperature sensor is arranged between capacitance core group.
Further preferred as the utility model, between the integrated terminal module of described current temperature signal and three phase mains terminal module, be provided with the burst disk being connected with three phase mains terminal module.
Further preferred as the utility model, the integrated terminal module of described current temperature signal is provided with zero terminal.
Further preferred as the utility model, the center of described capacitor lamina tecti is provided with grounding screw.
The beneficial effects of the utility model are as follows:
Compare with traditional power capacitor, the utility model is provided with and detects the current transformer of power capacitor internal current signal and for detection of the temperature sensor of power capacitor internal temperature signal.The operating current situation of reflection capacitor that can be real-time is carried out real-time feedback to abnormal conditions such as the harmonic wave in electric power system, surges simultaneously, by the switching state of control capacitor, capacitor is protected.By capacitor internal temperature is measured in real time, realize capacitor self variations in temperature is carried out to real-time monitoring, and reflect the working temperature state of capacitor, realize the protection to capacitor.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the utility model capacitor lamina tecti structural representation;
Fig. 2 is vertical view of the present utility model;
Fig. 3 is cutaway view of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As Figure 1-3, a kind of low voltage power capacitor, comprises capacitor lamina tecti 1, and the integrated terminal module 2 of current temperature signal and three phase mains terminal module 5 are arranged on respectively the right and left of capacitor lamina tecti 1 upper surface.The center of capacitor lamina tecti 1 is provided with grounding screw 18, can guarantee the reliable ground of power capacitor.The integrated terminal module 2 of current temperature signal is provided with zero terminal 15.By such forceful electric power module and the so separately design of light current module of the integrated terminal module 2 of current temperature signal of three phase mains terminal module 5, intercondenser two modules was designed with burst disk 11 originally, can effectively guarantee capacitor safety and reliability in use.Three phase mains terminal module 5 comprises power supply terminal A phase, B phase and C phase.Burst disk 11 is connected with wire with 5 of three phase mains terminal modules, and the electric clearance between the A phase of three phase mains terminal module 5, C phase and burst disk is designed to 19.5mm, meets the requirement that voltage is the electric clearance between 690V～800V.
Each power supply terminal 14 comprises plastic end submodule 13, Binding post/stud 6, silica gel sealing packing ring 8, current transformer 3, epoxy pad 9, nut 10.Plastic end submodule 13 is arranged on capacitor lamina tecti 1, and Binding post/stud 6 passes plastic end submodule 13, and is arranged on capacitor lamina tecti 1; Silica gel sealing packing ring 8 is placed between Binding post/stud 6 and capacitor lamina tecti 1, utilizes silica gel sealing packing ring 8 retractilities and ductility, eliminates Binding post/stud 6 and capacitor lamina tecti 1 gap, reaches zero clearance, has also played good sealing function; For the capacitor of oily formula, can effectively prevent that the fluid of capacitor internal from overflowing from terminal hole; Utilize the elasticity of silica gel sealing packing ring 8 simultaneously, played the effect of spring shim here, there is the effect that prevents that preferably nut 10 is loosening.In wiring screw rod 6, current transformer 3 is installed after silica gel sealing packing ring 8, this kind of connected mode can increase electric clearance and the creepage distance between nut 10 capacitor lamina tectis 1 on the one hand, can measure more accurately on the other hand the current signal of each phase in capacitor.Epoxy pad 9 is installed after current transformer 3, can be played effect heat insulation, that insulate, increase electric clearance and creepage distance, can guarantee the fastening rear held stationary of whole Binding post/stud 6 simultaneously.Consider the actual operating conditions of capacitor, its maximum is born voltage may reach 800V, therefore, for three phase mains terminal module 5, the electric clearance between each power supply terminal is designed to 16mm(according to GB/T15576-2008 standard design).
Power capacitor divides common apotype and minute apotype.Be total to the power capacitor of apotype, need two current transformers 3, A phase current mutual inductor 3 and C phase current mutual inductor 3, there are IA1, IA2, IC1, IC2 totally 4 lead-in wires, will be wherein two Same Name of Ends lead-in wire IA2 and IC2 link together, the neutral line binding post IN that is connected to the current signal binding post 17 on the integrated terminal module 2 of current temperature signal is upper, and two lines are in addition connected respectively on IA and IC current signal binding post 17.The power capacitor that divides apotype, need three current transformers 3, A phase current mutual inductor 3, B phase current mutual inductor 3, C phase current mutual inductor 3, amount to 6 lead-in wires, wherein 3 Same Name of Ends lead-in wire IA2, IB2, IC2 link together, and the neutral line terminal IN that is connected to the current signal binding post 17 on the integrated terminal module 2 of current temperature signal is upper, other 3 draw root line IA1, IB1, IC1 connect respectively on IA, IB, IC current signal binding post 17.Temperature sensor 4 has two lead-in wires, is connected on two temperature signal binding posts 16 at middle part on current temperature signal integration module 2.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a low voltage power capacitor, it is characterized in that, comprise the integrated terminal module of current temperature signal (2) being connected on capacitor lamina tecti (1) and be connected with the integrated terminal module of current temperature signal (2) and for detection of the current transformer (3) of power capacitor internal current signal with for detection of the temperature sensor (4) of power capacitor internal temperature signal; The integrated terminal module of described current temperature signal (2) connects the detection control unit (12) of capacitor outside, realizes the control and protection to capacitor.
2. a kind of low voltage power capacitor according to claim 1, is characterized in that, is provided with three phase mains terminal module (5) on described capacitor lamina tecti (1), and described three phase mains terminal module (5) is provided with power supply terminal (14).
3. a kind of low voltage power capacitor according to claim 2, is characterized in that, described power supply terminal (14) comprising: plastic end submodule (13), and it is arranged on capacitor lamina tecti (1); Binding post/stud (6), it is arranged on capacitor lamina tecti (1) through plastic end submodule (13); Silica gel sealing ring (8), it is arranged on capacitor lamina tecti (1) above and seals; Current transformer (3), it is arranged on the below of silica gel sealing ring (8); Epoxy pad (9), it is arranged on the below of current transformer (3); Nut (10), it is arranged on the below of epoxy pad (9), for connecting Binding post/stud (6) and fixedly silica gel sealing ring (8), current transformer (3) and epoxy pad (9).
4. a kind of low voltage power capacitor according to claim 2, it is characterized in that, on the integrated terminal module of described current temperature signal (2), be respectively equipped with the current signal binding post (17) being connected with current transformer (3) and the temperature signal binding post (16) being connected with temperature sensor (4).
5. according to a kind of low voltage power capacitor described in claim 1 or 4, it is characterized in that, described capacitor internal is provided with capacitance core group (7), and described temperature sensor (4) is arranged between capacitance core group (7).
6. a kind of low voltage power capacitor according to claim 1 and 2, it is characterized in that, between the integrated terminal module of described current temperature signal (2) and three phase mains terminal module (5), be provided with the burst disk (11) being connected with three phase mains terminal module (5).
7. a kind of low voltage power capacitor according to claim 4, is characterized in that, the integrated terminal module of described current temperature signal (2) is provided with zero terminal (15).
8. a kind of low voltage power capacitor according to claim 1, is characterized in that, is provided with the Binding post/stud (18) that can make power capacitor reliable ground on described capacitor lamina tecti (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320506637.9U CN203444980U (en) | 2013-08-19 | 2013-08-19 | Low voltage power capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320506637.9U CN203444980U (en) | 2013-08-19 | 2013-08-19 | Low voltage power capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203444980U true CN203444980U (en) | 2014-02-19 |
Family
ID=50096006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320506637.9U Withdrawn - After Issue CN203444980U (en) | 2013-08-19 | 2013-08-19 | Low voltage power capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203444980U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426629A (en) * | 2013-08-19 | 2013-12-04 | 浙江南德电气有限公司 | Low-voltage power capacitor |
| CN105679533A (en) * | 2016-03-31 | 2016-06-15 | 姚筱清 | High-capacity capacitor having anti-explosion function |
-
2013
- 2013-08-19 CN CN201320506637.9U patent/CN203444980U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426629A (en) * | 2013-08-19 | 2013-12-04 | 浙江南德电气有限公司 | Low-voltage power capacitor |
| CN103426629B (en) * | 2013-08-19 | 2017-03-29 | 浙江南德电气有限公司 | A kind of low voltage power capacitor |
| CN105679533A (en) * | 2016-03-31 | 2016-06-15 | 姚筱清 | High-capacity capacitor having anti-explosion function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140219 Effective date of abandoning: 20170329 |
|
| AV01 | Patent right actively abandoned |