CN108493020A - A kind of low voltage isolation switch preventing on-load operation - Google Patents
A kind of low voltage isolation switch preventing on-load operation Download PDFInfo
- Publication number
- CN108493020A CN108493020A CN201810323068.1A CN201810323068A CN108493020A CN 108493020 A CN108493020 A CN 108493020A CN 201810323068 A CN201810323068 A CN 201810323068A CN 108493020 A CN108493020 A CN 108493020A
- Authority
- CN
- China
- Prior art keywords
- low voltage
- voltage isolation
- isolation switch
- electromagnetic relay
- load operation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention relates to disconnecting switch technical field, especially a kind of low voltage isolation switch preventing on-load operation, including pedestal includes low voltage isolation switch, breaker, step-down transformer and electromagnetic relay on the pedestal；It is also associated with warning lamp in the step-down transformer, electromagnetic relay circuit；Electric current is transmitted to breaker by the low voltage isolation switch；The circuit breaker current branches to step-down transformer, and the voltage after decompression is added in electromagnetic relay and warning lamp both ends.The present invention controls the work of electromagnetic relay using breaker, and low voltage isolation switch could be disconnected in the case of only first cut-off breaker, prevents the ability that bringing onto load operates strong, simple in structure.
Description
Technical field
The present invention relates to disconnecting switch technical fields more particularly to a kind of low pressure preventing on-load operation to keep apart
It closes.
Background technology
Low voltage isolation switch is the key equipment in distribution system, mainly electrically sets the busbar overhauled, breaker etc.
It is standby to carry out electrical isolation with alive circuit, and according to operation of power networks demand, in zero load switching circuit, division Smaller load
Electric current etc. is one of the switchgear that usage amount is maximum in distribution system, application range is most wide.Since low voltage isolation switch does not have
Special arc-control device, thus can only circuit be switched off device disconnect in the case of could be operated, when flow through low pressure every
When leaving the electric current of pass and reaching certain value, if accidentally accidentally dividing low voltage isolation switch in the case where breaker is not turned off,
It just will appear electric arc, thus can bring the serious consequences such as fire hazard, breakdown equipment.
The method for traditionally preventing maloperation be all on contact using be arranged some mechanical chains, but due to low pressure be isolated
Construction of switch is simple, and mechanical chain gets rusty easily and is easy the actual conditions such as artificially to be forgotten, causes in actual operation and maintenance
It is easy to that there is a situation where on-load operation disconnecting switch in the process.Therefore, on-load operation disconnecting switch how is effectively prevent
The problem that always related technical staff faces.
Invention content
The actual conditions that the present invention is easy to have accidentally on-load operation for existing low voltage isolation switch, providing one kind can prevent
The low voltage isolation switch of stop-band load operation.
The purpose of the present invention is to provide a kind of low voltage isolation switchs preventing on-load operation, to solve above-mentioned technology
Problem.
The present invention using following technical scheme in order to solve the above technical problems, realized：
Design a kind of low voltage isolation switch preventing on-load operation, including pedestal, include low pressure on the pedestal every
Leave pass, breaker, step-down transformer and electromagnetic relay；It is also connected in the step-down transformer, electromagnetic relay circuit
There is warning lamp；Electric current is transmitted to breaker by the low voltage isolation switch；The circuit breaker current branches to step-down transformer,
Voltage after decompression is added in electromagnetic relay and warning lamp both ends.
It is actually being powered, since the actuation of electromagnetic relay acts on, can not directly disconnect low voltage isolation switch, only
Have in the case where being initially switched off breaker, just can really be risen with cutoff low disconnecting switch since electromagnetic relay does not work
To the function of preventing on-load operation.Meanwhile warning lamp can be always on always during the energization, play the work of auxiliary warning
With.
Preferably, low voltage isolation switch include movable contact block, fixed contact pedestal, moving contact, cushion pad, the first insulator, under
It is attracted piece, the second insulator, third insulator, rotation axis, adjustable spring, static contact, fixed upright bar.
Preferably, the first insulator, the second insulator, third insulator are glass-epoxy composite insulator,
To improve the insulation performance of low voltage isolation switch.
Preferably, breaker includes switch.
Preferably, electromagnetic relay upper end includes upper actuation piece.
Preferably, electromagnetic relay and warning lamp are connected on the secondary coil of step-down transformer.
The present invention provides a kind of low voltage isolation switch preventing on-load operation, advantage is：In reality
In the case of energization, since the actuation of electromagnetic relay acts on, low voltage isolation switch can not be directly disconnected, is only being initially switched off open circuit
In the case of device, due to electromagnetic relay does not work just can be with cutoff low disconnecting switch, really playing prevents on-load
The function of operation.Apparatus of the present invention prevent bringing onto load operating effect good, simple and reliable for structure.
Description of the drawings
Fig. 1 is the schematic front view of the present invention.
In figure：Pedestal 1, breaker 3, step-down transformer 4, electromagnetic relay 5, warning lamp 6, is moved and is touched low voltage isolation switch 2
Headstock 7, fixed contact pedestal 8, moving contact 9, cushion pad 10, the first insulator 11, lower actuation piece 12, the second insulator 13, third are exhausted
Edge 14, rotation axis 15, adjustable spring 16, switch 17, static contact 18, upper actuation piece 19, fixed upright bar 20.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1, a kind of low voltage isolation switch preventing on-load operation, including pedestal 1 include low pressure on pedestal 1
Disconnecting switch 2, breaker 3, step-down transformer 4 and electromagnetic relay 5；Breaker 3 includes switch 17,5 upper end of electromagnetic relay
Including upper actuation piece 19；It is also in series with warning lamp 6 in step-down transformer 4,5 circuit of electromagnetic relay；Low voltage isolation switch 2 will be electric
It is streamed to breaker 3；For breaker 3 by current distributing to step-down transformer 4, the voltage after decompression is added in electromagnetic relay 5
With 6 both ends of warning lamp.
Low voltage isolation switch 2 include movable contact block 7, fixed contact pedestal 8, moving contact 9, cushion pad 10, the first insulator 11, under
It is attracted piece 12, the second insulator 13, third insulator 14, rotation axis 15, adjustable spring 16, static contact 18, fixed upright bar 20；The
One insulator 11, the second insulator 13, third insulator 14 are glass-epoxy composite insulator.
It is actually being powered, since the actuation of electromagnetic relay 5 acts on, can not directly disconnect low voltage isolation switch 2,
Only when being initially switched off the switch 17 of breaker 3, due to electromagnetic relay 5 do not work just can with cutoff low disconnecting switch 2,
Really play the function of preventing on-load operation.Meanwhile warning lamp can be always on always during the energization, play auxiliary warning
Effect.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of low voltage isolation switch preventing on-load operation, including pedestal (1), it is characterised in that：On the pedestal (1)
Equipped with low voltage isolation switch (2), breaker (3), step-down transformer (4) and electromagnetic relay (5)；The step-down transformer
(4), it is also associated with warning lamp (6) in electromagnetic relay (5) circuit；Electric current is transmitted to open circuit by the low voltage isolation switch (2)
Device (3)；For the breaker (3) by current distributing to step-down transformer (4), the voltage after decompression is added in electromagnetic relay
(5) and warning lamp (6) both ends.
2. a kind of low voltage isolation switch preventing on-load operation according to claim 1, which is characterized in that described
Low voltage isolation switch (2) includes movable contact block (7), fixed contact pedestal (8), moving contact (9), cushion pad (10), the first insulator
(11), lower actuation piece (12), the second insulator (13), third insulator (14), rotation axis (15), adjustable spring (16), stationary contact
Head (18), fixed upright bar (20).
3. a kind of low voltage isolation switch preventing on-load operation according to claim 2, which is characterized in that described
First insulator (11), the second insulator (13), third insulator (14) are glass-epoxy composite insulator.
4. a kind of low voltage isolation switch preventing on-load operation according to claim 1, which is characterized in that described
Breaker (3) includes switch (17).
5. a kind of low voltage isolation switch preventing on-load operation according to claim 1, which is characterized in that described
Electromagnetic relay (5) upper end includes upper actuation piece (19).
6. a kind of low voltage isolation switch preventing on-load operation according to claim 1, which is characterized in that described
Electromagnetic relay (5) and warning lamp (6) are connected on the secondary coil of step-down transformer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810323068.1A CN108493020A (en) | 2018-04-11 | 2018-04-11 | A kind of low voltage isolation switch preventing on-load operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810323068.1A CN108493020A (en) | 2018-04-11 | 2018-04-11 | A kind of low voltage isolation switch preventing on-load operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108493020A true CN108493020A (en) | 2018-09-04 |
Family
ID=63315638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810323068.1A Pending CN108493020A (en) | 2018-04-11 | 2018-04-11 | A kind of low voltage isolation switch preventing on-load operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108493020A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996028872A1 (en) * | 1995-03-16 | 1996-09-19 | Schneider Electric S.A. | Electrical differential protection apparatus with a test circuit |
| CN2501180Y (en) * | 2001-09-04 | 2002-07-17 | 张友良 | Multifunctional electromagnetic leakage circuit breaker |
| CN102377117A (en) * | 2011-12-12 | 2012-03-14 | 济南轨道交通装备有限责任公司 | Maintaining and protecting system for transformer of wind driven generator |
| CN102500467A (en) * | 2011-12-01 | 2012-06-20 | 云南省曲靖双友钢铁有限公司 | Safe electromagnetic chuck circuit |
| CN203352526U (en) * | 2013-07-30 | 2013-12-18 | 上海优耐特斯压缩机有限公司 | Compressor 380V/660V-power source switching control system |
| CN205122458U (en) * | 2015-10-19 | 2016-03-30 | 夏烬楚 | A prevent misconnection ground isolator for 110kV electric wire netting |
| CN205229721U (en) * | 2015-12-10 | 2016-05-11 | 成都德善能科技有限公司 | Safe 10kV transformer that closes a floodgate |
| CN205564576U (en) * | 2016-04-20 | 2016-09-07 | 陈伟东 | Electromagnetism blocking device by step motor control |
| CN206471245U (en) * | 2017-02-20 | 2017-09-05 | 广州市龙自安电气有限公司 | A kind of low tension switch protects control device |
-
2018
- 2018-04-11 CN CN201810323068.1A patent/CN108493020A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996028872A1 (en) * | 1995-03-16 | 1996-09-19 | Schneider Electric S.A. | Electrical differential protection apparatus with a test circuit |
| CN2501180Y (en) * | 2001-09-04 | 2002-07-17 | 张友良 | Multifunctional electromagnetic leakage circuit breaker |
| CN102500467A (en) * | 2011-12-01 | 2012-06-20 | 云南省曲靖双友钢铁有限公司 | Safe electromagnetic chuck circuit |
| CN102377117A (en) * | 2011-12-12 | 2012-03-14 | 济南轨道交通装备有限责任公司 | Maintaining and protecting system for transformer of wind driven generator |
| CN203352526U (en) * | 2013-07-30 | 2013-12-18 | 上海优耐特斯压缩机有限公司 | Compressor 380V/660V-power source switching control system |
| CN205122458U (en) * | 2015-10-19 | 2016-03-30 | 夏烬楚 | A prevent misconnection ground isolator for 110kV electric wire netting |
| CN205229721U (en) * | 2015-12-10 | 2016-05-11 | 成都德善能科技有限公司 | Safe 10kV transformer that closes a floodgate |
| CN205564576U (en) * | 2016-04-20 | 2016-09-07 | 陈伟东 | Electromagnetism blocking device by step motor control |
| CN206471245U (en) * | 2017-02-20 | 2017-09-05 | 广州市龙自安电气有限公司 | A kind of low tension switch protects control device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180904 |