CN107946147A - Plastic enclosure leakage circuit breaker - Google Patents
Plastic enclosure leakage circuit breaker Download PDFInfo
- Publication number
- CN107946147A CN107946147A CN201711393459.2A CN201711393459A CN107946147A CN 107946147 A CN107946147 A CN 107946147A CN 201711393459 A CN201711393459 A CN 201711393459A CN 107946147 A CN107946147 A CN 107946147A
- Authority
- CN
- China
- Prior art keywords
- terminal
- circuit
- proportional amplifier
- resistor
- connection
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
- H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
- H01H2071/124—Automatic release mechanisms with or without manual release using a solid-state trip unit with a hybrid structure, the solid state trip device being combined with a thermal or a electromagnetic trip
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The present invention relates to a kind of plastics enclosure leakage circuit breaker, including pedestal, lower connecting terminal, zero sequence current mutual inductor, the conducting wire that is flexible coupling, buckle releaser, operating mechanism, moving contact, static contact, arc-chutes, upper connecting terminal, plastic shell；Mainly buckle releaser connects an electronics trip gear；The electronics trip gear is by signal amplification circuit, magnetic silicon controlled switch circuit, electromagnetic control apparatus forms, signal amplification circuit includes proportional amplifier, input signal adjuster, the input terminal of input signal adjuster is connected by the secondary winding of rectification circuit and zero sequence current mutual inductor, the output terminal of input signal adjuster is connected with proportional amplifier input terminal, the output terminal of proportional amplifier and the control terminal of magnetic silicon controlled switch circuit connect, the electromagnetic coil of electromagnetic control apparatus is connected with magnetic silicon controlled switch circuit, magnetic core one end of electromagnetic control apparatus and the control stick of buckle releaser connect.The advantages that short with arcing, drop-away current adjusts, and dropout precision is high, and security performance is reliable.
Description
Technical field
The invention belongs to Low Voltage Electrical Apparatus, specifically on a kind of plastic enclosure leakage circuit breaker.
Background technology
At present, plastic enclosure leakage circuit breaker, is mainly used in AC-DC Circuit, as distribution or electromotor overload, short circuit,
Infrequently connection and disjunction under under-voltage and over-pressed protection switch and normal operating condition as circuit are used.Existing plastic shell
Leakage circuit breakers generally uses air blowout room, spring complex triip.Its main shortcoming is：Trip arcing length, threads off
Current stability is poor, and dropout precision is low, poor to the person and equipment safety protection reliability.
The content of the invention
The purpose of the present invention is in view of the deficienciess of the prior art, a kind of tripping arcing of offer is short, drop-away current is adjustable
Section, stability are good, and dropout precision is high, to the person and the reliable plastic enclosure leakage circuit breaker of equipment safety protective value.
Technical scheme include pedestal, lower connecting terminal, zero sequence current mutual inductor, the conducting wire that is flexible coupling, buckle releaser,
Operating mechanism, moving contact, static contact, arc-chutes, upper connecting terminal, plastic shell, one end of moving contact is located at static contact goes out
In arc chamber, the other end is connected with the conducting wire one end that is flexible coupling, and the conducting wire other end that is flexible coupling passes through lower connection busbar and lower connecting terminal
Connection, zero sequence current mutual inductor are installed on lower connection busbar, and static contact is connected by upper connection busbar with upper connecting terminal, is moved
Buckle releaser and operating mechanism are connected on contact；Mainly buckle releaser connects an electronics trip gear；The electronics trip gear by
Signal amplification circuit, magnetic silicon controlled switch circuit, electromagnetic control apparatus composition, signal amplification circuit include proportional amplifier, input
Signal conditioner, the input terminal of input signal adjuster are connected by the secondary winding of rectification circuit and zero sequence current mutual inductor,
The output terminal of input signal adjuster is connected with proportional amplifier input terminal, output terminal and the reverse-blocking tetrode thyristor electricity of proportional amplifier
The control terminal connection on road, the electromagnetic coil of electromagnetic control apparatus are connected with magnetic silicon controlled switch circuit, the magnetic core of electromagnetic control apparatus
The control stick of one end and buckle releaser connects；The input signal adjuster is made of first resistor and first resistor device, the first electricity
One end of resistance is connected with rectification circuit output end cathode, and one end of the other end and first resistor device is connecing proportional amplifier just jointly
Input terminal, the other end of first resistor device are connected with power supply common port；The magnetic silicon controlled switch circuit by resistor voltage divider circuit and
Group of Silicon Controlled Rectifier is into the series arm that resistor voltage divider circuit is made of 3rd resistor and the 4th resistance, is connected to proportional amplifier
Between output terminal and power supply common port, the node connection between silicon-controlled grid and 3rd resistor and the 4th resistance is silicon-controlled
Cathode and cathode and electromagnetic coil be connected in series between positive pole and common port the negative input end of proportional amplifier with it is defeated
Second resistance device is connected between outlet, second resistance is connected between proportional amplifier and power supply common port.
It is an advantage of the invention that using electronic trip unit and vacuum interrupter, arcing is short during dropout, and drop-away current adjusts,
Dropout precision is high, reliable to the person and equipment safety protective value.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the circuit diagram of electronics trip gear of the present invention.
Embodiment
Plastic enclosure leakage circuit breaker as shown in Figure 1, including it is pedestal 1, lower connecting terminal 2, zero sequence current mutual inductor 3, soft
Connecting wire 4, buckle releaser, operating mechanism 6, moving contact 7, static contact 8, arc-chutes 9, upper connecting terminal 10 and plastic shell, are moved
One end of contact 7 is located in arc-chutes with static contact 8, and the other end is connected with 4 one end of conducting wire that is flexible coupling, and the conducting wire 4 that is flexible coupling is another
End is connected by lower connection busbar with lower connecting terminal 2, and zero sequence current mutual inductor 3 is installed on lower connection busbar, and static contact 8 is logical
Cross connection busbar to be connected with upper connecting terminal 10, buckle releaser and operating mechanism, buckle releaser and operating mechanism are connected on moving contact 7
Structure be known technology, be not described in detail herein；Buckle releaser connects an electronics trip gear 5, and arc-chutes 9 are gone out using vacuum
Arc chamber, improves arc extinction performance, shortens arcing；The electronics trip gear 5 is by signal amplification circuit, magnetic silicon controlled switch circuit, electricity
Magnetic controller form, signal amplification circuit include proportional amplifier A, input signal adjuster, input signal adjuster it is defeated
Enter end to be connected with the secondary winding of zero sequence current mutual inductor 3 by rectification circuit, the output terminal and ratio of input signal adjuster
Amplifier A input terminals connect, the output current of the secondary winding of zero sequence current mutual inductor 3 after the adjusting of input signal adjuster,
Proportional amplifier input terminal is inputted, realizes the adjusting to drop-away current setting value.The output of proportional amplifier and reverse-blocking tetrode thyristor
The control terminal connection of circuit, it is silicon-controlled by being controlled after the output signal amplification of the secondary winding of zero sequence current mutual inductor 3, improve de-
Detain precision and the protection reliability to the person, equipment.The electromagnetic coil CZ of electromagnetic control apparatus connects with magnetic silicon controlled switch circuit
After be connected between positive pole and common port, the control stick of magnetic core one end of electromagnetic control apparatus and buckle releaser connects, when can
Control silicon conducting when, electromagnetic coil obtain it is electric, magnetic core promote control stick buckle releaser is threaded off.The input signal adjuster is by the first electricity
R1 and first resistor device W1 compositions are hindered, one end of first resistor R1 is connected with rectification circuit output end cathode, the other end and first
One end of resistor W1 connects the positive input terminal of proportional amplifier A jointly, and the other end and the power supply common port of first resistor device W1 connect
Connect, can reach adjusting to drop-away current setting value by adjusting first resistor device W1；The magnetic silicon controlled switch circuit is by electricity
Bleeder circuit and silicon-controlled K compositions are hindered, the series arm that resistor voltage divider circuit is made of 3rd resistor R3 and the 4th resistance R4 should
Series arm is connected between the output terminal of proportional amplifier A and power supply common port, the grid of silicon-controlled K and 3rd resistor R3 and
Node connection between 4th resistance R4, cathode and cathode and the electromagnetic coil CZ of silicon-controlled K are connected in series in positive pole V+
Between power supply common port, second resistance device W2, proportional amplifier are connected between the negative input end and output terminal of proportional amplifier A
Second resistance R2 is connected between A and power supply common port, as shown in Figure 2.Operating mechanism 6 is equipped with manual joystick, for manual operation
Breaker.
Claims (1)
1. a kind of plastic enclosure leakage circuit breaker, including pedestal（1）, lower connecting terminal（2）, zero sequence current mutual inductor（3）, be flexible coupling
Conducting wire（4）, buckle releaser, operating mechanism（6）, moving contact（7）, static contact（8）, arc-chutes（9）, upper connecting terminal（10）And plastics
Shell, moving contact（7）One end and static contact（8）In arc-chutes, the other end and the conducting wire that is flexible coupling（4）One end connects, soft
Connecting wire（4）The other end passes through lower connection busbar and lower connecting terminal（2）Connection, zero sequence current mutual inductor（3）It is installed on down
Connect on busbar, static contact（8）Pass through upper connection busbar and upper connecting terminal（10）Connection, moving contact（7）Upper connection buckle releaser
And operating mechanism, arc-chutes（9）Using vacuum interrupter；It is characterized in that buckle releaser connects an electronics trip gear（5）, the electricity
Sub- trip gear（5）It is made of signal amplification circuit, magnetic silicon controlled switch circuit, electromagnetic control apparatus, signal amplification circuit includes
Proportional amplifier（A）, input signal adjuster, the input terminal of input signal adjuster passes through rectification circuit and zero sequence current mutual inductance
Device（3）Secondary winding connection, the output terminal and proportional amplifier of input signal adjuster（A）Positive input terminal connects, and ratio is put
Big device（A）Output terminal and the control terminal of magnetic silicon controlled switch circuit connect, magnetic core one end of electromagnetic control apparatus and buckle releaser
Control stick connects；The input signal adjuster is by first resistor（R1）And first resistor device（W1）Composition, first resistor（R1）
One end be connected with rectification circuit output end cathode, the other end and first resistor device（W1）One end connect proportional amplifier jointly
（A）Positive input terminal, first resistor device（W1）The other end be connected with power supply common port；The magnetic silicon controlled switch circuit is by resistance
Bleeder circuit and silicon-controlled（K）Composition, resistor voltage divider circuit is by 3rd resistor（R3）With the 4th resistance（R4）The series connection branch of composition
Road, the series arm are connected to proportional amplifier（A）Output terminal and power supply common port between, it is silicon-controlled（K）Grid and
Three resistance（R3）With the 4th resistance（R4）Between node connection, it is silicon-controlled（K）Cathode and cathode and electromagnetic coil（CZ）String
Connection is connected to positive pole（V+）Between power supply common port, proportional amplifier（A）Negative input end and output terminal between connect
Second resistance device（W2）, proportional amplifier（A）Second resistance is connected between power supply common port（R2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711393459.2A CN107946147A (en) | 2017-12-21 | 2017-12-21 | Plastic enclosure leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711393459.2A CN107946147A (en) | 2017-12-21 | 2017-12-21 | Plastic enclosure leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107946147A true CN107946147A (en) | 2018-04-20 |
Family
ID=61941043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711393459.2A Withdrawn CN107946147A (en) | 2017-12-21 | 2017-12-21 | Plastic enclosure leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107946147A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3224098B2 (en) * | 1988-08-01 | 2001-10-29 | イートン コーポレイション | Circuit breaker and current transformer removal method |
| CN202210499U (en) * | 2011-09-20 | 2012-05-02 | 胡俊兵 | Low voltage plastic housing intelligent breaker |
| CN203931970U (en) * | 2014-06-30 | 2014-11-05 | 温州罗格朗电器有限公司 | The extremely breakable monolithic devices residual current circuit breaker of a kind of N |
| CN106655085A (en) * | 2016-08-31 | 2017-05-10 | 兰溪市中冠电气科技有限公司 | Grounding protection apparatus preventing personal electric shock |
-
2017
- 2017-12-21 CN CN201711393459.2A patent/CN107946147A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3224098B2 (en) * | 1988-08-01 | 2001-10-29 | イートン コーポレイション | Circuit breaker and current transformer removal method |
| CN202210499U (en) * | 2011-09-20 | 2012-05-02 | 胡俊兵 | Low voltage plastic housing intelligent breaker |
| CN203931970U (en) * | 2014-06-30 | 2014-11-05 | 温州罗格朗电器有限公司 | The extremely breakable monolithic devices residual current circuit breaker of a kind of N |
| CN106655085A (en) * | 2016-08-31 | 2017-05-10 | 兰溪市中冠电气科技有限公司 | Grounding protection apparatus preventing personal electric shock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180420 |