CN103077850A - Adjustment device and adjustment method of current relay - Google Patents
Adjustment device and adjustment method of current relay Download PDFInfo
- Publication number
- CN103077850A CN103077850A CN201110329895XA CN201110329895A CN103077850A CN 103077850 A CN103077850 A CN 103077850A CN 201110329895X A CN201110329895X A CN 201110329895XA CN 201110329895 A CN201110329895 A CN 201110329895A CN 103077850 A CN103077850 A CN 103077850A
- Authority
- CN
- China
- Prior art keywords
- current
- relay
- current relay
- spring
- value
- 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.)
- Pending
Links
Images
Abstract
The invention discloses an adjustment device and an adjustment method of a current relay. The adjustment device comprises a power source, a potentiometer, a current detection unit and a spring regulation unit, wherein the power source is used for providing the current relay with current; the potentiometer is used for regulating the value of current passing through the current relay; the current detection unit is used for detecting the value of the current passing through the current relay; the spring regulation unit is used for regulating the extension of a counterforce spring of the current relay; and the spring regulation unit correspondingly regulates the extension of the counterforce spring of the current relay based on the current value detected by the current detection unit. The adjustment device of the current relay is simple to manufacture, lower in cost, small in size, convenient to carry, convenient to wire, simple to operate, wide in application range and strong in practicability; and with the adoption of the adjustment method of the current relay, the adjustment precision is higher and the adjustment can be performed on the field.
Description
Technical field
The present invention relates to a kind of setting device of current relay, particularly relate to a kind of direct current or exchange setting device and a kind of setting method that utilizes this current relay that this setting device realizes of the current relay of adjusting at dual-purpose scene.
Background technology
Electric Traction be unable to do without motor; and the protection of motor mainly is divided into two large classes: voltage protection and current protection, and wherein the detection of electric current protection is again the most important thing, motor current is crossed senior general and is caused motor temperature to raise; insulation damages, thereby cause electrical fire.Because the parameter of motor is different, its current difference is very large, and how the current calibration of current protective device is complementary with motor current and is a difficult point, mate improper or do not have protective effect, or the normal use of impact.
Hoisting machinery and dock anchor winch motor generally adopt the electromagnetic type overcurrent relay as protective device; the electromagnetic type overcurrent relay utilizes the reaction spring active force to regulate the protective current that passes through this overcurrent relay, thereby prevents by the excessive motor damage that causes of the electric current of this overcurrent relay.Yet all there are some shortcomings in present setting device, as passing through clamp on amperemeter, at motor start-up rough the flexible of reaction spring of adjusting of moment; cause precision very low, protective effect reduces greatly, and at the scene; do not possess experimental condition, the scene is adjusted very difficult.
Summary of the invention
The technical problem to be solved in the present invention is the defective that precision is low and adjust in the scene that is not suitable for when overcoming that current relay is adjusted in the prior art, the setting method that a kind of direct current is provided or exchanges the setting device of the current relay of adjusting at dual-purpose scene and utilize this current relay that this setting device realizes.
The present invention solves above-mentioned technical problem by following technical proposals:
The invention provides a kind of setting device of current relay, it comprises a power supply, is used to a current relay that electric current is provided; Its characteristics are that this setting device also comprises: a potentiometer is used for regulating the current value that flows through this current relay; One current detecting unit is for detection of the current value that flows through in this current relay; One spring regulon is for stretching of the reaction spring of regulating this current relay; Wherein, the current value that detects based on this current detecting unit of this spring regulon is correspondingly regulated reaction spring flexible of this current relay
Preferably, the electric current that flows through this current relay is direct current or alternating current.
Preferably, this current relay is overcurrent relay or under current relay.
The present invention also provides the setting method of this current relay that a kind of setting device that utilizes above-mentioned current relay realizes, the method may further comprise the steps: S
1, this potentiometer regulates the current value that flows through in the current relay; S
2, this current detecting unit detects the current value that flows through in this current relay; S
3, this spring regulon regulates reaction spring flexible of this current relay, wherein the current value that detects based on this current detecting unit of this spring regulon is correspondingly regulated reaction spring flexible of this current relay.
Preferably, step S
1In flow through this current relay electric current be direct current or alternating current.
Preferably, step S
3In current relay be overcurrent relay or under current relay.
Positive progressive effect of the present invention is: the setting device of this current relay is made simple, and cost is very low, and volume is small and exquisite, and is easy to carry, and easy-to-connect is simple to operate, and is applied widely, practical.The setting method of this current relay precision of adjusting is very high and can adjust at the scene.
Description of drawings
Fig. 1 is the block diagram of setting device of the overcurrent relay of first embodiment of the invention.
Fig. 2 is the flow chart of the setting method of overcurrent relay of the present invention.
Fig. 3 is the block diagram of setting device of the under current relay of second embodiment of the invention.
Fig. 4 is the flow chart of the setting method of under current relay of the present invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
The first embodiment:
As shown in Figure 1, the setting device of present embodiment comprises a direct current power supply 1, a potentiometer 2, a current detecting unit 3, an overcurrent relay 4 and a spring regulon 5.
This DC power supply 1 provides direct current for this overcurrent relay 4, after the energising, regulate this potentiometer 2 and regulate the current value that flows through this overcurrent relay 4, this current detecting unit 3 detects the current value that flows through this overcurrent relay 4, regulate again reaction spring flexible of this overcurrent relay 4 by this spring regulon 5, to reach best reaction spring active force.
Take the motor setting current as example as 400A, when the electric current in loop reached 400A, the active force of the inductive electromagnetic coil of overcurrent relay 4 reached rated value.If the protective current that need to adjust is 300A; then when loop current is 300A; the active force of inductive electromagnetic coil is 0.75 times of rated value; need to regulate by this spring regulon 5 reaction spring flexible of this overcurrent relay 4 this moment; make the active force of reaction spring reach 0.75 times of active force rated value of inductive electromagnetic coil, this i.e. best reaction spring active force.
The present invention utilizes the setting method of this overcurrent relay that the setting device of described overcurrent relay realizes, its operation principle is: this potentiometer is regulated the current value that flows through in the overcurrent relay; This current detecting unit detects the current value that flows through in this overcurrent relay; This spring regulon is regulated reaction spring flexible of this current relay, and the current value after wherein this spring regulon detects based on this current detecting unit is correspondingly regulated reaction spring flexible of this overcurrent relay.
As shown in Figure 2, the setting method of the overcurrent relay of first embodiment of the invention may further comprise the steps:
The resistance adjustment of step 100, potentiometer 2 is to maximum.
The second embodiment:
As shown in Figure 3, the setting device of present embodiment comprises: an AC power 1, a potentiometer 2, a current detecting unit 3, a under current relay 4, a spring regulon 5 exchange with one and turn direct current unit 6.
This AC power 1 provides alternating current for this under current relay 4, after the energising, this interchange turns direct current unit 6 and converts this alternating current to direct current, regulate this potentiometer 2 and regulate the current value that flows through this under current relay 4, this current detecting unit 3 detects the current value that flows through this under current relay 4, regulate again reaction spring flexible of this under current relay 4 by regulating this spring regulon 5, to reach best reaction spring force value.
Take the motor setting current as example as 400A, when the electric current in loop reached 400A, the active force of the inductive electromagnetic coil of under current relay 4 reached rated value.If the protective current that need to adjust is 300A; then when loop current is 300A; the active force of inductive electromagnetic coil is 0.75 times of rated value; need to regulate by this spring regulon 5 reaction spring flexible of this under current relay 4 this moment; make the active force of reaction spring reach 0.75 times of active force rated value of inductive electromagnetic coil, this i.e. best reaction spring active force.
The present invention utilizes the setting method of this under current relay that the setting device of described overcurrent relay realizes, its operation principle is: this potentiometer is regulated the current value that flows through in the under current relay; This current detecting unit detects the current value that flows through in this under current relay; This spring regulon is regulated reaction spring flexible of this under current relay, and the current value after wherein this spring regulon detects based on this current detecting unit is correspondingly regulated reaction spring flexible of this under current relay.
As shown in Figure 4, the setting method of the under current relay of second embodiment of the invention may further comprise the steps:
The resistance adjustment of step 100, potentiometer 2 is to maximum.
Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited by appended claims.Those skilled in the art can make various changes or modifications to these execution modes under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall into protection scope of the present invention.
Claims (6)
1. the setting device of a current relay, it comprises a power supply, is used to current relay that electric current is provided; It is characterized in that this setting device also comprises:
One potentiometer is used for regulating the current value that flows through this current relay;
One current detecting unit is for detection of the current value that flows through in this current relay; And
One spring regulon is for stretching of the reaction spring of regulating this current relay;
Wherein, the current value that detects based on this current detecting unit of this spring regulon is correspondingly regulated reaction spring flexible of this current relay.
2. setting device as claimed in claim 1 is characterized in that, the electric current that flows through this current relay is direct current or alternating current.
3. setting device as claimed in claim 1 is characterized in that, this current relay is overcurrent relay or under current relay.
4. the setting method of the current relay realized of the setting device of a current relay as claimed in claim 1 is characterized in that this setting method may further comprise the steps:
S
1, this potentiometer regulates the current value that flows through in this current relay;
S
2, this current detecting unit detects the current value that flows through in this current relay;
S
3, this spring regulon regulates reaction spring flexible of this current relay, wherein the current value that detects based on this current detecting unit of this spring regulon is correspondingly regulated reaction spring flexible of this current relay.
5. the setting method of current relay as claimed in claim 4 is characterized in that, step S
1In flow through this current relay electric current be direct current or alternating current.
6. the setting method of current relay as claimed in claim 4 is characterized in that, step S
3In current relay be overcurrent relay or under current relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329895XA CN103077850A (en) | 2011-10-25 | 2011-10-25 | Adjustment device and adjustment method of current relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329895XA CN103077850A (en) | 2011-10-25 | 2011-10-25 | Adjustment device and adjustment method of current relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103077850A true CN103077850A (en) | 2013-05-01 |
Family
ID=48154348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110329895XA Pending CN103077850A (en) | 2011-10-25 | 2011-10-25 | Adjustment device and adjustment method of current relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103077850A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047853U (en) * | 1988-12-20 | 1989-11-15 | 凌东征 | Overload protective system for ac motor |
| US5721474A (en) * | 1995-08-11 | 1998-02-24 | Samsung Electronics Co., Ltd. | Method and apparatus for preventing excessive current flow in a motor |
| CN1926653A (en) * | 2005-04-20 | 2007-03-07 | 三菱电机株式会社 | Overcurrent relay |
| CN201032683Y (en) * | 2007-01-09 | 2008-03-05 | 高子泉 | Overcurrent protection circuit |
| CN101226854A (en) * | 2007-12-03 | 2008-07-23 | 江苏西蒙奇通电器有限公司 | Electric control circuit apparatus for relay |
-
2011
- 2011-10-25 CN CN201110329895XA patent/CN103077850A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047853U (en) * | 1988-12-20 | 1989-11-15 | 凌东征 | Overload protective system for ac motor |
| US5721474A (en) * | 1995-08-11 | 1998-02-24 | Samsung Electronics Co., Ltd. | Method and apparatus for preventing excessive current flow in a motor |
| CN1926653A (en) * | 2005-04-20 | 2007-03-07 | 三菱电机株式会社 | Overcurrent relay |
| CN201032683Y (en) * | 2007-01-09 | 2008-03-05 | 高子泉 | Overcurrent protection circuit |
| CN101226854A (en) * | 2007-12-03 | 2008-07-23 | 江苏西蒙奇通电器有限公司 | Electric control circuit apparatus for relay |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105119388A (en) | Current transformer energy-obtaining power supply working in wide current range | |
| CA2610566A1 (en) | Input current or voltage limited power supply | |
| CN104579070B (en) | Contactless on-load automatic regulating distribution transformer and the method for carrying out automatic Regulation | |
| CN103973217A (en) | Device for restraining PID effect of photovoltaic panel | |
| MA39738A (en) | ORDERING PROCEDURE FOR A CHARGING DEVICE INTENDED FOR AN ELECTRIC VEHICLE | |
| CN102790405A (en) | Device and method for controlling magnetizing inrush current through wave chopping and voltage regulating | |
| CN106505846B (en) | A kind of soft starting circuit and soft-start method and direct-current charging post | |
| JP2014128181A (en) | Network type charge system and charge facility | |
| CN105356545A (en) | Power supply device for electric safety acquisition module | |
| CN103077850A (en) | Adjustment device and adjustment method of current relay | |
| EP2104198A3 (en) | Systems And Methods Involving Protection Of Superconducting Generators For Power Applications | |
| CN203278211U (en) | Transformer excitation inrush current eliminating device | |
| CN105576988B (en) | A kind of coupling energy taking power supply adapting to the work of wide dynamic range bus current | |
| CN103001334A (en) | Suspension power extraction device and suspension power extraction method | |
| CN205430069U (en) | Coupling draw -out power supply of adaptation wide dynamic range bus current work | |
| CN104238615A (en) | Voltage regulator capable of realizing overload protection based on software control | |
| Cheang et al. | High efficiency powering system for wireless sensor for AC monitoring in smart grid applications | |
| TW201515377A (en) | Inverting apparatus and control method thereof | |
| CN102354943B (en) | A kind of method of work of electronic trip unit | |
| CN204927187U (en) | Current -limiting equipment | |
| CN110943548A (en) | Circuit for obtaining electric energy | |
| CN204732846U (en) | The under-voltage release of mold cased circuit breaker | |
| CN204179980U (en) | A kind of generating set with voltage stabilization and current stabilization control circuit | |
| WO2012028833A3 (en) | Cyclical supply method and device, and detection device comprising same | |
| CN209946364U (en) | Maintenance and protection detection device of fire-fighting power supply working state monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130501 |