CN2669207Y - Time tester of oven-current protection relay of heat relay - Google Patents
Time tester of oven-current protection relay of heat relay Download PDFInfo
- Publication number
- CN2669207Y CN2669207Y CNU2003201044998U CN200320104499U CN2669207Y CN 2669207 Y CN2669207 Y CN 2669207Y CN U2003201044998 U CNU2003201044998 U CN U2003201044998U CN 200320104499 U CN200320104499 U CN 200320104499U CN 2669207 Y CN2669207 Y CN 2669207Y
- Authority
- CN
- China
- Prior art keywords
- relay
- terminals
- timer
- heat
- power
- 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.)
- Expired - Fee Related
Links
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract 6
- 239000010703 silicon Substances 0.000 claims abstract 6
- 230000002146 bilateral effect Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model is a time tester of oven-current protection relay of heat relay, belonging to the technical field of the unknown time interval measured by an electric device. The utility model solves the technical problem that the utility model provides the time tester of the heat relay used by the users. The technical scheme solving the technical problems comprises a current controller, a reducing transformer and a timer. The current controller comprises adjustable resistances R<1>, C<1>, a bidirectional controlled silicon and a bidirectional diode. A constantly closed contact of the heat relay, the bidirectional controlled silicon and a junior coil of the reducing transformer compose a series circuit which is connected with the alternating current power supply. The R<1> and the C<1> which are in series connected with the circuit are in parallel connected with the series circuit composed by the bidirectional controlled silicon and the junior coil of the reducing transformer. The bidirectional diode is connected between the joint point of the R<1> and the C<1> and a control electrode of the bidirectional controlled silicon. A secondary coil of the reducing transformer is connected with a heat element of the heat relay. The timer measures the time interval from the heat element of the heat relay electrified to the constantly closed contact cut off. The utility model is used on measuring the time of the heat relay. The beneficial effect is that the utility model can measure the heat relay in use.
Description
Technical field the utility model belongs to the field of instrumentation technology that power device is measured the unknown time interval.
Background technology is equipped with electrothermal relay in electromotor control circuit and other subscriber's line circuits, when electromotor overload, phase shortage or circuit overloads, electrothermal relay should disconnect in official hour, avoids damaging with holding circuit and consuming device.The test of overload trip time in production plant, is surveyed during by load current at present just.But the user in use, owing to do not know that electrothermal relay whether can operate as normal, because its performance change can not in time disconnect, loses protective effect sometimes under overload, phase shortage situation, causes burning out circuit and consuming device, even breaking out of fire.Still the electrothermal relay tester that does not have the special use of using for the user in the market.
Summary of the invention technical matters to be solved provides a kind of electrothermal relay over-current protection relay time test instrument of the special use of using for the user.
The technical scheme that solves its technical matters is as follows: electrothermal relay over-current protection relay time test instrument comprises step-down transformer, current controller and timer.Step-down transformer is the transformer of elementary circle input 220V, secondary loops output 0～10V, exportable electric current 0.5～1000 peace.Current controller comprises bidirectional triode thyristor SCR
1, adjustable resistance R
1, capacitor C
1And bilateral diode D
1Step-down transformer comprises elementary circle L
1And time polar circle L
2Timer comprises electrical secondmeter and relay J
1The normally closed contact K of tested electrothermal relay
0Upper end and power switch K
1An end connect K
0The lower end and the bidirectional triode thyristor SCR of current controller
1Last terminals connect K
1The live wire of another termination 220V AC power, adjustable resistance R
1An end and bidirectional triode thyristor SCR
1Last terminals connect its other end and capacitor C
1An end connect C
1The ground wire of another termination 220V AC power, bilateral diode D
1An end and R
1And C
1Tie point connect the other end and bidirectional triode thyristor SCR
1The control utmost point connect.The elementary circle L of step-down transformer
1Be connected bidirectional triode thyristor SCR
1Following terminals and the ground wire of 220V AC power between, inferior polar circle L
2Arbitrary thermal element T mutually of series current table and electrothermal relay
0Connect.Timer comprises electrical secondmeter and relay J
1, a termination 220V AC power ground wire of the terminals of electrical secondmeter, other end series connection time switch K
2Be connected relay J with 220V AC power live wire
1Coil be connected thermal relay normally closed contact K
0Following terminals and 220V AC power ground wire between, relay J
1Normally opened contact two ends respectively with the working coil L of electrical secondmeter
3Two ends connect.Timer can also adopt digital timer.
Adjustable resistance R
1With C
1Form series circuit, adjust R
1Can change bidirectional triode thyristor SCR
1Conduction angle, thereby adjust the elementary circle of step-down transformer and the voltage of secondary loops.The thermal element of electrothermal relay is adjusted the secondary loops short circuit of step-down transformer adjustable resistance and can be changed by electrothermal relay thermal element T
0Electric current.Connecting K switch
1Be that electric current passes through electrothermal relay thermal element T
0The time, connect time switch K
2, electrical secondmeter picks up counting, as the closing contact K of electrothermal relay
0At thermal element T
0When the temperature action that produces moves down, J
1Normally opened contact be converted to closure state.Working coil L with electrical secondmeter
3Short circuit, electrical secondmeter stops timing.
Beneficial effect: the utility model is applied to the test of the time of electrothermal relay and over-current protection relay.Beneficial effect is to test electrothermal relay in the circuit and over-current protection relay at any time, in time finds out of order electrothermal relay and over-current protection relay, and is changed, and pre-burnout-proof circuit and consuming device prevent that fire from taking place.Enterprise and other users had great economic interests.Simple in structure, production cost is low, is suitable in the enterprise that uses electrical equipment and electrical, and applies in the protection of various civilian circuit.
Description of drawings:
Fig. 1 is a circuit structure diagram of the present utility model.Fig. 1 is described as follows: 1 is current controller, and 2 is step-down transformer, and 3 is timer.
A kind of embodiment of embodiment is as follows: current controller comprises adjustable resistance R
1, C
1, bidirectional triode thyristor SCR
1And bilateral diode.Step-down transformer 2 comprises L
1And time polar circle L
2Normally closed contact K by tested electrothermal relay
0With bidirectional triode thyristor SCR
1And the elementary circle L of step-down transformer 2
1The series circuit of being formed is connected with AC power, by R
1And C
1The series circuit of forming with by bidirectional triode thyristor SCR
1And step-down transformer 2 elementary circle L
1The series circuit parallel connection of being formed, bilateral diode D
1Be connected R
1And C
1Tie point and bidirectional triode thyristor SCR
1The control utmost point between.The secondary loops L of step-down transformer 2
2Thermal element T with reometer and tested electrothermal relay
0Connect into series circuit.Timer 3 comprises relay J
1And electrical secondmeter, electrical secondmeter circuit series connection time switch K
2Be connected with AC power.Relay J
1Coil be connected thermal relay normally closed contact K
0Between following terminals and the AC power ground wire, J
1Normally opened contact in parallel with the electrical secondmeter working coil.The power of step-down transformer 2 is 100VA, and the bidirectional triode thyristor rated current is 5A, and the bilateral diode rated current is 1A.
Claims (2)
1, electrothermal relay over-current protection relay time test instrument is characterized in that comprising current controller (1), step-down transformer (2) and timer (3); Current controller (1) comprises bidirectional triode thyristor SCR
1, adjustable resistance R
1, capacitor C
1And bilateral diode D
1Step-down transformer (2) comprises elementary circle L
1And time polar circle L
2Timer (3) comprises electrical secondmeter and relay J
1The normally closed contact K of tested electrothermal relay
0Last terminals and power switch K
1One end of terminals connects, K
0Following terminals and the two-way adjustable silicon SCR of current controller (1)
1Last terminals connect K
1The other end be connected adjustable resistance R with 220V AC power live wire
1An end and two-way adjustable silicon SCR
1Last terminals connect its other end and capacitor C
1An end connect C
1Another termination 220V AC power ground wire, bilateral diode D
1An end and R
1And C
1Tie point connect another termination bidirectional triode thyristor SCR
1The control utmost point; The elementary circle L of step-down transformer (2)
1Be connected bidirectional triode thyristor SCR
1Following terminals and the ground wire of 220V AC power between, inferior polar circle L
2Arbitrary T of thermal element mutually of series current table and electrothermal relay
0Connect; Timer (3) comprises electrical secondmeter and relay J
1, a termination 220V AC power ground wire of electrical secondmeter terminals, other end series connection time switch K
2Be connected relay J with 220V AC power live wire
1Coil be connected the normally closed contact K of electrothermal relay
0Following terminals and 220V AC power ground wire between, relay J
1The two ends of normally opened contact be connected with the two ends of the working coil of electrical secondmeter respectively.
2,, it is characterized in that timer wherein adopts digital timer according to the described electrothermal relay over-current protection relay of claim 1 time test instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201044998U CN2669207Y (en) | 2003-12-19 | 2003-12-19 | Time tester of oven-current protection relay of heat relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201044998U CN2669207Y (en) | 2003-12-19 | 2003-12-19 | Time tester of oven-current protection relay of heat relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669207Y true CN2669207Y (en) | 2005-01-05 |
Family
ID=34438580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201044998U Expired - Fee Related CN2669207Y (en) | 2003-12-19 | 2003-12-19 | Time tester of oven-current protection relay of heat relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669207Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362356C (en) * | 2005-07-06 | 2008-01-16 | 李迪琪 | Fault relay injection tester and testing method |
| CN101216533B (en) * | 2008-01-04 | 2010-06-02 | 广东格兰仕集团有限公司 | Hot cutter automatic checkout equipment and its working method |
| CN102313848A (en) * | 2010-06-30 | 2012-01-11 | 山东新焦点龙盛汽车配件有限公司 | Overcurrent protector detection device |
| CN114895131A (en) * | 2022-05-25 | 2022-08-12 | 杭州星帅尔电器股份有限公司 | Measurement and control system for testing time parameters of thermal protector and control method |
-
2003
- 2003-12-19 CN CNU2003201044998U patent/CN2669207Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362356C (en) * | 2005-07-06 | 2008-01-16 | 李迪琪 | Fault relay injection tester and testing method |
| CN101216533B (en) * | 2008-01-04 | 2010-06-02 | 广东格兰仕集团有限公司 | Hot cutter automatic checkout equipment and its working method |
| CN102313848A (en) * | 2010-06-30 | 2012-01-11 | 山东新焦点龙盛汽车配件有限公司 | Overcurrent protector detection device |
| CN114895131A (en) * | 2022-05-25 | 2022-08-12 | 杭州星帅尔电器股份有限公司 | Measurement and control system for testing time parameters of thermal protector and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |