CN2313287Y - Magnetic starter - Google Patents
Magnetic starter Download PDFInfo
- Publication number
- CN2313287Y CN2313287Y CN 97224380 CN97224380U CN2313287Y CN 2313287 Y CN2313287 Y CN 2313287Y CN 97224380 CN97224380 CN 97224380 CN 97224380 U CN97224380 U CN 97224380U CN 2313287 Y CN2313287 Y CN 2313287Y
- Authority
- CN
- China
- Prior art keywords
- phase
- starting switch
- magnetic
- transformer
- detection circuit
- 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
- 239000007858 starting material Substances 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims abstract description 9
- 239000000428 dust Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
A magnetic starter able to detect phase-failure power supply or current features that a transformer or current detecting circuit is additionally arranged in the existing dust-proof box, the upper ends of both sides of fixing frame are connected to contact block, one end of magnetic steel sheet in fixing frame is inserted in the hole of electromagnetic coil, the other end is connected to connecting piece, and the electromagnetic coil is serially connected to starting switch. The phase line power supply is connected by pressing the starting switch, if the phase line is broken, the transformer detects no electricity, and if the connecting line is broken, the current detection circuit detects no-load current.
Description
The utility model is a kind of magnetic force starting device, and it especially can detect the magnetic starter of phase shortage power supply or electric current.
At present: existing magnetic starter structure is to be linked by dust shield case, fixed mount, solenoid, magnetic links, contact block, brace, and magnetic links one end other end in solenoid connects tightly with brace. generation magnetic force adhesive magnetic links makes brace contact with contact block to reach phase line power supply and connecting line electric connection behind solenoid two ends access power supply.But; a lot of magnetic starters all are the three phase mains connectivity structures; only be to adopt thermoelectric device power-off protection; magnetic starter was worked equally when a central phase line phase failure non-transformer or was linked to each other wiring disconnecting no-load current; this just causes the three phase electric machine two-phase energising of connection; the load current of motor increases as easy as rolling off a log being burnt, so general magnetic starter can not be when a phase line phase failure have electricity or one makes the automatic stop power-off protection when linking to each other wiring disconnecting no-load current.
The purpose of this utility model provides a kind of magnetic starter, and it can not only make phase line, connecting line electric connection, and can detect phase line phase failure non-transformer, connecting line disconnecting no-load current and do the automatic stop outage.
The purpose of this utility model is achieved in that in dust shield case, two upper end faces of fixed mount and a plurality of contact block connect tight, magnetic links one end stretches in the solenoid in the fixed mount, the other end and brace connect tightly, solenoid is connected in series with the starting switch electricity, be provided with input that a transformer or current detection circuit make transformer with in the wiring that links to each other be electrically connected, output is connected with the current detection circuit working power end, the input of current detection circuit is connected with induced current on the connecting line, control switch and starting switch in the circuit and connecting joins.When pressing starting switch, electricity leads on the solenoid and to produce magnetic force adhesive magnetic links the three-phase brace is contacted with three winding contact blocks, phase line power supply and connecting line electric connection, transformer energising simultaneously, current detection circuit obtains working power the induced current on the connecting line is detected amplification, and the control switch in the circuit transfers the connection shape to and replaces starting switch to make magnetic starter working properly.If the phase line phase failure that is electrically connected with transformer, transformer does not have electricity and inserts current detection circuit and do not have the working power control switch and transfer the disconnection shape to, or any connecting line disconnecting no-load current all can make induced current amplifier one tunnel transfer electronegative potential output to link in the three input AND circuit, the output of gate circuit electronegative potential is linked makes control switch transfer the disconnection shape in the ON-OFF control circuit, cut off the solenoid power supply and make no magnetic force, the three-phase brace separates with contact block, phase line power supply and connecting line electricity disconnect, thereby reach the phase line non-transformer, but the purpose of connecting line no-load current automatic stop outage.
Further specify below in conjunction with drawings and Examples.
Fig. 1 is a circuit diagram of the present utility model.
Fig. 2 is a magnetic starter embodiment vertical section structural map.
Fig. 3 is I-I cutaway view of Fig. 2.
Among the figure 1, dust shield case 2, brace 3, contact block 4, magnetic links 5, solenoid 6, fixed mount 7, transformer 8, current detection circuit 9, control switch 10, starting switch
In Fig. 1 circuit, the three phase mains phase line connects with contact block (3) first and joins, then contact block and three-phase connecting line join for another, starting switch (10) K1K2 and solenoid (5) J1, the electricity serial connection, with magnetic links (4), brace (2), contact block (3) connects to K3 and constitutes magnetic starter, K2 is that normally closed K1 is a normal off, transformer (7) J3 input is electrically connected with middle connecting line, force is to press starting switch (10) just to have voltage output to link current detection circuit (8) power end under three phase mains is normal, testing circuit (8) is by three road feel induced current amplifiers, three inputs and door device, ON-OFF control circuit constitutes, the circuit input contacts with three-phase connecting line appearance, control switch (9) and starting switch (10) and connecting joins, control switch (9) is the normal off shape, must be after pressing starting switch (10), just transfer the connection shape during none disconnecting of three-phase connecting line to.
In embodiment shown in Fig. 2, starting switch (10) is fixed on dust shield case (1) case surface so that operation, fixed mount (6), transformer (7), current detection circuit (8) plate is arranged in order in dust shield case (1) and connects tightly as shown in Figure 3 with its chassis that dust shield case (1) is a rectangle, magnetic links (4) is two E types at fixed mount (6) central fore-and-aft vertical plane, first E type and brace (2) connect tightly, its E type two ends mid point stretches in solenoid (4) circular hole, (6) two surfaces of contact block (3) and fixed mount connect tight so that contact with brace (2), and control switch (9) is solded in current detection circuit (8) plate and becomes overall structure.
Claims (1)
- A kind of magnetic starter, in dust shield case, two upper ends of fixed mount and contact block connect tightly, magnetic links one end stretches in the solenoid bore in the fixed mount, the other end connects tightly with brace, solenoid is connected in series with the starting switch electricity, it is characterized in that: transformer input with in the wiring electrical connection that links to each other, output is connected with the current detection circuit power end, and current detection circuit input is connected with induced electricity on the connecting line; Control switch in the circuit and starting switch and connecting joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224380 CN2313287Y (en) | 1997-08-18 | 1997-08-18 | Magnetic starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224380 CN2313287Y (en) | 1997-08-18 | 1997-08-18 | Magnetic starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2313287Y true CN2313287Y (en) | 1999-04-07 |
Family
ID=33938750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224380 Expired - Fee Related CN2313287Y (en) | 1997-08-18 | 1997-08-18 | Magnetic starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2313287Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062469A (en) * | 2014-06-13 | 2014-09-24 | 苏州华徕光电仪器有限公司 | Connector for high-voltage circuit breaker test based on magnetic steel rotation |
-
1997
- 1997-08-18 CN CN 97224380 patent/CN2313287Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062469A (en) * | 2014-06-13 | 2014-09-24 | 苏州华徕光电仪器有限公司 | Connector for high-voltage circuit breaker test based on magnetic steel rotation |
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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 |