CN88211529U - Electro-magnetic relay without arc discharging - Google Patents
Electro-magnetic relay without arc discharging Download PDFInfo
- Publication number
- CN88211529U CN88211529U CN 88211529 CN88211529U CN88211529U CN 88211529 U CN88211529 U CN 88211529U CN 88211529 CN88211529 CN 88211529 CN 88211529 U CN88211529 U CN 88211529U CN 88211529 U CN88211529 U CN 88211529U
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- CN
- China
- Prior art keywords
- electromagnetic relay
- pole
- electro
- arc discharge
- relay
- 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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Abstract
The utility model relates to an electro-magnetic relay without arc discharging, which is fit for controlling the switching-on and the switching-off of an alternating current according to the definite electrical signals input from the outside. The secondary pole of a transformer is connected with a rectification circuit and an electro-magnet coil which is connected with a capacitor in parallel, the positive pole of the electro-magnet coil is connected with a resistor in series and connected with the control pole of a bidirectional thyristor, the negative pole of the electro-magnet coil is connected with the T-[1] pole of the bidirectional thyristor, a normally open contact of a relay is connected with the pole T-[1] and the pole T-[2] of the two-direction silicon control, and the alternating current of the circuit can be switched on and switched off by the contact of the relay without arc discharging according to the definite electrical signals input from outside.
Description
The utility model relates to a kind of improved electromagnetic relay technology, particularly a kind of electromagnetic relay that does not have arc discharge device.Be suitable for coming alternating current in the control circuit " to lead to " and " breaking " according to the external world's certain signal of telecommunication of input.
Existing electromagnetic relay mainly contains formations such as iron core, coil, sound contact, armature, return spring.Arc discharge can occur when the electromagnetic relay contact " leads to " in " breaking " circuit alternating current process, make contact burn and influence useful life; Also can make contact melted together when serious, cause relay or entire equipment to be burnt out, influence the dependability of electromagnetic relay.
The utility model is that a kind of improved electromagnetic relay will be provided, and does not have arc discharge when alternating current " is broken " in " leading to " in its contact.
Fig. 1 is a kind of 13 topology views that go to cover of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
With reference to Fig. 1, heat conduction good metal base plate 14 is moulded casting at insulation crust 3, and metal base plate 14 is by dress transformer 4, bidirectional triode thyristor 7, electromagnetic relay 11, rectifier 5, capacitor 10, resistance 6.
Connect load 15, an end 16 of load and nut 9 incoming transport power supplys by Fig. 2 requirement at nut 12; Transformer 4 elementary coupling nut 1, the 2 incoming transport signals of telecommunication, 4 levels of transformer are exported specified low-tension supply connection rectifier 5 and are transferred direct current solenoid 11 in parallel to, it is 100～500 microfarads that solenoid 11 capacitor 10, its discharge processes in parallel can make electromagnetic relay 11 often start the capacity that after fixed contact 8 discharges bidirectional triode thyristor 7 is turn-offed, and optimum value is 300 microfarads.Electromagnetic relay often starts the T of fixed contact 8 bidirectional triode thyristors 7 in parallel
1, T
2The utmost point, T
1The negative pole that connects solenoid 11, resistance of control utmost point G series connection 6 connects the positive pole of solenoid 11; Resistance 6 resistances that can make solenoid 11 rated voltages drop to the maximum trigger current of control utmost point G are 200～2K Ω optimum value 1K Ω.Electromagnetic relay and bidirectional triode thyristor are worked simultaneously.Because bidirectional triode thyristor 7 ON time are only less than 10 microseconds, and more than 8 closures at least 100 microseconds of electromagnetic relay contact, bidirectional triode thyristor 7 first conductings for this reason.Closed behind the relay contact 8 no arc discharges.Cause overload capacity poor owing to exist the equivalent internal resistance controllable silicon 7 in several approximately Europe to generate heat after bidirectional triode thyristor 7 conductings; And relay contact 8 closed contact resistances have only tens milliohms, and big electric current is had bigger overload capacity, and at this moment the electric current overwhelming majority flows through by contact 8, and controllable silicon 7 does not almost have temperature rise.When disconnecting capacitor 10, nut 1,2 ac signals begin discharge.The control utmost point of bidirectional triode thyristor 7 is still trigger current, T when discharging into electromagnetic relay 11 release voltages
1, T
2Be in conducting.Be put into contact 8 when disconnecting fully, voltage has dropped to not trigger current of the bidirectional triode thyristor 7 control utmost points, and electric current turn-offs fully, " leads to " " breaking " alternating current thereby finish no arc discharge.
Claims (3)
1, the electromagnetic relay of no arc discharge device is moulded the box of casting by metal base plate 14, wiring nut 1,2,9,12 and plastic casing 3.The electromagnetic relay of forming no arc discharge device in the box by transformer 4, bidirectional triode thyristor 7, electromagnetic relay 11, rectifier 5, capacitor 10, resistance 6.The T that often starts fixed contact 8 bidirectional triode thyristors 7 in parallel of its feature electromagnetic relay
1, T
2The utmost point.T
1The negative pole that connects solenoid 11, resistance of control utmost point G series connection 6 connects the positive pole of solenoid 11.
2, press the electromagnetic relay of the no arc discharge device of claim 1 regulation, resistance 6 resistances that its feature can make solenoid 11 rated voltages drop to the maximum trigger current of control utmost point G are 200～2K Ω optimum value 1K Ω.
3, press the electromagnetic relay of the no arc discharge device of claim 1 regulation, it is 100～500 microfarads that its characteristic capacitance device 10, its discharge process can make electromagnetic relay 11 often start the capacity that after fixed contact 8 discharges bidirectional triode thyristor 7 is turn-offed, and optimum value is 300 microfarads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88211529 CN88211529U (en) | 1988-03-17 | 1988-03-17 | Electro-magnetic relay without arc discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88211529 CN88211529U (en) | 1988-03-17 | 1988-03-17 | Electro-magnetic relay without arc discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88211529U true CN88211529U (en) | 1988-12-28 |
Family
ID=4844924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88211529 Withdrawn CN88211529U (en) | 1988-03-17 | 1988-03-17 | Electro-magnetic relay without arc discharging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88211529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037726C (en) * | 1994-04-25 | 1998-03-11 | 富士电机株式会社 | Hybrid switch |
| CN1038078C (en) * | 1993-11-26 | 1998-04-15 | 富士电机株式会社 | Hybrid switch using a one-shot firing pulse |
-
1988
- 1988-03-17 CN CN 88211529 patent/CN88211529U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038078C (en) * | 1993-11-26 | 1998-04-15 | 富士电机株式会社 | Hybrid switch using a one-shot firing pulse |
| CN1037726C (en) * | 1994-04-25 | 1998-03-11 | 富士电机株式会社 | Hybrid switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |