CN204241607U - SCR commutating DC exports Leaked Current of Line to Ground warning circuit - Google Patents
SCR commutating DC exports Leaked Current of Line to Ground warning circuit Download PDFInfo
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- CN204241607U CN204241607U CN201420670093.4U CN201420670093U CN204241607U CN 204241607 U CN204241607 U CN 204241607U CN 201420670093 U CN201420670093 U CN 201420670093U CN 204241607 U CN204241607 U CN 204241607U
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Abstract
The utility model relates to SCR commutating DC and exports Leaked Current of Line to Ground warning circuit, mainly comprises: simulation leakage tests circuit, DC resistance bridge, sensitivity adjusting circuit, full bridge rectifier, electric leakage display, light-coupled isolation on-off circuit, leakage-current alarm circuit and control circuit, wherein, the output terminal of DC resistance bridge circuit is connected with sensitivity adjusting circuit input end, and the output terminal of DC resistance bridge circuit is wherein connected with outer cabinet one end, the output terminal of sensitivity adjusting circuit is connected with full bridge rectifier input end, full bridge rectifier output terminal shows with electric leakage, light-coupled isolation on-off circuit input end connects, light-coupled isolation switching circuitry output and leakage-current alarm circuit, control circuit input end connects, the output terminal of control circuit is connected to six triggers, the output terminal of six triggers is connected to six pulse silicon controlled rectifier driving circuits, in addition, simulation leakage tests circuit is directly connected with DC resistance bridge, the utility model has the advantages that: direct current exports battery cabinet leakproof, ensure the life security of operating personnel.
Description
Technical field
The utility model relates to uninterrupted power source, inverter applications technical field, and particularly direct current exports the six pulse SCR rectification circuit that Leaked Current of Line to Ground is reported to the police, and accurate is that SCR commutating DC exports Leaked Current of Line to Ground warning circuit.
Background technology
In uninterrupted power source (UPS), rectification charger system, especially to lead-acid battery charging, lead-acid battery after long-term use, acid gas is more or less had to emerge, accumulate for a long time at battery case, cause direct current to export battery cabinet electric leakage, bring life to endanger to operating personnel.
Causing SCR commutating DC to export Leaked Current of Line to Ground reason has multiple; the insulation course quality of primary and secondary winding to transformer core as inputted isolating transformer is bad; this reason cause electric leakage can interchange input add earth leakage circuit-breaker; just can play and the life of operating personnel is protected; but if rectification exports body leakage after input isolating transformer; interchange input adds that the method for earth leakage circuit-breaker just can not play and protects the life of operating personnel, forms prestige association to the life of operating personnel.
Summary of the invention
Leaked Current of Line to Ground warning circuit is exported for above-mentioned relevant SCR commutating DC, direct current cannot be realized export battery cabinet leakproof, ensure the life security of operating personnel, the experience of this area work is engaged in the utility model people accumulation for many years, through repeatedly studying demonstration, obtain generation of the present utility model eventually, the utility model provides SCR commutating DC to export Leaked Current of Line to Ground warning circuit.
The technical scheme that the inner structure that the utility model SCR commutating DC exports Leaked Current of Line to Ground warning circuit adopts is: for achieving the above object, mainly comprise: simulation leakage tests circuit, DC resistance bridge, sensitivity adjusting circuit, full bridge rectifier, electric leakage display, light-coupled isolation on-off circuit, leakage-current alarm circuit and control circuit, wherein, the output terminal of DC resistance bridge circuit is connected with sensitivity adjusting circuit input end, and the output terminal of DC resistance bridge circuit is wherein connected with outer cabinet one end, the output terminal of sensitivity adjusting circuit is connected with full bridge rectifier input end, full bridge rectifier output terminal shows with electric leakage, light-coupled isolation on-off circuit input end connects, light-coupled isolation switching circuitry output and multivibrator, control circuit input end connects, the output terminal of multivibrator is connected with leakage-current alarm circuit, the output terminal of control circuit is connected to six triggers, the output terminal of six triggers is connected to six pulse silicon controlled rectifier driving circuits, in addition, simulation leakage tests circuit is directly connected with DC resistance bridge.
According to the invention described above scheme, it can realize SCR commutating DC and export Leaked Current of Line to Ground warning; When not having drain conditions, the every bridge electric current on resistance bridge is consistent, and bridge output is zero, and electric leakage display lamp does not work, and leakage-current alarm hummer not sound, control circuit and SCR rectification circuit normally works, and direct current normally exports.When there is drain conditions, the consistent balance of every bridge electric current on resistance bridge is destroyed, and bridge output be high voltage after full-bridge rectification, and the display lamp that leaks electricity is bright, the work of SCR rectification circuit closed by leakage-current alarm buzzer rings, control circuit, and direct current is closed and exported.Both support equipment normally runs like this, and protect the account life security of operating personnel, and it is low to realize cost, dirigibility is high, and circuit is simple, practical
.
The major advantage that the utility model SCR commutating DC exports Leaked Current of Line to Ground warning circuit is:
SCR commutating DC exports Leaked Current of Line to Ground warning circuit, and direct current exports when leaking electricity to battery cabinet and gives the alarm and powered-down, guarantees the life security of operating personnel.
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation that SCR commutating DC of the present invention exports Leaked Current of Line to Ground warning circuit.
Fig. 2 is the schematic diagram that SCR commutating DC of the present invention exports Leaked Current of Line to Ground warning circuit.
Accompanying drawing 1 description of symbols: 1, simulate leakage tests circuit 2, DC resistance bridge circuit 3, sensitivity adjusting circuit 4, full bridge rectifier 5, electric leakage display 6, light-coupled isolation on-off circuit 7, control circuit 8, multivibrator 9, leakage-current alarm circuit 10, six pulse silicon controlled rectifier driving circuit 11, six trigger.
Embodiment
Be illustrated in fig. 1 shown below, the utility model SCR commutating DC exports the inner structure of Leaked Current of Line to Ground warning circuit, the technical scheme adopted is: shown in Figure 1, be the structural representation that SCR commutating DC of the present invention exports Leaked Current of Line to Ground warning circuit, it includes: simulation leakage tests circuit 1, DC resistance bridge 2, sensitivity adjusting circuit 3, full bridge rectifier 4, electric leakage display 5, light-coupled isolation on-off circuit 6, multivibrator 8, leakage-current alarm circuit 9, control circuit 7, wherein, the output terminal of DC resistance bridge circuit 2 is connected with sensitivity adjusting circuit 3 input end, and the output terminal of DC resistance bridge circuit 2 is wherein connected with outer cabinet one end, the output terminal of sensitivity adjusting circuit 3 is connected with full bridge rectifier 4 input end, full bridge rectifier 4 output terminal and electric leakage display 5, light-coupled isolation on-off circuit 6 input end connects, light-coupled isolation switch 6 circuit output end and multivibrator 8, control circuit 7 input end connects, the output terminal of multivibrator 8 is connected with leakage-current alarm circuit 9, the output terminal of control circuit 7 is connected to six triggers 11, the output terminal of six triggers 11 is connected to six pulse silicon controlled rectifier driving circuits 10, in addition, simulation leakage tests circuit 1 is directly connected with DC resistance bridge 2.
As shown in Figure 2, be that SCR commutating DC of the present invention exports Leaked Current of Line to Ground warning circuit principle schematic in a concrete example.
In shown in Fig. 2, the concrete example of simulation leakage tests circuit 1 of the present invention, DC resistance bridge 2, sensitivity adjusting circuit 3, full bridge rectifier 4, electric leakage display 5, light-coupled isolation on-off circuit 6, leakage-current alarm circuit 9, control circuit 7 is illustrated respectively, in shown in Fig. 2, simulation leakage tests circuit 1 is primarily of testing button S1, and resistance R15 forms; DC resistance bridge 2 is made up of resistance R11, R12, R13, R14; Sensitivity adjusting circuit 3 is made up of adjustable resistance W1; Full bridge rectifier 4 is made up of diode D1, D2, D3, D4; Electric leakage display 5 is made up of LED1; Light-coupled isolation on-off circuit 6 is made up of U1; Multivibrator 8 is by resistance R1, R2, R3, R8, R9, R10, and electrochemical capacitor C1, C2, diode D5, operational amplifier U1 form; Leakage-current alarm circuit 9 is by resistance R4, R5, and triode Q1, hummer BUZZ form; Control circuit 7 is made up of resistance R6, R7, triode Q2.
Wherein, in shown in Fig. 2, C1 is resonant capacitance, and C2 is noise filter capacitor, to eliminate noise jamming.
The DC voltage that SCR rectification exports passes through by resistance R1, R2, R3, the DC resistance bridge that R4 is formed, during normal condition, every bridge electric current on resistance bridge is consistent, bridge output is zero (in figure, A point is consistent with the component voltage of B point), A, B point is without pressure reduction, electric leakage display lamp LED1 does not work, the not conducting of light-coupled isolation switch, leakage-current alarm hummer does not ring (by R1, R2, R3, R4, R5, R8, R9, R10, electrochemical capacitor C1, C2, diode D5, operational amplifier U1 forms multivibrator owing to not having the operating voltage of VCC, therefore stop oscillation, triode Q1 ends).Triode Q2 in control circuit ends in succession, and Q2 current collection very high level, SCR rectification circuit normally works, and direct current normally exports.When there is drain conditions, the output terminal of resistance bridge circuit wherein one end (in figure A point) is connected with outer cabinet, the consistent balance of every bridge electric current on resistance bridge is destroyed, bridge output is non-vanishing (in figure, there is voltage difference in the dividing point A point of R11 and R12 and the dividing point B point of R13 and R14), through diode D1, D2, D3, D4 forms full-bridge rectification and exports a Unidirectional direct-current voltage, LED1 is bright for electric leakage display lamp, light-coupled isolation switch conduction, leakage-current alarm buzzer rings is (by R1, R2, R3, R4, R5, R8, R9, R10, electrochemical capacitor C1, C2, diode D5, operational amplifier U1 forms multivibrator owing to obtaining the operating voltage of VCC, therefore produce vibration, triode Q1 works, hummer sends tweeting sound rapidly).Triode Q2 successive conductive in control circuit, Q2 current collection very low level, SCR rectification circuit quits work, and direct current is closed and exported.
In a concrete implementation, in course of normal operation, order+VCC=12V.
In Fig. 2, D1, D2, D3, D4 are commutation diode, and C1 is filtering electrolysis.Adjustable resistance W1 is electric leakage sensitivity adjustment resistance, and present case setting range is 2mA---30mA
The SCR commutating DC of the invention described above exports Leaked Current of Line to Ground warning circuit, utilize DC resistance bridge when there is drain conditions, the consistent balance of every bridge electric current on resistance bridge is destroyed, and bridge output exports high level and makes control signal after full-bridge rectification, control SCR rectifier output voltage and send leakage-current alarm, thus realize the warning of SCR commutating DC output Leaked Current of Line to Ground, guarantee the life security of operating personnel, and it is low to realize cost, dirigibility is high, circuit is simple, practical.
The SCR commutating DC of the invention described above exports Leaked Current of Line to Ground warning circuit, and circuit is simple, practical and reliable, with low cost, electric leakage sensitivity parameter can adjust according to needs, the suitable parameter changing periphery, as U1, U2, can realize all can applying anywhere.
In sum, be the preferred embodiment of this utility model, the change of Fan Yiben done by new technique scheme, the function produced fail the scope exceeding technical solutions of the utility model time, all belong to protection domain of the present utility model.
Claims (10)
1.SCR commutating DC exports Leaked Current of Line to Ground warning circuit, mainly comprises simulation leakage tests circuit (1), DC resistance bridge (2), sensitivity adjusting circuit (3), full bridge rectifier (4), electric leakage display (5), light-coupled isolation on-off circuit (6), leakage-current alarm circuit (9) and control circuit (7), it is characterized by: the output terminal of DC resistance bridge circuit (2) is connected with sensitivity adjusting circuit (3) input end, the output terminal of DC resistance bridge circuit (2) is wherein connected with outer cabinet one end, the output terminal of sensitivity adjusting circuit (3) is connected with full bridge rectifier (4) input end, full bridge rectifier (4) output terminal shows (5) with electric leakage, light-coupled isolation on-off circuit (6) input end connects, light-coupled isolation on-off circuit (6) output terminal and multivibrator (8), control circuit (7) input end connects, the output terminal of multivibrator (8) is connected with leakage-current alarm circuit (9), the output terminal of control circuit (7) is connected to six triggers (11), the output terminal of six triggers (11) is connected to six pulse silicon controlled rectifier driving circuits (10).
2. SCR commutating DC according to claim 1 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described simulation leakage tests circuit (1) is directly connected with DC resistance bridge.
3. SCR commutating DC according to claim 1 and 2 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described simulation leakage tests circuit (1) is primarily of testing button S1, and resistance R15 forms.
4. SCR commutating DC according to claim 1 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described DC resistance bridge (2) is made up of resistance R11, R12, R13, R14.
5. SCR commutating DC according to claim 1 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described sensitivity adjusting circuit (3) is made up of adjustable resistance W1.
6. SCR commutating DC according to claim 1 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described full bridge rectifier (4) is made up of diode D1, D2, D3, D4; Electric leakage display (5) is made up of LED1.
7. SCR commutating DC according to claim 1 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described light-coupled isolation switch (6) circuit is made up of U1.
8. SCR commutating DC according to claim 1 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described multivibrator (8) is by resistance R1, R2, R3, R8, R9, R10, and electrochemical capacitor C1, C2, diode D5, operational amplifier U1 form.
9. SCR commutating DC according to claim 1 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described leakage-current alarm circuit (9) is by resistance R4, R5, and triode Q1, hummer BUZZ form.
10. SCR commutating DC according to claim 1 exports Leaked Current of Line to Ground warning circuit, it is characterized in that: described control circuit (7) is made up of resistance R6, R7, triode Q2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670093.4U CN204241607U (en) | 2014-11-11 | 2014-11-11 | SCR commutating DC exports Leaked Current of Line to Ground warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670093.4U CN204241607U (en) | 2014-11-11 | 2014-11-11 | SCR commutating DC exports Leaked Current of Line to Ground warning circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204241607U true CN204241607U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420670093.4U Expired - Fee Related CN204241607U (en) | 2014-11-11 | 2014-11-11 | SCR commutating DC exports Leaked Current of Line to Ground warning circuit |
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| Country | Link |
|---|---|
| CN (1) | CN204241607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173237A (en) * | 2018-01-31 | 2018-06-15 | 广东宝星新能科技有限公司 | Direct current supply cabinet DC terminal Leaked Current of Line to Ground warning circuit |
| CN110190583A (en) * | 2019-05-08 | 2019-08-30 | 广州京善电子有限公司 | DC grid leakage protection system |
-
2014
- 2014-11-11 CN CN201420670093.4U patent/CN204241607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173237A (en) * | 2018-01-31 | 2018-06-15 | 广东宝星新能科技有限公司 | Direct current supply cabinet DC terminal Leaked Current of Line to Ground warning circuit |
| CN110190583A (en) * | 2019-05-08 | 2019-08-30 | 广州京善电子有限公司 | DC grid leakage protection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151111 |
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| EXPY | Termination of patent right or utility model |