CN201821084U - Uninterrupted power supply (UPS) bypass reverse protection circuit - Google Patents
Uninterrupted power supply (UPS) bypass reverse protection circuit Download PDFInfo
- Publication number
- CN201821084U CN201821084U CN2010202657161U CN201020265716U CN201821084U CN 201821084 U CN201821084 U CN 201821084U CN 2010202657161 U CN2010202657161 U CN 2010202657161U CN 201020265716 U CN201020265716 U CN 201020265716U CN 201821084 U CN201821084 U CN 201821084U
- Authority
- CN
- China
- Prior art keywords
- bypass
- resistance
- capacitor
- operational amplifier
- ups
- 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
Images
Landscapes
- Amplifiers (AREA)
Abstract
A uninterrupted power supply (UPS) bypass reverse protection circuit comprises a reverse current detection circuit, a reverse current sampling circuit and a bypass reverse protection driving circuit. The reverse current detection circuit is provided with a current mutual inductor and dummy loads C1, C2 and C3. The dummy load C1 is arranged between a bypass air switch A phase output end of a bypass of a UPS power supply and a midline of a UPS system main line. The dummy load C2 is arranged between a bypass air switch B phase output end of the bypass of the UPS power supply and the midline of the UPS system main line. The dummy load C3 is arranged between a bypass air switch C phase output end of the bypass of the UPS power supply and the midline of the UPS system main line. The two ends of the current mutual inductor are respectively connected with the bypass air switch output end and a thyristor of the bypass. An output end of the current mutual inductor is connected with an input end of the reverse current sampling circuit. The utility model can avoid the situation in which a bypass input end has high voltage when no electric supply exists and ensure personal security.
Description
Technical field
The utility model relates to uninterrupted power supply (Uninterruptiable Power Supply is called for short UPS) technical field, particularly relates to the anti-protective circuit of irritating of a kind of UPS bypass.
Background technology
In ups system, the anti-defencive function of irritating of bypass is one of important assurance of UPS trouble free service, is the test event that safety requires.The anti-realization action of irritating protection of bypass mainly is to occur can disconnecting bypass air switch/contactor rapidly when bypass is counter irritates, thereby guarantees effectively to avoid energy to feed back to output with any approach.
In the prior art, because the particularity of SCR, the anti-protective circuit of irritating of bypass can be easy to usually realize that the SCR open fault detects, and bypass SCR short trouble detects and then is difficult to realize when bypass is not worked.Therefore,, provide the anti-protective circuit of irritating of a kind of UPS bypass can not detect the anti-problem of irritating of bypass that the SCR short circuit causes, make and when the anti-filling of bypass occurring, cut off bypass, guarantee personal safety to solve in the prior art at the prior art deficiency.
The utility model content
The purpose of this utility model is to avoid the deficiencies in the prior art part and provides a kind of UPS bypass the anti-protective circuit of irritating, and this UPS bypass is counter irritates protective circuit and can carry out that the UPS bypass is counter irritates protection.
The purpose of this utility model realizes by following technical measures.
The anti-protective circuit of irritating of a kind of UPS bypass, the anti-protection drive circuit of irritating of bypass that includes the anti-filling current detection circuit that is arranged at ups power, the anti-filling current sampling circuit that is connected with described anti-filling current detection circuit and be connected with described anti-filling current sampling circuit, the anti-output of irritating the protection drive circuit of described bypass is connected with the bypass of described ups power;
Described anti-filling current detection circuit is provided with current transformer and dummy load C1, C2, C3, described dummy load C1 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of A phase output terminal and described ups system main road, described dummy load C2 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of B phase output terminal and described ups system main road, described dummy load C3 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of C phase output terminal and described ups system main road, the input of described current transformer and output are connected with the thyristor that described bypass sky is opened output and bypass respectively, and the output of described current transformer is connected with the input of described anti-filling current sampling circuit.
The anti-current sampling circuit of irritating is provided with input B1; B2 and output B3; described anti-filling current sampling circuit is provided with voltage stabilizing didoe W1; zener diode W2; resistance R 1-R12; capacitor C 4-C11; operational amplifier A 1-A4; diode D1 and diode D2; the negative pole of described voltage stabilizing didoe W1; the positive pole of voltage stabilizing didoe W2; one end of resistance R 1 is connected with input B1; the positive pole of described voltage stabilizing didoe W1; the negative pole of described voltage stabilizing didoe W2; one end of resistance R 2 is connected with input B2; the other end of resistance R 1; one end of capacitor C 4; one end of resistance R 3 is connected with 2 ends of operational amplifier A 1; the other end of resistance R 2; 3 end ground connection of operational amplifier A 1; one end ground connection of capacitor C 5; the other end of capacitor C 5; 4 ends of operational amplifier A 1 are connected with VCC15-; one end ground connection of capacitor C 6; the other end of capacitor C 6; 8 ends of operational amplifier A 1 are connected with VCC15+; the output of operational amplifier A 1; the other end of resistance R 3; the other end of capacitor C 4 is connected with an end of capacitor C 7; the other end of capacitor C 7; one end of resistance R 4 is connected with 3 ends of operational amplifier A 2; one end of resistance R 5; the positive pole of diode D2; one end of capacitor C 8 is connected with 2 ends of operational amplifier A 2; the other end ground connection of resistance R 4; the negative pole of diode D2; the positive pole of diode D1; the other end of capacitor C 8 is connected with 1 end of operational amplifier A 2; one end ground connection of capacitor C 9; the other end of capacitor C 9; 4 termination VCC15-of operational amplifier A 2; one end ground connection of capacitor C 10; the other end of capacitor C 10; 8 termination VCC15+ of operational amplifier A 2; the negative pole of diode D1; one end of resistance R 6 is connected with 3 ends of operational amplifier A 3; the other end ground connection of resistance R 6; the other end of resistance R 5; one end of resistance R 7 is connected with 2 ends of operational amplifier A 3; 1 end of operational amplifier A 3; the other end of resistance R 7 is connected with an end of resistance R 8; the other end of resistance R 8; one end of capacitor C 11 is connected with an end of resistance R 9; the other end ground connection of capacitor C 11; the other end of resistance R 9; one end of resistance R 11 is connected with 3 ends of operational amplifier A 4; one end of resistance R 10 is connected with VREF+; the other end of resistance R 10; one end of resistance R 12 is connected with 2 ends of operational amplifier A 4; the other end of resistance R 12 connects ground; the other end of resistance R 11; 1 end of operational amplifier A 4 is connected with output B3, and output B3 is connected with the anti-protection drive circuit input of irritating of bypass.
The model of described operational amplifier A 1 is LF353MX.
The model of described operational amplifier A 2 is LF353MX.
The model of described operational amplifier A 3 is LF353MX.
The model of described operational amplifier A 4 is LM393MX.
The anti-protection drive circuit of irritating of described bypass is provided with input E1 and output E2, and input E1 is connected with the output B3 of described anti-filling current sampling circuit, and output E2 opens with the bypass sky of the bypass of ups power and is connected;
Described bypass is counter irritates the protection drive circuit and is provided with diode D3-D6, resistance R 13-R16, capacitor C 12, capacitor C 13, NPN type triode Q1 and bypass sky and opens assistant release, and described bypass sky is opened assistant release and is provided with 1 end, 2 ends, 3 ends, 4 ends, 5 ends, 6 ends, 7 ends and 8 ends;
The positive pole of described diode D3, the positive pole of diode D4 is connected with input E1, the negative pole of diode D3, the negative pole of diode D4 is connected with an end of resistance R 13, the other end of resistance R 13, one end of resistance R 14, one end of capacitor C 12 is connected with the base stage of triode Q1, the emitter of triode Q1, the other end ground connection of the other end of resistance R 14 and capacitor C 12, the collector electrode of triode Q1, the positive pole of diode D5, the positive pole of diode D6 is connected with 2 ends that the bypass sky is opened assistant release, the negative pole of diode D5, the negative pole of diode D6, one end of resistance R 15, one end of resistance R 16 is connected with 1 end that the bypass sky is opened assistant release, the other end of resistance R 15, the other end of resistance R 16 is connected with VCC15-, the bypass sky is opened 4 ends of assistant release, 7 ends, one end ground connection of capacitor C 13,5 ends that the bypass sky is opened assistant release are connected with the other end of capacitor C 13, and 6 ends that the bypass sky is opened assistant release are connected with output E2.
It is electromagnetic relay that described bypass sky is opened assistant release.
The model of described triode Q1 is MMBT4401LT1.
The anti-protective circuit of irritating of a kind of UPS bypass of the present utility model, the anti-protection drive circuit of irritating of bypass that includes the anti-filling current detection circuit that is arranged at ups power, the anti-filling current sampling circuit that is connected with described anti-filling current detection circuit and be connected with described anti-filling current sampling circuit, the anti-output of irritating the protection drive circuit of described bypass is connected with the bypass of described ups power; Described anti-filling current detection circuit is provided with current transformer and dummy load C1, C2, C3, described dummy load C1 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of A phase output terminal and described ups system main road, described dummy load C2 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of B phase output terminal and described ups system main road, described dummy load C3 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of C phase output terminal and described ups system main road, the thyristor that output and bypass are opened respectively at described bypass sky in the two ends of described current transformer is connected, and the output of described current transformer is connected with the input of described anti-filling current sampling circuit.The anti-protective circuit of irritating of UPS bypass of the present utility model by adding electric capacity in bypass input center line, is served as the effect of dummy load.When the short circuit of bypass thyristor, occur under the anti-situation of irritating of bypass; have certain electric current and flow through dummy load; current transformer in the bypass can detect this electric current; the anti-current detection circuit of irritating outputs signal to anti-filling current sampling circuit; when current value reaches threshold values; occur that bypass is counter irritates; current sampling circuit outputs signal to the anti-protection drive circuit of irritating of bypass; bypass is counter irritates the protection drive circuit and sends instruction and make the empty exoneration button of bypass; thereby avoid the bypass input when not having civil power, also to have the situation of high pressure, can guarantee personal safety.
Description of drawings
Utilize accompanying drawing that the utility model is further described, but the content in the accompanying drawing does not constitute any restriction of the present utility model.
Fig. 1 is the anti-schematic diagram of irritating the anti-filling current detection circuit of protective circuit of a kind of UPS bypass of the utility model.
Fig. 2 is the anti-circuit diagram of irritating the anti-filling current sampling circuit of protective circuit of a kind of UPS bypass of the utility model.
Fig. 3 is the anti-anti-circuit diagram of irritating the protection drive circuit of bypass of irritating protective circuit of a kind of UPS bypass of the utility model.
Embodiment
With the following Examples the utility model is further described.
The anti-protective circuit of irritating of a kind of UPS bypass; as Fig. 1, Fig. 2 and shown in Figure 3; the anti-protection drive circuit 300 of irritating of bypass that includes the anti-filling current detection circuit 100 that is arranged at ups power, the anti-filling current sampling circuit 200 that is connected with anti-filling current detection circuit 100 and be connected with anti-filling current sampling circuit 200, the anti-output of irritating protection drive circuit 300 of bypass is connected with the bypass of ups power.
The anti-current detection circuit 100 of irritating is provided with current transformer 120 and dummy load C1, C2, C3, the bypass sky that dummy load C1 is arranged at the bypass of ups power is opened between the center line of 110 A phase output terminal and ups system main road, the bypass sky that dummy load C2 is arranged at the bypass of described ups power is opened between the center line of 110 B phase output terminal and ups system main road, the bypass sky that dummy load C3 is arranged at the bypass of ups power is opened between the center line of 110 C phase output terminal and ups system main road, the input of current transformer 120 and output are connected with the thyristor 130 that the bypass sky is opened 110 outputs and bypass respectively, and the output of current transformer 120 is connected with anti-input of irritating current sampling circuit 200.The model of current transformer 120 is
E3HPCT1.
The anti-current sampling circuit 200 of irritating is provided with input B1, B2 and output B3, the anti-current sampling circuit 200 of irritating is provided with voltage stabilizing didoe W1, zener diode W2, resistance R 1-R12, capacitor C 4-C11, operational amplifier A 1-A4, diode D1 and diode D2, the negative pole of described voltage stabilizing didoe W1, the positive pole of voltage stabilizing didoe W2, one end of resistance R 1 is connected with input B1, the positive pole of described voltage stabilizing didoe W1, the negative pole of described voltage stabilizing didoe W2, one end of resistance R 2 is connected with input B2, the other end of resistance R 1, one end of capacitor C 4, one end of resistance R 3 is connected with 2 ends of operational amplifier A 1, the other end of resistance R 2,3 end ground connection of operational amplifier A 1, one end ground connection of capacitor C 5, the other end of capacitor C 5,4 ends of operational amplifier A 1 are connected with VCC15-, one end ground connection of capacitor C 6, the other end of capacitor C 6,8 ends of operational amplifier A 1 are connected with VCC15+.
The output of operational amplifier A 1; the other end of resistance R 3; the other end of capacitor C 4 is connected with an end of capacitor C 7; the other end of capacitor C 7; one end of resistance R 4 is connected with 3 ends of operational amplifier A 2; one end of resistance R 5; the positive pole of diode D2; one end of capacitor C 8 is connected with 2 ends of operational amplifier A 2; the other end ground connection of resistance R 4; the negative pole of diode D2; the positive pole of diode D1; the other end of capacitor C 8 is connected with 1 end of operational amplifier A 2; one end ground connection of capacitor C 9; the other end of capacitor C 9; 4 termination VCC15-of operational amplifier A 2; one end ground connection of capacitor C 10; the other end of capacitor C 10; 8 termination VCC15+ of operational amplifier A 2; the negative pole of diode D1; one end of resistance R 6 is connected with 3 ends of operational amplifier A 3; the other end ground connection of resistance R 6; the other end of resistance R 5; one end of resistance R 7 is connected with 2 ends of operational amplifier A 3; 1 end of operational amplifier A 3; the other end of resistance R 7 is connected with an end of resistance R 8; the other end of resistance R 8; one end of capacitor C 11 is connected with an end of resistance R 9; the other end ground connection of capacitor C 11; the other end of resistance R 9; one end of resistance R 11 is connected with 3 ends of operational amplifier A 4; one end of resistance R 10 is connected with VREF+; the other end of resistance R 10; one end of resistance R 12 is connected with 2 ends of operational amplifier A 4; the other end of resistance R 12 connects ground; the other end of resistance R 11; 1 end of operational amplifier A 4 is connected with output B3, and output B3 is connected with anti-protection drive circuit 300 inputs of irritating of bypass.
Wherein, the model of operational amplifier A 1 is LF353MX.The model of operational amplifier A 2 is LF353MX.The model of operational amplifier A 3 is LF353MX.The model of operational amplifier A 4 is LM393MX.
The anti-protection drive circuit 300 of irritating of bypass is provided with input E1 and output E2, and input E1 is connected with the output B3 of described anti-filling current sampling circuit 200, and output E2 opens 110 with the bypass sky of the bypass of ups power and is connected.
Described bypass is counter irritates protection drive circuit 300 and is provided with diode D3-D6, resistance R 13-R16, capacitor C 12, capacitor C 13, NPN type triode Q1 and bypass sky and opens assistant release 310, and described bypass sky is opened assistant release 310 and is provided with 1 end, 2 ends, 3 ends, 4 ends, 5 ends, 6 ends, 7 ends and 8 ends.
The positive pole of described diode D3, the positive pole of diode D4 is connected with input E1, the negative pole of diode D3, the negative pole of diode D4 is connected with an end of resistance R 13, the other end of resistance R 13, one end of resistance R 14, one end of capacitor C 12 is connected with the base stage of triode Q1, the emitter of triode Q1, the other end ground connection of the other end of resistance R 14 and capacitor C 12, the collector electrode of triode Q1, the positive pole of diode D5, the positive pole of diode D6 is connected with 2 ends that the bypass sky is opened assistant release 310, the negative pole of diode D5, the negative pole of diode D6, one end of resistance R 15, one end of resistance R 16 is connected with 1 end that the bypass sky is opened assistant release 310, the other end of resistance R 15, the other end of resistance R 16 is connected with VCC15-, the bypass sky is opened 4 ends of assistant release 310,7 ends, one end ground connection of capacitor C 13,5 ends that the bypass sky is opened assistant release 310 are connected with the other end of capacitor C 13, and 6 ends that the bypass sky is opened assistant release 310 are connected with output E2.Wherein, the bypass sky is opened 110 assistant releases 310 and is electromagnetic relay.
The model of triode Q1 is MMBT4401LT1.
The anti-protective circuit of irritating of UPS bypass of the present utility model by adding electric capacity in bypass input center line, is served as the effect of dummy load.When 130 short circuits of bypass thyristor, occur under the anti-situation of irritating of bypass; have certain electric current and flow through dummy load; current transformer 120 in the bypass can detect this electric current; the anti-current detection circuit 100 of irritating outputs signal to anti-filling current sampling circuit 200; when current value reaches threshold values; occur that bypass is counter irritates; current sampling circuit 200 outputs signal to the anti-protection drive circuit 300 of irritating of bypass; bypass is counter irritates protection drive circuit 300 and sends instruction and make the bypass sky open 110 to thread off; thereby avoid the bypass input when not having civil power, also to have the situation of high pressure, can guarantee personal safety.
The anti-protective circuit of irritating of UPS bypass of the present utility model, its operation principle is: the anti-protective circuit of irritating of bypass comprises three parts: anti-current detection circuit 100, anti-current sampling circuit 200, the anti-protection drive circuit 300 of irritating of bypass of irritating of irritating.Anti-irritate current detection circuit 100 mainly comprise dummy load be connected on the bypass sky open 110 and thyristor 130 between, A, B, the C three-phase connects an electric capacity respectively to center line, also have a current transformer 120 to be added in the whole bypass, when 130 short circuits of bypass thyristor, have certain short circuit current and flow through the electric capacity dummy load, the current transformer 120 in bypass this moment can detect this electric current.When current transformer 120 detected short circuit current, output information was to the anti-current sampling circuit 200 of irritating.Anti-filling current sampling circuit 200 elder generations through overdischarge, pass through block isolating circuit cancellation direct current component with voltage again, and this is only real short circuit current.Again through absolute value circuit to signal rectification and add a big filter circuit, and then filtering and reference voltage are compared, judge greater than reference voltage when signal short circuit current to have occurred, send fault-signal to protect drive circuit 300 to anti-filling of bypass.When fault-signal was arranged, the anti-current sampling circuit 200 of irritating can send a guard signal to the anti-protection drive circuit 300 of irritating of bypass, and the sky that adds in the driving bypass is opened assistant release 310 so that the bypass sky opens 110 threads off, thereby guarantees personal safety.
Need to prove that the anti-model of irritating operational amplifier A 1, A2, A3 and operational amplifier A 4 in the protective circuit of a kind of UPS bypass of the present utility model is not limited in the model in the present embodiment, also can be other model.The model of triode Q1 also is not limited in the model in the present embodiment, also can be other model.
Should be noted that at last; above embodiment is only in order to the explanation the technical solution of the utility model but not to the restriction of the utility model protection range; although the utility model has been done detailed description with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the essence and the scope of technical solutions of the utility model.
Claims (9)
1. anti-protective circuit of irritating of UPS bypass, it is characterized in that: the anti-protection drive circuit of irritating of bypass that includes the anti-filling current detection circuit that is arranged at ups power, the anti-filling current sampling circuit that is connected with described anti-filling current detection circuit and be connected with described anti-filling current sampling circuit, the anti-output of irritating the protection drive circuit of described bypass is connected with the bypass of described ups power;
Described anti-filling current detection circuit is provided with current transformer and dummy load C1, C2, C3, described dummy load C1 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of A phase output terminal and described ups system main road, described dummy load C2 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of B phase output terminal and described ups system main road, described dummy load C3 is arranged at the bypass sky of the bypass of described ups power and opens between the center line of C phase output terminal and described ups system main road, the input of described current transformer and output are connected with the thyristor that described bypass sky is opened output and bypass respectively, and the output of described current transformer is connected with the input of described anti-filling current sampling circuit.
2. the anti-protective circuit of irritating of UPS bypass according to claim 1; it is characterized in that: described anti-filling current sampling circuit is provided with input B1; B2 and output B3; described anti-filling current sampling circuit is provided with voltage stabilizing didoe W1; zener diode W2; resistance R 1-R12; capacitor C 4-C11; operational amplifier A 1-A4; diode D1 and diode D2; the negative pole of described voltage stabilizing didoe W1; the positive pole of voltage stabilizing didoe W2; one end of resistance R 1 is connected with input B1; the positive pole of described voltage stabilizing didoe W1; the negative pole of described voltage stabilizing didoe W2; one end of resistance R 2 is connected with input B2; the other end of resistance R 1; one end of capacitor C 4; one end of resistance R 3 is connected with 2 ends of operational amplifier A 1; the other end of resistance R 2; 3 end ground connection of operational amplifier A 1; one end ground connection of capacitor C 5; the other end of capacitor C 5; 4 ends of operational amplifier A 1 are connected with VCC15-; one end ground connection of capacitor C 6; the other end of capacitor C 6; 8 ends of operational amplifier A 1 are connected with VCC15+; the output of operational amplifier A 1; the other end of resistance R 3; the other end of capacitor C 4 is connected with an end of capacitor C 7; the other end of capacitor C 7; one end of resistance R 4 is connected with 3 ends of operational amplifier A 2; one end of resistance R 5; the positive pole of diode D2; one end of capacitor C 8 is connected with 2 ends of operational amplifier A 2; the other end ground connection of resistance R 4; the negative pole of diode D2; the positive pole of diode D1; the other end of capacitor C 8 is connected with 1 end of operational amplifier A 2; one end ground connection of capacitor C 9; the other end of capacitor C 9; 4 termination VCC15-of operational amplifier A 2; one end ground connection of capacitor C 10; the other end of capacitor C 10; 8 termination VCC15+ of operational amplifier A 2; the negative pole of diode D1; one end of resistance R 6 is connected with 3 ends of operational amplifier A 3; the other end ground connection of resistance R 6; the other end of resistance R 5; one end of resistance R 7 is connected with 2 ends of operational amplifier A 3; 1 end of operational amplifier A 3; the other end of resistance R 7 is connected with an end of resistance R 8; the other end of resistance R 8; one end of capacitor C 11 is connected with an end of resistance R 9; the other end ground connection of capacitor C 11; the other end of resistance R 9; one end of resistance R 11 is connected with 3 ends of operational amplifier A 4; one end of resistance R 10 is connected with VREF+; the other end of resistance R 10; one end of resistance R 12 is connected with 2 ends of operational amplifier A 4; the other end of resistance R 12 connects ground; the other end of resistance R 11; 1 end of operational amplifier A 4 is connected with output B3, and output B3 is connected with the anti-protection drive circuit input of irritating of bypass.
3. the anti-protective circuit of irritating of UPS bypass according to claim 2 is characterized in that: the model of described operational amplifier A 1 is LF353MX.
4. the anti-protective circuit of irritating of UPS bypass according to claim 2 is characterized in that: the model of described operational amplifier A 2 is LF353MX.
5. the anti-protective circuit of irritating of UPS bypass according to claim 2 is characterized in that: the model of described operational amplifier A 3 is LF353MX.
6. the anti-protective circuit of irritating of UPS bypass according to claim 2 is characterized in that: the model of described operational amplifier A 4 is LM393MX.
7. the anti-protective circuit of irritating of UPS bypass according to claim 2, it is characterized in that: the anti-protection drive circuit of irritating of described bypass is provided with input E1 and output E2, input E1 is connected with the output B3 of described anti-filling current sampling circuit, and output E2 opens with the bypass sky of the bypass of ups power and is connected;
Described bypass is counter irritates the protection drive circuit and is provided with diode D3-D6, resistance R 13-R16, capacitor C 12, capacitor C 13, NPN type triode Q1 and bypass sky and opens assistant release, and described bypass sky is opened assistant release and is provided with 1 end, 2 ends, 3 ends, 4 ends, 5 ends, 6 ends, 7 ends and 8 ends;
The positive pole of described diode D3, the positive pole of diode D4 is connected with input E1, the negative pole of diode D3, the negative pole of diode D4 is connected with an end of resistance R 13, the other end of resistance R 13, one end of resistance R 14, one end of capacitor C 12 is connected with the base stage of triode Q1, the emitter of triode Q1, the other end ground connection of the other end of resistance R 14 and capacitor C 12, the collector electrode of triode Q1, the positive pole of diode D5, the positive pole of diode D6 is connected with 2 ends that the bypass sky is opened assistant release, the negative pole of diode D5, the negative pole of diode D6, one end of resistance R 15, one end of resistance R 16 is connected with 1 end that the bypass sky is opened assistant release, the other end of resistance R 15, the other end of resistance R 16 is connected with VCC15-, the bypass sky is opened 4 ends of assistant release, 7 ends, one end ground connection of capacitor C 13,5 ends that the bypass sky is opened assistant release are connected with the other end of capacitor C 13, and 6 ends that the bypass sky is opened assistant release are connected with output E2.
8. the anti-protective circuit of irritating of UPS bypass according to claim 7 is characterized in that: it is electromagnetic relay that described bypass sky is opened assistant release.
9. the anti-protective circuit of irritating of UPS bypass according to claim 7 is characterized in that: the model of described triode Q1 is MMBT4401LT1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202657161U CN201821084U (en) | 2010-07-21 | 2010-07-21 | Uninterrupted power supply (UPS) bypass reverse protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202657161U CN201821084U (en) | 2010-07-21 | 2010-07-21 | Uninterrupted power supply (UPS) bypass reverse protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821084U true CN201821084U (en) | 2011-05-04 |
Family
ID=43919026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202657161U Expired - Fee Related CN201821084U (en) | 2010-07-21 | 2010-07-21 | Uninterrupted power supply (UPS) bypass reverse protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821084U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413729A (en) * | 2013-08-21 | 2013-11-27 | 广东易事特电源股份有限公司 | Circuit preventing relay from adhering |
| CN107819327A (en) * | 2016-09-13 | 2018-03-20 | 维谛技术有限公司 | A kind of ups power bypass is anti-to fill guard method |
| CN108919106A (en) * | 2018-05-30 | 2018-11-30 | 厦门科华恒盛股份有限公司 | A kind of fault detection means and method of the static switch for UPS |
| CN110350647A (en) * | 2019-06-04 | 2019-10-18 | 漳州科华技术有限责任公司 | The anti-drainage method for filling energy of UPS, bleeder and terminal |
-
2010
- 2010-07-21 CN CN2010202657161U patent/CN201821084U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413729A (en) * | 2013-08-21 | 2013-11-27 | 广东易事特电源股份有限公司 | Circuit preventing relay from adhering |
| CN107819327A (en) * | 2016-09-13 | 2018-03-20 | 维谛技术有限公司 | A kind of ups power bypass is anti-to fill guard method |
| CN107819327B (en) * | 2016-09-13 | 2019-02-12 | 维谛技术有限公司 | A kind of ups power bypass is anti-to fill guard method |
| CN108919106A (en) * | 2018-05-30 | 2018-11-30 | 厦门科华恒盛股份有限公司 | A kind of fault detection means and method of the static switch for UPS |
| CN110350647A (en) * | 2019-06-04 | 2019-10-18 | 漳州科华技术有限责任公司 | The anti-drainage method for filling energy of UPS, bleeder and terminal |
| CN110350647B (en) * | 2019-06-04 | 2022-01-14 | 漳州科华技术有限责任公司 | UPS reverse-irrigation energy discharge method and device and terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201821084U (en) | Uninterrupted power supply (UPS) bypass reverse protection circuit | |
| CN103855678B (en) | Overvoltage and undervoltage protection circuit of drive power source | |
| CN104218532A (en) | Voltage protection circuit for frequency converter direct current (DC) bus | |
| CN104779825B (en) | Cross type sub-module structure of modular multilevel converter (MMC) | |
| CN114172114A (en) | Module power output protection circuit | |
| CN204882821U (en) | Killer switch state detection circuitry | |
| CN103487707A (en) | Intelligent monitoring unit for vehicle-mounted three-phase alternating current power supply equipment | |
| CN201378730Y (en) | Power circuit breaker protective circuit | |
| CN201536254U (en) | Protector for power transformer | |
| CN202586265U (en) | Power system protection device | |
| CN102867712A (en) | Breaker for solar cell component string and protecting method | |
| CN202678082U (en) | Electronic transformer collector with overcurrent and overvoltage prevention function | |
| CN204205576U (en) | A kind of T link differential protection | |
| CN203774767U (en) | Cut-off type fault protection circuit of unity power factor boost converter | |
| CN202550222U (en) | Socket safety protection device and safety protection socket | |
| CN103326191A (en) | Socket safety protection device and safety protection socket | |
| CN202475239U (en) | Filtering protection circuit applied to double-feed converter control system power supply | |
| CN205484714U (en) | Circuit is listened to killer switch state | |
| CN210224996U (en) | UPS battery pack charging circuit protection device | |
| CN208675104U (en) | A kind of multiple-channel output is under-voltage and short-circuit protection circuit | |
| CN103928964B (en) | Transformer station's integrated power supply communication power device | |
| CN102857102A (en) | Current supplying component of current protection device | |
| CN101950942A (en) | Short-circuit protection and anti-lightning circuit for plasma equipment | |
| CN111416323A (en) | Self-recovery type over-voltage and under-voltage protection circuit with leakage protection | |
| CN201450328U (en) | Power supply protective circuit of engineering machinery controller |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20160721 |