CN201860123U - Automatic switching device of power transformer - Google Patents
Automatic switching device of power transformer Download PDFInfo
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- CN201860123U CN201860123U CN2010205438823U CN201020543882U CN201860123U CN 201860123 U CN201860123 U CN 201860123U CN 2010205438823 U CN2010205438823 U CN 2010205438823U CN 201020543882 U CN201020543882 U CN 201020543882U CN 201860123 U CN201860123 U CN 201860123U
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Abstract
The utility model relates to an automatic switching device of a power transformer, which comprises a high-voltage electric switch, an alternating-current contactor, a current transformer, a detection control circuit and a power supply circuit, wherein the contacts of the high-voltage electric switch are connected with the input end of the transformer in series, the contacts of the alternating-current contactor are connected with the output end of the transformer in series, the current transformer is arranged on a phase line at the output end of the transformer, and the two ends of the contacts of the alternating-current contactor are connected with resistors in parallel; the coil end of the high-voltage electric switch is connected with the G1 end and the G2 end of the detection control circuit, the coil end of the alternating-current contactor is connected with the D1 end and the D2 end of the detection control circuit, and the two ends of the current transformer are connected with the L1 end and the L2 end of the detection control circuit; and the input end of the power supply circuit is connected with a power supply, and the output end of the power supply circuit is connected with the V end of the detection control circuit. Compared with the prior art, the automatic switching device of the power transformer has the advantages that the structure is simple, the device is convenient to use, the cost is low, no danger exists, and the automatic control of on-load switching-in and no-load switching-out can be realized.
Description
Technical field
The utility model relates to the automatic putting in and cutting off device for power transformer in a kind of electric power network.
Background technology
Many staff quarters and job site are arranged at a distance of nearer, it mostly is again and produces working daytime, comes off duty evening and has a rest.These class enterprises and institutions adopt two transformer-supplied more, bigger serving for producing, and another is less, is service for life.This supply power mode has stopped to produce the no-load loss with transformer, helps saving energy and reduce the cost.But, produce at present with transformer in electrical network input or cut out, all be to realize by manual operation, waste time and energy, cause energy waste because of forgeing sometimes.Realize power transformer having in electrical network carry drop into, automatic control that zero load cuts out, be power consumer for reducing and even stopping a kind of fine long-cherished wish that the power transformer no-load wastes.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, provide a kind of simple in structure, with low cost, can realize automatically carrying drop into, zero load cuts out automatic putting in and cutting off device for power transformer.
Its technical scheme is: comprise high-voltage electric switch, A.C. contactor, current transformer, detection control circuit and power circuit.The contact of described high-voltage electric switch is connected in series in the transformer input, the contact of A.C. contactor is connected in series in the transformer output, a phase line of transformer output is provided with current transformer, and each two ends, contact of A.C. contactor all are connected in parallel to resistance; The coil-end of described high-voltage electric switch is connected with G1, the G2 end that detects control circuit, and the coil-end of A.C. contactor is connected with D1, the D2 end that detects control circuit, and the two ends of current transformer are connected with L1, the L2 end that detects control circuit; The input of described power circuit is connected with power supply, and its output is connected with the V end that detects control circuit.
Described power circuit is the D.C. regulated power supply that has storage battery.Described detection control circuit is by time controller, integrated circuit, resistance, electric capacity, diode, potentiometer and triode are formed, wherein, power end respectively with an end of second resistance, 4 of integrated circuit, 8 pin, after the input of time controller is connected, contact by relay is connected with the D1 end, the other end of first resistance respectively with 2 of integrated circuit, 6 pin, the positive pole of second electric capacity and the collector electrode of triode are connected, 3 pin of integrated circuit are connected with an end of relay, 5 pin of integrated circuit are connected with an end of the 3rd electric capacity, the base stage of triode is connected with the negative pole anodal and first diode of first electric capacity by potentiometer, the positive pole of first diode is connected with the L1 end by first resistance, the negative pole of first electric capacity, the negative pole of second electric capacity, the other end of the 3rd electric capacity, the emitter of triode, the ground end of time controller and 1 pin of integrated circuit connect, and hold with D2, the G2 end, the L2 end is connected, the two ends of relay also are parallel with second diode, the output of time controller is connected with the G1 end, and second contact of relay is connected in G1 in parallel, on the G2.
The utility model compared with prior art, have simple in structure, easy to use, with low cost, do not have dangerous and can realize again carrying drop into, advantage that zero load cuts out automatic control.
Four, description of drawings
Fig. 1 is the circuit structure diagram of a kind of embodiment of the utility model;
Fig. 2 is the circuit theory diagrams that detect control circuit among Fig. 1.
Five, embodiment
With reference to Fig. 1-Fig. 2, the automatic putting in and cutting off device for power transformer in a kind of electric power network comprises high-voltage electric switch GKJ, A.C. contactor DKJ, current transformer L, detects control circuit MC and power circuit DY.The contact of high-voltage electric switch GKJ is connected in series in transformer BYQ input, the contact of A.C. contactor DKJ is connected in series in transformer BYQ output, a phase line of transformer BYQ output is provided with current transformer L, and each two ends, contact of A.C. contactor DKJ all are connected in parallel to resistance R A, RB, RC; The coil-end of high-voltage electric switch GKJ is connected with G1, the G2 end that detects control circuit MC, the coil-end of A.C. contactor DKJ is connected with D1, the D2 end that detects control circuit MC, and the two ends of current transformer L are connected with L1, the L2 end that detects control circuit MC; The input of power circuit DY is connected with power supply, and its output is connected with the V end that detects control circuit MC.Power circuit DY is the D.C. regulated power supply that has storage battery.Detect control circuit MC by time controller SJ, integrated circuit (IC), resistance R 1-R2, capacitor C 1-C3, diode D1-D2, potentiometer W and triode T form, wherein, power end V respectively with an end of second resistance R 2,4 of integrated circuit (IC), 8 pin, after the input of time controller SJ is connected, contact J-1 by relay J is connected with the D1 end, the other end of first resistance R 1 respectively with 2 of integrated circuit (IC), 6 pin, the collector electrode of the positive pole of second capacitor C 2 and triode T is connected, 3 pin of integrated circuit (IC) are connected with an end of relay J, 5 pin of integrated circuit (IC) are connected with an end of the 3rd capacitor C 3, the base stage of triode T is connected with the negative pole anodal and the first diode D1 of first capacitor C 1 by potentiometer W, the positive pole of the first diode D1 is connected with the L1 end by first resistance R 1, the negative pole of first capacitor C 1, the negative pole of second capacitor C 2, the other end of the 3rd capacitor C 3, the emitter of triode T, the ground end of time controller SJ and 1 pin of integrated circuit (IC) connect, and hold with D2, the G2 end, the L2 end is connected, the two ends of relay J also are parallel with the second diode D2, the output of time controller SJ is connected with the G1 end, and second contact of relay is connected in G1 in parallel, on the G2.
Among Fig. 1, U, V, W are the high voltage source end, and A, B, C, N are power supply end.The course of work of the present invention is: start-up time of setting-up time controller SJ (as being set to point in mornings 7) at first, and the shut-in time (as being set to point in mornings 8), when the time arrives, the contact SJ-1 of time controller SJ will closed certain hour, at this moment, high-voltage electric switch GKJ adhesive thereupon, connect transformer BYQ high pressure U, V, W, during this period of time, when going to work electricity consumption, because the existence of resistance R A, RB, RC then just has voltage output among the current transformer L if any the worker, from but the output of 3 pin of integrated circuit (IC), relay J
Adhesive, A.C. contactor DKJ adhesive then, power supply A, B, C, N hold output, the normal electricity consumption of workpeople.Because second contact of relay is connected in parallel on G1, the G2, so, although the turn-on time of time controller SJ is shorter, can not influence power supply yet.When next, after electricity consumption stops, then induced voltage reduces or disappears among the current transformer L, under the effect of integrated circuit (IC), the relay J time-delay discharges, the electric power loop of cutoff high motor switch GKJ, A.C. contactor DKJ, whole system is got back to armed state, reaches non-loaded cut-out transformer main power source, saves the purpose that electricity decreases.The power circuit DY that uses among the present invention is the D.C. regulated power supply that has storage battery, so can not influence the operate as normal of system because of no civil power.
Claims (3)
1. automatic putting in and cutting off device for power transformer, comprise high-voltage electric switch, A.C. contactor, current transformer, detection control circuit and power circuit, it is characterized in that: the contact of described high-voltage electric switch is connected in series in the transformer input, the contact of A.C. contactor is connected in series in the transformer output, a phase line of transformer output is provided with current transformer, and each two ends, contact of A.C. contactor all are connected in parallel to resistance; The coil-end of described high-voltage electric switch is connected with G1, the G2 end that detects control circuit, and the coil-end of A.C. contactor is connected with D1, the D2 end that detects control circuit, and the two ends of current transformer are connected with L1, the L2 end that detects control circuit; The input of described power circuit is connected with power supply, and its output is connected with the V end that detects control circuit.
2. automatic putting in and cutting off device for power transformer according to claim 1 is characterized in that: described power circuit is the D.C. regulated power supply that has storage battery.
3. automatic putting in and cutting off device for power transformer according to claim 1, it is characterized in that: described detection control circuit is by time controller, integrated circuit, resistance, electric capacity, diode, potentiometer and triode are formed, wherein, power end respectively with an end of second resistance, 4 of integrated circuit, 8 pin, after the input of time controller is connected, first contact by relay is connected with the D1 end, the other end of first resistance respectively with 2 of integrated circuit, 6 pin, the positive pole of second electric capacity and the collector electrode of triode are connected, 3 pin of integrated circuit are connected with an end of relay, 5 pin of integrated circuit are connected with an end of the 3rd electric capacity, the base stage of triode is connected with the negative pole anodal and first diode of first electric capacity by potentiometer, the positive pole of first diode is connected with the L1 end by first resistance, the negative pole of first electric capacity, the negative pole of second electric capacity, the other end of the 3rd electric capacity, the emitter of triode, the ground end of time controller and 1 pin of integrated circuit connect, and hold with D2, the G2 end, the L2 end is connected, the two ends of relay also are parallel with second diode, the output of time controller is connected with the G1 end, and second contact of relay is connected in G1 in parallel, on the G2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205438823U CN201860123U (en) | 2010-09-27 | 2010-09-27 | Automatic switching device of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205438823U CN201860123U (en) | 2010-09-27 | 2010-09-27 | Automatic switching device of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201860123U true CN201860123U (en) | 2011-06-08 |
Family
ID=44105922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205438823U Expired - Fee Related CN201860123U (en) | 2010-09-27 | 2010-09-27 | Automatic switching device of power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201860123U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633973A (en) * | 2016-03-31 | 2016-06-01 | 内黄县电力设备厂 | Transformer no-load running automatic control device |
-
2010
- 2010-09-27 CN CN2010205438823U patent/CN201860123U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633973A (en) * | 2016-03-31 | 2016-06-01 | 内黄县电力设备厂 | Transformer no-load running automatic control device |
| CN105633973B (en) * | 2016-03-31 | 2018-08-28 | 内黄县恒源电力实业有限责任公司 | No-load transformer runs automatic control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20110927 |