CN204696653U - Phase shortage automatic control equipment off zero - Google Patents
Phase shortage automatic control equipment off zero Download PDFInfo
- Publication number
- CN204696653U CN204696653U CN201520268091.7U CN201520268091U CN204696653U CN 204696653 U CN204696653 U CN 204696653U CN 201520268091 U CN201520268091 U CN 201520268091U CN 204696653 U CN204696653 U CN 204696653U
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- China
- Prior art keywords
- zero
- line
- phase
- connected electrically
- relay
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- Expired - Fee Related
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Abstract
The utility model there is provided a kind of phase shortage automatic control equipment off zero, belong to a kind of power consumption equipment off zero, the control device of phase shortage, fuse, after open phase relay coil is chained together, one end is connected electrically in power supply A phase line, the other end is connected electrically on zero-power line N, after sample relay normally-closed contact and power supply indicator are chained together, after sample relay normally opened contact and relay coil off zero are chained together, after relay normally open contact off zero and malfunction indicator lamp are chained together, one end is connected electrically on one end of the normally opened contact of test button, the other end is connected electrically on zero line, the other end of the normally opened contact of test button is connected between the normally-closed contact of test button and sample relay coil.This phase shortage automatic control equipment off zero, when there is the main neutral line break of power supply or any phase phase line disconnects or zero line live wire connects inverse time, can to trip immediately and self-locking, to stop power supply, improve the fail safe that power consumption equipment uses.
Description
Technical field
The utility model provides a kind of control device, and especially a kind of power consumption equipment is off zero, the control device of phase shortage.
Background technology
On the power consumption equipment controlled by A.C. contactor or electric leakage protection relay; when power supply main neutral line break or any one phase phase line disconnect or zero line live wire connect inverse time; power consumption equipment can be burnt out because voltage raises, or make because of phase shortage operating three phase electric machine burn out.Control device also unsuitable at present effectively prevents the generation of these phenomenons.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of phase shortage automatic control equipment off zero, to improve the fail safe that power consumption equipment uses.
The utility model realizes like this, phase shortage automatic control equipment off zero, first fuse, after first open phase relay coil is chained together, one end is connected electrically in power supply A phase line, the other end is connected electrically on zero-power line N, second fuse, after second open phase relay coil is chained together, one end is connected electrically in power supply B phase line, the other end is connected electrically on zero-power line N, 3rd fuse, after 3rd open phase relay coil is chained together, one end is connected electrically in power supply C phase line, the other end is connected electrically on zero-power line N, normally opened contact one end on second open phase relay is connected electrically in the second fuse, between second open phase relay coil, the other end is connected electrically in auxiliary phase line, after sample relay normally-closed contact and power supply indicator are chained together, one end is connected electrically on one end of the normally opened contact of test button, the other end is connected electrically on zero line, after sample relay normally opened contact and relay coil off zero are chained together, one end is connected electrically on one end of the normally opened contact of test button, the other end is connected electrically on zero line, after relay normally open contact off zero and malfunction indicator lamp are chained together, one end is connected electrically on one end of the normally opened contact of test button, the other end is connected electrically on zero line, the other end of the normally opened contact of test button is connected electrically between the normally-closed contact of test button and sample relay coil, between sample relay normally opened contact and relay coil off zero, be electrically connected between relay normally open contact off zero and malfunction indicator lamp, reset button one end and sample relay normally-closed contact are electrically connected, the other end is connected electrically in the first fuse, between first open phase relay coil, first open phase relay normally opened contact, second open phase relay normally opened contact, after 3rd open phase relay normally opened contact series connection, one end is connected on and controls in phase line, the other end is connected on sample relay normally-closed contact through relay normally-closed contact off zero, between power supply indicator, normally-closed contact one end of test button and sample line are electrically connected, the other end connects transformer zero line pin through sample relay coil KS.
This phase shortage automatic control equipment off zero, when occur power supply main neutral line break or any one phase phase line disconnect or zero line live wire connect inverse time, can trip immediately and self-locking, alarm lamp is glittering, cut off main power source simultaneously, stop power supply, avoid because voltage raises and burn out power consumption equipment, or the problem operating three phase electric machine being burnt out because of phase shortage, improve the fail safe that power consumption equipment uses.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model circuit.
Embodiment
The embodiment provided below in conjunction with accompanying drawing illustrates concrete structure of the present utility model and operation principle.
As shown in drawings, the phase shortage automatic control equipment off zero of the utility model, first fuse Fu1, after first open phase relay coil Km1 is chained together, one end is connected electrically in power supply A phase line 1, the other end is connected electrically on zero-power line N4, second fuse Fu2, after second open phase relay coil Km2 is chained together, one end is connected electrically in power supply B phase line 2, the other end is connected electrically on zero-power line N4, 3rd fuse Fu3, after 3rd open phase relay coil Km3 is chained together, one end is connected electrically in power supply C phase line 3, the other end is connected electrically on zero-power line N4, normally opened contact Km22 one end on second open phase relay is connected electrically in the second fuse Fu2, between second open phase relay coil Km2, the other end is connected electrically in auxiliary phase line 7, after sample relay normally-closed contact KS1 and power supply indicator H1 is chained together, one end is connected electrically on one end of the normally opened contact of test button SB2, the other end is connected electrically on zero line 5, after sample relay normally opened contact KS2 and relay coil KV off zero is chained together, one end is connected electrically on one end of the normally opened contact of test button SB2, the other end is connected electrically on zero line 5, after relay normally open contact KV1 and malfunction indicator lamp H2 off zero is chained together, one end is connected electrically on one end of the normally opened contact of test button SB2, the other end is connected electrically on zero line 5, the other end of the normally opened contact of test button SB2 is connected electrically between the normally-closed contact of test button SB2 and sample relay coil KS, between sample relay normally opened contact KS2 and relay coil KV off zero, be electrically connected between relay normally open contact KV1 and malfunction indicator lamp H2 off zero, reset button SB1 one end and sample relay normally-closed contact KS1 are electrically connected, the other end is connected electrically in the first fuse Fu1, between first open phase relay coil Km1, first open phase relay normally opened contact Km11, second open phase relay normally opened contact Km21, after 3rd open phase relay normally opened contact Km31 connects, one end is connected on and controls in phase line 6, the other end is connected on sample relay normally-closed contact KS1 through relay normally-closed contact KV1 off zero, between power supply indicator H1, normally-closed contact one end and the sample line 8 of test button SB2 are electrically connected, the other end connects transformer zero line pin 9 through sample relay coil KS.
During use, sample line is connected on power consumption equipment zero line, and the power consumption equipment of 220 V is connected on zero-power line N4 and controls between phase line 6, and the power consumption equipment of 380V is connected on and controls between phase line and auxiliary phase line 7.When the three-phase line normal power supply of power supply, each open phase relay coil Km1, Km2, Km3 obtain electric, and each open phase relay normally opened contact Km11, Km21, Km31 are closed, and power supply indicator H1 lights, and control phase line output voltage.When main zero line disconnects, neutral voltage on power consumption equipment raises, after sample line collects this situation, sample relay coil KS obtains electric, the closed also self-locking of sample relay normally opened contact KS2, sample relay normally-closed contact KS1 disconnects, and control line line is disconnected, and controlled power consumption equipment trips because of decompression.When any phase open circuit of three-phase, corresponding open phase relay coil disconnects because of decompression, cutting-off controlling phases line voltage.Described transformer zero line pin is the zero line pin on the transformer that connects above of power consumption equipment.
Sample line also can be electrically connected remote control equipment.
Claims (1)
1. phase shortage automatic control equipment off zero, it is characterized in that, first fuse Fu1, after first open phase relay coil Km1 is chained together, one end is connected electrically in power supply A phase line (1), the other end is connected electrically in zero-power line N(4) on, second fuse Fu2, after second open phase relay coil Km2 is chained together, one end is connected electrically in power supply B phase line (2), the other end is connected electrically in zero-power line N(4) on, 3rd fuse Fu3, after 3rd open phase relay coil Km3 is chained together, one end is connected electrically in power supply C phase line (3), the other end is connected electrically in zero-power line N(4) on, normally opened contact Km22 one end on second open phase relay is connected electrically in the second fuse Fu2, between second open phase relay coil Km2, the other end is connected electrically in auxiliary phase line (7), after sample relay normally-closed contact KS1 and power supply indicator H1 is chained together, one end is connected electrically on one end of the normally opened contact of test button SB2, the other end is connected electrically on zero line (5), after sample relay normally opened contact KS2 and relay coil KV off zero is chained together, one end is connected electrically on one end of the normally opened contact of test button SB2, the other end is connected electrically on zero line (5), after relay normally open contact KV1 and malfunction indicator lamp H2 off zero is chained together, one end is connected electrically on one end of the normally opened contact of test button SB2, the other end is connected electrically on zero line (5), the other end of the normally opened contact of test button SB2 is connected electrically between the normally-closed contact of test button SB2 and sample relay coil KS, between sample relay normally opened contact KS2 and relay coil KV off zero, be electrically connected between relay normally open contact KV1 and malfunction indicator lamp H2 off zero, reset button SB1 one end and sample relay normally-closed contact KS1 are electrically connected, the other end is connected electrically in the first fuse Fu1, between first open phase relay coil Km1, first open phase relay normally opened contact Km11, second open phase relay normally opened contact Km21, after 3rd open phase relay normally opened contact Km31 connects, one end is connected on and controls in phase line (6), the other end is connected on sample relay normally-closed contact KS1 through relay normally-closed contact KV1 off zero, between power supply indicator H1, normally-closed contact one end of test button SB2 and sample line (8) are electrically connected, the other end connects transformer zero line pin (9) through sample relay coil KS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520268091.7U CN204696653U (en) | 2015-04-29 | 2015-04-29 | Phase shortage automatic control equipment off zero |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520268091.7U CN204696653U (en) | 2015-04-29 | 2015-04-29 | Phase shortage automatic control equipment off zero |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204696653U true CN204696653U (en) | 2015-10-07 |
Family
ID=54236906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520268091.7U Expired - Fee Related CN204696653U (en) | 2015-04-29 | 2015-04-29 | Phase shortage automatic control equipment off zero |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204696653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173242A (en) * | 2017-12-19 | 2018-06-15 | 国家电网公司 | Motor-pumped well control cabinet and control method |
-
2015
- 2015-04-29 CN CN201520268091.7U patent/CN204696653U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173242A (en) * | 2017-12-19 | 2018-06-15 | 国家电网公司 | Motor-pumped well control cabinet and control method |
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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: 20151007 Termination date: 20160429 |