CN203433049U - Phase-dislocation warning system for three-phase power supply of crane - Google Patents
Phase-dislocation warning system for three-phase power supply of crane Download PDFInfo
- Publication number
- CN203433049U CN203433049U CN201320459268.2U CN201320459268U CN203433049U CN 203433049 U CN203433049 U CN 203433049U CN 201320459268 U CN201320459268 U CN 201320459268U CN 203433049 U CN203433049 U CN 203433049U
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- China
- Prior art keywords
- phase
- alarm
- power supply
- crane
- warning system
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Abstract
The utility model discloses a phase-dislocation warning system for a three-phase power supply of a crane, and the system is characterized in that the system comprises a phase-sequence alarm loop; the phase-sequence alarm loop comprises a phase-sequence relay (1) and an alarm (2); the phase-sequence relay (1) is connected with the three-phase power supply, and then is in series connection with the alarm (2); meanwhile, the alarm (2) is connected with one phase of the three-phase power supply; during the phase dislocation of the three-phase power supply, the phase-sequence relay (1) is triggered to be on, and the alarm (2) gives an alarm; and the system provided by the utility model is simple in structure, and can give an alarm in real time to guarantee the safety of operation during the phase dislocation of the three-phase power supply.
Description
Technical field
the utility model relates to a kind of crane three-phase supply misphase warning system.
Background technology
in the use procedure of hanging at crane gantry, there will be unavoidably the problems such as power fail, maintenance, because crane adopts three-phase alternating-current supply, the transposing of phase sequence can cause the transposing of motor forward and reverse, if because of carelessness phase sequence is mistaken afterwards in maintenance, operating personnel's operation for the first time after maintenance so, according to old operating habit, will become dropping signal to rising signals, can in handling process, cause danger like this.
Summary of the invention
the utility model object is: provide a kind of simple in structure, Realtime Alerts is with the crane three-phase supply misphase warning system of protection handling safety.
the technical solution of the utility model is: a kind of crane three-phase supply misphase warning system, it is characterized in that, comprise phase sequence alarm circuit, described phase sequence alarm circuit comprises phase sequence relay and alarm, and described phase sequence relay is connected with three-phase supply, and then this phase sequence relay is connected with described alarm, described alarm is connected with the wherein phase power supply in three-phase supply simultaneously, when three-phase supply misphase, trigger phase sequence relay conducting, alarm equipment alarm.
the utility model has the advantages that: not only simple in structure, and can be when three-phase supply misphase, Realtime Alerts is to guarantee the safety of operation.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the utility model is further described:
fig. 1 is the utility model circuit theory diagrams;
wherein: 1 phase sequence relay, 2 alarms.
Embodiment
embodiment: shown in Fig. 1, a kind of crane three-phase supply misphase warning system, comprise phase sequence alarm circuit, phase sequence alarm circuit comprises phase sequence relay 1 and alarm 2, and phase sequence relay 1 is connected with three-phase supply, and then this phase sequence relay 1 is connected with alarm 2, alarm 1 is connected with the wherein phase power supply in three-phase supply simultaneously, when three-phase supply misphase, trigger phase sequence relay 1 conducting, alarm 2 is reported to the police.
the utility model has the advantage of, not only simple in structure, and can be when three-phase supply misphase, Realtime Alerts is to guarantee the safety of operation.
above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All modifications of doing according to the Spirit Essence of the utility model main technical schemes, within all should being encompassed in protection domain of the present utility model.
Claims (1)
1. a crane three-phase supply misphase warning system, it is characterized in that, comprise phase sequence alarm circuit, described phase sequence alarm circuit comprises phase sequence relay (1) and alarm (2), and described phase sequence relay (1) is connected with three-phase supply, and then this phase sequence relay (1) is connected with described alarm (2), described alarm (2) is connected with the wherein phase power supply in three-phase supply simultaneously, when three-phase supply misphase, trigger phase sequence relay (1) conducting, alarm (2) is reported to the police.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320459268.2U CN203433049U (en) | 2013-07-30 | 2013-07-30 | Phase-dislocation warning system for three-phase power supply of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320459268.2U CN203433049U (en) | 2013-07-30 | 2013-07-30 | Phase-dislocation warning system for three-phase power supply of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203433049U true CN203433049U (en) | 2014-02-12 |
Family
ID=50062077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320459268.2U Expired - Fee Related CN203433049U (en) | 2013-07-30 | 2013-07-30 | Phase-dislocation warning system for three-phase power supply of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203433049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634369A (en) * | 2014-11-04 | 2016-06-01 | 天津港太平洋国际集装箱码头有限公司 | Three phase power source phase sequence detection and automatic switching control circuit |
-
2013
- 2013-07-30 CN CN201320459268.2U patent/CN203433049U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634369A (en) * | 2014-11-04 | 2016-06-01 | 天津港太平洋国际集装箱码头有限公司 | Three phase power source phase sequence detection and automatic switching control circuit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20200730 |