CN2793890Y - Integrated mutual inductor of explosive-proof electromagnetic starter - Google Patents
Integrated mutual inductor of explosive-proof electromagnetic starter Download PDFInfo
- Publication number
- CN2793890Y CN2793890Y CN 200520041114 CN200520041114U CN2793890Y CN 2793890 Y CN2793890 Y CN 2793890Y CN 200520041114 CN200520041114 CN 200520041114 CN 200520041114 U CN200520041114 U CN 200520041114U CN 2793890 Y CN2793890 Y CN 2793890Y
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- Prior art keywords
- base
- mutual inductor
- zero sequence
- socket
- electromagnetic starter
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Abstract
The utility model discloses an integrated transformer of a flame-proof electromagnetic starter of a hand-held type, which belongs to electric equipment. The utility model is composed of a base and a casing arranged on the base, wherein three current transformers and one zero sequence current transformer are arranged in the casing. Three-phase power lines respectively penetrate the three current transformers and are then combined to penetrate the zero sequence current transformer, and finally, the three-phase power lines penetrate out of the bottom of the casing. A socket and connecting terminals are arranged on the base, wherein an electronic protector can be inserted to the socket and the connecting terminals provide power or output signals. The utility model has the advantages of compact structure and light weight, and a large amount of tangled connecting wires of the prior art are reduced.
Description
Technical field
The utility model relates to the integrated instrument transformer of a kind of portable flame-proof type electromagnetic starter, belongs to electric equipment.
Background technology
At present, known mining low voltage electromagnetic starter threephase current transformer mostly is separately to use, and seldom uses zero-sequence transformer.Can not make electromagnetic starter the electric leakage of the three-phase current of its output be detected and protect, have very big potential safety hazard in when work.During work generally speaking the feeding switch in front connect a back number electromagnetic starter, when the load electric leakage of certain electromagnetic starter, this TV station electromagnetic starter can not be protected, often feeding switch protection deenergization.This moment, other several electromagnetic starters while deenergizations influenced work.The electrician often will test every electromagnetic starter and load at timely failure judgement point of when maintenance, causes to stop production for a long time.Subsurface environment is abominable, and the position of electromagnetic starter is wide apart sometimes, brings very big difficulty to the maintenance personal.
Summary of the invention
In order to overcome the deficiency of existing portable flame-proof type electromagnetic starter, the utility model provides a kind of induced current that can not only export three phase mains that threephase current transformer and zero sequence current mutual inductor are fitted together, and possesses the zero-sequence current that detects three phase mains simultaneously.
The utility model solves the scheme that its technical problem takes: it comprises insulation crust; in insulation crust; stand up side by side on top by three ring-like current transformers; the hole axis parallel of three instrument transformers; thereunder crouch and put a ring-like zero sequence current mutual inductor; the major loop three-phase power line passes zero sequence current mutual inductor after passing three current transformers respectively more simultaneously; it also comprises base; socket for the plug-in mounting electronic protector is arranged on the base; both sides at base have binding post respectively, and the insulation crust device is on base.
The induced current of threephase current transformer and zero-sequence transformer is connected with electronic protector by the socket in the middle of the insulation crust, and electronic protector provides power supply or output control signal by the binding post at insulation crust two ends again.
The beneficial effects of the utility model are: integrated instrument transformer compact conformation, volume are little, in light weight, are fit to use on the hand body switch.When recording the three phase mains current value, reduce mixed and disorderly wiring, record the load electric leakage signal of starter simultaneously, ensure the safe operation of starter, when electric leakage was arranged, this organizational security protected outage, did not influence the work of other starter.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Accompanying drawing is the utility model structural representation.
Among the figure: 1, shell, 2, current transformer, 3, zero sequence current mutual inductor, 4, the electronic protector socket, 5, binding post, 6, three-phase power line, 7, base.
Embodiment
As shown in drawings, integrated current transformer, plastic casing (1) is arranged, the cased top of three current transformers (2), a zero sequence current mutual inductor (3) is contained in the shell inner bottom part, three-phase power line (3) passes separately in three current transformers (2) respectively, passes the external vacuum A.C. contactor in back together in zero sequence current mutual inductor then.Shell (1) is contained in above the base (7), also is provided with protector socket (4) above the base, at the two ends of base binding post (5) is arranged respectively.
Claims (1)
1, the integrated instrument transformer of a kind of portable flame-proof type electromagnetic starter, it is characterized in that it comprises insulation crust (1), top in shell (1) three ring-like current transformers placed side by side (2), shell inner bottom part crouch and put an annular zero sequence current mutual inductor (3), three-phase power line (6) passes zero sequence current mutual inductor (3) after penetrating three current transformers respectively more simultaneously, and the bottom from insulation crust passes then; It also comprises base (7), and the socket (4) for the plug-in mounting electronic protector is arranged on base (7), on the both sides of base binding post (5) is arranged respectively, and insulation crust (1) installs on base (7); The induced current of threephase current transformer and zero sequence current mutual inductor is connected with electronic protector by socket (4), and electronic protector passes through the binding post out-put supply or the output control signal on base (7) both sides again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041114 CN2793890Y (en) | 2005-04-25 | 2005-04-25 | Integrated mutual inductor of explosive-proof electromagnetic starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041114 CN2793890Y (en) | 2005-04-25 | 2005-04-25 | Integrated mutual inductor of explosive-proof electromagnetic starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2793890Y true CN2793890Y (en) | 2006-07-05 |
Family
ID=36821030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520041114 Expired - Fee Related CN2793890Y (en) | 2005-04-25 | 2005-04-25 | Integrated mutual inductor of explosive-proof electromagnetic starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2793890Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924346A (en) * | 2010-09-01 | 2010-12-22 | 介国安 | Current and zero-sequence difunctional mutual inductor |
| CN101505053B (en) * | 2008-08-07 | 2011-04-27 | 珠海许继电气有限公司 | Power line protection method based on user boundary circuit breaker devices |
-
2005
- 2005-04-25 CN CN 200520041114 patent/CN2793890Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505053B (en) * | 2008-08-07 | 2011-04-27 | 珠海许继电气有限公司 | Power line protection method based on user boundary circuit breaker devices |
| CN101924346A (en) * | 2010-09-01 | 2010-12-22 | 介国安 | Current and zero-sequence difunctional mutual inductor |
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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: 20060705 Termination date: 20110425 |