CN2513114Y - Current meter - Google Patents
Current meter Download PDFInfo
- Publication number
- CN2513114Y CN2513114Y CN 01274157 CN01274157U CN2513114Y CN 2513114 Y CN2513114 Y CN 2513114Y CN 01274157 CN01274157 CN 01274157 CN 01274157 U CN01274157 U CN 01274157U CN 2513114 Y CN2513114 Y CN 2513114Y
- Authority
- CN
- China
- Prior art keywords
- pointer
- current
- stylus
- housing
- reometer
- 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
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a current meter which is characterized in that a fixed stylus and a movable stylus are arranged at the face plate of the current meter, one end of the fixed stylus is connected with the movable stylus and one end of the lead, and capable of contacting the pointer, and one end of the pointer is connected with the other lead; the other end of the fixed stylus is a free end and capable of contacting the movable stylus. When the current meter is connected with the protective device, without current, the fixed stylus is communicated with the pointer, and the movable stylus is capable of optionally setting the current value, and when the pointer achieves the set point, the movable stylus is communicated; the current condition in the circuit is detected momentarily; thereby the current meter is capable of being used in the current detection and used in the protective device of the noncontact electric machine.
Description
Technical field:
The utility model relates to the instrument of measuring current, specifically a kind of reometer that is mainly used in the contactless electric motor protective device.
Background technology: existing reometer mainly comprises housing, is contained in circuit board and panel in the housing, panel-mounted pointer, and two of being connected with housing test connector, and the effect of this class reometer mainly is that electric current is detected; Have and be used for electric motor protective device at present: electrothermal relay overloading protective device, phase-lacking protective device etc.Because hot protective relaying device adopts the bimetallic strip structure, it is tired that long-term excess current produces sheet metal, thereby reduce or lose protective effect; Phase-lacking protective device takes electric current to change by three mutual inductors, protects motor by taking off the structure device, thus sensitivity can not guarantee, and can only protect phase shortage.
Summary of the invention:
The purpose of this utility model is to provide a kind of improved reometer, and it not only can be used for current detecting, also can be used in the contactless electric motor protective device.
The technical solution of the utility model is achieved in that a kind of reometer, it mainly comprises housing, be contained in circuit board and panel in the housing, panel-mounted pointer, be connected with housing two test connectors is characterized in that: be equipped with at the panel of reometer and decide contact pilotage and moving contact pin, an end of decide contact pilotage is connected with an end of moving contact pin and lead and also can touches pointer, one end of pointer is connected with another lead, and the other end of deciding contact pilotage is free end and can touches moving contact pin.
The utility model has been owing to designed especially on the panel of reometer and decided contact pilotage and moving contact pin, decides contact pilotage when not having current conditions and the ammeter pointer conducting; Moving contact pin can arbitrarily be set current value, and conducting when ammeter pointer reaches setting value; At any time the current conditions in the testing circuit can substitute the electrothermal relay and the open phase protector that use at present simultaneously, realizes overloading protection and open-phase protection, so this reometer not only can be used for current detecting, also can be used in the contactless electric motor protective device.
Description of drawings:
Fig. 1 is the synoptic diagram of the utility model one embodiment
Fig. 2 is the side view of Fig. 1
Embodiment:
The utility model will be further described below in conjunction with drawings and Examples.
The utility model mainly comprises housing 1; be contained in circuit board and panel 2 in the housing 1; be contained in the pointer 3 on the panel 2; two test connectors that are connected with housing; circuit board is the circuit board that electronic component is housed; test bar is connected with two test connectors of housing; can detect whether electric current is arranged in the circuit; it is different from prior art and is: be equipped with at the panel 2 of reometer and decide contact pilotage 4 and moving contact pin 5; an end of deciding contact pilotage 4 is connected with an end of an end of moving contact pin and lead 6 and can touches pointer; one end of pointer 3 is connected with another lead 7; the other end of deciding contact pilotage 4 is free end and can touches moving contact pin 5; it is approximate L-shaped to decide contact pilotage in the enforcement; panel-mountedly decide contact pilotage; one end of moving contact pin and pointer can be on an axial line; for the ease of regulating; panel-mountedly decide contact pilotage and adopt screw 8 to fix; convenient in order to use; the other end of present embodiment two leads is connected with housing; two test connectors are set on housing; one end of reometer is connected with mutual inductor coil during use; the other end of reometer is connected on 2 of the J1-1 normally opened contacts; moving contact pin with decide the end that one of contact pilotage terminates at relay J 2 coils and relay normally open contact J2-1, pointer be connected with relay normally open contact J1-2 (annexation about reometer and electric motor protective device will be applied for a patent separately).Because relay normally open contact J1-2 a bit connects ammeter pointer, another point connects the negative pole of direct supply 6V, ammeter pointer is through time-delay indication real work electric current, thus when having avoided electric motor starting to the dash current (passing the two-phase in the three-phase electricity in the transformer iron core) of reometer coil, pointer.When motor overload turns round; another termination power cathode of ammeter pointer and setting value moving contact pin contact-relay normally opened contact J2-1; and it is electric that relay coil J2 is got, and relay coil J2 gets electric back and keeps self-locking by normally opened contact J2-1 adhesive, thereby has protected motor.
Claims (3)
1, a kind of reometer, it mainly comprises housing, be contained in circuit board and panel in the housing, panel-mounted pointer, be connected with housing two test connectors is characterized in that: be equipped with at the panel of reometer and decide contact pilotage and moving contact pin, an end of decide contact pilotage is connected with an end of moving contact pin and lead and also can touches pointer, one end of pointer is connected with another lead, and the other end of deciding contact pilotage is free end and can touches moving contact pin.
2, by the described a kind of reometer of claim 1, it is characterized in that: it is approximate L-shaped to decide contact pilotage, and a panel-mounted end of deciding contact pilotage, moving contact pin and pointer can be on an axial line.
3, by the described a kind of contactless electric motor protective device of claim 1, it is characterized in that: the other end of two leads is connected with housing, and two test connectors are set on housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274157 CN2513114Y (en) | 2001-12-12 | 2001-12-12 | Current meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274157 CN2513114Y (en) | 2001-12-12 | 2001-12-12 | Current meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2513114Y true CN2513114Y (en) | 2002-09-25 |
Family
ID=33678876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01274157 Expired - Fee Related CN2513114Y (en) | 2001-12-12 | 2001-12-12 | Current meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2513114Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187228A (en) * | 2019-05-29 | 2019-08-30 | 潘清云 | A kind of isolation distributor |
-
2001
- 2001-12-12 CN CN 01274157 patent/CN2513114Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187228A (en) * | 2019-05-29 | 2019-08-30 | 潘清云 | A kind of isolation distributor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |