CN2151537Y - Open-phase protector - Google Patents
Open-phase protector Download PDFInfo
- Publication number
- CN2151537Y CN2151537Y CN 93205704 CN93205704U CN2151537Y CN 2151537 Y CN2151537 Y CN 2151537Y CN 93205704 CN93205704 CN 93205704 CN 93205704 U CN93205704 U CN 93205704U CN 2151537 Y CN2151537 Y CN 2151537Y
- Authority
- CN
- China
- Prior art keywords
- phase
- relay
- protection device
- contactor
- utility
- 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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- Fuses (AREA)
Abstract
The utility model relates to an emergency protection device, which solves the problem of simplifying structure, practicality, etc. The emergency protection device is composed of insulation housing, an electric magnet, a relay, a connection fixing element, etc. The emergency protection device is characterized in that the insulation housing is provided with the relay, an armature and a restoring spring and is connected with a contactor; the emergency protection device adopts a three phase four wire system, and when any phase is interrupted or short circuit, the emergency protection device trips at once; if the phase of the live wire of the relay is interrupted, the armature can not be attracted, and the contactor cuts off power supply; even a zero line is interrupted, the relay can not work likewise; if one phase of the other two phases is power off, the contactor can not be attracted because of power off. The utility model has the advantages of small size, simple structure, and safety. The utility model can be widely used for the protection of electric appliances.
Description
The utility model relates to emergency protective device.
Existing motor phase failure protector or transistor protection device, structure is more complicated all, and performance is not ideal enough, and cost is also higher, still lacks dependable performance and the better simply emergency protective device of structure in practice.
The purpose of this utility model just is to provide the open phase protection that a kind of volume is small and exquisite, simple in structure, cost is lower, safe and reliable, practical.
The purpose of this utility model is achieved in that phase failure protector; adopt three-phase four-wire system; form by insulation crust, electromagnet, relay and connect fixed parts etc., it is characterized in that being equiped with in the insulation crust relay, armature, back-moving spring, and be connected with contactor in addition.
Technique scheme mainly is by relay coil energising back adhesive armature, connects magnetic switch, makes the contactor adhesive and works.Because contactor is to work by the adhesive of the magnetic relay that adopts 220 voltage sources.So when any one broken string or short circuit when (comprising zero line) mutually, the utility model trips immediately, thereby reaches the purpose of protection at electrical appliance.
The utility model is described in further detail below by drawings and Examples.
Fig. 1 is the utility model surface structure schematic diagram.
Fig. 2 is the utility model relay coil schematic top plan view.
Fig. 3 looks schematic diagram for Fig. 2 master.
Fig. 4 is Fig. 2 schematic side view.
Fig. 5 is the utility model line map.
Mark among the figure: 1 insulation crust, 2 fuses, 3 insulators, 4 back-moving springs, 5 armature and relay coil base, 6 relay coils, 7 armature, 8 base set bolts, A, B, C, O phase, contact, D motor, CJ contactor, CJ1, CJ2, CJ3 contact.
As shown in the figure: insulation crust is provided with mounting or dismounting and connects connection screw, the screw of usefulness.Three contact one ends of contactor join with three protectors respectively, and end joins with the phase line of motor in addition; Relay coil then with C mutually, O links, and the two ends of contactor coil is connected with A, B respectively.If during manual operation, insert locking press button again and get final product.
Claims (2)
1, phase failure protector adopts three-phase four-wire system, is made up of insulation crust, electromagnet, relay and connect fixed parts etc., it is characterized in that being equiped with in the insulation crust relay, armature, back-moving spring, and is connected with contactor in addition.
2, phase failure protector as claimed in claim 1 is characterized in that insulation crust is provided with screw, the screw of mounting or dismounting and connection usefulness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93205704 CN2151537Y (en) | 1993-03-15 | 1993-03-15 | Open-phase protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93205704 CN2151537Y (en) | 1993-03-15 | 1993-03-15 | Open-phase protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2151537Y true CN2151537Y (en) | 1993-12-29 |
Family
ID=33788905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93205704 Expired - Fee Related CN2151537Y (en) | 1993-03-15 | 1993-03-15 | Open-phase protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2151537Y (en) |
-
1993
- 1993-03-15 CN CN 93205704 patent/CN2151537Y/en not_active Expired - Fee Related
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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 |