ES167486U - A circuit of motor protection. (Machine-translation by Google Translate, not legally binding) - Google Patents
A circuit of motor protection. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES167486U ES167486U ES0167486U ES167486U ES167486U ES 167486 U ES167486 U ES 167486U ES 0167486 U ES0167486 U ES 0167486U ES 167486 U ES167486 U ES 167486U ES 167486 U ES167486 U ES 167486U
- Authority
- ES
- Spain
- Prior art keywords
- circuit
- relay
- switch
- translation
- power supply
- 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.)
- Granted
Links
- 230000004927 fusion Effects 0.000 abstract 2
- 230000005284 excitation Effects 0.000 abstract 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Motor And Converter Starters (AREA)
Abstract
A motor protection circuit, especially for three-phase current, essentially characterized in that each of the phases (r, s, t) of the three-phase current has a fuse (f1, f2, f3), whose poles (a) are connected to the terminals of the coil of a relay (r, 1, r2, r3), whose activity depends on the fusion of said fuses (f1, f2, f2); each of said relays (r1, r2, r3) forming a switch (c1, c2, c3) in parallel of the supply circuit (X) of a mechanical interlocking relay (r4), which acts as a switch (c4) of the circuit power supply (y) of a contactor, or start-up element (r5), which constitutes a triple switch (c5), which governs the three-phase power supply (r, s, t) of the motor element (m); so that the fusion of one of the fuses (f1, f2, f3), causes the excitation of the corresponding relay (r1, r2, r3), closing the supply circuit (X) of the mechanical interlock relay (r4), the which in turn opens the supply circuit (y) of the contactor (r5) that disconnects, by means of its triple switch (c5) of the three-phase circuit (r, s, t), power supply of the electric motor (m), at the same time that, consequently, the replacement of the fuse blown and unlocking of the relay (r4), automatically achieves the start-up of the electric motor. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES1971167486U ES167486Y (en) | 1971-03-31 | 1971-03-31 | A MOTOR PROTECTION CIRCUIT. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES1971167486U ES167486Y (en) | 1971-03-31 | 1971-03-31 | A MOTOR PROTECTION CIRCUIT. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES167486U true ES167486U (en) | 1971-08-01 |
| ES167486Y ES167486Y (en) | 1972-03-01 |
Family
ID=8343815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES1971167486U Expired ES167486Y (en) | 1971-03-31 | 1971-03-31 | A MOTOR PROTECTION CIRCUIT. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES167486Y (en) |
-
1971
- 1971-03-31 ES ES1971167486U patent/ES167486Y/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES167486Y (en) | 1972-03-01 |
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