CH288007A - Differential electromagnetic relay for the protection of three-phase electrical machines. - Google Patents
Differential electromagnetic relay for the protection of three-phase electrical machines.Info
- Publication number
- CH288007A CH288007A CH288007DA CH288007A CH 288007 A CH288007 A CH 288007A CH 288007D A CH288007D A CH 288007DA CH 288007 A CH288007 A CH 288007A
- Authority
- CH
- Switzerland
- Prior art keywords
- protection
- electromagnetic relay
- electrical machines
- phase electrical
- differential electromagnetic
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
- H02H3/353—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system involving comparison of phase voltages
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH288007T | 1950-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH288007A true CH288007A (en) | 1952-12-31 |
Family
ID=4486042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH288007D CH288007A (en) | 1950-12-20 | 1950-12-20 | Differential electromagnetic relay for the protection of three-phase electrical machines. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH288007A (en) |
-
1950
- 1950-12-20 CH CH288007D patent/CH288007A/en unknown
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