JPS4997248A - - Google Patents
Info
- Publication number
- JPS4997248A JPS4997248A JP11542073A JP11542073A JPS4997248A JP S4997248 A JPS4997248 A JP S4997248A JP 11542073 A JP11542073 A JP 11542073A JP 11542073 A JP11542073 A JP 11542073A JP S4997248 A JPS4997248 A JP S4997248A
- Authority
- JP
- Japan
- 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.)
- Pending
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
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA160,071A CA960754A (en) | 1972-12-28 | 1972-12-28 | Circuit for detecting phase unbalance in a three phase supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4997248A true JPS4997248A (en:Method) | 1974-09-13 |
Family
ID=4095401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11542073A Pending JPS4997248A (en:Method) | 1972-12-28 | 1973-10-16 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS4997248A (en:Method) |
| CA (1) | CA960754A (en:Method) |
| DE (1) | DE2351159A1 (en:Method) |
| FR (1) | FR2212667A1 (en:Method) |
| GB (1) | GB1450694A (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2810046C2 (de) * | 1978-03-08 | 1980-02-07 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren und Vorrichtung zur Messung von elektrischen Strömen und/oder Spannungen in einer Mehrzahl von Strom- bzw. Spannungskreisen |
| CH632108A5 (en) * | 1978-07-14 | 1982-09-15 | Sprecher & Schuh Ag | Electrical circuit for simulating the thermal behaviour of a three-phase electrical apparatus or machine |
| FR2696592B1 (fr) * | 1992-10-05 | 1994-12-02 | Merlin Gerin | Déclencheur électronique comportant une protection terre. |
| WO2025043495A1 (zh) * | 2023-08-29 | 2025-03-06 | 西门子股份公司 | 多相电流平衡状态表示方法、装置、电子设备和存储介质 |
-
1972
- 1972-12-28 CA CA160,071A patent/CA960754A/en not_active Expired
-
1973
- 1973-10-10 FR FR7336271A patent/FR2212667A1/fr not_active Withdrawn
- 1973-10-11 GB GB4757773A patent/GB1450694A/en not_active Expired
- 1973-10-11 DE DE19732351159 patent/DE2351159A1/de active Pending
- 1973-10-16 JP JP11542073A patent/JPS4997248A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1450694A (en) | 1976-09-22 |
| FR2212667A1 (en:Method) | 1974-07-26 |
| DE2351159A1 (de) | 1974-07-11 |
| CA960754A (en) | 1975-01-07 |