JPS4839943A - - Google Patents
Info
- Publication number
- JPS4839943A JPS4839943A JP8639072A JP8639072A JPS4839943A JP S4839943 A JPS4839943 A JP S4839943A JP 8639072 A JP8639072 A JP 8639072A JP 8639072 A JP8639072 A JP 8639072A JP S4839943 A JPS4839943 A JP S4839943A
- 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
- H02H3/347—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 using summation current transformers
-
- 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
- H02H3/02—Details
- H02H3/027—Details with automatic disconnection after a predetermined time
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17588071A | 1971-08-30 | 1971-08-30 | |
| US17611471A | 1971-08-30 | 1971-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4839943A true JPS4839943A (en) | 1973-06-12 |
Family
ID=26871657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8639072A Pending JPS4839943A (en) | 1971-08-30 | 1972-08-30 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4839943A (en) |
| AU (1) | AU467752B2 (en) |
| DE (1) | DE2242216A1 (en) |
| GB (1) | GB1394455A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5023630U (en) * | 1973-06-27 | 1975-03-17 | ||
| JPS54152938U (en) * | 1978-04-15 | 1979-10-24 | ||
| FR2426048A1 (en) * | 1978-08-08 | 1979-12-14 | Ciba Geigy Ag | |
| US4935516A (en) * | 1988-01-29 | 1990-06-19 | Ube Industries, Ltd. | Process for preparing 4-hydroxypyrimidine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT385155B (en) * | 1984-08-10 | 1988-02-25 | Schrack Elektronik Ag | CIRCUIT ARRANGEMENT FOR CONTROLLING A MAINS SWITCHING DEVICE |
| CN106597190B (en) * | 2016-11-21 | 2023-07-18 | 中车大连电力牵引研发中心有限公司 | Grounding detection circuit and method |
| CN112034283B (en) * | 2020-08-19 | 2023-04-07 | 重庆尚翔电气技术有限公司 | Device, system and process for detecting and positioning aluminum electrolysis cell ground fault |
-
1972
- 1972-07-20 AU AU44766/72A patent/AU467752B2/en not_active Expired
- 1972-07-25 GB GB3466572A patent/GB1394455A/en not_active Expired
- 1972-08-28 DE DE19722242216 patent/DE2242216A1/en active Pending
- 1972-08-30 JP JP8639072A patent/JPS4839943A/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5023630U (en) * | 1973-06-27 | 1975-03-17 | ||
| JPS54152938U (en) * | 1978-04-15 | 1979-10-24 | ||
| FR2426048A1 (en) * | 1978-08-08 | 1979-12-14 | Ciba Geigy Ag | |
| US4935516A (en) * | 1988-01-29 | 1990-06-19 | Ube Industries, Ltd. | Process for preparing 4-hydroxypyrimidine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1394455A (en) | 1975-05-14 |
| DE2242216A1 (en) | 1973-03-08 |
| AU467752B2 (en) | 1975-12-11 |
| AU4476672A (en) | 1974-02-07 |