JPS4941743B1 - - Google Patents
Info
- Publication number
- JPS4941743B1 JPS4941743B1 JP44009485A JP948569A JPS4941743B1 JP S4941743 B1 JPS4941743 B1 JP S4941743B1 JP 44009485 A JP44009485 A JP 44009485A JP 948569 A JP948569 A JP 948569A JP S4941743 B1 JPS4941743 B1 JP S4941743B1
- 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
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault
Landscapes
- Emergency Protection Circuit Devices (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44009485A JPS4941743B1 (ja) | 1969-02-10 | 1969-02-10 | |
| US9009A US3668516A (en) | 1969-02-10 | 1970-02-05 | Apparatus for inspecting a.c. electric relay systems during the operation thereof by use of a high frequency modulated signal |
| GB1264751D GB1264751A (ja) | 1969-02-10 | 1970-02-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44009485A JPS4941743B1 (ja) | 1969-02-10 | 1969-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4941743B1 true JPS4941743B1 (ja) | 1974-11-11 |
Family
ID=11721525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP44009485A Pending JPS4941743B1 (ja) | 1969-02-10 | 1969-02-10 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3668516A (ja) |
| JP (1) | JPS4941743B1 (ja) |
| GB (1) | GB1264751A (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2379905A1 (fr) * | 1977-02-02 | 1978-09-01 | Lebocey Industrie | Appareil pour le controle d'un dispositif de protection differentiel |
| RU2485679C2 (ru) * | 2011-08-05 | 2013-06-20 | Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" | Устройство коммутации |
| CN106786415B (zh) * | 2016-11-28 | 2018-12-21 | 国家电网公司华中分部 | 一种零序反时限过流保护优化方法 |
| CN107015099B (zh) * | 2017-04-28 | 2023-09-12 | 苏州力生美半导体有限公司 | 一种交流故障检测电路及其检测方法 |
| RU2746556C1 (ru) * | 2020-04-14 | 2021-04-15 | Акционерное общество "Научно-исследовательский институт командных приборов" | Оптоэлектронное реле питания резервированных систем |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3424958A (en) * | 1966-03-31 | 1969-01-28 | Thomas A Groat | Apparatus and method for simulating electrical fault conditions in a protective relay system |
-
1969
- 1969-02-10 JP JP44009485A patent/JPS4941743B1/ja active Pending
-
1970
- 1970-02-05 US US9009A patent/US3668516A/en not_active Expired - Lifetime
- 1970-02-06 GB GB1264751D patent/GB1264751A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3668516A (en) | 1972-06-06 |
| GB1264751A (ja) | 1972-02-23 |