NO751393L - - Google Patents
Info
- Publication number
- NO751393L NO751393L NO751393A NO751393A NO751393L NO 751393 L NO751393 L NO 751393L NO 751393 A NO751393 A NO 751393A NO 751393 A NO751393 A NO 751393A NO 751393 L NO751393 L NO 751393L
- Authority
- NO
- Norway
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/36—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2430798A DE2430798C3 (de) | 1974-06-24 | 1974-06-24 | Anordnung zur Erfassung von Erdschlüssen im Läuferkreis einer schleifringlos über umlaufende Gleichrichter erregten Synchronmaschine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO751393L true NO751393L (de) | 1975-12-30 |
| NO137249B NO137249B (no) | 1977-10-17 |
| NO137249C NO137249C (no) | 1978-01-25 |
Family
ID=5919055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO751393A NO137249C (no) | 1974-06-24 | 1975-04-18 | Anordning til } konstatere jordslutninger i rotorkretsen hos en synkronmaskin som magnetiseres via roterende likeretter uten bruk av sleperinger |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4000464A (de) |
| JP (1) | JPS5117516A (de) |
| AT (1) | AT334458B (de) |
| BE (1) | BE830527A (de) |
| CA (1) | CA1044322A (de) |
| CH (1) | CH585476A5 (de) |
| DE (1) | DE2430798C3 (de) |
| FR (1) | FR2276595A1 (de) |
| GB (1) | GB1509931A (de) |
| NO (1) | NO137249C (de) |
| SE (1) | SE398692B (de) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5425446A (en) * | 1977-07-26 | 1979-02-26 | Mitsubishi Electric Corp | Blushless exciter protective device |
| JPS5820892B2 (ja) * | 1979-02-02 | 1983-04-26 | 小名浜堺化学株式会社 | 塩基性硫酸第二鉄の製造法 |
| JPS5826524A (ja) * | 1981-08-07 | 1983-02-17 | 三菱電機株式会社 | 交流発電機の接地検出装置 |
| JPS5826522A (ja) * | 1981-08-07 | 1983-02-17 | 三菱電機株式会社 | 交流発電機の接地検出装置 |
| JPS5826523A (ja) * | 1981-08-07 | 1983-02-17 | 三菱電機株式会社 | 交流発電機の接地検出装置 |
| JPS62247809A (ja) * | 1986-04-22 | 1987-10-28 | Nittetsu Mining Co Ltd | 溶液状の鉄系処理剤 |
| AU2003247097A1 (en) * | 2002-08-14 | 2004-03-03 | Koninklijke Philips Electronics N.V. | Module, electronic device and evaluation tool |
| US7498818B2 (en) * | 2006-08-25 | 2009-03-03 | Schweitzer Engineering Laboratories, Inc. | Apparatus and method for detecting a brush liftoff in a synchronous generator rotor circuit |
| US8405940B2 (en) * | 2009-10-13 | 2013-03-26 | Schweitzer Engineering Laboratories Inc | Systems and methods for generator ground fault protection |
| US10288688B2 (en) | 2014-07-24 | 2019-05-14 | Schweitzer Engineering Laboratories, Inc. | Systems and methods for monitoring and protecting an electric power generator |
| US9496707B2 (en) | 2014-12-22 | 2016-11-15 | Schweitzer Engineering Laboratories, Inc. | Generator protection element |
| US10498279B2 (en) * | 2015-11-23 | 2019-12-03 | Abb Schweiz Ag | Electromagnetic machine system having current injection for inductive excitation of windings |
| US10931097B2 (en) | 2017-09-25 | 2021-02-23 | Schweitzer Engineering Laboratories, Inc. | Generator stator ground protection using third harmonic |
| US10333291B2 (en) | 2017-09-25 | 2019-06-25 | Schweitzer Engineering Laboratories, Inc. | Multiple generator ground fault detection |
| CN108530936B (zh) * | 2018-05-22 | 2019-08-23 | 山东午阳化工股份有限公司 | 对氨基乙酰苯胺清洁化生产工艺 |
| US10797632B2 (en) | 2018-08-21 | 2020-10-06 | Schweitzer Engineering Laboratories, Inc. | Sensitive directional element for generator protection |
| US11316455B2 (en) | 2019-08-28 | 2022-04-26 | Schweitzer Engineering Laboratories, Inc. | Generator rotor turn-to-turn fault detection using fractional harmonics |
| JP2021053580A (ja) | 2019-09-30 | 2021-04-08 | 日鉄鉱業株式会社 | 高濃度鉄系凝集剤とその製造方法 |
| US10819261B1 (en) | 2019-10-25 | 2020-10-27 | Schweitzer Engineering Laboratories, Inc. | Security improvements for electric power generator protection |
| JP7333262B2 (ja) | 2019-10-29 | 2023-08-24 | 日鉄鉱業株式会社 | 高濃度鉄系凝集剤とその製造方法 |
| US11631972B2 (en) | 2020-12-16 | 2023-04-18 | Schweitzer Engineering Laboratories, Inc. | Accurate modeling of equipment overexcitation damage curves |
| US11946966B1 (en) | 2023-02-20 | 2024-04-02 | Schweitzer Engineering Laboratories, Inc. | Selective stator ground fault protection using positive-sequence voltage reference |
-
1974
- 1974-06-24 DE DE2430798A patent/DE2430798C3/de not_active Expired
-
1975
- 1975-04-18 NO NO751393A patent/NO137249C/no unknown
- 1975-04-18 AT AT298175A patent/AT334458B/de not_active IP Right Cessation
- 1975-05-15 FR FR7515201A patent/FR2276595A1/fr active Granted
- 1975-05-23 GB GB22940/75A patent/GB1509931A/en not_active Expired
- 1975-06-12 US US05/586,165 patent/US4000464A/en not_active Expired - Lifetime
- 1975-06-17 SE SE7506946A patent/SE398692B/xx unknown
- 1975-06-18 CH CH791575A patent/CH585476A5/xx not_active IP Right Cessation
- 1975-06-20 JP JP7642375A patent/JPS5117516A/ja active Pending
- 1975-06-20 CA CA229,824A patent/CA1044322A/en not_active Expired
- 1975-06-23 BE BE157582A patent/BE830527A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2276595A1 (fr) | 1976-01-23 |
| DE2430798A1 (de) | 1976-01-15 |
| DE2430798B2 (de) | 1978-07-27 |
| ATA298175A (de) | 1976-05-15 |
| US4000464A (en) | 1976-12-28 |
| GB1509931A (en) | 1978-05-04 |
| SE7506946L (sv) | 1975-12-29 |
| CA1044322A (en) | 1978-12-12 |
| SE398692B (sv) | 1978-01-09 |
| NO137249B (no) | 1977-10-17 |
| NO137249C (no) | 1978-01-25 |
| FR2276595B1 (de) | 1978-03-17 |
| JPS5117516A (de) | 1976-02-12 |
| DE2430798C3 (de) | 1979-03-29 |
| BE830527A (fr) | 1975-10-16 |
| CH585476A5 (de) | 1977-02-28 |
| AT334458B (de) | 1976-01-25 |