RO82477B1 - Apparatus for checking differential relays - Google Patents
Apparatus for checking differential relaysInfo
- Publication number
- RO82477B1 RO82477B1 RO104469A RO10446981A RO82477B1 RO 82477 B1 RO82477 B1 RO 82477B1 RO 104469 A RO104469 A RO 104469A RO 10446981 A RO10446981 A RO 10446981A RO 82477 B1 RO82477 B1 RO 82477B1
- Authority
- RO
- Romania
- Prior art keywords
- variable
- block
- relay
- current
- measured
- Prior art date
Links
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
Inventia se refera la un aparat pentru verificarea releelor diferentiale constituit dintr-un oscilator urmat de un amplificator de putere ce furnizeaza tensiune variabila pe un transformator de curent, iar curentul de iesire variabil e masurat de un bloc de masura. Un bloc oscilator de frecventa variabila în trepte ataca un alt amplificator de putere ce furnizeaza o tensiune variabila pe sarcina constituita de transformatorul de curent, curentul variabil în amplitudine si frecventa fiind masurat de un bloc de masura. Un bloc electronic supravegheaza actionarea releului si se verifica caracteristica de frecventa a filtrului de armonica a doua a releului.The invention relates to an apparatus for checking differential relays consisting of an oscillator followed by a power amplifier providing variable voltage on a current transformer and the variable output current is measured by a measurement block. A step variable variable oscillator block attacks another power amplifier that supplies a variable voltage to the load constituted by the current transformer, the amplitude variable current and the frequency being measured by a measurement block. An electronic block monitors the action of the relay and checks the frequency characteristic of the second harmonic filter of the relay.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO81104469A RO82477A2 (en) | 1981-06-02 | 1981-06-02 | APPARATUS FOR VERIFYING DIFFERENTIAL RELAYS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO81104469A RO82477A2 (en) | 1981-06-02 | 1981-06-02 | APPARATUS FOR VERIFYING DIFFERENTIAL RELAYS |
Publications (2)
Publication Number | Publication Date |
---|---|
RO82477B1 true RO82477B1 (en) | 1983-08-30 |
RO82477A2 RO82477A2 (en) | 1983-09-26 |
Family
ID=20110025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO81104469A RO82477A2 (en) | 1981-06-02 | 1981-06-02 | APPARATUS FOR VERIFYING DIFFERENTIAL RELAYS |
Country Status (1)
Country | Link |
---|---|
RO (1) | RO82477A2 (en) |
-
1981
- 1981-06-02 RO RO81104469A patent/RO82477A2/en unknown
Also Published As
Publication number | Publication date |
---|---|
RO82477A2 (en) | 1983-09-26 |
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