RO82477B1 - Apparatus for checking differential relays - Google Patents

Apparatus for checking differential relays

Info

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
Application number
RO104469A
Other languages
Romanian (ro)
Other versions
RO82477A2 (en
Inventor
Ion Nedelcu
Alexandru Moise
Corneliu Stan
Original Assignee
îNTREPRINDEREA DE RETELE ELECTRICE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by îNTREPRINDEREA DE RETELE ELECTRICE filed Critical îNTREPRINDEREA DE RETELE ELECTRICE
Priority to RO81104469A priority Critical patent/RO82477A2/en
Publication of RO82477B1 publication Critical patent/RO82477B1/en
Publication of RO82477A2 publication Critical patent/RO82477A2/en

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  • 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.

RO81104469A 1981-06-02 1981-06-02 APPARATUS FOR VERIFYING DIFFERENTIAL RELAYS RO82477A2 (en)

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)

Also Published As

Publication number Publication date
RO82477A2 (en) 1983-09-26

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