RO91042B1 - Method and device for testing a centrifugal relay - Google Patents

Method and device for testing a centrifugal relay

Info

Publication number
RO91042B1
RO91042B1 RO115598A RO11559884A RO91042B1 RO 91042 B1 RO91042 B1 RO 91042B1 RO 115598 A RO115598 A RO 115598A RO 11559884 A RO11559884 A RO 11559884A RO 91042 B1 RO91042 B1 RO 91042B1
Authority
RO
Romania
Prior art keywords
component
phase
continuous
period
comparison
Prior art date
Application number
RO115598A
Other languages
Romanian (ro)
Other versions
RO91042A2 (en
Inventor
Stelian Pascanu
Original Assignee
îNTREPRINDEREA "ELECTROMOTOR"
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 "ELECTROMOTOR" filed Critical îNTREPRINDEREA "ELECTROMOTOR"
Priority to RO115598A priority Critical patent/RO91042B1/en
Publication of RO91042A2 publication Critical patent/RO91042A2/en
Publication of RO91042B1 publication Critical patent/RO91042B1/en

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  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Motor And Converter Starters (AREA)

Abstract

Inventia se refera la o metoda si la un dispozitiv pentru testarea unui releu de pornire, centrifugal bipozitional, montat pe axul unui motor asincron monofazat. Metoda, conform inventiei, prevede compararea a doua nivele de tensiune continua obtinute prin injectarea unui curent constant în înfasurarile statorului motorului separarea componentei slternative a tensiunii de componenta continua, defazarea ei cu o jumatate de perioada si însumarea continua, defazarea ei cu o jumatate de perioada siînsumarea cu semnalul complect obtinut la bornele statorului motorului format din componenta alternativa nedefazata si componenta continua defazarea ei cu o jumatate de perioada si însumarea cu semnalul complet obtinut la bornele statorului motorului format din componenta alternativa nedefazata si componenta continua, compendsarea celor doua componente alternative si afisarea rezultatului compararii obtinut sub forma a doua nivele, un nivel aproximativ nul corespunzator unui releu decuplat. Dispozitivul, conform inventiei este constituit dintr-un generator de curent constant o cale de semnal directa si una defazata, ambele fiind conectate la intrarea neinversoare a unui sumator în configuratie neinversoare, a carui iesire este legata la intrarea neinversoare a unui comparator, pragul de comparatie fiind stabilit cu un potentiometru la intrarea inversoare.The invention relates to a method and to a device for testing a bi-phase centrifugal starting relay mounted on the axis of a single-phase asynchronous motor. The method according to the invention provides for the comparison of the two continuous voltage levels obtained by injecting a constant current into the stator windings of the motor, separating the component of the continuous component from the continuous component, its phase-out by half a period and the continuous summing, its phase-out by half a period and the complex signal obtained at the motor stator terminals formed by the undistributed alternate component and the component continues its phase shift by half a period and the summing with the fully obtained signal at the motor stator terminals consisting of the non-differentiated alternate component and the continuous component, the computation of the two alternative components and the display the result of the comparison obtained in the form of two levels, an approximately null level corresponding to a disconnected relay. According to the invention, the device consists of a constant current generator, a direct and a failed signal path, both of which are connected to the noninverting input of a non-invasive configuration, the output of which is connected to the non-inverse input of a comparator, the comparison threshold being set with a potentiometer at the inverting input.

RO115598A 1984-08-31 1984-08-31 Method and device for testing a centrifugal relay RO91042B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO115598A RO91042B1 (en) 1984-08-31 1984-08-31 Method and device for testing a centrifugal relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO115598A RO91042B1 (en) 1984-08-31 1984-08-31 Method and device for testing a centrifugal relay

Publications (2)

Publication Number Publication Date
RO91042A2 RO91042A2 (en) 1987-02-27
RO91042B1 true RO91042B1 (en) 1987-03-01

Family

ID=20115480

Family Applications (1)

Application Number Title Priority Date Filing Date
RO115598A RO91042B1 (en) 1984-08-31 1984-08-31 Method and device for testing a centrifugal relay

Country Status (1)

Country Link
RO (1) RO91042B1 (en)

Also Published As

Publication number Publication date
RO91042A2 (en) 1987-02-27

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