Verificarile Periodice - ABB HD4/ESB Series Installation And Service Instructions Manual

9. Verificarile periodice

Inainte de a incepe orice operatii de verificare
!
asigurativa ca arcul mecanismului de actionare
nu este armat si intrerupatorul este deschis.
9.1. Generalitati
In conditii normale de functionare intrerupatorul este fara
mentenanta. Frecventa si tipul verificarilor depind de con-
ditiile de functionare ale intrerupatorului. Trebuie tinut cont
de diferiti facotori ca: numarul de actionari, valoarea curentului
intrerupt, factorul de putere si mediul de lucru.
In urmatorul paragraf este prezentat un tabel in care indica
intervalele de timp recomandate pentru verificari.
9.2. Programul de verificare
OPERATIA DE VERIFICARE
CHECKING OPERATION
1
Vor fi realizate cinci actionari mecanice
inchis-deschis.
Carry out five mechanical opening closing
operations.
2
Inspectie vizuala a polilor (partilor din rasina)
Visual inspection of the poles (parts in
resin).
3
Inspectie vizuala a mecanismul de actionare.
Visual inspection of the operating mecha-
nism and transmission.
4
Verificarea contactelor fixe (izolante).
Visual inspection of the isolating contacts.
5
Masurarea rezistentei de izolatie
Measuring the insulation resistance.
Verificarea sistemului de interblocare.
6
Checking interlock operation.
Dupa 10,000 actionari sau dupa 10 ani de functionare
intr-un mediu poluat este recomandat sa se contacteze
reprezentanti ABB perntru realizarea verificarii intrerupatorului.
36/40 - 647016/002 M3650 - 2000/05/24 it-en
9. Periodical checking
Before carrying out any operation, make sure that
!
the operating mechanism springs are discharged
and that the apparatus is in the open position.
9.1. General
During normal service, the circuit-breakers are maintenance-
free. The frequency and sort of inspections basically depend
on the service conditions. Various factors must be taken into
account: frequency of operations, interrupted current values,
relative power factor and the installation ambient.
The following paragraph gives the checking programme table,
showing the relevant time intervals.
As far as the time interval between these operations is con-
cerned, it is advisable to comply with specifications given in the
table, at least during the first check. On the basis of the results
obtained during the periodic inspections, set the optimal time
limits for carrying out the following operations.
9.2. Checking programme
INTERVALUL DE TIMP
TIME INTERVAL
1 an.
1 year.
5 ani sau 5.000 manevre.
5 years or 5,000 operations.
5 ani sau 5.000 manevre.
5 years or 5,000 operations.
5 ani sau 5.000 manevre.
5 years or 5,000 operations.
5 ani sau 5.000 manevre.
5 years or 5,000 operations.
5 ani.
5 years.
After 10,000 operations or after 10 years, for installation in
polluted and aggressive ambients, it is advisable to contact an
ABB service center to have the circuit-breaker checked.
CRITERIU
CRITERIA
Intrerupatorul trebuie sa functioneze normal fara
opriri in pozitii intermediare.
The circuit-breaker must operate normally without
stopping in intermediate positions
Izolatorul din rasina nu trebuie sa prezinte urme de
descarcari partiale, praf, mizerie, etc.
The parts in resin must be free of any accumulation of
dust, dirt, cracks, discharges or traces of surface
discharges.
Elementele mecanismului nu trebuie sa prezinte nici
o deformare, iar suruburile, piulitele trebuie sa fie stranse
The elements must be free of any deformation.
Screws, nuts, bolts, etc. must be tight.
Contactele izolante nu trebuie sa fie deformate sau
erodate.
Elementele contactelor vor fi degresate.
The isolating contacts must be free of any deforma-
tion or erosion.
Lubricate the contact elements with grease type 5RX
Moly.
Vezi par. 8.1. punctul 2.
See para. 8.1. point 2.
Interblocajele trebuie sa functioneze corect
mente.
The interlocks provided must operate correctly.