Skoči na glavni sadržaj

Izvorni znanstveni članak

Absorption index of insulation at end of service life – Part I

Vitaly Gurin ; Kharkov Polytechnic Institute


Puni tekst: engleski pdf 501 Kb

str. 98-105

preuzimanja: 125

citiraj


Sažetak

Absorption Index (AI) remains valid for old-aged unsealed transformers as a simple and effective method of non-destructive control insulation.
The reasons for AI decrease within transformer operation are insulation moistening and contamination. Seven gradation levels of the insulation condition and algorithm of the operating
procedures are proposed depending on the value of the measured AI and its variation in time. Along with AI, it is recommended to measure the polarisation index (PI) and the PI-2 (R600/R15 ratio).

Ključne riječi

absorption index, cellulose insulation, insulation resistance, moisture, polarization index

Hrčak ID:

249901

URI

https://hrcak.srce.hr/249901

Posjeta: 238 *