Diagnosis of High Voltage Insulators Made of Ceramic Using Spectrophotometry

Table 6

Comparison of the dominating wavelengths present in light emission of value for all tested dielectrics and ceramic insulators.

System symbol	⁢Values and ranges of recorded optical waves λ (nm) exhibiting intensity
WPK 3	203, 296–298	311–318, 333–340, 351–360, 369–382, 390–396, 397–399	400-401, 404–407, 420, 425–428, 434-435	745, 933, 1073
WPK 5	203, 295–299	309–318, 328-329, 331–341, 349–362, 366–383, 386, 388–399	400–407, 414, 416, 418–421, 424–428, 431–435, 449, 456–458	607, 653-654, 658–663, 667–671, 676–678, 724, 745, 774, 793, 913, 933, 1062, 1073
WPK 7	203	306–317, 335–339, 352–359, 374–382, 386, 393-394, 399	400, 405-406, 423	587–594, 640, 720, 745, 766–768, 770–771, 793, 933
WPK 9	203	315–317, 336–338, 354, 356–359, 375-376, 379–381	—	660, 724, 813, 933
WPK 11	—	313–317, 335–339, 353–359, 374–377, 379–382, 399	400, 406	660, 724, 739
LS	—	315–317, 335–338, 353–358, 379–381	—	724
LK	243	312–317, 329, 333–339, 352–371, 373–382, 398-399	400, 404–406, 435, 460	724, 933