Diagnosis of High Voltage Insulators Made of Ceramic Using Spectrophotometry

Table 2

Dominant wavelengths present in light emission of value .

Wavelength interval; (nm)	Dominant wavelengths and intervals present in light emission of value; (nm)
λ = 200–299	203, 296–298
λ = 300–399	311–318, 333–340, 351–360, 369–382, 390–396, 397–399
λ = 400–499	400-401, 404–407, 420, 425–428, 434-435
λ > 500	745, 933, 1073