Will mismatched power between ballast and lamp affect color temperature?

Yes, mismatched power changes plasma temperature and mercury vapor pressure inside the tube, resulting in color temperature shift and spectral deviation.

Higher-power ballast with low-power lamp

Excessive current raises plasma temperature, shifting spectrum to shorter wavelengths with higher color temperature. Black tungsten deposits on tube walls filter light, making the tube look colder and whiter. High temperature damages mercury amalgam and reduces the proportion of effective 254nm UV.

Lower-power ballast with high-power lamp

Insufficient power leads to unstable arc and low plasma temperature, shifting spectrum to longer wavelengths with lower color temperature. Dim flickering light shows a dull gray-blue tone, and UV radiation output declines.

Note: For UV disinfection lamps, matching rated power keeps standard mercury vapor pressure and discharge temperature, maintaining original color temperature and stable 254nm UV spectrum.