Industry Applications
Check nameplate parameters (primary method)
Collect data from lamp and ballast nameplates: lamp type (low-pressure / medium-pressure), rated power, operating current, single-ended / double-ended wiring.
Matching requirements:
Identical rated power;
Consistent lamp type: low-pressure lamp cannot use medium-pressure ballast and vice versa;
Matching wiring structure (single-ended or double-ended).
2. On-site power-on test
Normal matching performance
The lamp ignites steadily at once without flickering; moderate temperature rise; no frequent protection shutdown, no abnormal noise.
Mismatch symptoms
Ballast power > lamp power
Lamp lights up but overheats; tube ends blacken rapidly; accelerated light decay.
Ballast power < lamp power
Hard ignition, continuous flickering; ballast overheats quickly and triggers protection frequently.
3. Instrument verification
Measure actual lamp operating current:
Current close to rated value → well matched
Current higher than rated → overrated ballast
Current lower and unstable → underrated ballast
4. Hidden matching requirements
Medium-pressure UV system adopts one ballast for one lamp only.
Starting voltage and maximum allowable cable length shall also comply with specifications.
Standard judgment checklist
Consistent nameplate specifications
Stable ignition without flicker during operation
Measured operating current meets lamp rating
All three conditions satisfied = properly matched.
