Industry Applications
Cases that must carry out insulation resistance test
After disassembly and repair
Any maintenance such as opening the enclosure, replacing components, re-soldering, applying conformal coating or potting sealing must be tested.
After water ingress, dampness or condensation
Water splashing, soaking, cabinet water leakage, high ambient humidity, or condensation inside the ballast.
Corrosion and heavy dust accumulation
Especially in wastewater plants with high humidity and corrosive gas such as hydrogen sulfide, PCB oxidation, mildew and chemical corrosion.
Leakage and frequent tripping
RCD trips immediately after power-on, electric shock feeling on the metal casing, frequent leakage protection action.
Overheating, sparking or burning smell
Possible internal insulation breakdown and creepage; insulation test is required before re-powering.
Reuse after long-term idle storage
Ballasts stored idle for months easily absorb moisture; insulation inspection is mandatory before putting into operation again.
After IP protection, potting or resealing
After waterproof sealing, glue filling or replacing sealing parts, insulation must be verified to meet standard.
2. Cases that do not need a special test
Brand new original sealed ballasts installed directly without disassembly.
Long-term stable operation with no failure, no dampness and no corrosion.
3. Simple Summary
Any electronic ballast that has been disassembled, repaired, waterlogged, dampened, corroded, tripped with leakage, idle for a long time, or re-sealed for waterproofing, must undergo an insulation resistance test.
