Osram QT-FIT8 Special Lighting - 73 W

This ballast is designed for use with 3x18W and 4x18W fluorescent lamps.

The Osram QT-FIT8 3x18,4x18 has an expected lifetime of 50,000 hours under normal operating conditions.

While it provides efficient lighting, it is specifically designed and optimized for use in emergency lighting systems.

The ballast can operate reliably within a temperature range of -15 to 50 °C.

The AC input voltage range is 198 - 264 V, and the supply voltage is 220 - 240 V.

Yes, installation should be performed by a qualified electrician to ensure safety and compliance with electrical codes.

Filament preheating ensures optimal and rapid lamp ignition, which is crucial for emergency lighting and also contributes to extending the lifespan of the fluorescent lamps.

Verify that the power supply is connected and within the operating voltage range. Check that the fluorescent lamps are correctly seated in their holders and are compatible with the ballast (3x18W or 4x18W). Ensure the ballast is correctly wired according to the diagram.

Check for loose lamp connections or a faulty lamp. Ensure the ballast is receiving stable power. If the issue persists, the ballast may need to be replaced.

A faint hum is normal. Loud buzzing or clicking noises may indicate an issue with the ballast or the connected lamps. Disconnect power and consult a qualified electrician.

Ensure the fixture provides adequate ventilation and that the ballast is not obstructed. Check for excessive input voltage or a short circuit. Overheating can lead to premature failure.