Brahma Ignition transformer T11/M 15094721

The Brahma 15094721 T11/M ignition transformer is a single-pole device designed for burners using liquid or gaseous fuels. It operates on a 220 V, 50 Hz supply, delivering a secondary voltage of 9 kV (15 kV peak) with a secondary current of 20 mA. The transformer has a duty cycle of 33% in 3 minutes, consumes 120 W, and weighs 2 kg. Its construction features a shell-shaped magnetic circuit, polyester resin insulation, and a radio interference suppression screen. The device measures 110x96x78 mm and is rated IP00.

When selecting an ignition transformer of this type, verify that the supply voltage, frequency, and output voltage/current match the burner's requirements. Check the mounting system and electrical connection type (e.g., screw terminal) to ensure compatibility with existing wiring and brackets. The transformer can be installed in any position, but the ignition cable length should be minimized to reduce interference. Ensure proper grounding of the transformer and the system.

Common failures include open or shorted windings, insulation breakdown, or damage to the high-voltage output. Symptoms may include weak or no spark, intermittent ignition, or excessive noise. Check the transformer's input voltage, output spark, and insulation resistance. Also inspect the ignition cable and electrodes for wear or incorrect gap.