Brahma Ignition transformer T20 15570001

The Brahma T20 ignition transformer (SKU 15570001) is a column-type step-up transformer designed for ignition in burners and boilers. It operates on a 220 V supply at 50 Hz, consuming 285 W (VA) with a current draw of 1.3 A. The transformer provides a secondary voltage of 5 kV and an ignition current of 23 mA across two high-voltage outputs, with a duty cycle of 66%. It features two primary and two secondary windings, a pressed metal enamel-coated housing, and IP00 protection. The unit includes an ignition cable with a length of 700 mm and screw connectors (Ø2.5 mm). Weighing 3.2 kg, its dimensions are 10.1 x 8 x 13.9 cm. Suitable for steam boilers and kitchen stoves, it is designed for burners firing light or heavy oil and supports a large number of restarts.

When selecting an ignition transformer of this type, ensure the supply voltage, frequency, and power consumption match the burner's electrical system. Verify the secondary voltage and current requirements of the ignition electrode. The mounting system must be compatible with the burner's bracket; various connection and mounting systems exist, so compare the physical dimensions and mounting hole patterns. The transformer's duty cycle (66%) must be adequate for the burner's operational cycle. Check the ignition cable length and connector type (screw Ø2.5 mm) to ensure proper connection.

Common failures include open or shorted windings, leading to no spark or weak spark. Insulation breakdown can cause arcing to the housing or ground, resulting in erratic ignition or tripping of circuit breakers. Overheating due to excessive duty cycle or poor ventilation may cause internal thermal damage. Check for visible cracks or burn marks on the housing, measure primary and secondary voltages with a multimeter, and inspect the ignition cable and connectors for wear or corrosion.