Cofi Ignition transformer TRS830P/6

The Cofi TRS830P/6 is an ignition transformer designed for use in liquid fuel burners, generating a high-voltage spark to ignite the fuel-air mixture. It operates on a 230 V, 50 Hz supply, drawing a primary current of 1.5–1.6 A, and produces a secondary voltage of 8 kV with a peak of 11 kV and a secondary current of 30 mA. The transformer has a duty cycle of 25% ED within a 4-minute period and features a traditional electromagnetic construction with a grounded pole. It is epoxy-potted for protection against moisture, vibration, and overheating, and includes a standard ø 4 mm ignition cable connector. The unit measures 520 x 110 x 66 mm, weighs 1.94 kg net, and is certified to CEI EN 61558-2-3.

When selecting an ignition transformer of this type, verify that the primary voltage and frequency match the burner's supply, and that the secondary voltage and current are suitable for the electrode gap and burner design. The duty cycle must align with the ignition sequence of the burner control. Check the physical mounting dimensions, terminal type, and cable connector pattern to ensure compatibility with the existing setup. Before ordering, compare the transformer's specifications with the original part's data, and inspect the ignition cables for damage, as hardened or cracked insulation can cause spark leakage and mimic transformer failure.

Common failure modes for ignition transformers include internal short circuits, open windings, or insulation breakdown, which can result in no spark, weak spark, or intermittent ignition. The burner may fail to light, lock out, or cycle repeatedly. Check for visible signs of overheating, such as discoloration or a burnt smell, and test the primary and secondary circuits with appropriate instruments. Also inspect the high-voltage cable and electrode connections for wear or corrosion, as these can cause similar symptoms.