Fida Dual-spark transformer TE081S05

The Fida Dual-spark transformer TE081S05 is a compact ignition transformer designed for continuous operation (ED 100%) in gas and oil burners. It operates with a supply voltage of 400 V at 50 Hz, providing a secondary voltage of 8 kV (2 x 4 kV) and a secondary current of 10 mA. The transformer features a sealed plastic housing with IP44 ingress protection and silicone-insulated cables, suitable for ambient temperatures up to 35 °C. It is a dual-spark type with 2 poles, ensuring ignition in industrial burner applications.

When selecting a replacement ignition transformer of this type, verify that the primary voltage (e.g., 230 V, 400 V), secondary voltage and current, duty cycle, and physical dimensions match the existing unit. The terminal layout and cable connector pattern must also be compatible with the burner's wiring. Ensure the transformer is rated for the required duty cycle to avoid overheating during repeated ignition attempts.

Common failures of ignition transformers include internal short circuits, open windings, or insulation breakdown, leading to weak or no spark at the electrodes. Symptoms may include burner ignition failure, intermittent operation, or lockout. Check the high-voltage cable for hardening or cracks, as these can leak spark to earth and mimic a faulty transformer. Inspect the transformer for signs of overheating or physical damage before replacement.