Kromschroder Ignition transformer 84391030

The Kromschroder ignition transformer 84391030, also known as TGI7.5-20/33R, generates a stable high-voltage spark for igniting gas and oil-fired burners. It operates with a supply voltage of 115 V and a frequency of 50 Hz, providing a secondary voltage of 7.5 kV and a secondary current of 20 mA. The transformer has a duty cycle of 33% and an ingress protection rating of IP65. It complies with the machinery directive 2006/42/EC and is certified to CSA C22.2 No. 13-1962.

Ignition transformers of this type are selected by matching the supply voltage, secondary voltage, and current ratings to the burner's requirements. The mounting form and dimensions must be compatible with the existing bracket or enclosure. Before ordering, verify the frequency and duty cycle to ensure they align with the application's operational cycle. The ingress protection rating should be suitable for the installation environment.

Common failure modes for ignition transformers include internal short circuits, open windings, or insulation breakdown, leading to no spark or weak spark. When a transformer fails, the burner may not ignite, causing the system to lock out or cycle repeatedly. Check for visible damage, measure the secondary voltage with a suitable probe, and inspect the high-voltage cable and connections for wear or corrosion.