Kromschroder Ignition transformer TGI 8-12/100QE 84391230

The Kromschroder TGI 8-12/100QE (SKU 84391230) is an ignition transformer used in gas and oil burners. It steps up the mains voltage to a level sufficient to create a spark across an ignition electrode gap. The transformer is energized only during the ignition phase of the burner start sequence, as commanded by the burner control. It operates with an ignition electrode and a high-tension ignition cable. This unit is designed for applications per the Machinery Directive 2006/42/EC and complies with CSA C22.2 No. 13-1962. The secondary insulation is insulated, and it is intended for the ignition phase only.

When selecting a replacement ignition transformer of this type, key parameters include primary voltage (commonly 230 V, but 110 V and 24 V versions exist), secondary voltage and current, duty cycle, mounting pattern, terminal type, and connector layout for the ignition cable. The ignition cable must be silicone-insulated to withstand high voltage and heat. Verify the part against the original by its name and codes before fitting.

Typical failures of ignition transformers include internal short circuits or open windings, leading to no spark or weak spark at the electrode. A damaged or brittle ignition cable can leak current to earth, falsely suggesting a faulty transformer. Check the cable insulation and connections, and measure secondary output if possible.