Kromschroder Ignition transformer TZI 8-12/100QT 84391131

The Kromschroder TZI 8-12/100QT is an ignition transformer used to generate a high-voltage spark for igniting gas or liquid fuel burners. It operates from a 120 V AC supply at 50 Hz, producing a secondary voltage of 8 kV with a secondary current of 9 mA. The transformer has a 100% duty cycle, allowing continuous operation, and is designed for installation in a control cabinet with IP00 protection. It features a single-pole output and is certified to CE and UL standards.

When selecting a replacement ignition transformer of this type, verify that the supply voltage, secondary voltage, and secondary current match the original specifications. The duty cycle must be suitable for the intended operating mode, and the mounting style should fit the existing control cabinet. Ensure the high-voltage cable is silicone-insulated to withstand the voltage and heat, and check the electrode gap before installation.

Common failures of ignition transformers include internal short circuits or open windings, often caused by overheating or moisture ingress. Symptoms may include no spark at the electrode, weak spark, or intermittent ignition. Check the high-voltage cable for cracks or hardening, as this can cause current leakage to ground, and verify the electrode gap is correct before replacing the transformer.