Cofi Ignition transformer TRS1020

The Cofi Ignition transformer TRS1020 is a high-voltage ignition transformer designed to generate a spark in automatic ignition systems for gas, diesel, and dual-fuel burners. It operates with a supply voltage of 230 V at 50 Hz, drawing a current of 1.1 A. The secondary voltage is 5 kV, and the ignition cable insulation is silicone-insulated. This transformer is used in boiler plants and industrial burners requiring a stable high-voltage source for ignition electrodes.

Parts of this type are selected by matching the primary voltage (230 V is common, but 110 V and 24 V variants exist), secondary voltage and current, duty cycle, mounting and terminal arrangement, and cable connector pattern. Before ordering, measure the mounting dimensions and compare the terminal layout with the existing unit. Ensure the high-voltage cable connector matches the electrode assembly.

Typical failures include internal short circuits or open windings, leading to no spark or weak spark. The burner may fail to ignite or lockout after repeated ignition attempts. Check the high-voltage cables for hardening or cracking, as a leak to earth can mimic a failed transformer. Also verify the primary voltage and connections before condemning the transformer.