Electrical Safety for Inductive Heating and Hardening

In the metalworking industry, modern induction furnaces are used. Through coils (inductors), these furnaces induce cyclones inside the metal workpiece to be heated. These furnaces are used for melting, forging, and hardening, among other things. For these furnaces to operate effectively, high electrical power is required.

This electrical power is taken from the electricity grid via transformers and special frequency converters (e.g., inverters). The inductors are typically water-cooled. This leads to various potential sources of ground faults, possibly resulting in unexpected production loss. Bender has developed solutions to monitor the low insulation level and ensure fail-safe operation and protection. These devices ensure that inductive heating and hardening are done efficiently and, most importantly, safely.