Insulation monitoring system ISOM Digiware D-55/D-75 Control and power supply interfaces - for power networks or control/command circuits ISOM Digiware D-55h Control and power supply interfaces - For medical premises ISOM Digiware L-60h Insulation control system - For medical premises ISOM Digiware L-60 Control module for insulation and fault location - for power networks or control/command circuits ISOM Digiware F-60 Fault-locating module - For power distribution and medical facilities ISOM Digiware T15 Connects to ISOM Digiware F-60 modules - For locating core balance transformers