Isolated power panels are used in group 2 rooms in medical locations, and they consist of auxiliary devices and test combinations such as isolated transformer, insulation monitoring device and insulation fault location devices.
In the IT system different from TN and TT systems, when an insulation failure occurs, IT systems ensures that there is no electrical problem by preventing the circuit breakers from tripping and interrupting the system. The medical equipment continues to function, the fault currents are reduced to non- critical values, and the energy interruption is prevented.
Insulation level is continuously monitored by the isolated power panels and if a value less than 50 kΩ is detected alarm is created and logged. Aforementioned alarm can also be displayed through the control panel in the operating rooms and local and remote alarm panels.
Isolated power panels, which have a fault location detection system, have the feature of detecting in which line the insulation fault occurred. Thanks to this feature, the time to detect the location of the insulation fault is reduced.
The following medical locations that carrying vital importance in hospitals and where medical devices are directly connected to patients are defined as group 2 room in accordance with IEC 60364-7-710 standard and isolated power systems are used in these rooms.