1. Medical IT systems need to use the rated voltage of 450/750V four-core or five-core fire-retardant cables;
2. Medical IT systems installed in the isolation transformer on the power side and the load side of the circuit, overload protection is not permitted to be installed on the electrical appliances, there is no need to cut off the power supply to the important medical equipment due to the prevention of overloading, the use of fuses for short-circuit protection;
3. Medical IT systems need to install insulation monitors, phase line to ground insulation faults, insulation monitors can be used for Short-circuit protection;
3. Medical IT systems need to be installed in the insulation monitor, phase line to ground insulation failure, the insulation monitor immediately alarm, to remind the operator of the system has been the first fault, but the system can still be run with a fault, you need to find out at the appropriate time and troubleshooting;
4. Isolating transformers in the medical IT systems are installed in the operating room distribution box
5. AC internal impedance of at least 100kΩ;
6. Test voltage of not more than 25V DC;
7. Test current of not more than 1mA, even in the event of a fault;
8. At the latest, when the insulation resistance decreases to 50kΩ, an alarm signal shall be issued;
9. Alarm signal;
Special attention: medical IT system PE line is an extension of the hospital TN-S system PE line, the two systems *** with the same protective grounding device, not allowed to set up another independent grounding device, to avoid the potential difference between the two grounding devices, resulting in electric shock injury.