1. First-stage lightning protection of power supply

Install type 1+2 or type 1 surge protection devices on the low-voltage end of the power supply in the main power distribution room.

2. Second stage lightning protection of power supply

The secondary power lightning protection is mainly aimed at the protection of hospital medical equipment, and the secondary power lightning protection device is arranged in the main distribution box of each building.

3. Third-stage lighting protection of power supply

The third-stage protection of power supply is mainly aimed at the protection of traditional Chinese medicine equipment in hospitals, including the hospital's computer room, CT scanner and charging system. Install a single-phase power surge protector in the front section of the power distribution box in the computer room, in the front section of the power distribution box where the CT scanner of the radiology department is located.

4. The power supply system of hospital precision instruments should be designed and installed with compatible power supply and signal SPD protection.

5.  When the fire-fighting electronic equipment adopts AC power supply, SPD protection should be set in the AC power system.

6.  When the signal control line, communication line, power line and alarm signal line of each monitoring monitor of the security monitoring system pass through different lightning protection zones, an appropriate SPD shall be installed at the lightning protection zone interface.

7.  The input and output ports of various hubs in the computer network system shall be respectively equipped with data line SPD.

8.  Program-controlled exchange distribution frames on each floor, and the main program-controlled exchange distribution frames are equipped with surge protection devices for communication lines.