Specifications

4-6
Site Preparation Guide
Figure 15. Raised floor equipotentiality method
Neutral Power System
A TN-S neutral point connection system is mandatory for the servers.
Constructing a TN-S Neutral Point Connection System
The servers are equipped with a high-leakage current switch-mode power supply.
The protective conductor (PE) is connected to the neutral conductor at the origin of the
installation. As the Neutral and the PE wire are connected to the same output point of the
source, the voltage measured between "Neutral" and "Ground" at any point in the
installation must approach 0 Volt.
At the secondary winding of the power supply interface, the Neutral point is directly
connected to the grounding shaft measurement strip, or to the nearest outlet. This connection
is called the "Neutral reference wire".
DANGER
When defining a neutral point connection, the output Neutral point of a power source or
power supply interface must always be directly connected (referenced) to the nearest
grounding shaft strip and never to a grounding point.