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This article mainly explains "what is tns system", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let Xiaobian take you to learn "what is tns system"!

TN-S system is a zero-connection protection system in which the neutral point of power transformer on power supply side is directly grounded, and the exposed conductive part of electrical equipment on load side is grounded through protective zero line. TN-S working zero line and protective zero line (grounding line) are separate, N line is working zero line, PE line is dedicated protective zero line (grounding line), that is, the equipment shell is connected to PE line.

Operating environment: Windows 7, Dell G3 PC.

TN-S system is a zero-connection protection system in which the neutral point of power transformer on power supply side is directly grounded, and the exposed conductive part of electrical equipment on load side is grounded through protective zero line. TN-S working zero line and protective zero line (grounding line) are separate, N line is working zero line, PE line is dedicated protective zero line (grounding line), that is, the equipment shell is connected to PE line.

There are five types of protective grounding system: TT, IT, TN-C, TN-S, TN-C-S. Different regions have different power supply systems, and the protective grounding of the equipment room will also change accordingly. The last three kinds of protective grounding are commonly used, and TN-S system shall be adopted in the machine room.

Additional information:

TN-S power supply system features:

When the system is operating normally, there is no current on the special protection line, but there is an unbalanced current on the working zero line. PE line has no voltage to ground, so the metal shell of electrical equipment is connected to zero protection is connected to the special protection line PE, safe and reliable.

2, the working zero line is only used as a single-phase lighting load circuit.

3, special protection line PE is not allowed to break, nor allowed to enter the leakage switch.

4, the use of leakage protection on the trunk line, the zero line must not have repeated grounding, and PE line has repeated grounding, but not through the leakage protector, so TN-S system power supply trunk line can also be installed leakage protector.

TN-S mode power supply system is safe and reliable, suitable for low voltage power supply systems such as industrial and civil buildings. "Three connections and one leveling" before construction works (electric connection, water connection, road connection and leveling-TN-S mode power supply system must be adopted).

At this point, I believe everyone has a deeper understanding of "what is tns system," may wish to actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

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