Lightning surge generator lightning surge working grounding and protective grounding
Lightning surge working grounding and protective grounding
Lightning surge generator protective earthing: earthing of metal casing and other abnormal live parts of the equipment.
Lightning surge generator is grounded：In AC/DC power supply (or distribution panel), output the positive pole grounding of the 48V main wiring bank of DC.For the 24 system, it is dc 24V negative grounding.
The concept of "work grounding" is often difficult to understand correctly. The following clarifies several problems that are often easy to understand incorrectly:
a. The concept of working grounding is not intended for a 48-v positive (or 24-negative) power line connection to a dc electrical communication device
The connection of the 48V positive pole (and the 24 negative pole) of the dc electrical communication equipment to the power supply equipment should belong to the concept of power line connection, and should not belong to the category of grounding line connection.
b. Informal calling for “workplace”
In the lightning protection grounding standard in China, the working place is not a normative term, but in the long-term use of the specification, the concept of "working ground" was mistakenly changed into "working place" in some occasions, causing some confusion and unclear concepts.