Grounding connection box for medium and high voltage (up to 500kV)

500kV and below medium and high voltage grounding junction box: key guarantee for power safety grounding
In medium and high voltage power systems of 500kV and below, the grounding junction box plays a crucial role as a key component in ensuring reliable grounding of power equipment and ensuring safe and stable operation of the system. It can effectively guide the fault current to flow into the ground, avoid the risk of electric shock to personnel, and reduce the damage to equipment caused by overvoltage.
Core functions and application scenarios
core functionality
Safe grounding: During equipment maintenance and repair, provide reliable grounding connections for power equipment (such as transformers, cables, etc.), safely guide the remaining charges on the equipment to the ground, and prevent maintenance personnel from getting electrocuted.
Fault current diversion: When insulation faults occur in the power system, such as cable insulation layer damage, internal short circuits of equipment, etc., the grounding junction box can provide a low impedance grounding path, quickly divert the fault current, enable the protection device to quickly operate, cut off the fault power supply, and reduce the impact range and damage degree of the fault on the system.
Potential balancing: Balancing the potential difference between different devices in the power system to avoid electrical accidents caused by potential differences, especially in complex electrical environments such as high-voltage substations, which can effectively reduce electromagnetic interference between devices.
Application scenarios
Substation: used for grounding connections of transformers, switchgear, etc., to ensure the safe operation of substation equipment and the personal safety of workers.
Transmission line: Reliable grounding of the transmission line is achieved at the tower, cable terminal, and other locations to prevent damage to the line caused by overvoltage such as lightning strikes.
Industrial power system: The medium and high voltage distribution system in places such as factories and mines ensures the grounding safety of industrial equipment and reduces the impact of electrical faults on production.

We have an extensive technical engineering background in the development and production of grounding boxes for medium and high voltage underground insulated cable systems. In addition to standard enclosures, we can offer enclosures to suit customer requirements.