ABB launches 420 kV high-voltage composite combined appliance
Recently, ABB Group launched 420 kV high-voltage composite combined electrical equipment, which combines circuit breakers, disconnect switches, grounding switches and current and voltage transformers and other functional modules in one, in an effort to maximize savings in product installation and commissioning time in the field. This is also one of the series of ABBPASS (plug-in switchgear system) high-voltage composite combined electrical equipment launched. Compared to open gas-insulated switchgear of the same voltage class, the compact design of this product reduces the footprint of the equipment by more than 50%. Field tests show that the high-voltage bushing can be rotated from the working position to the operating position.
Compared to open gas-insulated switchgear of the same voltage class, the compact design of this product reduces the footprint of the equipment by more than 50%. Field tests have shown that the high-voltage bushings can be rotated from the working position to the transport position in a reversible process, reducing the time required to perform this operation to 30 seconds per bushing.
According to Wei-di Lu, head of ABB's Global High Voltage Products business unit, since all the moving parts of the combined electrical equipment are gas-insulated, there is no need to regularly clean the switchgear's contact devices, and some of the remaining necessary operation and maintenance work can be carried out while the equipment is in operation, without any operational interruptions. This undoubtedly increases the reliability and availability of the equipment, while also reducing maintenance time and maintenance costs.
It is reported that the voltage level of the ABBPASS product family now covers 72.5 kV to 420 kV, and the short-circuit breaking current capacity covers the range of 31.5 kA to 63 kA.