Dehn Guard with ACI technology
ACI (Advanced Circuit Interruption) technology presents a technical solution to dimensioning issues which eliminates the need to select the right back-up fuse or conductor cross-section. ACI fulfils the requirements of tomorrow today. Constant availability of electrical systems is a must, says Dehn. Power cuts and system failure are out of the question. Now and in the future, it is important to consider the ongoing transition in the global power supply. Renewable power generation is creating new grid parameters: Isolated grids and storage systems are changing the short-circuiting conditions. One aspect which the new ACI technology already has well under control.
The safety and availability of the electrical installation is increased, and valuable space saved. In addition, errors made when selecting or installing the back-up fuse or choosing the right conductor cross-section can be eliminated. The only cross-section which now needs to be considered for the connection cables of Dehn Guard ACI is 6mm². This saves the valuable time previously spent on dimensioning the cross-sections. 6mm² Cu also makes installation easier because the radiuses are smaller and the wiring shorter.
The technology in an ACI arrester eliminates the occurrence of leakage current. This prevents mature ageing of the protective device and saves the time and expense of replacing arresters ahead of schedule. The Dehn Guard ACI also prevents the accidental tripping of the insulation monitoring and contributes towards operational safety. Conventional solutions with fuses or circuit breakers are not ideal for protecting an SPD. Here, ACI is perfectly coordinated with the surge protection and supply reliability of the system. (nhp)
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