Limiting short-circuit currents in medium-voltage applications
The power requirements for large industrial sites is increasing. Often there is also a requirement to reduce the installation volume of electrical equipment in off-shore facilities where every square meter is very expensive. One means of reducing the amount of electrical equipment is to use the generation voltage as the distribution voltage of the site. This often however, results in very high values of short-circuit current exceeding both the peak rating and breaking capacity of switchgear. Fast-acting current limiting devices can be installed in the electrical distribution system in order to reduce the short-circuit current to acceptable values.