Neutral Earthing Resistors (NERs) used to limit the current that would flow through the neutral point of a transformer or generator in the event of an earth fault.
Pre-insertion resistors (PIRs) used to control transient magnetising currents produced when transformers are energised so limiting the associated voltage fluctuation.
Static VAr compensators (SVC) – used on transmission systems to regulate voltage, power factor and harmonics.
Mechanically switched capacitor damping network resistors (MSCDN) – designed to remove harmful frequencies from the transmission network .
High Voltage DC Transmission (HVDC) – used to efficiently transmit electrical power over very long distances. Pre-insertion and Discharge resistors (HVDC) are used to quickly absorb transient magnetising currents and stored energy in high voltage cables in the event an emergency shutdown is required.