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- • TEL: +44 (0) 116 273 3633
Electricity transmission and distribution can in many ways be considered as the life blood of a country, the smooth distribution of electricity is essential to the smooth operation of industry, commerce and transportation.
Cressall have extensive experience supplying many different types of resistor used throughout the transmission and distribution network, they can be installed in many environments including off-shore, coastal and even tropical.
PROTECTION & CONTROL SYSTEM RESISTORS
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.
POWER QUALITY & TRANSMISSION SYSTEMS
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.
