Copper Earthing Tapes for Auxiliary Transformer & Neutral Earthing Resistor (NER)
Published 04 May 2021
Images courtesy of: Harvey Ross – Mechanical Fitter at IDEC Technical Services
Pictured: Copper Earthing Tapes for Auxiliary Transformer & Neutral Earthing Resistor (NER). The rebar in the concrete has been connected outside of the bund wall and the transformer and NER are connected straight to the earth mat.
After these images were taken Harvey installed security pins every 300mm to prevent theft. He also states that the end client had not requested Guardian capping to be installed at this site however all connections were tinned with Frylux and then greased.
It is worth noting that cable duct sealing is often something which gets missed or overlooked on this kind of project. Builders foam is often incorrectly used to fill the ducts when it is non-compliant, breaks down under rain water, attracts vermin and can be extremely difficult to remove without causing damage to the cables themselves. A better option would be to use a DSEAR compliant, leak resistant, age tested and easy to maintain cable duct sealing system such as Nofirno from CSD Sealing Systems.
THORNE & DERRICK are national distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Earthing & Electrical Equipment – we service UK and global businesses involved in cable installations, substation, overhead line and the installation of medium/high voltage cable joints and terminations at LV, 11kV, 33kV and HV.
Contact us for 3M Electrical, ABB, Alroc, AN Wallis, CATU Electrical, Cembre, Centriforce, CMP, CSD, Elastimold, Ellis Patents, Emtelle, Euromold, Filoform , Furse, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.
