Sealing HV Cables | A Battery Energy Storage Systems (BESS) Case Study
Published 24 Oct 2023
Battery Energy Storage System
CSD’s Technical Services were contracted to carry out water and gastight sealing of cable entry points across the site including the BESS, LVAC and NGET units. The NOFIRNO Duct Seal system, manufactured by CSD Sealing Systems and distributed by Thorne and Derrick, was the favoured solution for sealing HV cables.
The NOFIRNO Duct Seal System was used to provide a water and gastight seal to certified levels of 2.5 bar.
Battery Energy SystemsÂ
A site suffered from significant water ingress and required external excavation to some of the buildings to ensure the required watertight seal would be obtained. CSD’S Aquastop system was also used on several internal seals.
Sealing Cables Using NOFIRNO For BESS Projects
All entry points were successfully sealed across the site using CSD’s NOFIRNO Duct Seal System. All buildings are now water and gastight helping to prevent water ingress and reduce the risk of equipment damage.
nofirno Duct Seal
The NOFIRNO Duct Seal system comprises of two components; 60mm rubber NOFIRNO multi-sleeves which provide cable support, ensure cable separation, and provide a backing for the second component, which is a 20mm layer of NOFIRNO Sealant.
To ensure the NOFIRNO Sealant adheres correctly, the areas where the sealant is to be applied, should be clean and dry before application i.e., the cables and any frames/structures.
The NOFIRNO multi-sleeves are then installed which provides cable separation and a firm backing for the NOFIRNO Sealant layer.
Outcome of using a NOFIRNO Duct Seal
All entry points were successfully sealed across the site using CSD’s NOFIRNO duct seal systems.
All buildings are now water and gastight helping to prevent water ingress and reduce the risk of equipment damage.
Key Benefits Of Duct Seals
• Tested to prove no deterioration in performance for more than 50 years
• Provides flood protection and prevents water and gas ingress – pressure rated up to 2.5 from the front and back of the seal
• Quick and easy to install
• Easy re-entry for adding, removing or replacing cables
NOFIRNO Duct Seal | Cable Sealing Solutions from CSD
 Further ReadingÂ
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THORNE & DERRICK are national distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable jointing, copper earth tapes and substation earthing at LV, 11kV, 33kV and EHV.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
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