HHO
HHO*-*
SIBA HHO series of special purpose fuses are current-limiting “Back-Up” and "General Purpose" class for protection use inside of oil filled transformers. These fuses provide space and cost savings in distribution transformer substations while also fulfilling all requirements regarding oil tightness during the manufacturing phase of the transformer and also during its service of operation. SIBA fuses are designed for decades of reliable usage and comply with the requirements for tightness for use under oil and for use in oil filled switchgear. Design and construction of these fuses follow well proven concepts of all SIBA high voltage fuses. For pressure resistant encapsulation a high grade ceramic is used. Contact materials consist of high conductivity copper with silver plating. The melting elements are of pure silver with appropriate optimization of notching to tight tolerances to ensure low deviations in the time-current curves and low let through currents yielding fuses that are "age resistant". The arc quenching material is quartz sand that is subjected to a particular specification regarding its composition, grain size and humidity level. Fuse units are also available with a striker. Medium voltage SIBA Fuses HHO according to British Standard are current-limiting “Back-Up” fuses for the protection of substations up to 24kV. The fuses in this section comply with the following national standards; The fuses are fitted with a striker and are very useful in Fuse/Switch combinations that comply with the requirements of IEC 62271 part 105. These fuses are available for the following rated voltage ranges; 7.2kV,12kV, 15.5kV and 24kV. Medium voltage SIBA fuses HHO are current-limiting fuses and are available in “Back-Up” or the 'intrinsically safe General Purpose" for the protection of substations. The fuses in this section comply with the following national standards; • The fuses incorporate M8 threaded holes located at the ends of the contact caps for easy installation inside the transformer. The "Back Up" fuses are available in voltage ranges of 12kV, 24kV and 36kV and the "General Purpose" fuse are available in voltage ranges of 12kV, 17.5kV and 24kV Medium voltage SIBA current-limiting "Back-UP" fuses are also available In DIN style rated for 24 kV and complies with the following standards: • • • IEC 60282-1 ESI 12-8 High Voltage Fuses to British and DIN Standards Application Range Types Fuses for protection of oil insulated transformer mains and oil insulated switchgear IEC 60282-1 BS 2692 -1
IEC 60282-1 DIN 43625 VDE 0670-4
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* Z - cylindiraal or D - DIN ï * B - backUp or G- General Purpose
portal: www.siballc.net e-mail: info@sibafuse.com
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