Oil-tight MV fuse CEF-OT with TPC bushings ABB Medium Voltage Products, Fuses, Tomasz Komalski, 2011 Oil-tight MV fuse CEF-OT with TPC bushings © ABB Group November 18, 2018 | Slide 1

Oil-tight MV fuse CEF-OT Main features Special design for installation inside transformer under oil, Construction compatible with ABB TPC transformer, Various tags for easy assembly in different solutions inside TPC or as free mounted inside transformer tank, Design including: Welded current path, Heavy striker (130N), Oil and water proof, Double sealing system, Fuse-link dimensions acc. to IEC 60282-1 Type II, Fuse-link is dedicated to work under oil in high temperatures (80 ÷ 105 ºC) without ageing, Possibility of working with associated switch or signaling device under oil. © ABB Group November 18, 2018 | Slide 2

Oil-tight MV fuse CEF-OT Electrical features& operating conditions Fuse-link type Rated voltage Rated current Maximum tested breaking capacity Minimum breaking current Rates power losses in air (W) CEF-OT 12/24kV 20A 31,5kA at 12kV 16kV at 24kV 80A 70 31,5A 105 Ambient operating conditions CEF-OT fuse-links can be operated under the following conditions: Immersed in transformer oil, at temperatures from -40°C to +80°C, In outdoor and indoor installations, at temperatures from -40°C to +40°C, Inside a TPC bushing. © ABB Group November 18, 2018 | Slide 3

Oil-tight MV fuse CEF-OT Dimensions © ABB Group November 18, 2018 | Slide 4

Oil-tight MV fuse CEF-OT Striker pin characteristics © ABB Group November 18, 2018 | Slide 5

Oil-tight MV fuse CEF-OT TPC bushings data Application Indoor and outdoor distribution transformers type TPC Equipped with current-limiting fuse-link 5A-31.5A Standards IEC 60137 – Insulated bushings for alternating voltages above 1 000 V IEC 815 – Selection and dimensioning of high-voltage insulators (outdoor type) intended for use in polluted conditions – II class IEC 60282 – High voltage fuses HN-52-S-24 – EDF Standard for mechanical strength Ratings f – 50 Hz, Um – 24 kV, PD level according to IEC 60137 (1.5Um/3 - 10 pC, 1.05Um/3 - 5 pC) © ABB Group November 18, 2018 | Slide 6

Oil-tight MV fuse CEF-OT TPC bushings data © ABB Group November 18, 2018 | Slide 7

© ABB Group November 18, 2018 | Slide 8