SBC Transformer Bushings
Cedaspe introducing a new family of bushings for Power Transformer with rated voltage up to 52 kV and current rating up to 3150 A with a composite silicon insulation body.
The insulation body is made by a fiberglass tube with an aluminum flange; the silicon insulator is moulded directly on the fiberglass tube with a modern injection system based on the liquid silicon technology (LSR).
The silicon used is a first quality material, Powersil XLR-630 by Wacker, with excellent properties.
The result are that our SBC bushings family have a very strong construction and a very efficient design which make also possible the replacement on site of the old porcelain bodies with these new composite insulators.
The design of our SBC bushings keeps the same overall dimension of the corresponding porcelain type bushing either acc to DIN 42533 & 4 or to EN 50180; very long creepage distances and alternated shed profile guarantee an excellent insulation.
Test conducted on these bushings show very good results with values of p.f. withstand voltage and impulse voltage much higher than the minimum values required by IEC 60137.
Regarding Partial Discharge, these bushings can be considered PD free, as the performance is extremely good with test results below 2 pC and all bushings tested remained free of PD by 10% above the rated voltage.
This means 1.9 times above line to ground Ur/srt3: at all a very good result !!
Download the full SBC catalogue: sbc-full-catalogue
