EGSB ® 2709 T consists of polyester-fabric, impregnated with a silicon carbide resin mixture in B-stage. EGSB ® 2709 T is a flexible semi cured tape with a defined resistance characteristic, depending on the voltage due to the silicon carbide. The improved adhesive properties guarantee a complete sealing between the layers of EGSB ® 2709 T. EGSB ® 2709 T has got a slightly tackier surface then conventional EGSB ® 2709 T. The final properties are achieved when the tape has been cured and the layers bond together.
EGSB ® 2709 T is used for insulating systems in VPI technology as voltage stress grading at the overhang part of coils and bars of high voltage machines. The performance of EGSB ® 2709 T is highly increased by using ISOSEAL ® MF 0611 (MF ME 2400) for VPI system. Sealing with SIOSEAL ® MF 611 (MF ME 2411) is recommended.
Format
Tapes
20 mm wideOther widths are available on request.
Minimum 6 months at 20 °C
Minimum 12 months at 5 °C
Optimum curing Conditions: 2 hours at 160 °C
Good contact to the outer corona protection tapes (CONTAFEL®) has to be ensured by an overlap of at least 10 mm. Length of EGSB ® covering in cm: =Test voltage (kV) divided by 2 – 3 (+ overlapped length with corona protective covering)
½-lapped taping is recommended.
Wilec is Africa’s largest manufacturer and supplier of input materials and technical solutions to the electric rotating machine, transformer and general industries.
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