EGSB ® 2709 T

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.

Tapes 20 mm wide
Other widths are available on request.


Minimum 6 months at 20 °C
Minimum 12 months at 5 °C

Processing Advice

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.


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Product Description

Properties Test Method Unit Value
Nominal thickness IEC 60394-2 mm 0.24 ± 0.04
Total substance IEC 60394-2 g/m² 360 ± 35
Tensile strength IEC 60394-2 N/cm ≥80
Elongation IEC 60394-2 % ≥10

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DISCLAIMER: The technical information contained herein is the result of extensive testing in the manufacturer’s laboratories. In addition any application advice given verbally, in writing or by testing corresponds to the best of our knowledge and belief. Since the use and application of any of our products lies beyond our area of control, it remains the responsibility of the user to verify the product’s suitability for their application.

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