Conductive tape is used for high voltage bus slot corona protection in electrical machines. It can be used for both resin-rich (RR) and vacuum pressure impregnation (VPI) technologies.
Semiconductor tapes are used for corona protection of bars

Technical specifications for LPP-2000 and LPP-2500 polyester semiconductor tape

These technical specification apply to polyester semiconductor tape of the LPP-2000 and LPP-2500 grades (hereinafter referred to as the tape), designed to protect against corona the winding heads of high-voltage electric machines, wind turbines, hydro generators, with insulation systems of class F and H, manufactured using vacuum impregnation technology or Resin Rich technology.

An example of record for identification of a semiconductor polyester tape of the LPP-2000 grade, with a roll width of 20 mm, wound on a sleeve with an inner diameter of 55 mm on request in other documents: <Tape LPP-2000 x 20 ⌀55 TY 1915-060-50157126-2006 TT-571>.

An example of record for identification of a semiconductor polyester tape of the LPP-2500 grade, with a roll width of 25 mm, wound on a sleeve with oll diameter of 55 mm and tape width of 20 or 25 mm.

It is intended for external conductive slot corona protection of grooved parts of windings of high-voltage electric machines, turbo generators and hydrogen generators with insulation systems of heat resistance class F. It is supplied on rollers with a maximum diameter of 120 mm. The sleeve diameter is 55 mm, width is 25 mm.