Industrial Electrical Engg Company

Established since 1921

Polyester Glass Mica Paper Tape

CONSTRUCTION : POLYESTER GLASS MICA PAPER TAPE ( F & H)
Tape shall be made one side 1.7 mills thickness glass cloth 0.012 mm thickness Polyester films, between 0.120 grs./sq.mtr. Uniform Mica Paper bonded with an insulation “F” class and “H” class varnish, which stand temperature 150°C and 180ºC respectively. The varnish shall be cured to tack free and there after slitting shall be done to get the Tapes to required widths.

POLYESTER GLASS MICA PAPER TAPE CLASS “F & H”
Tapes are characterized by high flexibility, high dielectric and a uniform thickness. Due to low compression on application of pressure, leave no voids or empty spaces between and among insulating layers.

SCOPE : This specification relates to the manufacture and supply of Class “F” and
Class “H” varnish bonded. Nominal thickness 0.13mm, suitable for generator field and armature coils requiring maximum resistance to high voltage temperature.

TECHNICAL PARTICULARS SPECIFIC REQUIREMENTS OF ‘F’ AND ‘H’ THERMAL CLASSES.

Sr

No.

Particulars

Unit

Specific Requirements

 

01

 

 

 

Thickness (average)

 

Maximum

 

Minimum

MM

 

MM

 

MM

 

0.15

 

0.17

 

0.12

 

02

Width

MM

Nominal + 1mmh

(Nominal width is specified by the buyer)

 

03

Length of Roll

Meter

 

25 and 30

 

04

Tolerance

Meter

+ 1

 

05

Mica Content (Minimum)

57 – 63 gsm.

 

06

 

Polyester

32 – 36

gsm.

 

07

 

Bond Content (Maximum)

43 – 47 gsm.

 

08

Glass Content

32 gsm

 

09

 

Tensile strength (MD)

 

Kg/ cm

12

 

10

 

Breakdown Voltage under ambient conditions, on New Tape

 

Kg

38.46 Kv /MM.

 


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