SIGMACOM 2.6  

|     SIGMACOM 3.1     |

LAMINATED SIGMACOM 3.1

 
Transformer Insulating Pressboard
Transformer Insulating Precompressed Pressboard
Moulded Components
Corrugated Component
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Insulation Press Paper
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    TRANSFORMER INSULATING PRECOMPRESSED PRESSBOARD
 
                                           SPECIFICATIONS
   

Colour: Light Brown
Finish:
Matte with mesh mark on both sides.

                      PROPERTIES

TYPICAL VALUES

SIGMACOM 2.6     

APPARENT DENSITY, Range (gm/cc)
< 1.6 mm 
> 1.6 - 3.0 mm 
      


0.95 - 1.15
1.00 - 1.20 

TENSILE STRENGTH, min (MPa)
MD / CD 

< 1.6 mm 
> 1.6 - 3.0 mm 



90 / 50
95 / 55

COMPRESSIBILITY in AIR, max (%)
< 1.6 mm 
> 1.6 - 3.0 mm 


11.0
09.0

REV. COMPRESSIBILITY, max (%)
< 1.6 mm 
> 1.6 - 3.0 mm 


40
45

ELONGATION, min (%)
MD
CD

2.0
3.0

SHRINKAGE in AIR, max (%)
MD
CD
PD


0.6
0.9
5.0

MOISTURE CONTENT, max (%)

6.0

ASH CONTENT, max (%)

1.0

CONDUCTIVITY OF AQUEOUS EXTRACT, Max (mS/m)
< 1.6 mm 
> 1.6 - 3.0 mm 



9.0
10.0

pH of AQUEOUS EXTRACT, Range

6.0 - 9.0

OIL ABSORPTION, min (%)
< 1.6 mm 
> 1.6 - 3.0 mm 


9.0
7.0
ELECTRICAL STRENGTH, min (kV/mm)
in Air / Oil
< 1.6 mm
> 1.6 - 3.0 mm


10 / 35
9 / 30