Chipboard gray SS (Psp 3040 ) on rolls, sheet chipboard gray SS (Psp 3030 )

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Presspan is a product made from the cellulose of the purest, long-fiber woods. This is formed into a fiber fleece and then pressed. Due to its high chemical purity, pressed wood is used particular as an insulating material in electrical machines (resin-impregnated), capacitors (oil- or resin-impregnated) and especially in oil-filled transformers. The material properties allow classification in insulation class A (105°C) and are manufactured in accordance with the IEC standard. Depending on the thickness of the material, a distinction is made between sheet and roll pressboard.

 

Art.-Nr.

 

Technical data:

 

Temp Class:
A (105°C)

Material:
calendered pressboard with balanced fiber direction
100% sulfate pulp, color grey, DIN 7733

 

Test standard Sample pretreatment Unit Measured value * Standard value IEC 641-3
Thickness deviation IEC 641-2 Standard climate 23/50 % ± 10
Raw density IEC 641-2 Standard climate 23/50 g/cm3 1,25 1,15 – 1,25
Tensile strength unfolded min. lengthwise IEC 641-2 Standard climate 23/50 N/mm2 110 90
across 70 50
Elongation unfolded min. lengthwise IEC 641-2 Standard climate 23/50 % 6 5,5
across 12 5,5
Shrinkage max. lengthwise IEC 641-2 Standard climate 23/50 % 0,7 1,5
across 1,2 7
Thickness 5,5
Moisture content max. IEC 641-2 Standard climate 23/50 % 6 8
Ash content max. IEC 641-12 Standard climate 23/50 % 0,7 1
Conductivity of the aqueous extract IEC 641-2 Delivery mS/m 7 20
pH value of the aqueous extract IEC 641-2 Delivery 7 – 9 6-9
Electrical breakdown voltage unfolded min. IEC 641-2 Standard climate 23/50 kV/mm 12 11

 

* Average values, measured on 0.2 mm thick material

This information only provides general guidelines for use.

 

Dimensions:

Pressboard Psp 3030
0.1 – 5.0 mm thickness

Roll pressboard Psp 3040
0.1 – 1.0 mm thickness, tolerance ± 10%

Special thicknesses on request

 

Delivery formats:

Pressboard:
Psp3030 Sheets approx. 640 x 800 mm / approx. 800 x 1200 mm

Roll pressboard:
Psp 3040

Standard rolls:
640 mm or 1280 mm width

Narrow rolls:
From 4 mm width

Feathering:
possible

 

Item number:

Example: PSP3040/15/xxx.x
PSP3040 = pressboard Psp 3040
15 = thickness 0.15 mm
xxx.x = 022.5 = width 22.5 mm