Central Gasket in Neoprene Faced Phenolic

Neoprene faced phenolic resin sheet. Rubber thickness of 0.4mm on each face of phenolic sheet

thickness 2.4mm, to NEMA L1-1-1983, Type XPC, with the following properties.

Dielectric Strength in oil @ 23°C

500 Volt/mil

(20,000 Volts/mm)

Water absorption after 24 hours immersion in water @ 23°C

0.60%

Compressive strength @ 23°C

168 N/mm²

Maximum continuous operating temperature

100°C

Insulation resistance

1.2 x 10 Megohms

Phenolic Washers

Bakelaque Cotton Fabric Reinforced Laminate Grade B12 Phenolic Resin

Flexural Strength

120 Mpa

Impact Strength (Notched Charpy)

10.0 kJm²

Tensile Strength

80 Mpa

Electric Strength perpendicular to laminations in oil @ 90°C (Rapidly applied)

3 MV/m

Electric Strength perpendicular to laminations in oil @ 90°C (Step by Step)

2 MV/m

Breakdown Voltage parallel to laminations in oil @ 90°C

12 kV

Insulation resistance after 24 hours water immersion

2 GΩ

Comparative Tracking Index

110 V

Thermal classifaction continuous**

115°C

Thermal classifaction intermittent

125° C

Water Absorption after 24 hours immersion

85 mg

Density

1.35 g/cm³

Specific Volume

741 cm³/kg

Colour

Brown

** Figures given are for guidance only and assume use of material in air

Mylar Sleeves

Dielectric Strength - ASTM D149

4000 Volts/mil

Compressive Strength - ASTM D695

N/A

Water Absorption - ASTM D229

0.80%

Operating Temp °F

-75 to +300

Operating Temp °C

-59 to +149

Flexural Strength - ASTM D790

13000 psi

Cut Through Resistance

3500 ft-lbs

Phenolic Sleeves

Axial electric strngth in oil @ 90°C

30 kV

Water Absorption

3.5 mg/cm²

Cohesion between Layers

70 Mpa

Insulation resistance after immersion in water

50 Mohms

Axial Compressive Strength

100 Mpa

Electric strength normal to axis in oil @ 90°C (1.6mm wall)

7.8 MV/m

Relative Density

1.20

Thermal Classification

E

Steel Washers

Zinc Plated BS4320 (43A)