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Beijing Found Mechanical & Electrical Co.,LTD.
Add:Room 218,Xingdongnan Mansion,No.2 Weizikeng Street, Fengtai District, Beijing, 100079,China.
Phone:+86-10-67688056
Fax:+86-10-67669046
E-Mail:steve@insulation-all.com
          steve@insulations.com.cn
 
Phenolic cotton cloth laminated sheets Your location:home > Products

  Phenolic cotton cloth laminated sheet(insulation sheet,industry laminate sheet,phenolic cloth sheet) are made of cotton cloth impregnated phenolic resin by processing under heat and pressure. Phenolic cloth sheet Can be processed into all kinds of insulation parts, The products are widely used transformers, electric motors, cabinets, control boxes, electric switches, household appliances, railway, automobile, computer and medical appliance,etc.

  3025 sheet: High mechanical applications, suitable for using as insulation structural parts of machinery and electric equipments that require high electrical properties., available in transformer oil.
  3025B sheet, 3025C sheet are similar to 3025, but with lower properties.
  3026 sheet: High mechanical applications, suitable for mechanical equipment in operation, anti-seismic components. suitable for using as insulation structural parts of machinery and electric equipments that require high electrical properties.
  3027 sheet: High electrical applications, suitable for using as insulation structural parts of machinery and electric equipments that require high electrical properties. available in transformer oil.

  Nominal dimension: 1020×2040mm;1220×2440mm
  Thickness: 0.5 ~ 100mm

No.

Item

Units

Vlaue

3025

3025B

3025C

3026

3027

1

Applicable Standards

JB886-75

QB

JB1979-75

JB2182-77

2

Density

g/cm3

1.30~1.45

1.30~1.45

1.30~1.45

1.30~1.50

1.30~1.42

3

Martens heat resistance

125

125

125

125

135

4

Tensile strength

MPa

63.7

68.6

58.8

5

Flexural strength

MPa

102.9

90

70

117.6

88.2

6

Impact strength

kJ/m2

25

 

20

30

20

7

Bonding strength

N

5390

5000

5000

5390

8

Pressing strength ≥ 
 Perpendicular to lamination
 Parallel to lamination


MPa








245
147



9

Insulation resistance
 Under normal conditions
 After impregnated in water


Ω










1×1010
1×107

10

Voltage endurance parallel to lamination (in oil 90±2℃) 5 min

kV

10

11

Voltage endurance perpendicular to lamination ≥ (in oil 90±2℃)
 Thickness:0.5~1mm
 Thickness:1.1~2mm
 Thickness:2.1~3mm

 

kV/mm


4.0
3.0
2.0
2.0



2.5



2.5






8.0
6.0
5.0
5.0

12

Water absorption( Thickness 10mm)

%

1.0

13

Temperature index

120

120

120

120

120


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Phone:+86-10-67688056 Fax:+86-10-67669046 E-Mail:steve@insulation-all.com  steve@insulations.com.cn