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Cotton Cloth Molded Rod 3721 3721-1 3725
Mechanical and electrical applications; 3721 is better than 3721-1 in mechanical strength; 3721-1 is an economical product versus 3721.
Description
Mechanical and electrical applications; 3721 is better than 3721-1 in mechanical strength; 3721-1 is an economical product versus 3721.
|
Properties
|
Unit
|
Grade
|
|
Phenolic Cotton Cloth Molded Rod
|
|
3721
|
3721-1
|
3725
|
|
Flexural strength
|
≥
|
MPa
|
118
|
88
|
83
|
|
Tensile strength
|
≥
|
MPa
|
78
|
—
|
—
|
|
Compressive strength
(Axial)
|
≥
|
MPa
|
—
|
—
|
138
|
|
Breakdown voltage
Parallel to laminations
(in transformer oil)
|
≥
|
kV
|
10
(20±5℃)
|
—
|
10
(20±5℃)
|
|
Insulation resistance
parallel to lamination
A: Under normal
conditions
D-24/23：Immersion
in water
|
≥
|
?
|
1.0×108
—
|
— —
|
— —
|
|
Density
|
|
g/cm3
|
(1.25-1.40)
|
|
Water absorption rate
(D-24/23, Φ25㎜)
|
≤
|
%
|
1.0
|
1.0
|
1.0
|
|
Flammability
|
|
Class
|
—
|
—
|
—
|
|
Color
|
|
—
|
Natural
|
|
Reference standard
|
|
—
|
Q/TXXFR004-2009
|
Beijing New Friend insulation Material Co.，LTD
Year Established:2000
Business Type:Manufacturer, Trading Company
Management Certifiation: ISO 9001:2000 ISO 14001:2004 OHSAS 18001
Operational Address: No. 7, Xingguang 5th Street, Optical Mechanical And Electronic Integration Industrial Base, Tongzhou Area, Science And Technology Park, Zhongguancun, Tongzhou Dist., Beijing, China (Mainland)
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