- Description
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Description
Epoxy glass cloth rod: 3840/3841/3841F(FR4)/3842/EPGC308 rod etc;
Phenolic cotton cloth rod: 3721/3721-1/3722(C)/3723(CE)/3724(L)/3725(LE)
Characteristics & application:
High mechanical strength, good electrical performance, and mechanical electrical purpose.
Properties |
Units |
Grade |
||||||||
Phenolic cotton-cloth rod |
Epoxyglass fabric rod |
|||||||||
3721 |
3721-1 |
3722 |
3723 |
3724 |
3725 |
3840 |
3841 |
3841F |
||
Density ≥ |
— |
1.25 |
1.25 |
1.28 |
1.26 |
1.28 |
1.26 |
1.75 |
1.70 |
1.75 |
Water absorption ≤ |
% |
1.0 |
1.0 |
2.0 Φ13mm |
1.3 |
1.5 |
1.1 |
— |
0.5 |
0.5 |
Flexural strength ≥ |
MPa |
117.6 |
88.0 |
110.3 |
89.6 |
110.3 |
82.7 |
343.0 |
241.3 |
241.3 |
Tensile strength ≥ |
MPa |
78.4 |
— |
— |
— |
— |
— |
196.0 |
— |
— |
Compressive strength ≥ |
MPa |
— |
— |
131.0 |
137.9 |
131.0 |
137.9 |
— |
241.3 |
241.3 |
Insulation resistance parallel to the lamination |
Ω |
1.0×108 |
1.0×108 — |
— |
— |
— |
— |
1.0×10101.0×107 |
— |
— |
Breakdown voltage parallel to laminations in transformer oil ≥ |
KV |
20±5℃ |
20±5℃ |
— |
20±5℃10.0 |
— |
20±5℃10.0 |
90±2℃ |
90±2℃15.0 |
90±2℃15.0 |
Flammability |
— |
— |
— |
— |
— |
— |
— |
— |
— |
FV0 |
Colour |
— |
Natural |
Natural |
Natural |
Natural |
natural or black |
Natural |
Natural |
Natural |
Natural |
Characteristics & Applications |
— |
For mechanical & electrical application. |
For mechanical application, |
Similar to NEMA’s c grade |
Similar to NEMA’s CE grade. |
Similar to NEMA’s L grade. |
Similar to NEMA’s LE grade. |
Good humidity resistance. |
Similar to NEMA’s G-10 grade. |
Similar to 3841,with good flame retardent. |