China Electrical Insulation Epoxy Resin Fiber Glass Tube G10 G11 Fr4 Epoxy Fiberglass Tube, Find details about China G10 G11 Epoxy Fiber Glass Winding Tube, FRP Insulation Fiberglass Filament Winding Tubes from Electrical Insulation Epoxy Resin Fiber Glass Tube G10 G11 Fr4 Epoxy Fiberglass Tube
Category | Characteristics | Unit | Value |
Mechanical Properties | Tensile strength(ring) | MPa | ≥900 |
Tensile strength(axial) | MPa | ≥55 | |
Compressive strength(longitudinal) | Mpa | ≥150 | |
Perpendicular to the bending | MPa | ≥120 | |
Vertical bending modulus of elasticity | MPa | ≥1.6X104 | |
Shear strength | MPa | ≥700 | |
Electrical Properties | Axial impact withstand voltage | - | 7KW/mm, 5 times |
Radial frequency withstand voltage | - | 8KW/mm, 1 min | |
Medium wearing factor(50Hz) | - | 7.65X10-3 | |
Relative dielectric constant(50Hz) | - | 5.59 | |
Partial discharge(35KW) | pC | ≤5 | |
Water diffusion test | - | 12KW, 1min | |
Sheet resistivity | Ω | ≥9.5X1014 | |
Volume resistivity | Ω.m | ≥6.0X1012 |
Technical parameter: | ||||
Item | Uint | Value | ||
Density | g/m³ | ≥2.0 | ||
Compression Strength | Mpa | ≥200 | ||
Bending Strength | Mpa | ≥320 | ||
Volume resistivity | Noemal when | Ωm | 1.0 x 1011 | |
After soaking | 1.0 x 109 | |||
Parallel layer to the insulation resistance | Noemal when | Ω | 1.0 x 1011 | |
After soaking | 1.0 x 109 | |||
Surface breakdown voltage after wettingin normal air for 1 min with gap between electrodes of 30mm | KV | ≥15 | ||
Vertical layer to the breakdown voltage ( in transformer oil of 90±2ºC)δ≤3mm δ> 3mm | MV/m | ≥18 | ||
Parellel layer to the breakdown voltage ( in transformer oil of 90±2ºC) | KV | ≥50 | ||
Dielectric loss factor 50 Hz | Min | ≤0.02 | ||
Water absorbtion rate | % | less than 0.02 |
Item | Thermal Grade | ºC | Characteristic |
3641 | Grade B | 130ºC | Mechanical and electrical applications, good heat resistance. |
G-10 | Grade B | 130ºC | Mechanical and electrical applications, good heat resistance. |
G-11 | Grade F | 155ºC | Mechanical and electrical applications, good heat resistance. |
FR-4 | Grade B-F | 130-155ºC | Flame resistance, mechanical and electrical applications. |