Characteristics and applicationTemperature classification is F. Excellent electrical and mechanical properties, especially voltage resistance and retaining rate of mechanical strength at high temperature. Used as slot, wedge and insulating structural parts for Class F electrical machine, pulling motors and transmission and distribution equipment.
StandardQ/XB3132-2007, Equivalent to NEMAG-11 and IECEPGC203
Table 2Technical requirements
No. | Properties | Unit | Normal Value | |||
1 | Flexural strength perpendicular to layer | At room temperature | MPa | ≥360 (lengthwise) ≥34 (crosswise) | ||
150±2 | ≥190 (lengthwise) | |||||
2 | Compressive strength, perpendicular to layer | MPa | ≥350 | |||
3 | Impact strength parallel to layer (Charpy method) | kJ/m2 | ≥37 (lengthwise) | |||
≥37 (crosswise) | ||||||
4 | Dielectric constant | Under 48Hz∼62Hz | - | |||
under1Hz | ≤5.5 | |||||
5 | Dissipation factor | Under 48Hz∼62 Hz | - | |||
Under 1MHz. | ≤0.04 | |||||
6 | Insulation resistance after immersing in water. | W | ≥200 | |||
7 | Density | g/cm3 | 1.7∼2.0 | |||
8 | Water absorption | % | Refer to table 3 | |||
9 | Voltage resistance parallel to layer(at 90±2 oil for 1min | kV | ≥45 | |||
10 | Insulation resistance parallel to the layer . | At room temperature | MW | ≥1.0×106 | ||
Immersing in water for 24h | ≥5.0×104 | |||||
Table 3Water absorption
Mean thickness mm | Normal Value mg |
| Mean thickness mm | Normal Value mg |
|
0.4 | ≤16 | 5 | ≤24 | ||
0.5 | ≤16 | 6 | ≤26 | ||
0.6 | ≤16 | 8 | ≤30 | ||
0.8 | ≤17 | 10 | ≤33 | ||
1.0 | ≤17 | 12 | ≤37 | ||
1.2 | ≤17 | 14 | ≤40 | ||
1.6 | ≤18 | 16 | ≤44 | ||
2.0 | ≤19 | 20 | ≤51 | ||
2.5 | ≤20 | 25 | ≤60 | ||
3 | ≤21 | Processed by one side to 22.5 | ≤72 | ||
4 | ≤22 |
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epoxy Glass Fabric Laminated sheet