What is a Melamine Glass Laminated Tube?
2025-03-26
Melamine Glass Laminated Tube
Melamine glass laminated tubes are manufactured by impregnating electrical-grade alkali-free glass cloth with melamine-formaldehyde resin, followed by drying and hot pressing. They exhibit excellent arc resistance and certain dielectric properties, making them suitable as arc-resistant materials in switchgear.
1. Definition and Application
2. Technical Requirements for Melamine Glass Laminated Tubes
2.1 Appearance of Melamine Glass Laminated Tubes
The surface of the melamine glass laminated tube should be flat, free from bubbles, pits, and wrinkles. A small amount of spotting is permissible. Edges should be cut neatly, and end faces should be free from delamination and cracks.
2.2 Main Performance Indicators for Melamine Glass Laminated Tubes
| 1 | Water Absorption | % | ≤2 |
| 2 | Volume Resistivity | Ω.m | ≥1.0 × 10<sup>13</sup> |
| 3 | Perpendicular Dielectric Strength | kV/mm | ≥15.0 (in normal transformer oil) |
| 4 | Arc Resistance | s | ≥180 |
Note: Customized specifications are available to meet alternative technical requirements.
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