Electrical insulation system for stator windings that prevents current leakage and ensures operational safety in electric motors and generators.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Thermal Class | F (155°C) or H (180°C) | |
| Temperature Index | ≥155°C | |
| Dielectric Strength | ≥15 kV/mm | |
| Thickness Tolerance | ±10% | |
| Insulation Resistance | ≥1000 MΩ at 500V DC | |
| Partial Discharge Inception Voltage | ≥1.5 x operating voltage |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
The stationary component of an electric motor that generates a rotating magnetic field when energized.
Electrical component that steps up input voltage to high voltage levels required for dielectric strength testing
A specialized electromagnetic component that generates controlled magnetic fields for stirring molten metal in continuous casting molds.
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The insulation system prevents electrical short circuits between windings and to ground, reduces energy losses, and ensures safe operation by maintaining dielectric integrity under operating conditions.
Thermal class (e.g., Class F, H) is determined by standardized thermal endurance tests (IEC 60034-18) that measure the insulation's ability to withstand specific temperature ranges over its service life.
Common failures include thermal degradation, partial discharge erosion, mechanical damage from vibration, contamination, and moisture absorption leading to reduced dielectric strength.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.