GR2 0.315 Corona Resistant Enameled Copper Wire likely refers to a specific type of enameled wire that has enhanced resistance to electrical corona discharge—particularly useful in high-voltage or inverter motor applications.
What is GR2 0.315 Corona Resistant Enameled Copper Wire?
GR2: This typically stands for Grade 2 insulation. Grade 2 provides a thicker enamel layer compared to Grade 1, offering better dielectric strength and mechanical protection.
0.315: This most likely refers to the diameter of the wire in millimeters (0.315 mm), which is approximately 28 AWG (American Wire Gauge).
Corona Resistant: This indicates that the wire is coated with a special enamel that can withstand partial discharge (corona discharge), a phenomenon common in high-voltage environments that can degrade insulation over time.
Enameled Copper Wire: A copper conductor coated with a thin layer of insulation (enamel). It’s widely used in transformers, motors, inductors, and other electrical applications.
Specifications
| Property | Description |
|---|---|
| Conductor | Pure copper (≥ 99.95%) |
| Insulation Type | Polyimide, Polyamide-imide, or similar |
| Temperature Class | Typically 200°C or 220°C |
| Corona Resistance | Excellent (suitable for ≥1000V inverter drives) |
| Application | EV motors, HV transformers, aerospace, etc. |
Key Properties:
- High dielectric strength
- Thermal class likely around 200°C (H class) depending on the exact enamel type
- Resistance to corona discharge and electrical stress
- Excellent mechanical properties and adhesion
