As electrical equipment upgrades toward higher power and stability, GPO-3 (also known as UPGM-203) has emerged as a cornerstone insulation material. This unsaturated polyester glass fiber mat laminate is now a vital component in power systems, new energy, and rail transit.
What Makes GPO-3 Unique?
GPO-3 is manufactured from alkali-free glass fiber mat impregnated with unsaturated polyester resin and formed through high-temperature pressing. Its balanced performance offers several key advantages:
- Flame Retardancy: Meets the UL94 V-0 standard with low smoke and toxicity.
- Arc Resistance: Features a Comparative Tracking Index (CTI) of 600, ensuring safety under high-voltage stress.
- Mechanical Strength: Its robust structure resists delamination and pulverization, even in high-vibration environments like motors.
Key Application Scenarios
1. Circuit Breakers and Switchgear
GPO-3 acts as an "invisible shield" in electrical safety.
- Frame-type Circuit Breakers: Used for safety baffles, phase barriers, and spacer liners to prevent arc breakdown.
- Molded Case Circuit Breakers (MCCB): Its excellent arc-extinguishing characteristics make it ideal for partitions, improving the equipment's breaking capacity.
2. High-Efficiency Motors
In the motor industry, GPO-3 is processed into armature parts, slot wedges, and movable cover plates. Its heat resistance ensures stable operation in high-temperature environments, extending the service life of high-efficiency motors.
3. New Energy and Rail Transit
- Charging Piles: Maintains insulation integrity in high-humidity and salt spray environments.
- Rail Transit: Low-smoke and flame-retardant properties meet strict safety standards for vehicle circuit breakers.
Precision CNC Machining Services by RDS
At RDS, we don't just supply raw materials; we provide comprehensive solutions.
- Standard Sizes: 1010×2020mm and 1250×2500mm.
- Colors: Available in high-visibility Red and White.
- Custom Fabrication: Equipped with advanced CNC machining centers, milling, and engraving machines, we can process GPO-3 into complex special-shaped parts based on your specific drawings.
Looking for cost-effective, high-quality GPO-3 boards or custom parts?