In low- and medium-voltage electrical equipment and industrial power systems, the performance of insulation materials directly determines the safety, operational reliability, and service life of the equipment. GPO-3 laminate is a high-performance glass fiber reinforced polyester insulation material with excellent mechanical strength, stable electrical properties, and good flame retardant characteristics. It has been widely used in the field of electrical insulation. This article systematically analyzes the three core application scenarios of GPO-3 laminate in the field of electrical insulation, helping engineers and purchasing personnel to understand its application value.
GPO-3 laminate plays a fundamental insulation role in the field of rotating motors, mainly used in the manufacture of the following components:
Slot wedges and slot liners
Phase-to-phase insulation
End insulation supports
♦ High heat resistance: GPO-3 laminate typically reaches Class F (155℃) and above, and adapts to the high-temperature environment of motor operation.
♦ Excellent dielectric strength: Typical value ≥35kV/mm, ensuring electrical isolation effect.
♦ Good machinability: It enables precise cutting and drilling, meeting the processing needs of various complex shapes.
♦ Strong resistance to vibration fatigue: It maintains structural integrity under continuous motor vibration.
In low-voltage switchgear, distribution boxes, and complete switchgear, GPO-3 laminate is often processed into the following components:
Insulating partitions
Phase-to-phase isolation panels
Mounting supports
♦ High Fire Safety: GPO-3 laminate meets UL 94 V-0 flame retardant standards, reducing the risk of equipment fires.
♦ Good Arc Resistance: GPO-3 laminate can withstand the effects of arcs generated during the operation of the power distribution system.
♦ Strong Dimensional Stability: It maintains structural shape stability under varying temperature and humidity conditions.
♦ Good Corrosion Resistance: The laminate resists chemical corrosion in industrial environments.
In dry-type transformers and some oil-immersed transformers, GPO-3 laminated sheets are mainly used to manufacture the following components:
End insulation supports
Winding clamping structures
Insulation isolation pads
♦ Low dielectric constant and loss factor: Reduces equipment energy loss and improves transformer operating efficiency
♦ Good oil resistance: Resists chemical corrosion from transformer oil, maintaining performance over a long period
♦ High mechanical strength: Withstands electromagnetic forces from windings and mechanical stresses during installation
♦ Good thermal cycling resistance: Adapts to temperature fluctuations caused by changes in transformer load
The comprehensive performance of GPO-3 laminate makes it a preferred material for electrical insulation applications. Specific characteristics are as follows:
Electrical Properties: High dielectric strength, low loss factor, excellent arc resistance
Mechanical Properties: High specific strength, good dimensional stability, easy to process
Thermal Properties: High heat resistance rating, low coefficient of thermal expansion, some thermal conductivity
Safety Properties: High flame retardant rating, low smoke toxicity, resistance to tracking
Environmental Adaptability: Chemical corrosion resistance, moisture and mildew resistance
GPO-3 laminate meets multiple international standards and certification requirements:
Electrical Standards: IEC 60893, NEMA LI 1-1998
Safety Certifications: UL certification (E331595), RoHS compliance
Testing Specifications: ASTM D709, ISO 1642
GPO-3 Laminates, with their excellent electrical insulation properties, mechanical strength, and flame-retardant characteristics, play a crucial role in low-voltage power distribution, transformers, busbar systems, and new energy electrical equipment. For electrical engineering projects that prioritize equipment safety, reliability, and long-term stable operation, GPO-3 laminates are a technologically mature and cost-effective insulation material choice.
Through proper selection and standardized application, GPO-3 laminates can effectively improve the overall performance of electrical equipment and ensure the safe operation of modern power systems.
If you need our products please write down any questions, we will reply as soon as possible.
There are three ISO certificates for quality certification. The certificates will be shown later. ISO
After receiving the advance payment, the production cycle is 15-25 days. And the transportation cycle should be calcul……
We supply with installation guide and user manual for each transformer. If you do not understand them. We will offer v……
