Latest company case about Shenzhen Hanast New Material co.,LTD Certifications

A manufacturer of photovoltaic (PV) inverters switched to a low-density, two-component epoxy potting compound to protect outdoor power-conversion electronics. The change reduced total equipment weight while sealing the core circuit board against moisture, dust, and vibration, ensuring reliable operation in high-humidity, dusty outdoor environments.

PV inverters, DC/AC conversion units, and power adapters are installed in rooftop, ground-mount, and utility-scale solar projects. These units run continuously and are exposed to rain, condensation, airborne dust, salt fog, and mechanical vibration. As installations move toward lighter, wall-mounted, and elevated designs, reducing the weight of every internal assembly has become a priority for installers and integrators.

• Protect sensitive power-conversion circuits from outdoor humidity and condensation
• Block fine dust that can cause leakage currents and short circuits
• Damp vibration that loosens solder joints and connectors
• Reduce overall device weight to ease handling and installation
• Maintain electrical insulation, thermal stability, and RoHS compliance

The customer selected a low-density, two-component epoxy potting compound engineered for outdoor power electronics. Compared with conventional potting resins, the low-density formulation substantially reduces the mass added to each enclosure, directly lowering the shipped and installed weight of the inverter. Because the material is low in viscosity, it flows into narrow gaps around the PCB and components, filling voids without trapping air. After curing it forms a hard, bubble-free, glossy protective body with excellent dielectric insulation, moisture proofing, and humid-heat ageing resistance.

1. Pre-mix and weigh the two components at the recommended ratio.
2. Mix thoroughly with a flat-bladed tool, scraping container walls.
3. Optional vacuum degassing removes entrapped air for void-sensitive boards.
4. Pour into the clean, dry inverter housing within the pot life.
5. Cure at room temperature or with heat acceleration, then inspect.

• Measurable reduction in total inverter weight thanks to the low-density fill.
• Moisture and dust ingress effectively blocked across rainy and dusty field sites.
• No leakage currents or short circuits reported in long-term operation.
• Vibration-related connector failures eliminated during transport and service.

Q: Why use low-density epoxy instead of standard potting resin for inverters?
A: Low-density epoxy adds less weight while still fully sealing the electronics, which matters for wall-mounted and elevated solar installations.

Q: Does low-density potting still insulate and protect?
A: Yes. The cured compound delivers high dielectric strength, moisture proofing, and dust-blocking performance, protecting core circuits outdoors.

Low-density epoxy potting gives PV inverter makers a decisive advantage: lighter equipment without compromising protection. By sealing electronics against humidity, dust, and vibration, the compound safeguards outdoor power-conversion equipment and supports the industry's push toward lightweight, long-life solar hardware.