This project installs PV panels above fish ponds or on the tops of agricultural greenhouses to realize "power generation on the panels, aquaculture or planting beneath the panels".
The environment features high humidity, moisture corrosion, and potential exposure to fertilizer or pesticide vapors. Electrical connection points are exposed to damp and even splashing conditions over the long term, making traditional connection methods highly vulnerable to corrosion-induced failures.
MC4 connectors with the highest protection rating (IP68) shall be mandatorily used, and all DC connection points shall be waterproof-bundled and arranged with optimized orientation.
1. Impervious to Humidity and Water Environments：
IP68-rated MC4 connectors maintain hermetic sealing even when fully submerged in water for extended periods. In installations above fish ponds, electrical safety and performance remain uncompromised even if connectors get soaked by condensation or splashing water.
Within greenhouses, high-humidity air and irrigation mist cannot penetrate the internal connection points, eliminating risks of metal terminal oxidation and insulation degradation.
2. Chemical Corrosion Resistance：
The nylon (PA) or polycarbonate (PC) housings of premium MC4 connectors exhibit excellent resistance to weakly corrosive substances common in agricultural environments, ensuring material integrity during long-term use.
3. Facilitates Agricultural Operation & Maintenance：
When PV panel maintenance or agricultural work below is required, modular MC4 connections enable quick disconnection—providing convenience for equipment servicing or spatial adjustment. Reconnection retains the original reliability, with no disruption to agricultural production schedules.
In such an extremely adverse humid and complex environment for electrical equipment, the DC system based on MC4 connectors has achieved zero water vapor-related failures. This not only ensures the continuous power generation of photovoltaic power stations but also supports the normal operation of agricultural activities underneath, perfectly embodying the stringent reliability requirements for key components under the "agricultural-photovoltaic complementary" model.
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