Designing Safer Solar Arrays: A Practical Guide to DC Isolation
Solar projects in hot, dusty, and high-irradiance regions place unusual demands on direct-current switching equipment. A rooftop or ground-mounted array may operate for decades while its disconnects face ultraviolet exposure, temperature cycling, airborne dust, humidity, and repeated maintenance activity. Choosing the correct DC isolation device is therefore both an electrical-safety decision and a long-term reliability decision. What a solar DC isolator actually does A DC isolator, also called a DC disconnect in some markets, separates a section of the photovoltaic array from downstream equipment. It gives technicians a controlled way to de-energize conductors for inspection, inverter replacement, emergency response, or … Continue reading