High-Efficiency Permanent Magnet Brushless Electric Coolant Pump for Solar PV Inverter Liquid Cooling Applications

The OWP-BL43-450T Electric Coolant Pump is engineered to deliver reliable thermal management for solar PV inverters, addressing the critical heat dissipation needs of high-power electronic components in renewable energy systems. With advanced brushless technology and robust construction, this pump ensures consistent performance in harsh outdoor environments, making it a cornerstone of efficient liquid cooling solutions for photovoltaic installations.

• Closed Impeller Design: Optimizes fluid dynamics to enhance pumping efficiency while minimizing turbulent flow, directly contributing to the pump’s ≤60dB noise control—ideal for noise-sensitive solar farms.
• Permanent Magnet Brushless Motor: Integrates compact dimensions with low power consumption (250W rated power), reducing energy waste and fitting seamlessly into space-constrained inverter setups.
• Long-Life Shaft Assembly: Utilizes high-wear-resistant friction pair materials, supporting a service life exceeding 20,000 hours and reducing maintenance frequency for solar installations.
• Centrifugal & Shielded Structure: Enhances operational stability by isolating motor components from the coolant, preventing contamination and extending reliability in continuous-duty scenarios.
• PWM Duty Cycle Speed Control: Enables precise flow rate adjustment (from rated 6000L/H to max 9000L/H) based on real-time thermal demands, optimizing energy efficiency and cooling performance.
• Comprehensive Protection Mechanisms: Incorporates reverse polarity, overvoltage, overcurrent, dry-run, and overtemperature protection to safeguard both the pump and inverter system from operational failures.

Flow rate VS head curve

Speed control & fault signal feedback

The OWP-BL43-450T Electric Coolant Pump is specifically tailored for liquid cooling systems in solar PV inverters, a critical application where thermal management directly impacts energy conversion efficiency and component longevity. Its 9000L/H maximum flow rate and 11M lift capacity ensure efficient heat transfer from power semiconductors (e.g., IGBTs) in inverters, preventing performance degradation caused by overheating. Compatible with common cooling media (glycol-water mixtures, dielectric oil) and operating within a -40℃ to 85℃ temperature range, the pump adapts to extreme weather conditions in solar farms worldwide. The IP68 protection rating guarantees dust and water resistance, while PWM speed control allows seamless integration with inverter control systems to match cooling output with real-time heat generation. This model’s compact design, low power consumption, and comprehensive protection features make it an indispensable component for enhancing the reliability and efficiency of utility-scale and distributed solar PV systems.

Overall Size