OWP-BL43-200 Electric Coolant Pump: Reliable Performance for Insulating Oil Circulation Systems
Designed specifically for electric insulating oil applications, the OWP-BL43-200 Electric Coolant Pump is a high-performance, durable solution engineered to meet the rigorous demands of industrial high-voltage electrical equipment cooling. Equipped with advanced protection features and precision-engineered components, this pump ensures stable, efficient circulation of insulating oil—critical for maintaining the safety and longevity of power transformers, reactors, and other high-voltage devices.
Core Advantages
This single-stage centrifugal pump stands out with its magnetic force transmission (shield pump structure), eliminating leakage risks and ensuring contamination-free oil circulation. Powered by a high-efficiency brushless DC motor, it delivers over 20,000 hours of reliable service with low power consumption. Thanks to professional electromagnetic theory design verification, its motor efficiency exceeds competitors by 3-5%, while simulation-optimized hydraulic design (via professional software) achieves perfect matching between the impeller and volute, boosting hydraulic efficiency significantly.
Safety is paramount: the pump integrates comprehensive protection mechanisms, including constant flow control, reverse polarity protection, dry running protection, and safeguards against overvoltage, overcurrent, overload, and overtemperature. Encased in nylon plastic capsulated magnets and built with automotive-grade electronic components, it withstands extreme operating environments—from -40℃ to +85℃—and achieves an IP68 rating for complete dust and water protection. With noise levels ≤60dB, it operates quietly without disrupting workspaces.
Technical Specifications
| Parameter |
Details |
| Power Input |
24VDC (18-32VDC) |
| Rated Power |
250W |
| Rated Flow Rate |
2800L/H @ H=16M |
| Maximum Flow |
4800L/H |
| Maximum Lift Head |
20M |
| Working Temperature Range |
-40℃ to +85℃ (-40°F to +185°F) |
| Outlet Diameter |
38mm (1.5inch) |
| IP Rating |
IP68 |
| Noise Level |
≤60dB |
| Service Life |
＞20000hours |
| System Pressure |
-0.5-2.5 Bar (at 100℃/212°F) |
| Ambient Working Conditions |
-40℃ to +85℃ (-40°F to +185°F), Humidity ≤90% |
Applications: Focus on Insulating Oil Circulation
The OWP-BL43-200 is tailor-made for electric insulating oil circulation, a critical function in high-voltage electrical equipment. It ensures efficient heat dissipation and insulation maintenance for oil-immersed power transformers (110kV, 220kV, 500kV and above), where it circulates insulating oil to absorb heat from cores and windings—preventing overheating and extending equipment lifespan. It is also ideal for oil-immersed reactors, oil circuit breakers, and oil-immersed transformers (current/voltage), where reliable oil flow is essential for arc quenching, oxidation prevention, and stable operation under high load.
Whether used in natural or forced oil circulation systems, its wide voltage range (18-32VDC), robust construction, and extreme temperature resistance make it suitable for harsh industrial environments. The pump’s constant flow control guarantees consistent oil circulation, while its dry running and overload protection prevent damage during unexpected operating conditions—making it a trusted choice for critical power system cooling.
Performance Curve
Dimensional Drawing
