NPR-15DC Solar PV String Monitor Auxiliary Power Supply
The NPR-15DC Auxiliary Power Supply is a critical component in solar photovoltaic (PV) systems, designed specifically to deliver stable and reliable DC power to string monitoring equipment. These monitoring devices are essential for tracking the performance, efficiency, and health of individual PV strings, ensuring optimal energy production and early fault detection.
The NPR-15DC addresses the unique challenges of solar environments by providing a regulated 15V DC output, even amidst fluctuating input voltages caused by varying sunlight or temperature conditions. Its robust construction ensures durability in harsh outdoor settings, with resistance to temperature extremes, humidity, dust, and corrosion, often supported by a high IP rating for outdoor use.
Product Introduction
Key features include high conversion efficiency to minimize energy loss, critical in sustainable systems, and integrated protections against overloads, short circuits, surges, and reverse polarity to safeguard both the power supply and connected devices. Compatible with a wide input voltage range, it seamlessly integrates into diverse PV configurations without requiring additional inverters, maintaining system efficiency by operating directly on DC power. The unit is designed for easy installation, featuring standardized connectors and compact form factors suited for both commercial solar farms and residential setups. Compliance with international safety standards (e.g., IEC, UL) underscores its reliability and market readiness.
By ensuring uninterrupted power to monitoring systems, the NPR-15DC enhances overall PV system reliability, enabling real-time data collection for proactive maintenance, reduced downtime, and maximized energy yields. Its low self-consumption and adaptive design make it a vital component for maintaining the intelligence and efficiency of modern solar installations.
Product parameters
| Model | NPR-15DC | Dynamic response | 25% nominal load jump ±4%/500us |
| Rated operating voltage | 210VDC~1800VDC | Insulation voltage | 2000VDC |
| Power | 5W | Insulation resistance | ≥100MΩ |
| Power derating | 4%/℃ (above 70℃) | Leakage Current | 0.03mA RMS TYP.1200VDC |
| Output voltage and current | 5V/1A | Safety level | Class I |
| Ripple noise | ≤100mVp-p | MTBF | >215000h @25℃ |
| Maximum working efficiency | 85% | Operating temperature | -40℃～+70℃ |
| Power-off time | 20ms (TYP) / at Vin: 1000V DC | Storage temperature | -40℃～+105℃ |
| Start-up delay time | 500ms (TYP) / at Vin: 1000V DC |
Specification drawing