Adjustable Over/Under Voltage Protection: Safeguards household and industrial equipment from damage due to unstable voltages (130-300V overvoltage, 80-210V undervoltage) with customizable trip delays (0.1-10s). Automatically cuts power during abnormalities and restores supply once voltages stabilize, eliminating manual intervention.
Comprehensive Overcurrent Protection: Monitors currents up to 63A with adjustable trip delays (0.1-10s) and counts overcurrent occurrences (0-20 times). Ideal for preventing overloads in high-power appliances and industrial setups.
Real-Time Monitoring & Display: Displays live voltage, current, and frequency data with high accuracy. Features voltage/current correction (-10% to +10%) and frequency adjustment (-2.5% to +2.5%) for precise system calibration. Note: DC input shows voltage only.
Multiple Protection Modes & Energy Saving: Offers Standard/Manual/Automatic display modes and an energy-saving model. Equipped with fast power-down protection, password settings (000-999), and automatic reset for enhanced safety and usability.
Robust Performance & Wide Compatibility: Works with AC 100-240V/40-70Hz supplies, suitable for photovoltaic systems, frequency converters, and high-frequency interference environments. Compact (843666mm), lightweight (160g), and certified for reliability in -25℃ to +50℃ environments.
Product Introduction
NQVPD2J adjustable over-under-voltage protector is used for household and industrial power equipment protection, to prevent electrical appliances from working for a long time in a voltage unstable environment (too high, too low) and damaged, the product has overvoltage undervoltage and overcurrent automatic power off protection and automatic recovery of power supply after voltage and current restore stable rated value, the protection process and restore power supply process without manual intervention, no maintenance is required, the performance of this equipment is stable, the voltage and current display accuracy is high, and the anti-interference ability is strong, It can be used for high-frequency interference lines AC power output section of photovoltaic system and frequency converter.
Technical data
