Protect Critical Loads
from Voltage Dips

As power quality demands continue to rise, reliable and continuous power supply is critical for sensitive industrial applications. P2 Power-DVR (Dynamic Voltage Restorer) provides fast and precise compensation for voltage sags, swells, and other grid disturbances, making it ideal for semiconductor manufacturing, precision industries, data centers, and other power- sensitive applications.

Core Advantages:

• Ultra-Fast Response – 2 ms full response to voltage disturbances
• Modular & Scalable Design – Flexible capacity and runtime expansion
• High-Efficiency Operation – Optimized for lower losses and stable performance
• Wide Temperature & High Protection - Reliable operation in harsh environments
• Intelligent Remote Monitoring – Enables digital energy management and smart O&M

Real-Time Monitoring & Fast Detection:

Continuously monitors grid voltage, frequency, and phase. When a disturbance exceeds the preset range, detection and compensation calculation are completed within 2 ms.

Energy Injection & Instant Compensation:

During compensation, the DVR dynamically injects energy from the supercapacitor, maintaining a smooth and stable voltage waveform at the load side.

Flexible Energy Management & High- Efficiency Operation:

The system operates with high efficiency and minimal energy loss. Under normal grid conditions, the load is supplied directly through the bypass circuit. After compensation, the supercapacitor is rapidly recharged within seconds, enabling the DVR to handle consecutive voltage disturbances.

Intelligent Communication & System Integration:

With RS485 and Ethernet connectivity, the DVR transmits real-time operating status, event records, and power quality data to energy management or monitoring systems. It supports remote monitoring, energy analysis, and predictive maintenance, transforming the DVR from a passive protection device into an intelligent grid node.

• QF2 and QF3 remain closed, while QF1 remains open.
• Power is supplied directly from the grid to the load through QF2, the bypass module, and QF3.

• When a voltage sag is detected on the grid side, the bypass module is turned off.
• The supercapacitor supplies energy to the load through the inverter.
• Response time is within 2 ms, and the standard supercapacitor configuration supports full-load operation for 3 seconds.

• When grid voltage returns to normal, the system transitions from compensation back to grid-connected operation.
• The bypass module is turned on, supplying the load directly by the grid, while the supercapacitor is recharged through the inverter module.

Voltage sags lasting even a few milliseconds can cause tripping, control resets, or catastrophic process interruptions across sensitive industrial equipment. The P2 Power Dynamic Voltage Restorer (DVR) provides instantaneous protection for the following critical equipment:

• Refrigeration Equipment Electronic Controller
• Semiconductor Manufacturing
• PLC
• Precision Machine Tools
• DC Motor
• Variable Speed Drive
• AC Contactor
• Computers