Schneider PowerLogic P5V20 Voltage Protection Relay: All-Round Voltage and Frequency Protection Solution

The Schneider PowerLogic P5V20 Voltage Protection Relay is an intelligent protection device designed for the efficient operation of power systems. Its core value lies in providing a complete set of voltage and frequency protection functions, while integrating high-precision measurement, recording, and monitoring capabilities to safeguard the stable operation of feeders, distribution transformers, and industrial equipment.

1. Core Protection Functions: Covering Full-Scenario Voltage and Frequency Anomalies

Voltage Protection: Supports multi-dimensional protection such as overvoltage, undervoltage, phase voltage imbalance, and zero-sequence voltage (ground fault). Action thresholds and delays can be flexibly configured according to system requirements, enabling accurate identification of voltage fluctuations caused by lightning strikes, sudden load changes, etc.

Frequency Protection: Equipped with overfrequency and underfrequency protection, as well as frequency change rate (df/dt) monitoring, effectively addressing frequency instability issues in scenarios like sudden grid load changes and distributed generation grid connection.

2. Measurement and Monitoring: Data-Driven Operation Optimization

High-Precision Measurement: Real-time acquisition of key electrical parameters including three-phase voltage, frequency, active/reactive power, and power factor, with a measurement accuracy of 0.2 class, providing reliable data for system energy efficiency analysis and fault diagnosis.

Recording and Monitoring: Built-in event recorder and waveform capture function, which can store voltage/frequency waveforms and operation events before and after faults. Data can be exported via communication interfaces, helping operation and maintenance personnel quickly locate fault roots.

3. Extended Control Capability: Integrated Intelligent Switchgear Management

In addition to protection and monitoring, the P5V20 also features switchgear control functions. It can directly drive devices such as circuit breakers and disconnectors through relay outputs to realize operations like remote switching and automatic reclosing. Combined with logic programming functions, it can automatically trigger control commands based on preset conditions (e.g., voltage recovery, frequency stabilization), improving the automation level of the distribution system.

4. Application Scenarios: Adaptable to Industrial and Utility Distribution Networks

This relay is suitable for scenarios such as industrial plants, commercial buildings, and utility substations. Especially in systems with high requirements for voltage/frequency stability (e.g., distributed photovoltaic grid connection, microgrid control, sensitive load protection), it ensures power supply continuity and equipment safety through precise protection and rapid response.

By integrating protection, measurement, and control into one, the P5V20 not only simplifies the equipment configuration of the distribution system but also helps users build smart grids with digital functions (e.g., support for IEC 61850 communication protocol), enabling efficient operation and maintenance as well as risk prediction.