Key Technical Specifications

• Voltage Ratings: Compatible with multiple voltage levels, including 66kV, 35kV, 33kV, 22kV, and 12.5kV, catering to various power distribution scenarios.
• Rated Current: Supports a range of current specifications, such as 250A, 500A, 630A, and 1000A, to match different load requirements.
• Protection Functions: Integrated with comprehensive protection logics, covering overcurrent, ground fault, voltage loss, overvoltage, undervoltage, overload, and impedance protection, ensuring full-coverage electrical protection.
• Communication Protocols: Compliant with mainstream industrial communication protocols including DNP3, IEC 61850, and Modbus, enabling seamless integration with SCADA systems for remote monitoring and control.

Product Features

High Reliability

Modular Design

Intelligent Operation

Product Structure & Components

• Main Unit: Houses core power components including current transformers (CT), potential transformers (VT), and dedicated processing circuits, responsible for signal acquisition, data analysis, and fault handling.
• Control Panel: Designed for on-site operation and real-time status monitoring, equipped with LED indicator lights and physical buttons to display operating status, fault alerts, and support manual parameter adjustment.
• Communication Interfaces: Configured with versatile communication ports such as RS-485, optical fiber interfaces, and Ethernet ports, facilitating stable data transmission between the device and upper computers or peripheral electrical equipment.

Application Areas

• Substation Distribution Automation: Provides comprehensive protection and monitoring for transformers, generators, and distribution lines, ensuring the safe and stable operation of substation equipment.
• Industrial Plant Power Distribution Systems: Prevents unexpected shutdowns of production equipment caused by electrical faults, protecting critical motors, control systems, and production machinery to maintain continuous industrial production.
• Municipal Power Supply: Safeguards the stable operation of urban power grids, automatically isolates faulty areas to reduce the scope of power outages, and improves the reliability and resilience of municipal power supply services.

Installation & Maintenance

Installation Requirements

• Environmental Conditions: The device must be installed in a dry, well-ventilated power distribution cabinet or power room. Avoid direct sunlight, high humidity, dust accumulation, and corrosive gas environments to ensure optimal operating conditions.
• Wiring Specifications: All wiring must comply with strict electrical codes and the product’s official wiring diagram. Special attention shall be paid to the correct polarity of current transformers (CT) and voltage transformers (VT) to avoid functional abnormalities or equipment damage.

Maintenance Essentials

• Regular Inspections: Conduct routine checks to verify tightness of wiring connections, integrity of fuses, and normal operation of instrument indicator lights. Timely resolve loose connections, blown fuses, or abnormal indicator issues.
• Firmware Upgrades: Perform firmware updates as needed to fix known software defects, optimize protection algorithms, and add new functional features, keeping the device in optimal operating condition.
• Fault Troubleshooting: Utilize the device’s built-in self-test function or retrieve fault logs via the upper computer to quickly locate fault causes, implement targeted repairs, and shorten fault resolution time.