Microcomputer-based comprehensive protection device

The WGB-871 Microcomputer-Based Integrated Protection Device is a cost-effective power protection equipment introduced by XJ Electric.

Application Scope

The WGB-871 is suitable for various distribution and power consumption sites with voltage levels of 10kV and below. It can be flexibly configured as a line protection, measurement, and control device; capacitor protection, measurement, and control device; plant transformer protection, measurement, and control device; motor protection, measurement, and control device; and busbar section charging protection device. Specifically, line protection is applicable to lines and feeders of 10kV and below; plant transformer protection is suitable for plant transformers, station service transformers, or grounding transformers of 10kV and below; capacitor protection is designed for shunt capacitors of 10kV and below; motor protection is applicable to small and medium-sized asynchronous motors of 10kV and below with a capacity under 2MW; charging protection, measurement, and control are used for busbar section charging of 10kV and below.

Product Features

• High Performance: Equipped with a 32-bit high-performance embedded microprocessor, large-capacity RAM and Flash Memory, and utilizing an SoC solution, it offers excellent data processing, logical operation, and information storage capabilities, with fast operation speed and high reliability.
• Superior Design: Features an integrated, fully enclosed metal casing with strong dustproof, anti-corrosion, and anti-contamination capabilities. The platform-based integrated core design facilitates maintenance and significantly reduces the downtime of protected equipment.
• Flexible Power Supply: The device and operating power supply support AC/DC220V or AC/DC110V, compatible with both AC and DC, offering strong adaptability.
• Convenient Communication: Supports Ethernet and RS485 communication modes, compliant with IEC-60870-5-103 and Modbus protocols, enabling easy integration into DCS systems and automation systems from other manufacturers to meet various networking needs.
• Rich Functionality: Includes comprehensive measurement, telemetry, and remote control functions with a measurement accuracy of ±0.5% and a station SOE resolution of 1ms. It can store 100 event report records, 100 action report records, and continuously record 20 fault waveforms, with each waveform capturing 10 cycles of current and voltage. The user-friendly, fully Chinese menu interface allows flexible configuration of the control circuit to adapt to various operating mechanisms.

Technical Specifications

• Rated Power Supply Voltage: DC or AC 220V or DC 110V.
• Rated AC Parameters: AC voltage 100V, AC current 5A or 1A, rated frequency 50Hz.