Product

Introduction:​​ The partial discharge online monitoring system uses IoT and smart sensors to monitor power equipment without power outage. It employs TEV, AE, UHF, and temperature sensors to intelligently detect transformers, GIS, switchgear, and cables.
​Composition:​​ Includes monitoring software, host, sensors, PC, and mobile app.
​Functions:​​ Realtime monitoring and analysis of substation/power plant equipment to prevent faults.

Scope of Application: Primarily targets temperature measurement at key locations of primary equipment in substations, such as surfaces of dry-type transformers, box-type transformers, disconnect switches, conductive busbar joints, cable joints, and high-voltage switchgear contacts.

Main Functions:Monitors electrical equipment temperature in real time, detects abnormalities, analyzes data, and triggers automatic alarms to prevent accidents.

Product Overview:The GWZC-9604 Feeder Arc Flash Protection Relay provides highspeed arc flash detection and protection for medium voltage feeders. It features dual arc sensors, light intensity discrimination, and support for IEC 61850 communication. Designed for installation in switchgear compartments, it ensures reliable protection in critical applications.

Product Functions (ANSI): 50 | 51 | 67 | 79 | 86

Communication Functions: Modbus RTU | IEC 61850 (Optional) | Ethernet TCP/IP

Product Overview: GWZC-9804 Arc Flash Protection Relay provides rapid arc flash detection and isolation in medium-voltage switchgear. Features 4-channel arc sensor input, dual-criteria tripping (arc light + current), and Modbus/RS485 communication. Installs in switchgear panels for substation and industrial power system protection.

Product functions（ANSI）： 50/51 (Overcurrent) | 50BF (Breaker Failure) | 74TC (Trip Circuit Monitoring)
Communication functions: IEC61850 （Optional）| ​​IEC 60870-5-103 | MODBUS RTU | 2× Ethernet Ports | 2× RS-485

Product Overview: GWZC-9000 Busbar Protection Panel provides comprehensive protection for electrical busbars against various faults, ensuring system stability. Features differential protection function, configurable settings, and support for Modbus RTU, IEC61850(Optional). Installs in substation control rooms for power system busbar protection in transmission and distribution networks.

Product functions（ANSI）：87 | 50BF | 50BF | 50 | 60 | 60 | 60 | 50 | 27
Communication functions: IEC61850 | ​​IEC 60870-5-103 | MODBUS RTU | 3× Ethernet Ports | 3× RS-485

Product Overview : The GWZC-9872 Loop Closing Protection Relay provides advanced loop closing protection for high-voltage power systems. Key features include automatic loop detection, synchronization verification, and fault isolation. Designed for installation in substation control panels, it is ideal for utility grid applications.

Product functions（ANSI）：51V | 51 | 51 | 51N | 67 | 50N | 51N | 51N | 59 | 27 | 47 | 74

Communication functions : IEC61850 | ​​IEC 60870-5-103 | MODBUS RTU | 2× Ethernet Ports | 2× RS-485

Product Overview : GWZC-9803 Automatic Synchronizing Device (ASD) enables safe and efficient grid connection by automatically matching voltage, frequency, and phase angle. Features fast synchronization algorithms, adjustable parameters, and IEC60870-5-103 communication. Installs in substation control panels for utility-scale power grid.

Product functions（ANSI）：25 | 25/79 | 27/79 | 39/50BF

Communication functions : IEC61850 | ​​IEC 60870-5-103 | MODBUS RTU | 2× Ethernet Ports | 2× RS-485

The GWZC-9000 sewage treatment automation control system integrates advanced control, monitoring, and protection technologies to enhance the efficiency, reliability, and safety of the sewage treatment process. The system automates key functions such as pump station control, flow regulation, water quality monitoring, and fault detection, reducing manual intervention and minimizing downtime. It employs intelligent protection relays, programmable logic controllers (PLCs), and remote terminal units (RTUs) to collect realtime data on water quality, flow rate, and equipment status.

The GWZC-9000 Drainage Pumping Station Automation System integrates PLC controllers, level sensors, and remote telemetry to automate floodwater management. It monitors realtime water levels, pump status, and flow rates using ultrasonic sensors and IoT gateways, triggering pump sequencing during heavy rainfall or rising tides. SCADA enables remote operation via HMI dashboards, while embedded algorithms optimize pump runtime to prevent overflow and reduce energy costs. With fault diagnostics (motor failures, blockage alerts) and SMS/cloud alarms, it minimizes urban flooding risks.

Product Overview : The ​GWZC-9802​ Directional Earth Fault Relay provides accurate directional impedance measurement for earth faults, featuring ANSI 67N protection, ±1% angle accuracy, and 4ms response time. It supports IEC 61850, Modbus, and DNP3.0 communication, operating in harsh environments from -40°C to +85°C to prevent cascading failures.

Product functions（ANSI）：67N | 21 | 50/51

Communication functions : IEC61850 | ​​IEC 60870-5-103 | MODBUS RTU | 2× Ethernet Ports | 2× RS-485