


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-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
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
Product Overview : The GWZC-9801 is a 35kV/substation protection and control relay with measurement, switching, communication (IEC 61850/Modbus), and fault logging, used in switchgear and industrial power systems.
Product functions(ANSI):25 | 51N | 59N
Communication functions : IEC61850 | IEC 60870-5-103 | MODBUS RTU |2× Ethernet Ports |2× RS-485