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Other Relays related product

GWZC-9604 Feeder Arc Flash Protection Relay
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GWZC-9604 Feeder Arc Flash Protection Relay

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

 

GWZC-9804 Arc Flash Protection Relay
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GWZC-9804 Arc Flash Protection Relay

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

GWZC-980​3 Automatic Synchronizing Device (ASD)​
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GWZC-980​3 Automatic Synchronizing Device (ASD)​

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

GWZC-9802 Directional Earth Fault Relay
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GWZC-9802 Directional Earth Fault Relay (DEF Relay)

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

GWZC-9801 Public Measurement and Control Device
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GWZC-9801 Public Measurement and Control Device

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

Technical Knowledge More
Wireless Temperature Monitoring System for Substations
Wireless Temperature Monitoring System: Application in Switchgear​
This article introduces the application of wireless temperature monitoring systems in high-voltage and low-voltage switchgear. The configuration of the wireless temperature monitoring system varies across different equipment. If you need a customized wireless temperature monitoring solution for your project, please visit our website for more information.
2025/09/08
GWZC-9804 Arc Flash Protection Relay
Switchgear Arc Flash Protection System Configuration Scheme
This article introduces the configuration scheme for a switchgear arc flash protection system. Busbar arc flash protection monitors the busbar compartment and trips the incoming breaker, while feeder arc flash protection monitors the circuit breaker compartment and cable compartment to trip the feeder breaker. A proper arc flash protection system configuration scheme can effectively protect personnel and equipment safety. For information on a reliable arc flash protection system configuration scheme, please visit our website.
2025/09/04
Arc Flash Protection Relay
Arc Protection Working Principle and Decision Process
Arc Flash Protection is a specialized safety system engineered to rapidly detect and mitigate destructive electrical arc flash faults. Unlike conventional overcurrent protection, it utilizes a combination of light and current sensors to identify an arc flash event within milliseconds. By triggering a circuit breaker to isolate the fault incredibly fast, Arc Flash Protection significantly reduces the explosive energy released, safeguarding personnel from severe injury and preventing extensive damage to electrical equipment like switchgear. This makes it an indispensable defense layer in industrial, commercial, and utility power systems.
2025/09/03
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