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Numeric protection panel​ related product

GWZC-9000 Busbar Protection Panel
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GWZC-9000 Busbar Protection Panel

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

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GWZC-9000 Fault recorder panel (​FRP) (ANSI 21)

Introduction : The Fault Recorder Panel (FRP) serves as the “black box” of power systems, capturing real-time voltage/current waveforms and digital signals during faults to provide critical data for fault analysis and protection verification. ​(ANSI 21)

Communication protocols : ​IEC 60870-5-101/103/104 ,IEC 61850(MMS/GOOSE/SV), Modbus RTU​ & ​Modbus TCP​,RJ-45 , RS-485

GWZC-9000 Power measurement and control panel
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GWZC-9000 Power measurement and control panel

Application Scope : The Power Measurement and Control Panel is a key substation automation device. It monitors and controls auxiliary equipment (like DC systems, station power, fire protection), featuring data acquisition, communication, alarms, and IEC 61850-compliant remote control.

Product functions(ANSI):60 | 59N | 25 | 59 | 50/51 | 50N/51N | 94

Communication protocols : ​IEC 60870-5-101/103/104 ,IEC 61850(MMS/GOOSE/SV), Modbus RTU​ & ​Modbus TCP​,RJ-45 , RS-485

Low-voltage load shedding panel
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GWZC-9000 Low-voltage load shedding panel

Application Scope : The GWZC-9000 low-frequency and low-voltage load shedding panel is a critical protection device in power systems. It automatically sheds non-essential loads according to preset sequences when system frequency or voltage abnormally drops, preventing system collapse.

Product functions(ANSI):827 | 59 | 81U | 81O | 60

Communication protocols : ​IEC 60870-5-101/103/104 ,IEC 61850(MMS/GOOSE/SV), Modbus RTU​ & ​Modbus TCP​,RJ-45 , RS-485

RTU Communication Panel
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GWZC-9000 Remote Terminal Unit (RTU) Communication Panel

Application:Used in PV plants, substations, power plants, and power automation systems for protocol conversion, data acquisition, and transmission.
Protocol Conversion: Supports mutual conversion and uplink of Modbus, IEC 103/104, IEC 61850, and TCP/IP.
Data Handling: Acquires data from protection relays/power meters, converts it to SCADA/dispatch-compliant protocols, and transmits to master stations/dispatch systems.

Main Transformer Protection Panel
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GWZC-9000 Main Transformer Protection Panel

Application Scope : The GWZC-9000 main transformer protection control panel is designed for the protection and control of medium to large capacity main transformers with voltage levels of 11kV, 33kV, 69kV, 115kV,132.

Product functions(ANSI):87H | 87 | 87A | 60 | 50/51 | 51 | 50N/51N | 51N | 49 | 50G/51G | 38/74 | 59 | 59N | 27 | 74 | 60 | 27/81U | 27/81L | 30 | 71G | 26/49 | 63 | 38

Generator Protection Panel
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GWZC-9000 Generator protection panel​

Product Overview : The ​GWZC-9000 generator protection panel is mainly used for the control and protection of hydroelectric units, gas turbine units, biogas units, and large diesel generator sets.

Product functions(ANSI):87H | 87 | 87A | 49 | 50/51 | 51 | 49 | 46 | 50N/51N | 40 | 32 | 81O/81U | 59/27 | 59N | 64S | 60 | 27 | 27/81U | 74 | 50N/51N | 50G/51G

Product Components : GWZC-9884 Generator Differential Protection Relay | GWZC-9885 Generator Rotor Earth Fault Protection Relay | GWZC-9886 Generator Backup Protection Relay | Panel and accessories

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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