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Power system stability control device related product

GWZC-9890D Anti-islanding protection relay
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GWZC-9890D Anti-islanding protection relay(AIP)

Product Overview : GWZC-9890D Anti-islanding Protection Relay is designed for distributed generation systems, providing comprehensive protection, measurement, and control functions at grid interconnection points. It effectively prevents islanding conditions and ensures safe operation of distributed power sources.

Product functions(ANSI):81O| 81U| 59| 27| 81R | 32 | 94 | 67 | 50N/51N | 59N | 79 | 60FL | 50H/51H

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

GWZC-9790N Reverse Power Protection Relay
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GWZC-9790N Reverse Power Protection Relay (ANSI 32)

Product Overview : The ​GWZC-9790N​ reverse power relay detects and blocks reverse power flow in 6.6kV-33kV systems, with adjustable trip settings for generator and grid protection in switchgear applications.

Product functions(ANSI):50 | 51 | 49 | 50N/51N | 32 | 32R | 79 | 59 | 27 | 59N | 74

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

GWZC-9890J Fault Islanding Protection Device
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GWZC-9890J Fault Islanding Protection Device

Product Overview : GWZC-9890J​ is a fault disconnection relay for ​10-35kV grids, detecting and isolating faults (overcurrent, undervoltage, frequency issues) to prevent system failures.

Product functions(ANSI):59N | 27 | 59 | 81U | 81O | 78 | 60 | 94

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

GWZC-9890L Low-Frequency Low-Voltage Load Shedding DeviceGWZC-9890L Low-Frequency Low-Voltage Load Shedding Device
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GWZC-9890L Low-Frequency Low-Voltage Load Shedding Device

Product Overview : GWZC-9890L Underfrequency/Undervoltage Load Shedding (UFUVLS) device is a grid protection system that automatically cuts loads to maintain stability during frequency drops or voltage dips, preventing blackouts in renewable-rich power networks.

Product functions(ANSI):27L1, 27L2, 27L3 | 59L1, 59L2, 59L3 | 81L1, 81L2, 81L3 | ​81O1, 81O2, 81O3

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

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