Product Overview : The GWZC-9651 VT Protection Relay protects VTs (11kV-400kV) by detecting voltage faults. Used in substations to ensure accurate protection measurements.
Product functions(ANSI):59 | 27 | 59N/27N
Communication functions : IEC61850(Optional) | IEC 60870-5-103 | MODBUS RTU | 1× Ethernet Ports | 1× RS-485
Product Overview : The GWZC-9661 Automatic Transfer Switch (ATS) automatically switches power sources to ensure uninterrupted supply, with voltage/frequency monitoring and fault protection for critical facilities. Complies with IEC/IEEE standards.
Product functions(ANSI):50/27| 50/51| 79| 60| 74
Communication functions : IEC61850(Optional) | IEC 60870-5-103 | MODBUS RTU | 1× Ethernet Ports | 1× RS-485
Product Overview : GWZC-9641 Capacitor Protection Relay provides overcurrent, over/undervoltage, unbalance, and thermal protection for shunt capacitor banks, with inrush restraint.
Product functions(ANSI):50 | 51 | 59 | 27 | 50N/51N | 46 | 47
Communication functions : IEC61850(Optional) | IEC 60870-5-103 | MODBUS RTU | 1× Ethernet Ports | 1× RS-485
Product Overview : GWZC-9631 Motor Protection Relay safeguards asynchronous motors (≤1600kW) against overload, short-circuit, and voltage/phase faults. Features motor control, monitoring, and Modbus communication. Installs in MCCs for industrial applications like pumps and compressors.
Product functions(ANSI):50 | 51 | 46 | 46 | 49 | 48 | 50N/51N | 27 | 49 | 99 | 86 | 90
Communication functions : IEC61850(Optional) | IEC 60870-5-103 | MODBUS RTU | 1× Ethernet Ports | 1× RS-485
Product Overview : GWZC-9621 GWZC-9621 Distribution transformer protection relay safeguards ≤1600kVA station/grounding transformers (≤35kV) with integrated monitoring, designed for LV switchgear.
Product functions(ANSI):50/51/27 | 51 | 46 | 50G/51G | 49 | 59 | 27 | 74
Communication functions : IEC61850(Optional) | IEC 60870-5-103 | MODBUS RTU | 1× Ethernet Ports | 1× RS-485
Product Overview : GWZC-9611 Feeder Protection Relay Protects, controls (auto-reclosing), and monitors MV distribution feeders (11kV-33kV). Installed in substation/industrial feeder switchgear to safeguard outgoing circuits.
Product functions(ANSI):50 | 51 | 50N | 51N | 49 | 79 | 50 | 81U | 27 | 64
Communication functions : IEC61850(Optional) | IEC 60870-5-103 | MODBUS RTU | 1× Ethernet Ports | 1× RS-485
Product Overview : This FO Line Diff Relay protects 132kV and below transmission lines in ungrounded/low-resistance systems, offering primary/backup protection with monitoring. Supports switchgear/panel mounting via fiber channels with E1 interface.
Product functions(ANSI):87L |50/51 | 51 |50N/51N | 51N | 81U | 49 | 79 | 60 | 60 | 60 | 60/51 | 94 |21
Communication functions : IEC61850 | IEC 60870-5-103 |MODBUS RTU |2× Ethernet Ports | 2× RS-485
Product Overview : GWZC-9916 Bus Differential Protection Relay Applicable for voltage levels up to 132kV, supporting various busbar configurations including single bus, sectionalized single bus, triple-section single bus, double bus, double bus with single section, and double bus with double sections.
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
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
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