Product

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

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.

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