Scope of Application: The GWZC-9586 low-voltage generator protection relay is suitable for backup protection of 400V low-voltage generators below 1000kW. It can be installed in panels or locally in switchgear.
Protection Functions(ANSI): 50 | 51 | 50N | 51N | 50I | 50V | 32 | 81U | 80O | 59 | 27
Monitoring and Control Functions: • 14 channels of remote signal input collection; • 8 channels of relay outputs; • Event SOE recording
Communication Functions: • 2 Ethernet interfaces (supporting Ethernet 103 protocol, optional); 1 RS485 communication port (supporting Modbus-RTU protocol)
Product Introduction
The GWZC-9586 low-voltage generator protection relay is primarily designed for the protection of 400V low-voltage generators below 1000kW, serving as a comprehensive and practical backup protection solution. With its compact and aesthetically pleasing design, along with reliable quality, this generator protection relay is the most ideal choice for low-voltage generator sets.
Protection Functions(ANSI)
Phase Time Overcurrent Protection (ANSI 50/51)
Inverse Time Overcurrent Protection (ANSI 51)
Overload Protection (ANSI 49)
Zero-Sequence / Ground Overcurrent Protection (ANSI 50N/51N)
Overvoltage Protection (ANSI 59)
Undervoltage Protection (ANSI 27)
Overfrequency Protection (ANSI 81O)
Underfrequency Protection (ANSI 81U)
Reverse Power Protection (ANSI 32)
CT Circuit Failure Protection (ANSI 74C)
PT Circuit Failure Protection (ANSI 74V)
Control Circuit Failure Protection (ANSI 74)
System Supply Loss Protection (ANSI 27)
Non-Electrical Protection (ANSI 30)
Monitoring and Control Functions
Voltage: Ua, Ub, Uc, Uab, Ubc, Uca
Current: Ia, Ib, Ic, Ia, Ib, Ic, 3I0
Power Parameters: P (Active Power), Q (Reactive Power), S (Apparent Power), Cosφ (Power Factor)
Frequency: f
Electrical Energy:
EP+ (Active Energy Import)
EP- (Active Energy Export)
EQ+ (Reactive Energy Import)
EQ- (Reactive Energy Export)
14-channel Binary Input (Status Input) Acquisition
8-channel Relay Output
Event Sequence of Events (SOE) Recording
Communication Function
Communication Interfaces:
2 Ethernet ports (Supporting IEC 60870-5-103 protocol, configurable option).
1 RS485 communication port (Supporting Modbus-RTU protocol).
Time Synchronization Function:
Supports time synchronization via communication messages, SNTP, and IRIG-B code.




