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GWZW-9681C  Generator Comprehensive Protection Relay
Generator Comprehensive Protection Relay Side View
Generator Comprehensive Protection Relay Rear View
GWZW-9681C  Generator Comprehensive Protection Relay
Generator Comprehensive Protection Relay Side View
Generator Comprehensive Protection Relay Rear View
GWZC-9681C Generator Comprehensive Protection Relay

Applicable Scope:The GWZC-9681C is a generator comprehensive protection relay that integrates differential protection and backup protection. Designed for protection and control of small to medium-sized hydro generators and steam turbine generators, it ensures reliable operation and equipment safety.

Product functions(ANSl):87G;60FL;50;50N;51;51N;51AC;40;49;46;46IT;58/59N;60FL;74;81L/81R

Communication functions: include the Ethernet 103 protocol and MODBUS RTU protocol, featuring 2 Ethernet ports and 2 RS485 communication interfaces.

Product Introduction Technical Parameter Size
Product Introduction:
        This is a versatile generator protection relay integrating differential protection, grounding protection, and backup protection. It not only provides comprehensive protection functions with precise and reliable sampling but also features multiple communication interfaces, including RS-485, IEC 103 Ethernet communication, and fiber optic communication. It is the optimal choice for small-capacity generator sets.
       For large-capacity generator protection, you may opt for our GWZC-9683 Generator Differential Protection Relay, GWZC-9682 Generator Rotor Ground Fault Protection Relay, and GWZC-9681 Generator Backup Protection Relay to form a complete generator protection system.
 

Product Functions:

1.Generator Differential Instantaneous Trip Protection (Trip) (ANSI 87G)
2.Generator ratio restraint longitudinal differential protection (Trip) (ANSI 87G)
3.Current Transformer Secondary Circuit Open(CT Open Circuit ) ​ (Alarm) (ANSI 60FL)
4.Differential Current Overthreshold Alarm (Alarm)
5.Instantaneous Overcurrent Protection (Trip) (ANSI 50)
      Voltage-Controlled Instantaneous OC Protection (ANSI 50V )
6.Time – limited Instantaneous Overcurrent Protection (Trip) (ANSI 50)
      Voltage-Restrained Time-Delayed Overcurrent Protection (ANSI 51V )
7.Definite – Time Overcurrent Protection (ANSI 51) (Trip)
      Voltage-Controlled Definite-Time Overcurrent Protection (ANSI 51V )
8.Inverse-Time Overcurrent Protection (ANSI 51AC) (Trip)
      Voltage-Restrained Inverse-Time OC Protection (ANSI 51V )
9.Overload Protection (Alarm/Trip) (ANSI 49)
10.Negative Sequence Instantaneous Overcurrent Protection (Trip)(ANSI 46)
11.Negative Sequence Inverse-Time Overcurrent Protection (Trip)(ANSI 46IT)
12.Negative Sequence Inverse-Time Overcurrent Protection (Trip)(ANSI 46IT)
13.Instantaneous Zero-Sequence Overcurrent Protection (Trip) (ANSI: 50N)
      Zero-Sequence Under-Voltage Blocked Instantaneous Zero-Sequence Overcurrent Protection(ANSI:50NZ)
14.Zero-Sequence Time-Limited Overcurrent Protection (Trip) (ANSI: 51N)
      Zero-Sequence Under-Voltage Blocked Definite-Time Zero-Sequence Overcurrent Protection(ANSI:51NZ)
15.Time – limited Zero-Sequence Overcurrent Protection (Trip) (ANSI: 51N)
16.Loss of Field Protection (LOF) (Trip) (ANSI: 40)
17.Overfrequency Protection (Trip) (ANS:81H)
18.Under – frequency Protection (Trip) (ANS:81L)
19.Overvoltage Protection (Trip) (ANSI:59)
20.Undervoltage Protection (Alarm/Trip) (ANSI:27)
      Undervoltage Protection with Current Blocking Logic (ANSI:27 + 50 Blocking)
21.Zero – sequence Overvoltage Protection (Alarm/Trip) (ANS:59N)
22.otential Transformer (PT) Fuse Failure Alarm (Alarm) (ANS:60FL)
23.PT Loss of Voltage Alarm (Alarm)
24.Control Circuit Supervision  (Alarm) (ANSI 74)
25.Loss of Mains Protection (LoM)  (Alarm/Trip) (ANSI 27+81R+32)
26.Non-Electrical Protection (Alarm/Trip)

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GWZW-9681C  Generator Comprehensive Protection Relay
Generator Comprehensive Protection Relay Side View
Generator Comprehensive Protection Relay Rear View
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