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Products & Solutions. Generator Circuit-breakers (GCB) Generator circuit-breakers protect important assets in power plants by clearing potential harmful short-circuit faults in tens of milliseconds, preventing severe damages and enhancing power plant availability. Chat with Live Agent.
Jan 14, 2019 · We will first consider a three-phase-earth fault between the GCB and generator G1. Application of the MVA method allows the value of the short-circuit symmetrical current to be assessed in just a few steps.
1. What Is a Generator Circuit Breaker? At the heart of power generation safety lies the Generator Circuit Breaker (GCB), a device engineered to prevent damage to generators and their ancillary systems by promptly interrupting current flow during electrical faults.
GE's Generator Circuit Breakers (GCBs) are ideally suited for new and refurbished power plants from 50 MW to 1,500 MW and feature advanced technology with spring-spring-operated mechanisms.
GCB plays an important role in switching the circuit between generator and transformer in a power plant. It protects important assets in power plants by clearing potential harmful short-circuit faults in tens of milliseconds, preventing severe damages.
Generator Circuit Breakers were used in multi-unit stations where a number of relatively small generators were connected to a common bus. The rapid increase in generator size and system fault current levels soon exceeded the interrupting capabilities of this type of switchgear.
Siemens generator switchgears are equipped with the reliable and sustainable vacuum technology, perform your generator circuit-breaker (GCB) duty calculation!
