The Rockwill three-phase generator circuit breaker is designed for installation between the generator and the step-up transformer in power plants. It provides a compact, reliable solution for generator control and protection in utility and industrial generation facilities.
The breaker employs proven arc-quenching technology with a robust operating mechanism to handle the demanding switching duties of generator applications, including frequent start-stop cycles and load rejection. Its open, accessible design facilitates inspection and maintenance, while the integrated disconnecting and earthing functions reduce the overall footprint within the power plant auxiliary system.
Key Features
Compact open design ： Minimal footprint for integration into existing power plant layouts and retrofit projects
Integrated switching functions： Combines circuit-breaking, disconnecting, and earthing in a single unit
High continuous current rating ： Suitable for generators up to the medium-output range at 24 kV class
High short-circuit capability ： Rated to withstand the fault levels typical of generator-fed systems
Robust operating mechanism ： Designed for frequent switching operations including pumped-storage duty cycles
Proven arc-quenching technology ： Reliable current interruption under all fault and normal switching conditions
Flexible busbar connection : Adaptable to open busbar configurations common in auxiliary power systems
Technical Parameters
Parameter
Value
Rated voltage (Ur)
24 kV
Rated normal current (Ir)
6900 A
Rated short-circuit breaking current (Isc)
63 kA
Rated peak withstand current
160 kA
Rated short-time withstand current (3 s)
63 kA
Rated frequency
50 / 60 Hz
Insulation level (Um / PF / BIL)
24 / 50 / 125 kV
Applications
Generator main circuit protection and control in thermal, hydro, and gas-turbine power plants
Retrofit replacement of existing generator circuit breakers in aging power stations
Main Categories: Medium and High Voltage Switchgear/Power and Distribution Transformers/Lightning Protection and Electrical Insulation/Substations and E-Houses/Electrical Panel and Controlgear
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The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.
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