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  1. D

    ratchet logic

    Hi dears, Can someone explain this page of the power plant logic related to the ratchet system?
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    CT BOX (Current Transformer Box) in Electromotor

    No, it’s not the motor terminal box. It’s clearly labeled “CT BOX” on it.
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    CT BOX (Current Transformer Box) in Electromotor

    Inside the CT Box, there are only six terminals and nothing else. One of my colleagues mentioned that since the motor will be controlled by a VFD, this box is no longer needed and can be shorted. After all, the drive itself provides the necessary protection, so it seems that the CT Box is not...
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    CT BOX (Current Transformer Box) in Electromotor

    We have an 1800 kW electric motor equipped with a CT BOX (Current Transformer Box) mounted on it. If we plan to operate this motor through a VFD (Variable Frequency Drive), will these CTs still be used or will they become unused?
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    turbo-generator jacking systems

    Thank you for your time and the detailed answers you've given. I am a member of the logic design team at a generator manufacturing company. The generators we build, like other generators, only have one jacking or lifting pump. In our logic, when the shaft speed is between 0 and 320 RPM, the...
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    turbo-generator jacking systems

    The remaining question I have is this scenario: Suppose the shaft speed is decreasing due to a turbine trip. Meanwhile, our logic is programmed to engage the jacking oil pump when shaft speed falls below 320 rpm. But if the jacking pump fails to start, two critical questions arise: What...
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    turbo-generator jacking systems

    Thank you. Your response was extremely detailed and accurate.
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    turbo-generator jacking systems

    I have a question about turbo-generator jacking systems. Generators typically have a jacking system but don't have an emergency or backup jacking system. Assume the generator and turbine trip or shut down for any reason, but the jacking pump fails to start (due to a malfunction). What happens...
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    Jacking Of Generator Shaft

    I have a question about turbo-generator jacking systems. Generators typically have a jacking system but don't have an emergency or backup jacking system. Assume the generator and turbine trip or shut down for any reason, but the jacking pump fails to start (due to a malfunction). What happens...
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    MPCB (motor protection circuit breaker) - Earth Fault

    Hi dears, Can an earth fault cause an MPCB to burn? We have heaters in the turbogenerator where an earth fault has occurred. But the MPCB in the feeder of these heaters has burned. I think when an earth fault occurs in the heater, a high current flows which should lead to the circuit being cut...
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