Automatic inspection method for high-pressure fire pump systems
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Since the fire pump is kept in standby for long periods, an automatic inspection system has been designed to prevent the pump from sticking or corroding. Last year, our company installed a new fire pump and high-voltage motor. The inspection mechanism involves using variable frequency output to drive the step-up transformer, with the output connections leading to the high-voltage switchgear, thereby enabling automatic inspection at low frequencies and low speeds. This year, a new project has been added: a new inspection method designed by the manufacturer, vector control. Vector control systems achieve low-speed inspection by controlling the stator current to regulate the electromagnetic torque. Has anyone used this method, and what were the results? What are the advantages and disadvantages of the two methods? Everyone is welcome to discuss.
The approach of using a low-voltage inverter connected to a step-up transformer to drive a high-voltage motor has not been used before, but the direct high-voltage inverter-driven approach is well-established and works without issues.