Comprehensive Introduction:
I.LYJZ-3000Generator Rotor Speed TesterProduct Overview
Inter-turn short circuit in the generator rotor winding is a common fault in power systems. When such a fault occurs, the rotor current increases, the winding temperature rises, limiting the generator's output, and in severe cases, it can affect the normal operation of the generator. Inter-turn short circuits are usually detected by measuring the AC impedance and power loss of the generator rotor winding. The traditional measurement method involves using multiple test instruments and meters, assembling them on-site before measurement. This method of building a measurement system with many test instruments has disadvantages such as bulky equipment, time-consuming and labor-intensive procedures, cumbersome data organization, and low measurement accuracy.
With the continuous development of digital signal processing technology, new microprocessors and algorithms are constantly emerging. Based on this, we have developed a Generator Rotor AC Impedance Tester based on the Digital Signal Processor (DSP). This instrument uses a digital signal processing system as the hardware platform, fully leveraging the computational capabilities of the DSP, greatly improving the calculation speed and accuracy of the instrument, thus providing a guarantee for the normal operation of the power system.
II.LYJZ-3000Generator Rotor Speed TesterFunctional Features
Fully automatic (manual) acquisition, measurement, display, storage, and printing of all measurement parameters and AC impedance characteristic curves;
Real-time display of measurement data and AC impedance characteristic curves, convenient for storage and printing;
Adopts a 320×240 large-screen LCD display with Chinese menu prompts for easy operation;
Built-in large-capacity non-volatile memory: can store 200 sets of measurement data and curves;
Built-in high-precision real-time clock function: allows date and time calibration;
Comes with a high-speed micro thermal printer: can print measurement and historical data;
Can also be used for no-load and short-circuit tests of single-phase transformers, and volt-ampere characteristic tests of voltage (current) transformers and arc suppression coils;
Has comprehensive overvoltage and overcurrent protection functions, where the protection values are automatically adjusted based on the test parameter settings, ensuring both convenience and the safety of the equipment under test.
III. Technical Parameters
Measurement Range
Impedance: 0～999.9Ω
Voltage: 0～600V
Current: 0～120A
Power: 0～72kW
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