Product description The interturn short circuit of the generator rotor winding is a common fault in power system.When the fault occurs, the current of rotor and the temperature of windings will increase, that limits the output of the generator, even affects the normal operation of the generator. The interturn short circuit is usually determined by measuring the AC impedance and power loss of the generator rotor windings. The traditional measuring method is to use a lot of test instruments to measure after assembling in the field. This method which requries a lot of test equipment to form a measurement system has the shortcomings of cumbersome, time-consuming, tedious sorting data and lower measurement accuracy. With the continuous development of digital signal processing technology, the new microprocessor and algorithms are constantly emerging, we developed the generator rotor AC impedance tester based on digital signal processor (DSP). The instrument is with digital signal processing system for the hardware platform, give full play to the computation ability of the digital signal processor, making the calculating speed and accuracy of the instrument has been greatly improved, to ensure the normal operation of the power system.
Fearure 1.Automatic (manual) acquisition, measurement, display, store and print all measuring parameters and the AC impedance characteristic curve;
2.Real-time display of measured data and AC impedance characteristic curve, easy to store and print;
3.Using 320 × 240 large-screen LCD display, English menu prompts, easy to operate;
4.Built in large capacity non-volatile memory: can store 200 sets of measurement data and curves;
5.Builtin high precision real-time clock function: can calibrate date and time;
6.Built in high-speed micro thermal printer: can print measuring and historical data;
7.Can test the no-load and short circuit of single-phase transformer, and also can make volt ampere characteristic test of PT (CT) and arc suppression coil.
8.With a perfect over-voltage, over-current protection function, and the overvoltage and over current protection value can be adjusted automatically according to the setting of test parameters, not only simple but also ensures the safety of the tested equipment.
Fearure
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