Generator rotor winding inter-turn short circuit is a common fault in power system. When this kind of fault occurs, the rotor current increases and the winding temperature increases, which limits the output of the generator and affects the normal operation of the generator in severe cases. Inter-turn short circuit is usually determined by measuring the AC impedance and power loss of the generator rotor winding. The traditional measurement method is to use multiple test instruments and meters to measure after on-site assembly. This method, which requires a lot of test instruments and meters to form a measurement system, has the disadvantages of heavy test equipment, time-consuming and laborious, cumbersome data sorting and low measurement accuracy.

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Key words:

Generator testing instrument

measurement

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400-068-3818

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- Commodity name: ZFZK-502B generator rotor AC impedance tester
Generator rotor winding inter-turn short circuit is a common fault in power system. When this kind of fault occurs, the rotor current increases and the winding temperature increases, which limits the output of the generator and affects the normal operation of the generator in severe cases. Inter-turn short circuit is usually determined by measuring the AC impedance and power loss of the generator rotor winding. The traditional measurement method is to use multiple test instruments and meters to measure after on-site assembly. This method, which requires a lot of test instruments and meters to form a measurement system, has the disadvantages of heavy test equipment, time-consuming and laborious, cumbersome data sorting and low measurement accuracy.

1. Overview:

Generator rotor winding inter-turn short circuit is a common fault in power system. When this kind of fault occurs, the rotor current increases and the winding temperature increases, which limits the output of the generator and affects the normal operation of the generator in severe cases. Inter-turn short circuit is usually determined by measuring the AC impedance and power loss of the generator rotor winding. The traditional measurement method is to use multiple test instruments and meters to measure after on-site assembly. This method, which requires a lot of test instruments and meters to form a measurement system, has the disadvantages of heavy test equipment, time-consuming and laborious, cumbersome data sorting and low measurement accuracy.

With the continuous development of digital signal processing technology, new microprocessors and algorithms are constantly emerging, according to which we developed a generator rotor AC impedance tester based on digital signal processor. The instrument takes the digital signal processing system as the hardware platform, gives full play to the computing power of the digital signal processor, makes the calculation speed and calculation accuracy of the instrument greatly improved, and provides a guarantee for the normal operation of the power system.

　　

2. features

• Automatic (manual) acquisition, measurement, display, storage, printing of all measurement parameters and AC impedance characteristic curve;

• Real-time display of measurement data and AC impedance characteristic curve, easy to store and print;

• Using 320 × 240 large-screen LCD display, Chinese menu prompts, easy to operate;

Built-in large-capacity non-volatile memory: can store 200 sets of measurement data and curves;

Built-in high-precision real-time clock function: date and time calibration;

• With high-speed micro thermal printer: can print measurement and historical data;

• No-load, short-circuit test of single-phase transformer and volt-ampere characteristic test of voltage (current) transformer and arc suppression coil;

• It has perfect over-voltage and over-current protection function, in which the over-voltage and over-current protection value is automatically adjusted according to the setting of test parameters, which is simple and can ensure the safety of the tested equipment.
2.Technical parameters：

Measurement range impedance: 0 ~ 999.9Ω

Voltage: 0~600V

Current: 0 ~ 120A

Power: 0 ~ 72kW

Speed: 0~3600rpm

Frequency: 45~65Hz

Accuracy voltage, current, speed, frequency: 0.2

Impedance: 0.5 level

Power: 0.5 level (cosφ>0.5), 1.0 level (0.5 ≥cosφ ≥ 0.2)

Dimensions 345mm × 295mm × 175mm

Instrument weight 5kg
Attachment Download:ZFZK-502B generator rotor AC impedance tester user manual.

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Wuhan Zhongke Xinyi Electric Power Technology Co., Ltd.

Brand: ZECERS/Zhongke Xinyi

Wuhan Zhongke Xinyi Electric Power Technology Co., Ltd. (brand: ZECERS/Zhongke Xinyi) is a high-tech enterprise focusing on the design, development, manufacturing and technical services of high-voltage test equipment and secondary test equipment for power systems.

The company is located in the Optics Valley New District of the High-tech Development Zone, with 5600 square meters of modern standard production plants and perfect manufacturing, processing and testing equipment. The company has a strong research and development, solid technology, excellent quality team, and Wuhan universities have close ties and technical cooperation, laying a solid foundation for technological innovation. The company has successively obtained ISO9001:2015 international quality management system certification and high-tech enterprise certification. Based on domestic power system testing, the company explores high-tech cutting-edge information technology, and is committed to the research of various new power technologies and the formulation and promotion of relevant standardization.

The company adheres to the business philosophy of "quality-oriented, pioneering and innovative, honest and pragmatic, and win-win cooperation", regards product quality and independent innovation as the core competitiveness of the enterprise, and continuously strives for the standardization, humanization, intelligence, refinement and diversification of products. The products cover all aspects of power testing, and widely serve the State Grid, South Grid, Inner Mongolia Power Grid and other power systems, major power generation groups, photovoltaic wind power new energy enterprises, railway petrochemical enterprises, metallurgical industrial and mining enterprises, electrical complete sets of enterprises, transmission, transformation and distribution engineering construction units, scientific research institutions, third-party testing institutions and other enterprises and institutions. The power testing equipment produced by the company provides a reliable data basis for the safe operation of the power system. The company's products have covered all provinces and cities in the country, and have been exported to Laos, Myanmar, Cambodia, Vietnam, Pakistan, East Africa, Russia, Malaysia, Brazil, Europe and other countries, and have been widely recognized.

"Technology to create the future, innovation to change the present", would like our professional to provide you with satisfactory products and services and create more value.

2014 Year

Company establishment

3060 Wan yuan

Registered capital

5600 ㎡

Production plant

8372 +

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