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Special HV Frequency Converters for 10000kVA Synchronous Motors Put

Upon successful operation of special ultra-large capacity frequency converters for synchronous motors in Fujian Xinhai Metallurgical Company Limited and Hebei Xinjin Iron & Steel Co., Ltd., our 2×10000 kVA special frequency converters for synchronous motors were successfully put into operation in one shot in the energy saving renovation project of main exhauster frequency converters on the sintering line of a large iron and steel corporation in Jiangsu Province on September 9.

  

   Special HV Frequency Converters for 10000kVA Synchronous Motors Put

Exterior View of the Sintering Plant of a Large Iron & Steel Corporation

        

Affiliated to CITIC Pacific Special Steel Group, this corporation was founded by CITIC Pacific Ltd. in 1993. Now it has become a key high-tech enterprise in the National Torch Plan, a president company of the Special Steel Enterprises Association of China, the first Chinese Grade 4A enterprise with good national standardization practices, and one of Top 10 model enterprises for energy saving and emission reduction in Jiangsu Province. For its production capacity, the melted iron capacity is 5,000,000 t/a, the smelted special steel 6,000,000 t/a and rolled products 6,000,000 t/a. It has two main exhausters for sintering.

The system control logics of main exhausters for sintering are complex. The frequency converters have to be interconnected with the HV switch cabinet, the star point cabinet of the water-resistance soft starter, the excitation cabinet, the PLC of the central controller and main exhauster control panel, etc. To ensure the user's normal production, the wiring and HV/LV debugging between these two frequency converter cabinets had to be completed within 20 hours after shutdown of main exhausters, which witnessed great difficulties in such renovation and technological guarantee.

To ensure the one-time successful operation of these two devices, various functions actively cooperated with each other and the service and product centers also coordinated actively for appropriate on-site equipment supporting and technological guarantee; the colleagues in the metallurgical trade department actively acted as "Diplomatic Officer" and "Head of Logistics" on the site; as the user coordinated with the excitation cabinet and water-resistance soft starter manufacturers, three parties arrived on the site in advance for communicating relevant technical issues; key technical personnel of the R&D center and the product center arrived for on-site technical guidance; and the engineering department was responsible for civil works and installation.
 

  Special HV Frequency Converters for 10000kVA Synchronous Motors Put

Equipment Installation Site


Several Zhiguang-branded ZINVERT HV frequency converters have safely operated on the site of this corporation previously. It selected Zhiguang's product for this technological renovation project of ultra-large capacity frequency converters for synchronous motors. This reflected its appreciation of Zhiguang's product quality. Such project further strengthened the strategic cooperation between Zhiguang and this corporation. Moreover, it also brought valuable experience to Zhiguang.

  

  Special HV Frequency Converters for 10000kVA Synchronous Motors Put

 

 

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