Leader Harvest is China variable frequency drive manufacturer, offer VFD, which is known as AC driver and medium voltage frequency inverter. Variable frequency drive is for changing frequency of alternating currents of electrical motors. Our VFD systems are available in different voltage and current ratings. Voltage range of 3.3kV, 4.16kV, 6.6kV, 10kV VFD is available. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. http://www.mediumvoltagedrive.com frequency drive, VFD, inverter, frequency inverter, variable frequency drive, frequency converter, variable frequency inverter, AC drive, middle voltage frequency inverter, high voltage drive, China VFD manufacturer Rss Generator By etw-China trading platform http://www.mediumvoltagedrive.com/products.html Leader Harvest is China variable frequency drive VFD manufacturer, variable frequency drive is also called VFD, used for controlling frequency of electrical power, we have adjustable frequency drives, variable-speed drives, AC drives and inverter drives for power generation application. Multi-level voltage source VFD with technology of cascade-connected power cells can directly output medium voltage, we make effort to be leading VFD manufacturer around world, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/3-VFD-structure.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD can usually be applied in these fields: power generation, metals, cement, oil, gas, mining, and water. Variable frequency drive is for changing frequency of alternating currents of electrical motors. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/quality.html Leader Harvest is China variable frequency drive manufacturer, we make VFD according to principle of good quality, company-wide assurance, keep improving and strive for excellence. As large energy saving drive, VFD usually applies in important site, stable and reliable for users. We have producing factory and assemble factory, department of purchase, manufacture plan, quality management and technology process, we are here to make effort to be leading VFD manufacturer in the world, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/company-introduction.html Leader Harvest is China variable frequency drive manufacturer. We are a high-tech enterprise with annual growth rate of more than 50%. The headquarter locates in Zhongguancun Science Technology Park with area of 40000m2. There are 700 employees and about 500 sets of advanced producing equipments and detecting instruments. Owning itself intellectual property, we have got certificates of ISO9001, ISO14001 and China Top Brand. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/6-channel.html Leader Harvest is China variable frequency drive manufacturer. The distribution marketing network covers more than 30 provinces, cities, and areas in China. Besides domestic market, we have exported our products to many international markets including Europe, Asia, Africa ,Oceania, South America and North America. International Marketing Department Tel: 86-10-6976 4859. Fax: 86-10-6976 5220. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/contact.html Leader Harvest is China frequency drive VFD manufacturer, contact us if you are in need of medium voltage and high voltage VFDs, voltage from 3kV to 10kV, we are in Changping District, Beijing, China, make effort to be leading VFD manufacturer in the world, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/2-HARSVERT-converter-1.html Leader Harvest is China variable frequency drive manufacturer. HARSVERT-A series VFD is a masterpiece of outstanding performance and high reliability, which is for energy-saving application of the normal motors of fans, pumps, compressors, mills, conveyors and lifts. We can also provide a full range of AC drivers, such as 3.3kV series VFD, 10kV series variable frequency drive, 11kV medium voltage frequency converter, with high efficiency, reliable and safe use, energy saving and environmental protection. Our VFDs are applied to electrical power, energy, mining, sewage treatment industries, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/2-AC-drive-2.html Leader Harvest is China variable frequency drive manufacturer. Characteristics of VFD in vector control: large start torque; fast response of dynamic torque; suitable to the heavy load. Start torque can reach the rated torque of 150% or more as per the requirement of the user. It is applicable to the following cases: large torque at low speed: Lift, Mill, Conveyor, Kiln; Start at heavy load; Large load fluctuation with higher precision of speed-adjusting: Rolling mill, Wind tunnel, Compressor; Power grid with poor quality, such as the unstable voltage of power grid. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/2-HARSVERT-inverter-3.html Leader Harvest is China variable frequency drive manufacturer. HARSVERT-S series VFD supplies perfect speed-adjustment for the synchronous motor and accurate excitation current control for the exciter. It improves the reliability and reduces the cost of the retrofit by using VFD on synchronous motor. Application: Compressor, Mill, Conveyor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/2-speed-drive-4.html Leader Harvest is China variable frequency drive manufacturer. HARSVERT-VS series VFD can operate smoothly at vector control mode for the speed-adjustment of synchronous motor. It is used for the cases of starting frequently with high precision of speed-adjustment, such as rolling mill. We can provide full series of variable frequency drives, such as 3.3kV series VFD, 4.16kV series VFD, 10kV series VFD. As a result of high efficiency, soft start of electric motor and reliable use, our VFDs are used in petroleum, cement and mining industries. We also provide A series, FVS series VFD, VA series, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/2-frequency-converter-5.html Leader Harvest is China variable frequency drive manufacturer. HARSVERT -FVA series VFD are applicable to start the synchronous motor with the load, big torque fluctuation, high precision of speed-adjustment, frequent acceleration and deceleration, or require the regenerative energy, such as: regenerative energy: Lift, Rolling mill. Big load fluctuation: Compressor, Wind tunnel. Large start torque: Lift, Rolling mill, Mixer, Conveyor. We provide FVS series VFD, FVA series, HARSVERT A series and HARSVERT VS series VFDs, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/2-frequency-inverter-6.html Leader Harvest is China variable frequency drive manufacturer. HARSVERT -FVA series VFD are applicable to start the asynchronous motor with the load, big torque fluctuation, high precision of speed-adjustment, frequent acceleration and deceleration, or require the regenerative energy, such as: Regenerative energy: Lift, Rolling mill. Big load fluctuation: Compressor, Wind tunnel. Large start torque: Lift, Rolling mill, Mixer, Conveyor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/1-variable-frequency-drive.html Leader Harvest is China variable frequency drive manufacturer. Multi-level voltage source VFD with the technology of cascade-connected power cells can directly output medium voltage. VFD is composed of phase-shifting transformer, power cells and controller. Variable frequency drive is for changing frequency of alternating currents of electrical motors. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/5-user-management.html Leader Harvest is China variable frequency drive manufacturer. At normal start status, VFD will start and operate at given frequency in open loop mode, or operate at the expected value of the controlled object in closed loop mode. Variable frequency drive is for changing frequency of alternating currents of electrical motors. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/2-technical-data.html Leader Harvest is China variable frequency drive manufacturer. 3KV series VFD: Input frequency: 45Hz~55Hz. Input power factor: 0.95. Efficiency: 0.96 with rated load. Output frequency: 0.5Hz~120Hz. Frequency resolution: 0.01Hz. Overload capacity: 120% 1 min, 150% immediately. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/certificate.html Leader Harvest is China variable frequency drive manufacturer, we got technique appraisal certificate and patent certificate for medium voltage VFD, here are inspection report for 6KV and 10KV VFD. Our medium voltage frequency converter and VFD is of high efficiency, reliable use and energy saving characters, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/7-variable-frequency-inverter.html Leader Harvest is China variable frequency drive manufacturer. HARSVERT-A series VVVF is a masterpiece of outstanding performance and high reliability, which is used for the energy-saving application of the normal motors of fans, pumps, compressors, mills, conveyors and lifts. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-Power-1.html Leader Harvest is China variable frequency drive manufacturer. Our medium voltage variable frequency drive is applied in power plant, frequency control is widely used for its superiority in energy-saving, adjustment precision and adjustment range. Our medium voltage VFD is also applied in condenser pump, coal-fired power plant and thermal power plant, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-mining-2.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage Variable Frequency Drive application in gas drainage system of coal mine. Reform with Variable Frequency Drive in Xingcun Coal Mining. MV Variable Frequency Drive application in Xinyuliangshan Ore Mill. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-meta-3.html Leader Harvest is China variable frequency drive manufacturer. Application of Variable Frequency Drive in #4 Duster Fan in Steel Plant. Medium voltage Variable Frequency Drive system design in coal gas blast blower of coke oven. Application of Medium Voltage Variable Frequency Drive in Henan Jiyuan Steel Company. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application--cement-4.html Leader Harvest is China variable frequency drive manufacturer. Our middle voltage VFD is applied in cement plant, high-temperature fan, circulating fan and dust collecting fan in the grinding plant. They are thyristor cascade control, DC adjustment, electric magnet sliding differential speed control, hydraulic coupling control and pole-changing control for motor energy saving analysis, we make effort to be leading VFD manufacturer in the world, welcome. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/sitemap.html Leader Harvest is China variable frequency drive manufacturer, offer medium voltage variable frequency drive for electric power, metallurgy, petroleum, petrochemistry, cement and mining industry. We have maximum 10KV AC frequency drive for controlling frequency of electrical power, make effort to be leading VFD manufacturer in the world, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-water-5.html Leader Harvest is China variable frequency drive manufacturer. Our variable frequency drive is applied in booster pump station, water purifying plant, energy saving pump station and water supply system. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-oil-6.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage variable frequency drive applied in centrifugal compressor, water injection system of oilfield and oil pump sets in oilfields. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-motor-7.html Leader Harvest is China variable frequency drive manufacturer. Variable frequency operation of brushless synchronous motor. Medium voltage VFD application on synchronous motor. Leader, Harvest VFD application on synchronous motor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-power-plant.html Leader Harvest is China variable frequency drive manufacturer. In thermal power plant, there are a large number of pumps and fans, and VFD is used in technology reform for energy saving. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-power-plant-1.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage variable frequency drive application in Yunfu Power Plant. VFD saves much energy, especially in low load. VFD realizes soft start, prolongs motor lifetime, eliminates surge, reduces wear and tear. VFDs have been running stably since they put into service. The reconstruction is very successful. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-id-fans.html Leader Harvest is China variable frequency drive manufacturer. MV VFD application in ID fan of Danhe Power Generation Co., Ltd. Energy saving effect of VFD is obvious, especially in low load. With VFD, motor realizes soft-start. Damper is full open, which reduces vibration and damage. VFD will be widely used for more and more power plants as its excellent energy saving effect, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-condenser-pump.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium-voltage VFD on condenser pump. We provide a comprehensive and effective technical support services for the implementation of the project to achieve energy-saving. Leader Harvest VFD optimizes the system operation process, protects system security, improves energy efficiency and other economic benefits, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-of-mv-vfd.html Leader Harvest is China variable frequency drive manufacturer. Feasibility of VFD technology in thermal power plant. Choose MV VFD for power plant. MV VFD application in power plant. MV VFD provides a feasible operation mode for auxiliary equipments in power plant. Its excellent performance and energy saving effect make its widely application in power plant. User should consider reliability, economy factor, applicability and environment protection when choose a VFD. VFD is an important way to reduce cost and enhance competitive power for plant, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-gas-drainage.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in gas drainage system of coal mine. In gas draining system of Chongqing First Coal Mine, medium voltage VFD controls gas amount of coal face and air return system effectively. It ensures safe production and saves considerable energy. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/reform-coal-mining.html Leader Harvest is China variable frequency drive manufacturer. Reform with VFD in Xingcun Coal Mining. VFD implements soft start and saves energy. Speed can be controlled as per air flow demand. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-ore-mill.html Leader Harvest is China variable frequency drive manufacturer. MV VFD application in Xinyuliangshan Ore Mill. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/reform-axial-flow-fan.html Leader Harvest is China variable frequency drive manufacturer. Reform with VFD in contra-rotating axial-flow fan in mine. VFD realizes soft start/stop and saves energy. It adjusts speed according to air flow demand in lane easily with ideal effect. China has many coal mines, medium voltage VFD application must be widely in this field, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-id-fan.html Leader Harvest is China variable frequency drive manufacturer. VFD application in ID fan of flue gas purification system. VFD application in purification system optimizes the system performance, improves purification effect, reduces power consumption greatly. According to related statistic, flue gas consumption reduces 19m3/t. Total power consumption reduces 137000kW.h per month, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-hoisting-machine.html Leader Harvest is China variable frequency drive manufacturer. HARSVERT-FVA series VFD application in hoisting machine of coal mine. Successful operation performance of two HARSVERT-FVA VFDs indicates that VFD heightens stability and comfortability, lowers cable swing and start-up current, improves reliability, safety and efficiency, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-pumps.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium-voltage VFD in Large Medium Pumps for Heavy Medium Coal Selecting Technology. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-duster-fan.html Leader Harvest is China variable frequency drive manufacturer. Application of VFD in #4 Duster Fan in Steel Plant. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-system-design.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD system design in coal gas blast blower of coke oven. Controlling blast blower by medium voltage VFD maintains constant pressure of main pipe. It improves coking furnace production and site environment, meets technics requirement completely, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-in-dusting-fans.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium Voltage VFD in Henan Jiyuan Steel Company. Medium voltage VFD connects between medium voltage power source and motor. It is replacing other speed adjustment drives and entering into kinds of industries rapidly as its safety and reliability. Its main purpose is to reduce equipment speed. It heightens automatization level, meets requirement of production technics as well as energy saving. VFD reduces maintenance cost greatly and brings considerable economic benefits for company. VFD plays an important role in energy saving of motor system, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/motor-energy-saving.html Leader Harvest is China variable frequency drive manufacturer. Motor energy saving analysis in cement plant. VFD applications in cement plants are more than above sites, such as ball milling, unload rolling, feeding machine, cooling machine and all equipments which need speed adjustment. Practise proves that VFD reform has obvious energy saving effect. It is an ideal speed adjustment mode. VFD heightens equipment efficiency, meets technics requirement, reduces maintenance labour and cost a lot. DC reactor inside VFD improves power factor, saving capacity of power grid, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-fan.html Leader Harvest is China variable frequency drive manufacturer. Vector control VFD application in high-temperature fan. Technology of variable frequency can reduce consumption and heighten economic benefit. The practice proves that VFD is necessary, feasible in cement plant and has considerable economic benefit. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-cement-plant.html Leader Harvest is China variable frequency drive manufacturer. Application of Harsvert VFD in Zibo Cement Plant. Reliable performance and ideal power saving effect of medium voltage VFD have created tremendous economic benefits and social benefits for the company, so it is worthy to be recommended and applied in industry, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-pump-station.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in booster pump station. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-water-purifying-plant.html Leader Harvest is China variable frequency drive manufacturer. Variable frequency drive design, operation in water purifying plant. Controlling pumps by VFD improves production and site environment, and meet technics requirement completely. Integration of PLC control, Profibus technology and medium voltage VFD leads to high automatization level, stable operation, easy operation and considerable energy saving. Successful application of medium voltage VFD in Jilin Third Water Plant has enormous economic value in energy saving, technology innovation and downsize staff for high efficiency, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-waterworks.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in Huludao Pingshan Waterworks. Medium voltage VFD will be used in more and more water systems. In addition to its energy saving effect, it can be connected to DCS to constitute a big close loop control system. It makes equipment run reasonably, heightens automatization level and gain considerable social benefit, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-centrifugal-compressor.html Leader Harvest is China medium voltage VFD manufacturer. Medium voltage VFD application in centrifugal compressor. Our VFD systems are available in different voltage and current ratings. Voltage range of 3.3kV, 4.16kV, 6.6kV, 10kV VFD is available. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/mv-starter-aplication.html Leader Harvest is China variable frequency drive manufacturer. Application of variable frequency soft starter exploits new field of Leader Harvest product, makes wide variety of product. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-oilfield.html Leader Harvest is China variable frequency drive manufacturer. Application and Practice of Medium-voltage VFD in Water Injection System of Oilfield. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/operation-of-synchronous-motor.html Leader Harvest is China variable frequency drive manufacturer. Variable frequency operation of brushless synchronous motor. Brushless synchronous motors need to reconstruct with variable frequency technology. This article states principle, structure and operation mode of brushless synchronous motor, analyzes problems during synchronizing, adjusting and excitation input, puts forward variable frequency operation of brushless synchronous motor, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-synchronous-motor.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application on synchronous motor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-motor.html Leader Harvest is China variable frequency drive manufacturer. Leader, Harvest VFD application on synchronous motor. Medium voltage VFD produced by Leader Harvest made commissioning successfully and it put into preparation to drive CO2 compressor on 18 th April, 2006. CO2 compressor is change-torque load. It is known that synchronous motor driving change-load is difficult to realize soft start and adjust speed, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/company-introduction.html Leader Harvest is China frequency drive manufacturer, we are capable of manufacturing of medium voltage variable frequency drives, VFD voltage can be of 3 kV, 6.6 kV and 10KV. We have various variable frequency drive for synchronous motors. We established complete set of pre-sales, in-sales and after-sales service to provide reliable VFD to customers, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/energy-saving.html Leader Harvest is China VFD manufacturer, energy can be saved by variable frequency drive and wind power. At present, people are worried about lack of energy sources, it will restrict economy growth, so energy saving and emission reduction are seriously concerned, and wind power is developed quickly in recent years as a clean and renewable energy source. Leader Harvest is here to make effort to be leading VFD manufacturer in the world, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/about-certificate.html Leader Harvest is China variable frequency drive manufacturer. We have got certificates of ISO9001, ISO14001 and China Top Brand. Our VFD systems are available in different voltage and current ratings. Voltage range of 3.3kV, 4.16kV, 6.6kV, 10kV VFD is available. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/development-history.html Leader Harvest is China frequency drive VFD manufacturer, new plant is put into service in 2009, variable frequency drive sales order broke through 3000 sets. To forward, new manufacturer base equipped with advanced devices and instruments in China were put into service in 2004. We make effort to be leading VFD manufacturer in the world, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/6-1-project-cooperation.html Leader Harvest is China variable frequency drive manufacturer. Project cooperation: Agent applying and related requirements. Applicant should fill in agent applying table, and present related business certificates. Business scope: Equipment of power device, such as motor, automatic drive. Experience in automation industry. Requirements: Registered capital is not less than USD 2 million. With completed organization structure and professional sale and technique team. With excellent business credit and financial system. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-id-fan.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application on ID fan of 300MW in coal-fired power plant. Adopting medium voltage variable frequency technology reforms equipment of high power consumption, which reduces power consumption and coal consumption, also plays active part on equipments safety and reliable operation, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-generator-unit.html Leader Harvest is China variable frequency drive manufacturer. Application of VFD in 300MW generator unit of thermal power plant. VFD widely application in power plants is the trend in future. It saves energy significantly, also has good adjustment ability. VFD prolongs the lifespan of fans and motors. With the development of high-technology, cost-decreasing, and new design, it simplifies the structure of VFD, reduces components and makes VFD more reliable, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/energy-saving-reform.html Leader Harvest is China variable frequency drive manufacturer. Energy saving reform with VFD on condenser pump. VFD has been running stably since it put into service. After reform with VFD, energy saving effect is very good. It solves problems of big vibration, big throttle loss, control lag, serious intercoupling, uncertainty of control object. Interim adjustment scheme controls variable frequency pump and controls deareator water level. The investment cost can be recovered within 2 years, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/mv-inverter-application-comparison.html Leader Harvest is China variable frequency drive manufacturer. The application comparison of two kinds of Medium voltage inverter. VFD could save much energy and bring enormous benefits. From the application, no matter Leader Harvest VFD or Robicon VFD, the applications are very successful. Comparatively speaking, Leader Harvest VFD is better than Robicon VFD in economy as well as reliability. Low price and all-round service are important factors which absorb power plant, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-power-plant.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in Xigu Power Plant. Medium voltage VFD has advantages over other speed adjustment modes. It is main control method of energy saving in big power plant. VFD reconstruction promotes economy benefit and wins user acceptance as its high reliability and flexible adjustment, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-in-fan.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage variable frequency tehcnology application in 4# fan of Jinxi Oil Industry Company. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-reconstruction-case.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD reconstruction case in thermal. VFD has good performance and high reliability. Energy saving is obvious. It meets requirement of continuous production, reaches purpose of energy saving and technics improving, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-thermal-power-plant.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium-voltage VFD in Thermal Power Plant. This application proves that HARSVERT-A Medium-voltage VFD has good performance, high reliability. Its energy-saving effect is better than any other form of speed control mode, especially in the low load, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/reform-water-feeding-system.html Leader Harvest is China variable frequency drive manufacturer. Variable frequency reform of water feeding system in Yangpu Power Plant. Daily power consumption reduces 15000kWh. Energy saving rate is 60%. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-in-condenser-pump.html Leader Harvest is China variable frequency drive manufacturer. Variable frequency drive application in condenser pump. This paper introduced 11# unit condenser pump reform with VFD, states its considerable energy-saving and reliable effect. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-deslagging-system.html Leader Harvest is China variable frequency drive manufacturer. VFD application in deslagging system. Our VFD systems are available in different voltage and current ratings. Voltage range of 3.3kV, 4.16kV, 6.6kV, 10kV VFD is available. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-mill-fan.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application on 100MW mill fan. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-circulating-flow-bed.html Leader Harvest is China medium voltage VFD manufacturer. Medium voltage VFD application in circulating flow bed of power generating plant. Medium voltage VFD has evident energy saving effect, especially in low load. VFD implements soft start, prolonging lifetime of motor. Damper of ID fan is full open, which reduces vibration and wear. It will apply in more and more power plants as its perfect energy saving effect. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-turbine-generator.html Leader Harvest is China variable frequency drive manufacturer. MV VFD application in 300MW turbine generator. Variable frequency drive can make equipment in best operation and heighten efficiency, achieving energy saving. Variable frequency technology has been used in pump and fan. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-power-plant-1.html Leader Harvest is China variable frequency drive manufacturer. MV VFD application in Huayingshan Power Plant. Variable frequency technology on auxiliary equipments, such as fan and pump, realizes energy saving, also enhances system safety. VFD will have a widely application field in power plants, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-condenser-pump-1.html Leader Harvest is China variable frequency drive manufacturer. MV VFD application in condenser pump of Luanhe Power Plant. VFD will have a widely application field in power plants. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-condenser-pump-2.html Leader Harvest is China variable frequency drive manufacturer. MV VFD application in condenser pump of 600MW machinery. Variable frequency technology is a new drive technology which adopts advanced electronic technique, computer control technique and communication technique. It goes ahead of any other speed adjusting methods. VFD is bound to be widely used in more and more plants in future. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-power-generating.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage variable frequency technology application in power generating. Leader Harvest VFD meets user requirement as its advanced technology and stable performance. Cooling method reduces heat and cost greatly. System realizes soft start through VFD. VFD application in our plant indicates the feasibility and good economy effect of VFD. We are going to extend variable frequency technology in reconstruction in future and make progress for energy saving. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application.html Leader Harvest is China variable frequency drive manufacturer. VFD application in Jinxi Petrol Chemical Industry Co., Ltd. The reform was one of the most important projects in our corporation in 2006. It is the practical measures that our management changes from extensive form to conservative-minded form. It is embodiment of managers' forward-looking awareness. The benefits from the reform inspires the staff enthusiasm, and makes us know the importance of energy saving. The perfect economic performance indicates the great potential of energy-saving, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-thermal-power-plant.html Leader Harvest is China variable frequency drive manufacturer. VFD application in Dalian Developing Zone Thermal Power Plant. VFD has been running stably and greatly. It improves the site operating state, and reduces the working strength of the operators. Most of all, the station service labour decreases obviously. We do believe more and more VFDs would be used in thermal- power corporations for building a more conservation-minded society, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/study-water-feeding-system.html Leader Harvest is China variable frequency drive manufacturer. The feasibility study of medium voltage converter application in water feeding system. Reform of the two pumps by VFD is feasible. It could achieve the purpose of reducing the rate of plant power consumption, also good for system security, reliability, maintenance and other aspects. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-condensing-pump.html Leader Harvest is China VFD manufacturer. Application of VFD on condensing pump in 300MW generator units. The reform is safe and reliable. It reduces the vibration of condensing water pipeline and temperature of motor coil. The reform cancels throttle adjustment. Energy-saving for the condensing pump is obvious. Personnel must take care in checking, especially for maintenance and check of VFD, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/energy-saving-analysis.html Leader Harvest is China variable frequency drive manufacturer. Power plant should realize its society responsibility, take energy saving and emission reduction as internal dynamic of sustainable healthy development. Plant should put energy saving into agenda, promote energy saving by new material, new technics and technology development. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/technology-id-fan-system.html Leader Harvest is China variable frequency drive manufacturer. VFD coordination control technology in ID fan system. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-power-plant.html Leader Harvest is China variable frequency drive manufacturer. HARSVERT—A VFD saves energy for Hanfeng Power Plant. This VFD reconstruction is the first application on generator of 660MW. It provides experience for other generators 600MW upward, also extends wide prospect for equipments of 2500kW upward. HARSVERT VFD is regarded as first choice product of plant as it high cost performance, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-condenser-pump-3.html Leader Harvest is China variable frequency drive manufacturer. Application of HARSVERT-A model Medium Voltage VFD in 600MW ultra-supercritical condenser pump. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/technology-on-id-fan.html Leader Harvest is China variable frequency drive manufacturer. Variable Frequency Control Technology on ID Fan in 300MW Generator Unit. VFR method can satisfy the output need of generator unit. Its performance is stable and reliable, the self-regulation quality has been improved clearly, especially for the response time. The big executive inherent dead zone shortcoming of SDR method is basically eliminated. Operation efficiency is highly heightened. SDR method is about 55% while VFR method is 75%-80% in different generator unit loads. The fan runs economically with excellent adjusting performance and remarkable energy saving effect in VFR method. The damper is full open and the energy consumption on damper is saved, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-thermal-power-plant-1.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in Liaocheng Thermal Power Plant. It is feasible to reconstruct with VFD for two pumps. Changing valve control to variable speed adjustment can reach purpose of lowering power consumption rate. VFD also brings benefits in terms of safety, reliability and equipment maintenance. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-in-id-fan.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in ID fan of power plant. Making reconstruction with medium voltage variable frequency speed adjustment for equipments, such as ID fan, FD fan, feed pump and circulating pump, lowers power consumption and coal consumption, also heightens safety and reliability, reduces system faults, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-in-fans.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium Voltage Variable Frequency Drives in Fans in Thermal Power Plants. Medium voltage VFDs have obvious energy savings effect. By using Medium voltage VFD, soft starting for motors may be performed and the motor life may be extended. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-condenser-pumps.html Leader Harvest is China variable frequency drive manufacturer. Application of VFD in Condenser Pumps in Thermal Power Plant. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-cycling-pumps.html Leader Harvest is China variable frequency drive manufacturer. Application of VFD in Cycling Pumps in Thermal Power Plant. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-in-dusting-fan.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage Variable Frequency Drive application in dusting fan of Hangzhou Steel Plant. Medium voltage VFD plays an important and positive role in heightening efficiency, reducing cost and ensuring fan safe operation and automatization level for Hangzhou Steel Iron Group. This can be looked upon high-tech project of good applicability and fast repay. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-alum-extracting-plant.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in Pangang Alum Extracting Plant. VFDs have been running stably for several months in steel plant. They save lots of energy and heighten work ability of dusting fan, improve environment, heighten efficiency and make contribution for safety and environmental protection. High voltage VFD is indispensable in dustying system and it is worthy to promote in the field. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-blown-converter.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in upper blown converter. Second department of Fushun Xinfugang Steel Refining Company has three sets of 15t oxygen upper blown converter. Variable frequency drive is for changing frequency of alternating currents of electrical motors. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-dusting-fan.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in dusting fan of metal mixter. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-introduction.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in metallurgy. VFD has replaced other speed adjustment modes as its high repay rate, high reliability and high automatization level. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-dusting-fans.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium-voltage VFD in Dusting Fans for the Electric Furnaces of the Forth Steel Making Plant of Daye Special Steel Co., Ltd. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-dusting-system.html Leader Harvest is China variable frequency drive manufacturer. High voltage VFD application in dusting system of arc furnace. We get that VFD application in dusting system not only improves production state but also heightens steel output and lowers power consumption. About 2300000yuan (USD 338235) can be saved every year. It is absolutely correct to use high voltage VFD in dusting system, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-dusting-fan.html Leader Harvest is China variable frequency drive manufacturer. VFD application in dusting fan of Agang Steel Refining Plant. From steel production process, we see high voltage VFD application in each process can gain effect of energy saving and emission reduction, such as coking, sintering, iron refining furnace, steel refining furnace, dusting fan, ventilation fan and pump. With VFD, power consumption of dusting fan is reduced a lot in the plant. Average energy saving rate reaches to 26%. It lowers refining cost and reduces environmental pollution, brings enormous benefits for Agang Steel Plant, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-cooling-water-system.html Leader Harvest is China variable frequency drive manufacturer. VFD application in continuous casting misting cooling water system. Reform with VFD meets design requirement, reduces pipe pressure, improves operation state of continuous casting misting cooling water system. It overcomes problems of high pressure of outlet in direct on line state and serious throttle loss. VFD satisfies requirement of cooling water pressure, heightens efficiency and saves energy. VFD reform protects pump and motor, reduces maintenance cost of pump and motor, prolongs equipments lifetime, lowers production cost, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-blast-furnace.html Leader Harvest is China middle voltage VFD manufacturer. The application of HARVERT-A series VFD in the reform of the de-dust fan for 750 blast furnace of Chongqing Iron Smelting Works is successful. The advance and reliability of this series of VFD has been proved by many industrial applications. Popularization and application of the VFD speed regulation technology for medium voltage high power accessory equipment in various industries may obtain distinctive energy saving effects and also are supported by the national industry policy. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-gasworks.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium Voltage Variable Frequency Drive in Gasworks of Kaiman Aluminum (SANMENXIA) Co., Ltd. Relying on VFD, gas delivery is stabilized, which provides condition for high performance of baking furnace. Erection of VFD enhances the safety situation. Lastly, it plays a very active role for power reduction in producing gas, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-circulating-fan.html Leader Harvest is China variable frequency drive manufacturer. Adjusting speed by VFD is easy and convenient, also saves much energy. It improves system safety and manufacture process. Variable frequency drive is for changing frequency of alternating currents of electrical motors. Our VFD systems are available in different voltage and current ratings. Voltage range of 3.3kV, 4.16kV, 6.6kV, 10kV VFD is available. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-grinding-plant.html Leader Harvest is China variable frequency drive manufacturer. The application of VFD mated with the dust collecting fan in the Grinding Plant. VFD has been running stably since it was installed in May 2005 in production line of 100t/h. It saves lots of power, but also gains considerable economic benefits. It also lowers maintenance labour. Variable frequency technology will be widely used in more and more cement plants, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-cement-plant.html Leader Harvest is China middle voltage VFD manufacturer. Application of Medium Voltage VFD in cement plant. Cement plant made a success at energy-saving and production-improving after reconstruction with VFD. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/vfd-application-fan.html Leader Harvest is China variable frequency drive manufacturer. Power consumption used to drive fans occupies a large proportion for motor, so declining consumption and improving benefits for motor is much of importance. Nowadays high voltage VFD technology is more mature and failure rate is lower. It is an ideal equipment for energy-saving reconstruction in cement plant, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-in-water-plant.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in Cangnan Water Plant and its energy saving analysis. Controlling pumps by VFD improves water supplying, water purifying and site environment. Perfect integration of PLC control, Profibus communication and variable frequency technology realize high automatization level, stable operation, easy control and considerable energy-saving effect. Successful application of VFD in Cangnan Water Plant has high economic value in saving energy, heightening efficiency and innovating technology. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-waterworks.html Leader Harvest is China variable frequency drive manufacturer. Medium voltage VFD application in Jilin Waterworks. After reform with medium voltage VFD, motor runs stably in effective adjustment scope. In contrast with original operation in direct on line state, soft start makes start current smaller. There is no impact on machine. That prolongs equipment lifetime and reduces maintenance cost. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/energy-saving-pump-station.html Leader Harvest is China variable frequency drive manufacturer. Optimize VFD operation Create energy saving pump station. Water plant should select operation mode of pump reasonably according to pipe characteristics in order to reach purpose of energy saving in precondition of satisfying requirement. With VFD, soft start avoids impact on motor insulation and reduces maintenance, saves maintenance cost, prolongs motor lifetime, as well as lowers wear and tear of pipe, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-water-plant.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium Voltage VFD in Hainan Danzhou Water Plant. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-water-plants.html Leader Harvest is China variable frequency drive manufacturer. Application of Domestic Medium-voltage Inverters in Water Plants. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-water-supply-pump.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium Voltage Variable Frequency Drives to Water-supply Pumps in Water Supply Systems. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-water-pumps.html Leader Harvest is China variable frequency drive manufacturer. Study and Application of VFD in Water Pumps. Adjusting the daily operation of the water pump to make the electricity consumption for each ton of water kept in a more economic and reasonable range is the focus for energy saving. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-oil-pump.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium-voltage VFD on Oil Pump Sets in Oilfields. Oil pumps are the main energy consuming equipment in the operation of oil storage tanks. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/power-saving.html Leader Harvest is China variable frequency drive manufacturer. New way of power saving and emission reduction in oil refinery. This paper introduces the research and experience of high voltage VFD application in Yeyan Oil Refinery. Energy saving effect of high voltage VFD is considerable. VFD also improves security and reliability of system. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-circulating-pump.html Leader Harvest is China variable frequency drive manufacturer. High voltage VFD application in technics of desulfuration circulating pump. HARSVERT-A06/040 VFD application in circulating pump of Chuanxibei Gas field is successful. Energy saving effect of VFD is obvious. Valve inlet/outlet opens fully, which reduces throttle loss. VFD is for controlling motors equipped in discharge fan, water pump and air compressor. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-duster-fan-2.html Leader Harvest is China variable frequency drive manufacturer. Application of VFD in #4 Duster Fan in Steel Plant. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-duster-fan-1.html Leader Harvest is China variable frequency drive manufacturer. Application of VFD in #4 Duster Fan in Steel Plant. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/operation-of-synchronous-motor-1.html Leader Harvest is China variable frequency drive manufacturer. Variable frequency operation of brushless synchronous motor. This article states principle, structure and operation mode of brushless synchronous motor, analyzes problems during synchronizing, adjusting and excitation input, puts forward variable frequency operation of brushless synchronous motor, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-condenser-pump-3a.html Leader Harvest is China variable frequency drive manufacturer. Application of HARSVERT-A model Medium Voltage VFD in 600MW ultra-supercritical condenser pump. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-cycling-pumps-1.html Leader Harvest is China variable frequency drive manufacturer. Application of VFD in Cycling Pumps in Thermal Power Plant. VFD has saved the energy obviously. After using VFD, soft starting for motors has been performed, motor life has been extended and vibration and wearing of pipes has been reduced. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-water-plants-1.html Leader Harvest is China variable frequency drive manufacturer. Application of Domestic Medium-voltage Inverters in Water Plants. Medium voltage high power VFD has complete functions, advanced performance characteristic, high reliability and is easy to maintenance. It is in the lead in the country and has reached the level of the international products of the same class. Its distinctive features are more suitable for the Chinese situation and it suits to the reform and level rising of water industry, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-water-pumps-1.html Leader Harvest is China variable frequency drive manufacturer. The practice proves that the reform of the water pump set with VFD in the Longhupao Water Plant is successful and has gained obvious economic and social benefits. Medium voltage high power VFD technology is a new technology, which has extensive prospect for application and benefits to the country and people. It has an important realistic meaning for the pump speed regulation and constant-pressure water supply in water supply trade. This type of medium voltage high power VFD will be the first-selected equipment for the energy saving and reform of the water supply trade, welcome. etw-trade platform 05/20/11 AM 05:26:55 http://www.mediumvoltagedrive.com/application-oil-pump-1.html Leader Harvest is China variable frequency drive manufacturer. Application of Medium-voltage VFD on Oil Pump Sets in Oilfields. Medium voltage VFD speed regulation technology for oil pump sets is an effective technical way for energy saving of oil transmission systems. It changes the operating condition regulation with valve throttling into the operating condition regulation with varying speed of oil pumps. It features an easy way to regulate. We provide complete range of medium voltage variable frequency drives, such as HARSVERT VA series, FVS series VFD, as well as pre-sale service, in-sale service and after-sale service, welcome. etw-trade platform 05/20/11 AM 05:26:55