Dc Switching Power Supply For Sapphire Al2o3 Single Crystal Furnace - China

I.

Product Introduction

DC switching power supply for sapphire ( Al2O3) single- crystal furnace is a DC switching power supply which is specially designed for single- crystal furnaces adopting Czochralski & Kyropoulos method in the growing of sapphire, as a DC voltage- regulating control power supply, it adopts DSP and CPLD as the control core, IGBT as the power inverting device and a high- frequency ultracrystalline transformer as the load- matching transformer.

Adopting Schottky diode full- wave rectification, it realizes continuously adjustable output power by the phase controlled regulation way.

In the entire inverting work process, by adopting high- precision power closed- loop control and LCC quasi- resonant mode, it realizes IGBT soft switching and reduces the switching losses of IGBT as well as the electromagnetic emission and conducted interference generated by the power supply to the outside world, what’s more, its multiple given signal selection functions and isolated conversion & output of output DC voltage, current and power facilitate the remote monitoring of PLC and host computer.

For the power supply, the conversion efficiency is higher than 0.92, the power factor is more than 0.97, the total harmonic wave of current is less than 13% and the direct- current output frequency is 50 KHz, with smooth direct current, it reduces the electromagnetic disturbance to the silicon liquid level, so it is really a new generation of ideal power supply substituting for SCR bridge rectification and double reverse- stars type rectification power supply.

II.

Performance Indexes

　 　 1 - It adopts cabinet- type integrated design.

2 - It adopts IGBT as the power inverting device with the inverting work frequency of 25KHz and ultracrystalline alloy transformer and it is characterized by small size, light weight, low losses, low cost and no noise within the audibility range.

3 - With high- precision AD conversion, the constant power precision is higher than 1‰.

4 - It has phase- deficient, overcurrent, overheating, cooling water fault protection and inverting fault protection functions as well as fault self- diagnosis function.

5 - It has soft start and soft turn- off functions which reduce the shock to the load and power grid.

6 - It is equipped with a LED numeral display tube, which is convenient for setting various functional parameters and displaying electrical parameters.

7 - It has an automatic current- limiting function, when the output current is equal to or greater than 1.1 times of the rated current, the current will be limited.

8 - Isolated conversion & output standard signals of output voltage, current and power.

9 - PF≥ 0.97, THDI≤ 13% and η ≥ 0.92.

10 - With RS485 communication interface and MODEBUS communication protocol, it can communicate with PLC and the host computer, which is convenient for remote monitoring.

Company Contact:

• Posted By: Jiangsu Eastone Technology Co.,Ltd.

• Phone: 86051258105999

• Address: Province Industrial Zone(South),Zhangjiagang City,, Zhangjiagang , China

• Email:

• Website: http://www.zjgst.com

• Business Description: Jiangsu Eastone Technology Co., Ltd. Is a high and new tech enterprise in
  
  research and production of green and effective power supply, which
  
  undertook national and provincial torch projects for several times and
  
  obtained multiterms national innovation funds.
  
  Our products have high
  
  power switch power supply, PWM AC voltage regulator, PWM DC front power
  
  supply, all solid intermeditate frequency and high frequency electric
  
  source, and intelligent thyristor Ac voltage regulator, hich are used as
  
  heating and smelting power for new energy and new material industry.
  
  Just like the numerous enterprises which are involved in global economic integration, Eastone is always making efforts in searching the development road, we have improved and exceeded a lot.
  
  Eastone people who are hardworking , intelligent , open minded and sincere are warmly looking forward to advancing and cooperation with all walks of life relying on the innovation spirit of brave, intelligent, heightened awareness and development, so as to provide the most professional and superior products and services and promote the green power industry.
  
  Company fully implement ISO9001 international quality management system, always seeking "attention to market demand, technical innovation, strengthen scientific management, abide by the pledge, the pursuit of excellence, and create the industry name brand" quality.
  
  Pay close attention to market trends and industry trends, understand customer needs, the use of advanced technology, materials, technology, timely development of high tech new products, constantly updated upgrade products to meet the needs of social development, for walking in the front of peers; relying on science the management of the enterprise management level and product quality is improving, with first class products, low prices, high quality service win the trust of customers, customer satisfaction as the survival of the enterprise would have achieve our commitment to customers.
  
  Our aim is to enhance customer satisfaction, enhance corporate image and achieve quality objectives, and create a brand industry to achieve higher business goals.