This is Silicon controlled rectifier widely used for DC 20kA 500V SCR power supply for caustic soda electrolysis plant.
The system is composed of below parts
Three phase oil cooling transformer: include main transformer and voltage regulator with on-load tap changer for voltage regulation at primary. Cooling method: OFWF
SCR rectifier: 6 pulses SCR rectifier, double star circuit, each SCR is series connected with fast-acting fuse to protection SCRs.
Controller system: DSP based self developed micro controller, including SCR trigger, signal sampling and handling , data storage, PID operation, logic control and communication etc.
DC output current measurement unit, high current Hall sensor
High voltage switch cabinet
Output remote control by communication bus or input/output signals.
Complete documentation in paper and electronic form
Set of spare parts
Connecting bus between the transformer and rectifier not included
Input power cables and output DC bus bars are not within scope of supply.
A loss of power results in tremendous loss in production, arc furnace industry do not allow any compromise on reliability of the power supply. Protection measures (e.g high voltage absorbing circuit) adopted to protect components in case of power shortage.
Fully digital control system, anti-jamming, strong ability to resist strong magnetic field, high reliability.
Using high precision current sensor as feedback control to improve the reliability of system operation
Using optical fiber transmission thyristor trigger pulse signal, suppress magnetic-field interference and improve the control system of electromagnetic compatibility to ensure the stable operation of the system.
This set of power system components are all use international famous brands with high quality, make strict inspection to the device, and fully guarantee the reliability of the equipment.
Save energy and increase revenue, electrical energy is a costly and valuable resource and one of the major cost factors. Therefore Green Power has spent years tuning its systems to provide utilities with the highest efficiency and the lowest electrical losses.
Our solution is based on design criteria that all result in energy savings:
− Optimized transformer and power supply design
− Customized selection of semiconductor and power fuse
− Shortest possible transformer-power supply connection
− Custom design to keep current density in power conductors and DC isolators low
High Output Stability, High Control Accuracy
High stability and high accuracy(default <0.5%) ensure high quality electrowinning products.
USA TI company's DSP chip, programmable full digital control system, trigger pulse features are consistent.
Using the military level pulse transformer, Pulse asymmetry degree ≤0.1 °, Pulse leading-edge steepness ≤1uS.
Controller is equipped with communication interface, can be communicate with PLC directly,ensure system response time and system processing precision.
Low Output Ripple
Low ripple(default <5%) .
The optimal transformer adopts 12/18/24/… pulse rectification, through thyristor control angle get lowe ripple with fully conducted condition.
High Power Factor
High power factor reduce reactive power, transformer's capacity and line current.
Thyristor control angle are controlled between 12-25 degrees during system operation, when thyristor control angle is less than 12 degree, the system send tap changer upshift signal; when thyristor control angle is greater than 25 degree, send downshift signal. The signal of upshift and downshift are automatically controlled by power supply or switched manually, to improve power factor and reduce harmonic content.
More than 25 years lifespan, reduce investment.
Reasonable design, high quality parts and materials, excellent craftwork, ensure the high realiability of the power supply.
Intelligent and convenient operation and monitor.
Touch screen control, operation and display.
Convenient forming industrial network, analog signal, RS485, Profibus communication, convenient remote control.
|Max. Output current||20KA|
|Power factor||up to 0.9 at output range|
|power supply output pulse no||6 pulse|
|power supply cooling method:||water cooling|
1000+ power supplies per month capacity
ERP System for Internal Management
Flow line assembly lines
Experienced capable production
Qualified workers team
Strong craftwork ability
Company Technical Capability Introduction
More than 20 years power electronics R&D and engineering experience
Talented technical team, Ph.D degree
Experience in industrial applications more than 20 years, have rich experience of both technical design and onsite service.
Mutual R&D with universities
Patent and Software Copyright certification
Self developed DSP(USA TI company's chip) digital controller
Self developed and designed products
Products design meet UL, CE , CSA and etc. standards
Self Developed DSP Controller
1 year warranty period. The guarantee covers defects in design, materials and manufacturing.
If a fault happens in power supply, feedback the fault phenomenon and pictures, we give troubleshooting advice in most quick time.
If it is within warranty period, we provide free spare parts and ship to you by DHL, Fedex to door at most quick time.
uEfficient response, reply email within 1 hours during day time(7:00am.-11:00pm UTC+8)
u16 hours Skype online(7:00am.-11:00pm UTC+8)
u16 hours mobile online(7:00am.-11:00pm UTC+8)
uGo to side if necessary
Packaging and Shipping
Plywood packing, suitable for export and import, strong for long distance transportation.
Looking for 20ka 500v scr power supply for caustic soda electrolysis? Green Power Technology is one of the professional manufacturers and suppliers. We have been dedicated to this field for over 20 years and already exported products to India, USA, Germany, etc. Equipped with a productive factory, we warmly welcome you to buy our high quality products made in China at competitive price or try our customized service.