1000A400V E-coating SCR(Thyristor) Power Supply

1000A400V-1 1000A400V-2

Application:

1000A400V E-coating SCR(Thyristor) Power Supply, (hereinafter referred to as electrophoretic rectifier) is mainly used in automobile, motorcycle, household appliances, metal shell and other electrophoretic coating production lines as well as in similar technical requirements of rectifying power supply.

The Green Power rectifier controller integrates the working power supply, synchronization signal, pulse triggering, feedback loop, alarm and display module in the system. Under the condition of maintaining the original function, not only the hardware reduces the failure rate, but also effectively reduces the control system. Fault repair time, it is also easy to achieve dual system mutual standby.

Rectifier Technical Parameters:

Ø Rated Output current:1000A

Ø Rated output voltage:400V

Ø Output voltage range: 0%-100%

Ø Output current range: 0-100%

Ø Whole system efficiency:≥95% at rated load;

Ø Constant current accuracy: ≤±1%;

Ø Constant voltage accuracy: ≤±1%;

Ø Power factor: 0.92, if higher requirement, extra facility needed.

Ø THDi: 12% for 12 pulse circuit. If need lower harmonic value, extra facility is needed.

Ø Rectifier circuit: two double star circuit with in-phase counter parallel

Ø Rectifier output pulse no.:12;

Ø Rectifier cooling method:air cooling;

Ø Protection grade: IP32

Ø Control mode: constant current/voltage control

Ø Structure feature: front door and side door could be open for maintenance;

Ø Controller local function: use HMI touch panel, have following functions:

Output DC current display

Output DC voltage display

Output DC power display

RESET push button, black color(if required)

Remote indication lamp, green color

Unit on indicator lamp, green color

Fault indicator lamp, amber or red color

Fault reason display

Output value setting

Constant current/voltage/power mode selection

Local/remote control selection

History data record

Water pressure display

Protection setting

And so on

Advantages of Green Power Rectifier

High Reliability

Although the investment for the DC power supply is minor compared to the total plant cost, a loss of power results in tremendous loss in production, electrowinning industry do not allow any compromise on reliability of the rectifier. 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 imported or domestic products with high quality, make strict inspection to the device, and fully guarantee the reliability of the equipment.

Power Saving

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 rectifier design

− Customized selection of semiconductor and power fuse

− Shortest possible transformer-rectifier 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.

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%) ensure high quality electrowinning products.

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 rectifier or switched manually, to improve power factor and reduce harmonic content.