Shows all kinds of rectifier knowledge in rectifier industry, of course, the mostly usage is in plating machine area.

100A Rectifier

Plating rectifier 100A

Plating rectifier has important position in plating machine area:

Electroplating is an electrolytic process. Needless to say, the performance of its power supply, type, characteristics and other factors will have a significant impact on electro plating process. Especially today with the rapid development of modern electroplating technology, plating rectifier has more important position. Therefore, understanding the impact of electro plating rectifier to plating process is very necessary.

High frequency switching plating rectifier, also called as HF switching power supply:

Which is a new type electro plating machine plating rectifier – high frequency switching power supplies. It combines advantages of silicon rectifier waveform smoothness and silicon controlled rectifiers voltage easy adjustment, while has highest current efficiency (up to 90%), the most smallest volume, and needless to say, it is the most promising plating rectifier. Manufacturing technology has solved the power problem, thousands of amperes power switching plating rectifiers have entered a practical stage of application.

Plating rectifier conversion:

Make the AC grid by EMI anti electromagnetic interference filter, direct rectification, filtering wave, by mean of inverter convert DC voltage into tens or hundreds of KHz square wave frequency, and then by high frequency transformer isolation, reduction voltage, then by high-frequency filter output DC voltage. After sampling, comparison, amplification and control, the drive circuit and power converter controls duty cycle of IGBT, obtained a stable output voltage (or output current).
High-frequency switching plating rectifier control tube in work state, the power consumption loss is small, that efficiency can reach 75% to 90%, small size, light weight, and accuracy and ripple factor are all better than silicon rectifier, in the full output range can achieve production required accuracy. Plating rectifier has self protection ability, can start and stop under loading at will. It’s very easy to connect with the computer, to bright great convenient to automatic production, so has been widely used in PCB electroplating industry.

100A Rectifier

100A Rectifier

Electroplating high-frequency switching plating rectifier main conversion structure has: forward converter, half bridge, full-bridge, etc., have pulse-width modulation (PWM) “hard switch” circuitry,also have popular phase-shift control “soft switch ” power circuit.
Pulse width modulation (PWM) HF switching plating power supply, its operating frequency mostly below 50 KHz, with a voltage or current feedback control.It change the drive voltage pulse width to alter output current by interrupting power flow and adjust the duty cycle method, make the device working in the “hard switching” state, ie forcing conduction (voltage is not zero) or forced shutdown (current is not zero), making the switching power transistor both exist high pressure and large current cross when switch on and off, therefor switching loss less, peak interference strong.

High press peak arose by transformer leakage inductance and high current change rate, not only easy to damage the power tube, also produce significant electromagnetic radiation, that reducing the reliability and power efficiency.Switching power supply plating rectifier frequency has reached audio frequency, through filtering wave to realize low ripple wave output is more easy. And further more, steady current and voltage functions easier to achieve.

Plating rectifier specification and parameter:

Plating rectifier Input voltage Single phase 220V AC, 3 phase 380V/415V/440V 50-60Hz
Output voltage 6V/12V/15V/18V/24V/36V/48V optional or according to customers’ request
Output current 0-100A (Random optional)
Voltage stability ≤1%
Current stability ≤1%
Ripple factor 1%-2%
Efficiency ≥90%
 Stabilization mode Current stabilization/Voltage stabilization (Switchable easily)
Adjustment range Voltage/Current from 0-100% continuously adjustable within rated range
Cooling system Air cooling/Water cooling/Oil cooling
Control method Manual/PLC
Display contents Voltage meter/Current meter/Working/Over temp/Error, etc..
Protection method Input over-voltage/Under-voltage/Over current/Output short/Over heating self protection etc..
Operating temperature -20-50℃
Ambient temperature -30-65℃
Ambient humidity ≤90%
Working loading Full capacity operation, more than 1,000 meters above sea level, reduced load operation

Plating rectifier Packing details:

TypeLength (mm)Width (mm)Height (mm)Weight (kg)
50A/12V3503501508
100A/12V42035015010.5
200A/12V45045020018
300A/12V50050022021
500A/12V50050020025
1000A/12V55050028038
1500A/12V60050075060
2000A/12V60050085088
3000A/12V650700850140
4000A/12V6507001100190
5000A/12V7007001450230
6000A/12V7007001700300
200A Power supply

Power supply 200A

Power supply rectification technology:

Plating power supply frequency is a direct current equipment of changing industry frequency alternating voltage into different voltage, frequency and waveform. In the thyristor rectifier main application of “rectification” technology, while in the high frequency switching mode power supply applying both “rectification” technology and “inverter” technology.

Plating Power supply mainly consisted of main circuit and control circuit.

Power supply definition:

Changing different voltage, frequency and waveform.
Power supply components: Main circuit and control circuit.
Power Frequency: 50Hz/60Hz.
Application: zinc plating, anodizing, chrome plating, copper plating, and other nonferrous metals plating.
Alternatives to silicon-controlled rectifier and oil dip power supply.

200A Power supply

200A Power supply

Power supply main circuit includes main transformer, power rectifier components and some other testing, protection devices. Power supply main transformer function is to reducing AC current/voltage to the plating technical process required voltage value. Thyristor rectifier uses frequency (50Hz/60Hz) transformer, while high-frequency switching power supplies using high frequency (10 ~ 50kHz) transformer. Detection devices include voltage meter, current transformers. Protection device is mainly used for power rectification components over-current protection. The control circuit includes a thyristor or IGBT, trigger control circuit, power soft-start circuit, over-current, over-voltage protection circuit, power phase protection circuit.

Power supply specification and parameter:

Power supply Input voltage Single phase 220V AC, 3 phase 380V/415V/440V 50-60Hz
Output voltage 6V/12V/15V/18V/24V/36V/48V optional or according to customers’ request
Output current 0-200A (Random optional)
Voltage stability ≤1%
Current stability ≤1%
Ripple factor 1%-2%
Efficiency ≥90%
 Stabilization mode Current stabilization/Voltage stabilization (Switchable easily)
Adjustment range Voltage/Current from 0-100% continuously adjustable within rated range
Cooling system Air cooling/Water cooling/Oil cooling
Control method Manual/PLC
Display contents Voltage meter/Current meter/Working/Over temp/Error, etc..
Protection method Input over voltage/Under voltage/Over current/Output short/Over heating self protection etc..
Operating temperature -20-50℃
Ambient temperature -30-65℃
Ambient humidity ≤90%
Working loading Full capacity operation, more than 1,000 meters above sea level, reduced load operation

Power supply Packing details:

TypeLength (mm)Width (mm)Height (mm)Weight (kg)
50A/12V3503501508
100A/12V42035015010.5
200A/12V45045020018
300A/12V50050022021
500A/12V50050020025
1000A/12V55050028038
1500A/12V60050075060
2000A/12V60050085088
3000A/12V650700850140
4000A/12V6507001100190
5000A/12V7007001450230
6000A/12V7007001700300

300A DC power supply

DC power supply 300A

DC power supply

DC power supply

How to choose dc power supply?

To select dc power supply has three requirements:
1, Meet the specifications required by plating process, including dc power supply power, waveform index, adjustable current and voltage range, etc.;
2, DC power supply itself reliability power supply, which mainly refers to structure reasonable, security and line features, cooling methods;
3, DC power supply cost performance.

Determine what kind of DC power supply suitable for you:

Determining plating type and and what kind of dc power supply the plating tanks shall use is the implementation and the first important work in electroplating production. There are 2 methods to determine suitable dc power supply in the actual plating production:
One: according to plating liquid solution to determine volume current density;
Two: calculated according to the plating area to get plating current density per unit.

The so-called volume current density, it is based per liter of plating solution allowed to pass maximum current to adjust entire plating tank current intensity, to determine the maximum power supply output and the conventional output.

Example for choosing DC power supply:

Copper is generally 0.2 ~ 0.3A/L;
Nickel is 0.1 ~ 2.5A/L;
Bright nickel plating is 0.3 ~ 0.35A/L;
Acid zinc is A/L;
Alkaline zinc up to 1.2 A/L;
Chrome is A/L.
Bright nickel plating as case shows, 600L bath maximum process current up to 0.3A/L × 600L = 180A, so choose 200A DC power supply is just fine.

If according to plating area volume also can calculate the max. current.
We take chrome plating as case: if it is 600L plating bath, at 60 ℃, maximum current density of 100A/dm2, the plating tank at full load setting as 10dm2, then the power required maximum output current of 100A/dm2 × 10dm2 = 1000A, that is, 1000A DC power supply, 18V rectifier power supply.

After determining power of DC power supply. Also need consider plating technical treatment process requirements and plating site condition to select waveform, cooling method, volume size, and corrosion resistance, etc., including cost factors.

DC power supply Specification and parameter:

DC power supply Input voltage Single phase 220V AC, 3 phase 380V/415V/440V 50-60Hz
Output voltage 6V/12V/15V/18V/24V/36V/48V optional or according to customers’ request
Output current 0-300A (Random optional)
Voltage stability ≤1%
Current stability ≤1%
Ripple factor 1%-2%
Efficiency ≥90%
 Stabilization mode Current stabilization/Voltage stabilization (Switchable easily)
Adjustment range Voltage/Current from 0-100% continuously adjustable within rated range
Cooling system Air cooling/Water cooling/Oil cooling
Control method Manual/PLC
Display contents Voltage meter/Current meter/Working/Over temp/Error, etc..
Protection method Input over voltage/Under voltage/Over current/Output short/Over heating self protection etc..
Operating temperature -20-50℃
Ambient temperature -30-65℃
Ambient humidity ≤90%
Working loading Full capacity operation, more than 1,000 meters above sea level, reduced load operation

DC power supply Packing details:

TypeLength (mm)Width (mm)Height (mm)Weight (kg)
50A/12V3503501508
100A/12V42035015010.5
200A/12V45045020018
300A/12V50050022021
500A/12V50050020025
1000A/12V55050028038
1500A/12V60050075060
2000A/12V60050085088
3000A/12V650700850140
4000A/12V6507001100190
5000A/12V7007001450230
6000A/12V7007001700300

6000A switching mode power supply

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Rectifier 6000A

Parameters:

Input voltage: Three phase AC380V±15% or single phase AC220V±15% 50Hz 60Hz;
Output current: 0-20000A  optional 100%continuously adjustable designed by your requirements;
Output voltage: 0-400V optional 100%continuously adjustable designed by your requirements;
Output range: Output voltage:0~rated value. (no limited);
Output current: 0~rated value.( no limited);
Efficiency: More than 90%;
Control mode: PWM Pulse control;
Cool mode: Forced by air cooling;
Voltage stability: Within1%;
Current stability: Within1%;
Control accuracy: Rated value within±1%;
Operation mode: Constant voltage, Constant current, output adjustment, ON/OFF, soft start and so on.Designed by your requirements;
Work load: 100% full load continuous running, If more than 1,000 meters above sea level, it will be reduced load operation;
Working condition: Indoors better with ambient Temperature range from -10 °C to 40 °C is good for device ,Less than 90% humidity(when ambient temperature is 20°C±5°C);
Display: Digital meters or touch screen, Ampere hour meter, timer alarm ,etc, Designed by your requirements;
Signal interface: PLC 4-20mA, 0~5V, 0~10V, RS485 or RS232 Designed by your requirements;
Complete functions: The self-protection function of over current, short circuit,overheating, phase lack, etc. Easy to maintain;
Warranty: At least One year from delivery against manufacturing defects, material defects and workmanship fails. Warranty does not cover mishandling, misuse and any operation outside working conditions;
Reasonable design, more safe and durable, separate from the harsh environment.

750A AC to DC rectifier

750A AC to DC rectifier

AC to DC rectifier

AC to DC rectifier

 AC to DC rectifier features:

  • Our AC to DC rectifier uses famous brand components and international advanced full bridge inverter technology of precision machining, so that the performance of the whole AC to DC rectifier is stable,quality is more reliable.
  • Whole AC to DC rectifier has the function of over voltage, over current, over temperature, short circuit, equal and automatic protection alarm function and soft start function. And can be equipped with time control and computer interface.
  • DC output waveform is high frequency square waveform, ripple factor less than 1%, can increase plating, refuse passivation, enhance the gloss of the plating coating surface and the core of the dark corner of plating coating. And can reduce the loss of raw materials, to achieve a variety of special requirements of electroplating industry.

AC to DC rectifier cooling method:

  • High frequency switching power supply AC to DC rectifier adopts air cooling/water cooling design, easy to install. With remote control device, simple operation. Can switch off the machine when loading, reduce cumbersome procedures of adjustment.

AC to DC rectifier advantage of small size and energy saving:

  • Small size, light weight, the whole AC to DC rectifier machine use a full range of anti-corrosion technology, enhanced the product’s anti corrosion ability, extend the service life.
  • High efficiency, energy saving, work efficiency can reach more than 90%, any voltage current ratio is always linear matching. Eliminating the need for traditional rectifiers regulator and the main transformer loss, energy saving in more than 35%, greatly reducing the electro plating cost, which is the most sensible choice for surface treatment plating machine industry.

AC to DC rectifier Specification and parameter:

AC to DC rectifier Input voltage Single phase 220V AC, 3 phase 380V/415V/440V 50-60Hz, suggest to use 3 phase
Output voltage 6V/12V/15V/18V/24V/36V/48V optional or according to customers’ request
Output current 0-750A (Random optional)
Voltage stability ≤1%
Current stability ≤1%
Ripple factor 1%-2%
Efficiency ≥90%
 Stabilization mode Current stabilization/Voltage stabilization (Switchable easily)
Adjustment range Voltage/Current from 0-100% continuously adjustable within rated range
Cooling system Air cooling/Water cooling/Oil cooling
Control method Manual/PLC
Display contents Voltage meter/Current meter/Working/Over temp/Error, etc..
Protection method Input over voltage/Under voltage/Over current/Output short/Over heating self protection etc..
Operating temperature -20-50℃
Ambient temperature -30-65℃
Ambient humidity ≤90%
Working loading Full capacity operation, more than 1,000 meters above sea level, reduced load operation

AC to DC rectifier Packing details:

TypeLength (mm)Width (mm)Height (mm)Weight (kg)
50A/12V3503501508
100A/12V42035015010.5
200A/12V45045020018
300A/12V50050022021
500A/12V50050020025
1000A/12V55050028038
1500A/12V60050075060
2000A/12V60050085088
3000A/12V650700850140
4000A/12V6507001100190
5000A/12V7007001450230
6000A/12V7007001700300