Custom SCR Rectifiers

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Dynapower offers a full line of air and water-cooled custom SCR rectifiers to meet all of your needs. We have extensive experience in providing custom SCR rectifiers for a wide variety of applications that include metal finishing, anodizing, water treatment, crane duty, electrochemical applications, metal and battery formation.

There are also many different reasons to go custom. The most common is to power a very specific process. Here are a few common other ones we see.

  • Your plant could have specific safety requirements that call for custom rectifiers (the most common)
  • You may require high-voltage rectifiers or rectifiers that have very high arc flash potential due to the amount of power that they’re converting—which calls for custom additions so preventative maintenance can be performed on the machines.
  • Larger, high-power rectifiers often tend to be custom engineered
  • High precision processes or high volume with next to no downtime tend to be custom and require additional resiliency

When considering a high arc flash potential, a common custom feature would be a custom designed preventative maintenance port or a special layout so your access cabinets mitigate risk to maintenance personnel. Additionally it’s important to highlight that all of our rectifiers are designed around mitigating any inherent safety risks and to the highest safety standards.

Basically, the higher the quality standards become—whether through national standards or internal requirements—the more precise our customer base needs to be ensure there’s data connectivity between the unit. For instance, if you’re in a facility that needs to run three verifications of the part one layer of measurement, we could build you a custom rectifier with three points of measurement.

Dynapower’s rectifiers ensure years of maintenance-free operation and a long operating lifetime with the most comprehensive warranty in the industry. Here are some features to consider:

  • Available in water-cooled or air-cooled designs
  • Deep hole drilled silver plated copper bus bar
  • Sealed enclosure for operation in aggressive environments
  • Various NEMA ratings are available to meet the protection rating best suited for your application
  • Protocol compatibility with Profinet or Ethernet/IP, etc
  • Control upgrades to accommodate any process including touchpad controllers, touchscreen controllers, analog controls and anodizing controllers

Input Voltage
Any voltage up to 6000 VAC, three phase 60 or 50 HZ. Other voltages and frequencies available upon request.
Output Current:
Up to 50,000 ADC. Higher current available upon request.
Output Voltage
Up to 1,000 VDC. Higher voltages available upon request.
Air, direct water, oil or closed loop.
Low loss grain oriented silicon steel cores, all copper conductors, 220°C insulation and design temperature rise <80°C.
Duty Cycle
All Dynapower rectifiers are rated for 100% duty cycle continuous at up to 40°C ambient. Higher temperatures available upon request.

Precision Electronic Controls: In protective, sealed enclosures, isolating them from aggressive atmospheres.

Automatic Voltage Stabilization: Maintains the output voltage constant to within ±0.5% of rated voltage from 0-100% of rated current.

Current Limiting: Prevents the output current from exceeding a factory preset limit.

Voltage Limiting: Prevents the output voltage from exceeding a factory preset limit.

Peak Current Overload Detector: The PCOD continuously monitors the DC output for short circuit conditions. In the event of a short circuit, the PCOD reduces the output to a safe level, protecting the power supply from potentially harming overload conditions.

Thermal Detectors: Strategically placed thermal detectors sense device temperatures and protect semiconductors and transformers.

Remote Control: Remote control consoles include start-stop push buttons, a power-on light, analog or digital displays and control potentiometers.

SCR Watchdog: A Dynapower exclusive, the SCR Watchdog continuously monitors each SCR. In the event of an SCR failure, the remaining SCRs are phased back and the AC power is removed. This feature protects the rest of the SCRs from failure.

Reduced Ripple
Ripple is the amount of AC that appears as voltage fluctuations on the DC output. Because some metal finishing applications cannot tolerate excessive ripple levels, Dynapower offers power supplies with ripple as low as 1% of the operating set point.

Polarity Reversing

All SCR rectifiers can be built to include solid-state reversing capabilities. This is achieved using a separate set of thyristors and electronics.

Digital Ampere-Hour / Minute Meter

Totalizing, preset counter and solution metering configurations are available to meet process and EPA requirements.

Computer Interface
Allow isolated connections of a rectifier to a computer or PLC. The computer or PLC can send voltage and/or current control signals to the rectifier, and in return receive signals from the rectifier proportional to the output voltage and/or current. Available in Analog, Modbus, Profibus, ethernet and DeviceNet.

Variable Timer
Timers are available to turn the rectifier off, sound an alarm, illuminate a light (or any combination) at the end of a process cycle.

Variable Ramp

When AC power is applied to the rectifier, the DC output will ramp up from zero to the preset output over a specific time. Fifteen different ramp time ranges can be selected through a convenient DIP switch. The ramp time is variable from 1% to 100% of the selected range. When the predetermined output level is reached, the power supply will automatically maintain a constant output for the duration of the cycle.

Automatic Current Density

The DC output is varied in direct proportion to the load, maintaining an average current density over varying load sizes.

New Rectifier Financing Program

Dynapower is now offering low interest rectifier financing programs in partnership with Lease Corporation of America. Get the equipment you need now and pay for it over time. You can also take advantage of IRS Section 179 and deduct 100% of the cost leased or purchased equipment in the first year that the equipment is put into service, saving your business thousands of dollars on your tax bill.

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Perfect for processes that do not require specialized outputs, the Analog Control Package was designed to be as reliable and straightforward as possible ensuring you get the unit control you need while withstanding the harshest environments.

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A programmable controller designed to be flexible, reliable, and user-friendly. Precision digital controls and intuitive recipe storage ensure users get the exact unit output required by their processes, making it quick and easy to automate.

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A programmable touchscreen controller designed to give users maximum control over their units. With an easy to navigate graphic display and user friendly recipe storage, automating your processes has never been faster or easier.

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The ideal controller to automate anodizing processes, saving time, labor, and material. With several controller types to suit specific anodizing types as well as custom options for special processes, the Anodize Process Controller ensures Nadcap compliance.

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At our manufacturing facility in Burlington, VT, we have full time controls engineers whose only job is to interface our rectifiers to whatever control stream and quality monitoring you process requires. We pride ourselves on designing and engineering custom control designs and rectifiers that follow form to function to fit customers’ exact needs.

One of our popular custom designs is offering local monitoring and remote monitoring so you have two points of data capture for your rectifiers. We’ve designed controllers that display temperature ratings for the bussing, chemistry and arc react actor. We offer control mechanisms that can be calibrated to fit your specific process needs.

Also, if you already have designs in your facility you’ve invested in and you have an existing spare parts inventory, we can incorporate those key factors into the design of your new piece of equipment—which allows for much easier maintenance and saves money by utilizing your existing parts.

So what are you waiting for? Call 1.888.851.1689 or go here to get started today!