Cosel adds 250V DC power supply for industrial applications
The 3000W low profile power supply series by Cosel now includes a 250V DC unit for industrial applications which require a high speed response.
The FETA3000BC is an enclosed AC/DC power supply with an adjustable output voltage of 100 to 350V DC for applications which require a fast output voltage response. They have a high power density of 2.1W/cm3 and a low profile of 1U.
The power supply is designed with Cosel’s built-in digital microprocessor technology and includes active current sharing, making it simple to parallel up to 10 units for extra power or redundancy. For high efficiency the FETA3000BC includes an active filter and uses a phase shift, full bridge topology offering an efficiency level of up to 93 per cent.
Similar to envelop tracking technology used in power amplifiers, industrial applications such as laser, plasma processing and industrial heating are requiring the output voltage of power supplies to adjust rapidly within the range of 100V DC to 350V DC in less than two milliseconds to provide an accurate voltage to the emitting element. This requires very tight, specific power control and Cosel’s propriety fast response technology in the FETA3000BC results in response time across the full output voltage range of 1.5 millisecond, guaranteeing high performance levels to the final equipment, said Cosel.
Input voltage range is 170 to 264V AC for a nominal output voltage of 250V DC, adjustable from 180V DC to 350V DC using the built-in potentiometer, or 100V DC to 350V DC when using the trimming analogue control function available at the interface connector. The nominal output current is 12A and efficiency is up to 93 per cent at 230V AC input.
An integrated voltage and current balance control simplifies system integrators’ task when connecting units in parallel or series. It is possible to connect up to 10 units in parallel without adding any other external components. The digital control also applies to switching parameters to optimise efficiency and reduce energy consumption.
To reduce audible noise the FETA3000BC series is equipped with a thermo-regulated fan whose speed is automatically adjusted to optimise cooling according to actual needs.
The FETA3000BC includes inrush current limiting circuitry, over-current and over-voltage protection and thermal protection. Power good and alarm signals are available from the interface panel and state of those highlighted by LED. The unit can be remotely controlled via the RC pin.
The FETA3000BC series can be operated within a temperature range of -10 to +70 degrees C, 20 to 90 per cent RH (non condensing), and up to 3,000m (10,000 feet) maximum altitude. Depending on cooling and assembling methods, a power derating may apply.
The FETA3000BC includes an input filter and complies with FCC Part 15-A, CISPR32-A, EN55032-A, VCCI-A. In cases where a higher level of conducted noise attenuation is required, Cosel recommends use of the NAC-20-472 filter. The power supply has an input to output isolation of 3,000V AC, input to ground (FG) of 2,000V AC and output to ground (FG) of 2,000V AC. It is UL62368-1, C-UL (CSA62368-1), EN62368-1 safety approved.
The FETA3000BC measures 102 x 41 x 340mm (4.02 x 1.61 x 13.39 inches) (and weighs 2.3kg maximum.
The FETA3000BC is suitable for measurement and analysis equipment, machine tools, semiconductor manufacturing equipment, battery chargers, and power amplifiers. The power supplies comply with the RoHS directive and are CE and UKCA marked in accordance with the Low Voltage Directive.
