PULS Power Supplies has launched its QT20.241, 480W model. The latest addition to the space saving PULS Dimension series, the output is adjustable from 24 to 28VDC at up to 20A continuous load. A major benefit of the PULS Dimension series is the "Bonus Power" feature, allowing 50% extra output power for up to 4 seconds.
The QT20.241 features an efficiency of up to 95% enabling a compact case size of 65x124x127mm. With a wide range 3-phase input voltage from 380-480Vac, the unit is specified for 2-phase operation and has an MTBF exceeding 600,000 hours. The power supply has an active input transient filter which together with active power factor correction and low inrush current simplifies circuit protection.
Full output power is available over the temperature range -25°C to +60°C and a "DC OK" relay signal provides feedback to system controller. Reliable "quick-connect" spring clamp terminals are used for input and output connections simplifying installation and maintenance and the power supply has a 3-year warranty. The QT20 family includes two other models with output voltages of 36-42VDC and 48055VDC.
"The QT20 power supply is ideal for use in remote locations in extreme conditions" Claims Harry Moore, Managing Director of PULS UK. "The combination of high efficiency and reliability, wide operating temperature range and rugged filtering really makes this a great product for outdoor cabinets and harsh environments where secure power is essential. While we specify low temperature start as being -25°C we have carried out tests for a major customer which show in practice -40°C is typical"
The QT20.241 fulfils the requirements of EN 61558-2-17, EN 60204-1, EN 61131 and EN 50178 and is approved to EN 60950-1, UL 508, UL 60950-1 and SEMI F47.
Typical applications include, industrial control equipment, office and electrical systems, control panels, communication systems and instrumentation. PULS Dimension products are available from stock in the UK.
