1kVA Pure Sine Wave Digitally-Controlled Inverters Suit Heavy-Duty Applications

The CSI 1K-U5515 series of rugged, modular, dc-ac inverter systems from Absopluse Electronics, Ltd. employ field-proven microprocessor controlled high-frequency pwm technology to deliver 1kVA sine wave output voltage. They are suitable for a broad range of heavy-duty industrial applications that require "clean", stable ac-power. New microprocessor controlled conversion topology and an innovative internal mechanical design enable high-efficiency, compact construction, low weight and low price. The ruggedly constructed units measure 127 x 127 x 397 mm (5" x 5" x 15.6").

The inverters provide a single, regulated pure sine wave output of 115Vac/8.7Arms continuous at 400Hz or 60Hz, or 230Vac/4.3Arms continuous at 50Hz. Standard dc-input voltages include 48Vdc (42–56V), 110Vdc (90–130V) or 125Vdc (106–145V). Other input and output voltages are available on request. The input and output have a dual stage high performance filter which ensures low noise; the input meets EN55022 Class A conducted and radiated requirements with wide margins.

The CSI 1K–U5515 inverters comply with C22.2 No. 107.1-01, UL 458 and EN/UL60950-1 and equivalent internationally recognized industrial safety standards. They have 1700Vdc input to output isolation (which may differ depending on the voltage requirements), and protection for overload, over voltage, short-circuit and inrush current. A built-in fan provides sufficient cooling for operation at full specification over a 0°C to +50°C temperature range without de-rating. Extended temperature ranges and conformal coating are available for operation in severe environments. Remote shutdown and an output fail alarm (Form C) are also available on request.