True sinewave output for hostile applications

The new ACR250 series from Cambridge-based Powertron is a range of robust medium-power inverters that provide a 240V AC true sinewave output with very low distortion.

The new ACR250 series from Cambridge-based Powertron is a range of robust medium-power inverters that provide a 240V AC true sinewave output with very low distortion.

Designed for use in applications that demand high resistance to vibration, shock and electromagnetic interference, the inverters are housed in a die-cast aluminium enclosure featuring IP65 environmental sealing as standard.

The ACR250 series consists of four models, offering input voltages of 110, 72, 52 or 24V.

Input range is 60 to 125% of nominal, and each unit delivers 250W continuous output power (400W peak) with an efficiency of typically 85%.

In addition to their physical robustness, the inverters incorporate a comprehensive set of electrical protection features, including reverse polarity protection on the input, surge and transient filtering, short-circuit protection, delayed current limiting and thermal protection.

Red LEDs provide visual indication of short-circuit and overcurrent latch conditions.

All models in the series have an output frequency of 50Hz with a tolerance of 10.2%, while harmonic distortion is specified as less than 1.5%.

EMC performance meets the requirements of the EN50155 and EN50121 standards.

The units measure 100 x 180 x 280mm, excluding the mounting plate, and can operate in ambient temperatures ranging from -25 to +55C.

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