High power density from telecomms inverter

The INV5000-230 produces 230V AC RMS at 22A (5kVA) in a 2RU-high (3.5in) shelf which mounts in a 19 or 23in rack.

Unipower Telecom's new INV5000-230 produces 230V AC RMS at 22A (5kVA) in a 2RU-high (3.5in) shelf which mounts in a 19 or 23in rack.

Both 50 and 60Hz models are available, and the input voltage range is 42 to 56V DC.

The near-perfect sinusoidal waveform has less than 2% total harmonic distortion and +/-0.1% frequency stability.

A microcontroller creates the sinewave reference and controls the other functions of the inverter.

High-frequency pulsewidth modulation with mosfet and IGBT power semiconductors are employed to achieve 90% efficiency and 4.8VA/in3 power density.

The INV5000-230 is fully isolated from the battery input.

Input circuit breakers turn the inverter on and protect the battery from input faults.

Output breakers connect the inverter to the load bus and quickly disconnect it in the event of an internal fault.

The inverter also has a synchronisation feature for connection to a line AC bus.

A high surge capability makes it useful for starting into inductive loads like motors, but quick-trip output breakers prevent power from flowing back into a faulted inverter.

Front panel LEDs indicate inverter status, and form C relay alarm contacts are available on the back.

The unit is self-cooled by internal fans and comes with a clear plastic rear safety cover.

Two or more INV5000-230 units can also be paralleled for higher power or operated in an N+1 redundant mode.

The INV5000-230 is ideally suited for use in telecomms installations, electric utility substations, fuel cells and solar panel arrays.

Delivery time is typically 2-4 weeks.

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