01483 302 700


Magnus Power Image 1
Download contact


Magnus Power


The LF3-400 Frequency Converter offers a competitive price, fixed frequency, fixed voltage sine wave output ideal for aerospace/avionics applications.

A transformer ensures full isolation between the output voltage and the incoming supply and the
output neutral (star point) may be earthed externally if required. The unit is fully protected against
overcurrent and overtemperature conditions. Input power and output cable supplied.
This unit is normally supplied as a free standing bench top unit; but the LF3 can also be built in a
rack mount configuration if required at no extra cost. A support shelf or bracket would be required
when the rack mounting option is specified: these are not supplied with the unit, as their dimensions
will depend on the arrangement of the cabinet or rack.

Input Requirement

  • 230V single phase, +10% / - 6%, 45 – 66Hz

Output Capability

  • 115/200V 400Hz +/- 1Hz, at up to 3kVA (8.7A/ph max)
  • Overcurrent trip at >1200VA on any phase
  • Short circuit and overtemperature protection
  • Load Power Factor 0.5 lag to 0.5 lead at full load
  • With linear load, line regulation +/- 1%, load regulation +/- 1%
  • THD better than 5% and full load efficiency >80%

Controls, Indications & Connections

  • Input On/Off and indicator, Output On/Off Switch.
  • Output voltage Indicators and digital output Amp Indicators.
  • Overcurrent and overtemperature indicators.
  • Heavy-duty industrial rectangular input and output connectors.

Operating Environment

  • 0 to +40 degrees
  • 90% non condensing

Size & Weight 

  • 449mm wide x 476mm (Case) 562mm (With Handels) deep x 177mm high (4u in 19 Inch rack)
  • 36kg


Caltest Instruments Ltd

4 Riverside Business Centre

Walnut Tree Close


Surrey GU1 4UG

United Kingdom

Tel: +44 (0) 1483 302 700

Fax: +44 (0) 1483 300 562

Email: sales@caltest.co.uk

Caltest have been providing power sources and test instrumentation solutions for over 17 years and are proud to represent a number of industry leading manufacturers.