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Nidec Leroy-Somer, world leader in alternators from 10 to 35,000 kVA, has been manufacturing a range of special frequency products destined for the aircraft industry, for the last 30 years.
Expertise in design and manufacturing ensure that each Nidec Leroy-Somer product meets the technical requirements of this exacting application.
The 400Hz alternators are brushless, self-excited generators (Shunt excitation), with the D550 digital AVR fitted as standard.
They meet the principal international standards, notably: IEC 60034-1.
Our latest D550 Digital AVR is compatible with all our 400 Hz alternators.
It is equipped with several advanced protections and integrates a visual interface (EasyReg Advanced Software), that enables users to read configuration values and parameters.
The D550 has also been optimized for grid parallel operations and complies with the latest grid code regulations.
Electrical characteristics
- Voltage: 200V (L-L) / 115V (L-N) adjustable to ± 5%
- Insulation class H
- Power factor: 0.8
- Transient voltage dip ≤ 10% for 50% load variation
- Harmonic rate < 3% at no load
- Recovery time ≤ 500 ms
- D550 digital AVR specifications:
- Voltage accuracy ± 1% on balance linear load
- Under speed protection
- Integrated radio interference suppressor
- Mounted inside the terminal box
Mechanical characteristics
- Single-bearing IM2005
- Two-bearing IM2001
- Steel frame and steel / cast-iron / aluminum end shields
- Cylindrical and standardized shaft end for two-bearing
- Sealed for life bearings
- IP 23 protection, self-ventilated alternator
Operating conditions
- Ambient temperature: -20°C and +50°C.
- Altitude up to 1000m
Options Available:
- Radio interference suppressor
