LSAH Cogeneration Range

50 to 94 kVA - 50 Hz / 62 to 117 kVA - 60 Hz


LSAH 44.3 for cogenerationBuilt to heat

The LSAH range of alternators has been designed to maximize efficiency of cogeneration installations.
Thanks to its specific built-in coolant circuit, heat recovery is optimized and directly fed into the larger installation.
LSAH alternators are also perfectly suited for continuous service connected to the national grid.
The various design elements and construction features of LSAH machines make them highly performant and durable.


Nidec Leroy-Somer LSAH 44.3 alternator meets all key international standards and regulations, including IEC 60034, NEMA MG 1.32-33, ISO 8528-3, CSA C22.2 n°100-14 and UL 1446 (UL 1004 on request).
Also compliant with IEC 61000-6-2, IEC 61000-6-3, IEC 61000-6-4, VDE 0875G, VDE 0875N and EN 55011, group 1 class A for European zone.
Nidec Leroy-Somer LSAH 44.3 alternator can be integrated in EC marked generator set, and bears EC, EAC and CMIM markings.
It is designed, manufactured and marketed in an ISO 9001 and ISO 14001 quality assurance environment.

Electrical features & performances

  • Class H insulation
  • Standard 6 wire re-connectable winding, 2/3 pitch, type no. 6S
  • Voltage range:
    • 50 Hz: 220 V - 240 V and 380 V - 415 V (440 V)
    • 60 Hz: 208 V - 240 V and 380 V - 480 V
    • Other voltages: consult us
  • High efficiency and motor starting capacity

Mechanical construction

  • Compact rigid assembly to better withstand generatorvibrations
  • Steel frame and terminal box
  • Cast iron flanges and shields
  • Two-bearing and single bearing mounting
  • Half-key balancing
  • Ball bearings greasable 40,000h
  • Direction of rotation: clockwise and anti-clockwise (without derating)
  • Noise level 67 dB

Terminal box design

  • Remote voltage regulator
  • Terminal block for voltage reconnection
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