Leroy-Somer Alternators

LEROY-SOMER alternators are available in two ranges:

Industrial range, Low & medium Voltage, 50 & 60Hz, 4 & 6 pole, from 5 kW to 3.6 MW; these alternators are designed for gensets driven by diesel or gas engines. These generators are used in numerous fields such as rental & construction, marine, telecom, commercial, health, etc.

Alternators from this segment benefit from the latest Leroy-Somer technical innovations and deliver increased value to customers and end-users, in terms of ease of integration and energy savings. They are recognized for their high performance level as well as for their reliability in demanding applications and harsh environments and are available in 3 excitation system versions: Shunt, PMG or AREP. The AREP system is a Leroy-Somer patent and is particularly adapted to all applications which require high motor starting capacity and short-circuit capability.

Customized (design to order) range, Low, Medium and High Voltage, 50 or 60hz, 4 to 24 pole, from 5 MW to 25 MW; these alternators are dedicated to power plants and are driven by diesel or gas engines, gas or steam turbines, wind turbines or hydro turbines. In addition to stationary power plants, they are also used in other fields such as oil & gas, nuclear, marine, etc.


Leroy-Somer Alternator LSA 49.3
LSA 49.3

Hydropower alternator
LSA 62​