Hydro Power

Dedicated power generation expertise and solutions for the Hydro Power Industry

4 GW installed capacity worldwide

Over 50 years of experience

Generators up to 25 MW

More than 450 projects completed over the last 20 years

ISO 9001 & 14001 certified

A trusted partner

As a historical and recognized player in the field of hydroelectric power generation, Nidec - Kato Engineering/Leroy-Somer develops an approach of commitment and transparency for your full confidence and satisfaction.

Throughout the project life, including design and manufacturing phases, Nidec - Kato Engineering/Leroy-Somer teams will help you meet technical and environmental specifications ensuring the optimum configuration and implementation.

The right solution

  • Our products can be coupled to all turbine types, with particular attention to critical speed issues
  • Overhung runner assembly on extended shaft end, with turbine load withstanding
  • Rigid mechanical assembly coupled to dynamic balancing grade G1 (ISO 1940-1), aiming at low vibration levels in all operating conditions
  • Compact design focused on reducing foundation costs

Product Range Overview 

Power 0.01 - 25 MW
Voltage 220 - 15,000 V
Rotation speed 250 - 1500 rpm / 50Hz
300 - 1800 rpm / 60Hz
Mounting Vertical or Horizontal
Cooling IC01 - IC21 - IC31 - IC81W (IEC 60034-6)
Insulation class H
Temperature rise class F or B
Excitation Self-excited - Brushless rotating excitation
Regulation Analog or digital Nidec - Kato Engineering/Leroy-Somer AVR



A global network of certified Service Centers can provide repairs and maintenance of products for the Hydro power industry. Everywhere in the world, there is a service center able to take care of your needs.


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