LSA 43.3 L7 IC7 - 2 pole - 70 kVA - 50 Hz

Nidec Leroy-Somer LSA 43.3 L7 IC7 alternator is totally enclosed water-cooled machine for special applications.

The LSA 43.3 L7 IC7 cooling is performed by an air/water exchanger (cooling index: IC7A1W7 in accordance with standard IEC 60034-6).

Electrical characteristics

• Class H insulation
• Mixed winding 2/3 and 5/6, standard 4-wire (6S)
• 50 Hz voltage range: 220V - 240V and 380V - 415V
• High efficiency and motor starting capacity
• D550 digital AVR specifications:
  - Voltage accuracy ± 1% on balance linear load
  - Under speed protection
  - Integrated radio interference suppressor
  - Mounted inside the terminal box 

Protection system and options

• Designed for an operating environment up to 80°C and a maximum cooling liquid temperature of 93°C, as well as air cooling of the terminal box with a maximum temperature of 50°C
• pH of water: 7<pH<8
• Degree of protection: IP 6K9K
• Enclosed machine cooled by heat transfer fluid
• Options:
   - Thermal protection for stator windings (PT100 sensors)
   - Shaft height: adapted on request

Mechanical construction

• Compact rigid assembly to better withstand generator vibrations
• Steel frame and aluminum terminal box
• Cast iron end shields
• Two-bearing mounting with Rotex coupling
• Half-key balancing
• Greased for life ball bearings
• Direction of rotation: clockwise and anti-clockwise (without derating)

Terminal box design

• Power and signal connection via 2 Harting connectors
• Cooling of the terminal box by an air flow with a maximum temperature of 50°C