LSA 43.3 L7 IC7
LSA 43.3 L7 IC7
  • 2 pole
  • 70 kVA
  • 50 Hz
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The best of performance

The Leroy-SomerTM LSA 43.3 L7 IC7 alternator is a totally enclosed water-cooled machine for special applications.
Cooling is performed by an air/water exchanger (cooling index: IC7A1W7 in accordance with standard IEC 60034-6)

Standards

The Leroy-SomerTM LSA 43.3 L7 IC7 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.

The Leroy-SomerTM LSA 43.3 L7 IC7 alternator can be integrated in EC marked generator set, and bears EC, UKCA and CMIM markings. It is designed, manufactured and marketed in an ISO 9001 and ISO 14001 quality assurance environment.

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

  • 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

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
  • Thermal protection for stator windings (PT100 sensors)
  • Shaft height: adapted on request