LSAH Cogeneration Range

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

LSAH

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.

Standards

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

  • Key features
    Insulation class H
    Winding pitch 2/3 (winding 6S - 6-wire)
    Number of wires 6
    Protection IP44
    Cooling - Code  Water - IC7A1W7
    Altitude ≤ 1000 m
    Overspeed 2250 min-1
    Water flow 3 to 10 m3/h
    Excitation system

    AREP

    AVR type  D350
    Voltage regulation (Steady state) ± 0,25 %
    Short-circuit current  300 % (3IN) : 10s
    Total Harmonic Distortion THD (*) in no-load  < 2 %
    Total Harmonic Distortion THD (*) in linear load    < 5 % 
    Waveform: NEMA = TIF (*) < 50 %
    Waveform: I.E.C. = THF (*) < 1.5 %

    (*) Total harmonic distortion between phases, no-load or on-load (non-distorting)

  • Regulation
    Regulators D350 D550
    AREP
    Mains Paralleling -
    3-phase sensing
    Remote voltage potentiometer
    Current transformer for paralleling      

    ● : Included             ○ : Option             - : Not available

  • Protection system & options
    • Designed for an operating environment up to 80°C and a maximum cooling liquid temperature of 75°C
    • Water flow: 3 to 10 m3/h
    • Degree of protection: IP 44
    • Enclosed machine cooled by heat transfer fluid

    Options:

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