LSAH 44.3
LSAH 44.3 - Cogeneration alternator | 40 - 94 kVA
40 to 75 kVA - 50 Hz / 50 to 94 kVA - 60 Hz
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Built 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 and other applications like oil and gas. The various design elements and construction features of LSAH machines make them highly performant and durable

Electrical features & performances

  • Class H insulation
  • 2/3 pitch winding, standard 6-wire (6S) reconnectable
  • Voltage range:
    • 50 Hz: 380V/400V/415V 
    • 60 Hz: 380V/440V/480V
    • Other voltages: consult us
  • High efficiency and motor starting capacity

Mechanical construction

  • Compact rigid assembly to better withstand generator vibrations
  • 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: 81 dBA (IEC 60034-9)
  • Output cable direction: left or right

Terminal box design

  • Remote voltage regulator (AVR not mounted in terminal box)
  • Terminal block for voltage reconnection
  • Terminal block on the left or right, or both sides (with extra cost)
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)

 

 

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

● : Included             ○ : Option             - : Not available

  • 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
  • pH of water : 7<pH<8
  • Degree of protection: IP 44 (option: IP55/IP56)
  • Enclosed machine cooled by heat transfer fluid

Options:

  • Bearing sensors
  • Thermal protection for stator windings (PT100 sensors)
  • Shaft height: adapted on request
  • Double terminal box
  • Space heater
  • Remote voltage potentiometer
  • Current transformer for parallel operation
  • Single-bearing configuration 
  • Reinforced paint for harsh environment