Nidec LSAH 44.3 Alternator Installation Guide
- June 12, 2024
- Nidec
Table of Contents
Nidec LSAH 44.3 Alternator
Product Information
The LSAH 44.3 is an alternator designed for cogeneration installations. It has a power output range of 40 to 75 kVA at 50 Hz and 50 to 94 kVA at 60 Hz. The alternator is equipped with both electrical and mechanical data for efficient operation.
Main Features
- Built-in coolant circuit for optimized heat recovery
- Direct integration with larger installations
- Suitable for continuous service connected to the national grid
- Compatible with oil and gas applications
- Highly performant and durable construction
Standards
The LSAH 44.3 alternator complies with industry standards for electrical
characteristics and performances.
Protection System and Options
The alternator is equipped with a protection system to ensure safe
operation. It also offers additional options for customization and enhanced
functionality.
Product Usage Instructions
To use the LSAH 44.3 alternator, follow these steps:
- Ensure that the installation is compatible with the power output range of the alternator (40 to 75 kVA at 50 Hz or 50 to 94 kVA at 60 Hz).
- Connect the alternator to the cogeneration installation or the national grid, depending on the intended use.
- If applicable, connect the coolant circuit of the alternator to the larger installation for optimized heat recovery.
- Ensure that the alternator is properly protected using the built-in protection system.
- Customize the operation of the alternator by utilizing any available options according to your specific requirements.
- Monitor the performance of the alternator and address any issues promptly to ensure continuous and efficient operation.
For further details and specific instructions, refer to the complete user manual provided with the product.
Alternator for cogeneration installations
40 to 75 kVA – 50 Hz / 50 to 94 kVA – 60 Hz
Electrical and mechanical data
MAIN FEATURES AND OPTIONS
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.
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 and CMIM markings.
It is designed, manufactured and marketed in an ISO 9001 and ISO 14001 quality
assurance environment.
Electrical characteristics and 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
Protection system and 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
- pH of water: 7<pH<8
- Degree of protection: IP 44 (option: IP55/IP56)
- Enclosed machine cooled by heat transfer fluid
- Options:
- Double terminal box
- Space heater
- Bearing sensors
- Thermal protection for stator windings (PT100 sensors)
- Shaft height: adapted on request
- Remote voltage potentiometer
- Current transformer for parallel operation
- Single-bearing configuration
- Reinforced paint for harsh environment
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
- Greasable ball bearings: 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)
EXCITATION AND REGULATION SYSTEM
| Excitation system | Regulation options |
|---|
AVR
| ****
AREP
| C.T.
Current transformer for paralleling
| Mains paralleling| Remote voltage potentiometer
D350| Standard| √| | √
D550| Option| √| √| √
3-phase sensing is included as a standard with digital regulators.
GENERAL CHARACTERISTICS
| Insulation class | H | Excitation system | AREP | |
|---|---|---|---|---|
| Winding pitch | 2/3 (wind. 6S) | AVR type | D350 | |
| Number of wires | 6 | Voltage regulation (*) | ± 0.25 % | |
| Protection | IP 44 | Short-circuit current | 300 % (3 IN) : 10s | |
| Cooling – Code | Water – IC7A1W7 | Total Harmonic Distortion THD (**) in no- | ||
| load | < 2 % | |||
| Altitude | ≤ 1000 m | Total Harmonic Distortion THD (**) in linear load | < 5 |
%
Overspeed| 2250 R.P.M.| | Waveform: NEMA = TIF ()| < 50
Water flow| 3 to 10 m3/h| | Waveform: I.E.C. = THF ()| < 1.5 %
(*) Steady state (**) Total harmonic distortion between phases, no-load or on- load (non-distorting)
RATINGS
50 Hz – 1500 R.P.M.
60 Hz – 1800 R.P.M.
| Duty max. / T° C | Continuous / 80 °C (environment) – 75 °C (liquid) |
|---|---|
| Class / T° K | |
| 1** | P.F. φ 0.8 |
| Y | |
| 480V | 380V |
480V
LSAH 44.3 M4| kVA| 40| 46| 50| 49| 57| 62| 32| 37| 40|
40| 46| 50| 44| 50| 55| 55| 63| 69
kW| 40| 46| 50| 39| 46| 50| 32| 37|
40| 32| 37| 40| 44| 50| 55| 44| 50|
55
LSAH 44.3 M6| kVA| 49| 57| 62| 62| 72| 78| 40| 46| 50|
49| 57| 62| 54| 62| 68| 67| 78| 85
kW| 49| 57| 62| 50| 58| 62| 40| 46|
50| 39| 46| 50| 54| 62| 68| 54| 62|
68
LSAH 44.3 L8| kVA| 59| 69| 75| 74| 86| 94| 48| 55| 60|
59| 69| 75| 66| 76| 83| 82| 94| 103
kW| 59| 69| 75| 59| 69| 75| 48| 55|
60| 47| 55| 60| 66| 76| 83| 66| 75|
82
LSAH 44.3 VL12| kVA| 74| 86| 94| 93| 107| 117| 59| 69|
75| 74| 86| 94| 82| 95| 104| 103| 119| 130
kW| 74| 86| 94| 74| 86| 94| 59| 69|
75| 59| 69| 75| 82| 95| 104| 82| 95|
104
For other needs, please contact us.
TEMPERATURE AND POWER
Power adjustment factor according to the coolant temperature
| Coolant T °C | 40 – 50 °C | 60 – 75 °C | 85 – 95 °C |
|---|---|---|---|
| Factor | 1.03 | 1 | 0.97 |
Max ΔT water (outlet vs inlet) at water temperature 40 °C to 75 °C
| Class B | Class F | Class H |
|---|---|---|
| 0.5 K | 0.7 K | 0.9 K |
EFFICIENCIES 400 V – 50 HZ (— P.F.: 0.8) (— P.F.: 1) – CLASS F
REACTANCES (%). TIME CONSTANTS (MS) – CLASS F / 400 V – P.F. 1
| M4 | M6 | L8 | VL12 | |
|---|---|---|---|---|
| Kcc Short-circuit ratio | 1.28 | 0.67 | 0.93 | 0.99 |
| Xd Direct-axis synchronous reactance unsaturated | 119 | 179 | 150 | 140 |
| Xq Quadrature-axis synchronous reactance unsaturated | 61 | 91 | 76 | 71 |
| T’do No-load transient time constant | 1802 | 1921 | 2024 | 2253 |
| X’d Direct-axis transient reactance saturated | 6.6 | 9.3 | 7.4 | 6.2 |
| T’d Short-circuit transient time constant | 100 | 100 | 100 | 100 |
| X”d Direct-axis subtransient reactance saturated | 3.9 | 5.5 | 4.4 | 3.7 |
| T”d Subtransient time constant | 10 | 10 | 10 | 10 |
| X”q Quadrature-axis subtransient reactance saturated | 6.9 | 9.8 | 7.8 | 6.7 |
| Xo Zero sequence reactance | 0.27 | 0.38 | 0.3 | 0.26 |
| X2 Negative sequence reactance saturated | 5.47 | 7.73 | 6.16 | 5.25 |
| Ta Armature time constant | 15 | 15 | 15 | 15 |
| Other class F / 400 V data | ||||
| io (A) No-load excitation current AREP | 1.08 | 0.74 | 0.94 | 0.94 |
| ic (A) On-load excitation current AREP | 1.4 | 1.35 | 1.42 | 1.39 |
| uc (V) On-load excitation voltage AREP | 11.2 | 10.8 | 11.4 | 11.1 |
| ms Response time (∆U = 20% transient) | 500 | 500 | 500 | 500 |
| kVA Start (∆U = 20% continuous or ∆U = 30% transient) AREP* | 275 | 255 | ||
| 371 | 550 | |||
| % Transient ∆U (on-load 4/4) AREP – P.F.: 1 LAG | 4.8 | 4.8 | 4.8 | 4.8 |
| W No-load losses | 1212 | 947 | 1289 | 1598 |
| W Heat dissipation | 1602 | 1740 | 2006 | 2374 |
TRANSIENT VOLTAGE VARIATION 400 V – 50 HZ – CLASS F
- For a starting P.F. other than 0.6, the starting kVA must be multiplied by K = Sine P.F. / 0.8
- For voltages other than 400V (Y), 230V (Δ) at 50 Hz, then kVA must be multiplied by (400/U)2 or (230/U)2.
EFFICIENCIES 480 V – 60 HZ (— P.F.: 0.8) (— P.F.: 1) – CLASS F
REACTANCES (%). TIME CONSTANTS (MS) – CLASS F / 480 V – P.F. 1
| M4 | M6 | L8 | VL12 | |
|---|---|---|---|---|
| Kcc Short-circuit ratio | 1.24 | 0.67 | 0.89 | 0.96 |
| Xd Direct-axis synchronous reactance unsaturated | 123 | 179 | 156 | 146 |
| Xq Quadrature-axis synchronous reactance unsaturated | 63 | 91 | 79 | 74 |
| T’do No-load transient time constant | 1802 | 1921 | 2024 | 2253 |
| X’d Direct-axis transient reactance saturated | 6.8 | 9.3 | 7.7 | 6.4 |
| T’d Short-circuit transient time constant | 100 | 100 | 100 | 100 |
| X”d Direct-axis subtransient reactance saturated | 4.1 | 5.5 | 4.6 | 3.8 |
| T”d Subtransient time constant | 10 | 10 | 10 | 10 |
| X”q Quadrature-axis subtransient reactance saturated | 7.1 | 9.8 | 8.2 | 7 |
| Xo Zero sequence reactance | 0.28 | 0.38 | 0.32 | 0.27 |
| X2 Negative sequence reactance saturated | 5.65 | 7.73 | 6.43 | 5.44 |
| Ta Armature time constant | 15 | 15 | 15 | 15 |
| Other class F / 480 V data | ||||
| io (A) No-load excitation current AREP | 1.08 | 0.74 | 0.94 | 0.94 |
| ic (A) On-load excitation current AREP | 1.41 | 1.34 | 1.45 | 1.4 |
| uc (V) On-load excitation voltage AREP | 11.3 | 10.8 | 11.6 | 11.2 |
| ms Response time (∆U = 20% transient) | 500 | 500 | 500 | 500 |
| kVA Start (∆U = 20% continuous or ∆U = 30% transient) AREP* | 331 | 306 | ||
| 443 | 657 | |||
| % Transient ∆U (on-load 4/4) AREP – P.F.: 1 LAG | 4.8 | 4.8 | 4.8 | 4.8 |
| W No-load losses | 1696 | 1373 | 1823 | 2253 |
| W Heat dissipation | 2083 | 2163 | 2601 | 3081 |
TRANSIENT VOLTAGE VARIATION 480 V – 60 HZ – CLASS F
3-PHASE SHORT-CIRCUIT CURVES AT NO LOAD AND RATED SPEED (STAR CONNECTION Y)
CLASS F
Influence due to connection
For (Δ) connection, use the following multiplication factor:
– Current value x 1.732.
CLASS F
Influence due to short-circuit
Curves are based on a three-phase short-circuit.
For other types of short-circuit,use the following multiplication factors.
| 3 – phase | 2 – phase L / L | 1 – phase L / N | |
|---|---|---|---|
| Instantaneous (max.) | 1 | 0.87 | 1.3 |
| Continuous | 1 | 1.5 | 2.2 |
| Maximum duration (AREP) | 10 sec. | 5 sec. | 2 sec. |
TWO-BEARING DIMENSIONS – STANDARD
TORSIONAL ANALYSIS DATA
Centre of gravity: Xr (mm), Rotor length: Lr (mm), Weight: M (kg), Moment of inertia: J (kgm 2 ): (4J = MD 2 )
Type| Xr| Lr| M| J
LSAH 44.3 M4| 332.5| 828| 135.5| 0.984
LSAH 44.3 M6| 347| 828| 147| 1.098
LSAH 44.3 L8| 364| 863| 160.5| 1.206
LSAH 44.3 VL12| 413| 963| 206| 1.592
NOTE : Dimensions are for information only and may be subject to
modifications. Contractual 2D drawings can be downloaded from the Leroy-
Somer site, 3D drawing files are available upon request.
The torsional analysis of the transmission is imperative. All values are
available upon request.
SINGLE-BEARING DIMENSIONS – OPTION
| Dimensions (mm) and weight | Coupling | |
|---|---|---|
| Type | L maxi* | LB |
| LSAH 44.3 M4 | 810 | 729 |
| LSAH 44.3 M6 | 810 | 729 |
| LSAH 44.3 L8 | 845 | 764 |
| LSAH 44.3 VL12 | 945 | 864 |
- L maxi = LB + AH maxi + 19
| Flange (mm) | Flex plate (mm) | |
|---|---|---|
| S.A.E. | N | M |
| 4 | 361.95 | 381 |
| 3 | 409.58 | 428.62 |
| 2 | 447.68 | 466.72 |
For torsional analysis data or other request: consult us.
NOTE : Dimensions are for information only and may be subject to modifications. Contractual 2D drawings can be downloaded from the Leroy-Somer site, 3D drawing files are available upon request.
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© 2023 Moteurs Leroy-Somer SAS. The information contained in this brochure is
for guidance only and does not form part of any contract. The accuracy cannot
be guaranteed as Moteurs Leroy-Somer SAS have an ongoing process of
development and reserve the right to change the specification of their
products without notice.
Moteurs Leroy-Somer SAS. Headquarters: Bd Marcellin Leroy, CS 10015, 16915
Angoulême Cedex 9, France. Share Capital: 38,679,664 €, RCS Angoulême 338 567
258.