Standards Quality Assurance Excitation and Voltage Regulators No Load Excitation Voltage (V) 13 V Full Load Excitation Voltage (V) 51 V AVR Type AVR Power AS540 Self-Excited / Aux winding Voltage Regulation ± 1% Excitation System S0L2-M1 Wdg.311 / 711 (Single Phase) - Technical Data Sheet Stamford industrial alternators meet the requirements of IEC EN 60034 and the relevant section of other international standards such as BS5000, VDE 0530, NEMA MG1-32, IEC34, CSA C22.2-100 and AS1359. Other standards and certifications can be considered on request. Alternators are manufactured using production procedures having a quality assurance level to BS EN ISO 9001. Page 1 S0L2-M1_A0xxxxxx Rev.D_31.10.2018
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S0L2-M1 Wdg.311 / 711 (Single Phase) - Technical Data Sheet · Page 9 S0L2-M1_A0xxxxxx Rev.D_31.10.2018. De-Rates All values tabulated above are subject to the following reductions:
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Standards
Quality Assurance
Excitation and Voltage Regulators
No Load Excitation Voltage (V) 13 V
Full Load Excitation Voltage (V) 51 V
AVR Type AVR Power
AS540 Self-Excited / Aux winding
Voltage Regulation ± 1%
Excitation System
S0L2-M1 Wdg.311 / 711 (Single Phase) - Technical Data Sheet
Stamford industrial alternators meet the requirements of IEC EN 60034 and the relevant section of other
international standards such as BS5000, VDE 0530, NEMA MG1-32, IEC34, CSA C22.2-100 and AS1359. Other
standards and certifications can be considered on request.
Alternators are manufactured using production procedures having a quality assurance level to BS EN ISO 9001.
Saturated Values in Per Unit at Base Ratings and Voltages
Unsaturated Values in Per Unit at Base Ratings and Voltages
110 115 120 110 115 120
220 / 110 230 / 115 240 / 120 220 / 110 230 / 115
Double Layer Concentric
Two Thirds
12
240 / 120
4
EN 61000-6-2 & EN 61000-6-4, refer to factory for others
NO LOAD < 2.5% NON-DISTORTING LINEAR LOAD < 5.0%
1/Xd
3.9477
50Hz 60Hz
S0L2-M1 Wdg.311 / 711 (Single Phase)
Class H
IP23
Page 2 S0L2-M1_A0xxxxxx Rev.D_31.10.2018
Resistances in Ohms (Ω) at 220C
Cooling Air 0.105 m³/sec (50Hz) 0.126 m³/sec (60Hz)
Bearing
2250 RPM for two minutes
N/A
Ball Bearing, 6305-2RS1
Single Bearing
121.1 kg
159 kg
930X590X760 mm
49 kg
All alternator rotors are dynamically balanced to better than
43.4 kg
Exciter Stator Winding Resistance 15.42 Ω
Exciter Rotor Winding Resistance 0.092 Ω per phase
Zero Sequence Resistance (R0)
Packing Crate Size
Maximum Over Speed
Bearing Drive End
Bearing Non-Drive End
Shaft and Keys
Weight Complete Alternator
Weight Wound Stator
Weight Wound Rotor
Moment of Inertia
Shipping weight in a Crate
0.159 kgm2
0.278 Ω
5.160 Ω
BS6861: Part 1 Grade 2.5 for minimum vibration in operation.
S0L2-M1 Wdg.311 / 711 (Single Phase)
0.241 Ω
Stator Winding Resistance (Ra)
Rotor Winding Resistance (Rf)
Positive Sequence Resistance (R1)
Negative Sequence Resistance (R2)
0.241 Ω
0.193 Ω per phase series star connected
0.747 Ω
Aux Winding Resistance (with
winding 711 only)
Mechanical data
Page 3 S0L2-M1_A0xxxxxx Rev.D_31.10.2018
S0L2-M1 Wdg.311 / 711 (Single Phase)
Double Delta Efficiency Curves with 0.8PF
50Hz Curves 60Hz Curves
Page 4 S0L2-M1_A0xxxxxx Rev.D_31.10.2018
S0L2-M1 Wdg.311 / 711 (Single Phase)
Double Delta Efficiency Curves with 1.0PF
50Hz Curves 60Hz Curves
Page 5 S0L2-M1_A0xxxxxx Rev.D_31.10.2018
Locked Rotor Motor Starting Curves
S0L2-M1 Wdg.311 / 711 (Single Phase)
Transient Voltage Dip Scaling Factor Transient Voltage Rise Scaling Factor
0.8
0.9
1.0
PF
< 0.5
0.5
0.6
0.90
0.85
0.83
0.80
Factor
For voltage rise multiply voltage dip by 1.251.00
0.97
0.93
0.7
50Hz
60Hz
Page 6 S0L2-M1_A0xxxxxx Rev.D_31.10.2018
50Hz 60Hz
Voltage Factor Voltage Factor
220V X 1.00 220V X 1.00
230V X 1.05 230V X 1.05
240V X 1.09 240V X 1.09
S0L2-M1 Wdg.311 / 711 (Single Phase)
Double Delta Short Circuit Decrement Curve
Sustained Short Circuit = 240.5 Amps
Sustained Short Circuit = 231 Amps
Note: Applicable only for Winding 711 ( Auxiliary winding).
Winding 311 (no Auxiliary winding) will not provide short circuit capability.
The sustained current value is constant irrespective of
voltage level
50Hz
60Hz
Note 1The following multiplication factors should be used toadjust the values from curve between time 0.001seconds and the minimum current point in respect ofnominal operating voltage :