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Generator Technical Specifications

This document provides specifications for an electrical generator including: - It has a 4-pole winding configuration with 3 phases and 6 leads. - Ratings at different power factors, temperatures, voltages, and speeds. - Electrical characteristics like reactances, time constants, and impedances. - No load and full load excitation voltage and current requirements. - Resistance values for the stator and field windings. - Locked rotor motor starting characteristic curves.

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0% found this document useful (0 votes)
146 views3 pages

Generator Technical Specifications

This document provides specifications for an electrical generator including: - It has a 4-pole winding configuration with 3 phases and 6 leads. - Ratings at different power factors, temperatures, voltages, and speeds. - Electrical characteristics like reactances, time constants, and impedances. - No load and full load excitation voltage and current requirements. - Resistance values for the stator and field windings. - Locked rotor motor starting characteristic curves.

Uploaded by

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© © All Rights Reserved
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FRAME 8124L WINDING 6S

MODELS LL8124L / LL8134L REF: F8104LW6S-0 AUGUST 2002

WINDING DETAILS MECHANICAL DETAILS


Code 6S Insulation class H Standard protection IP23
Phase 3 Leads 6 Overspeed rpm 2250
Pole number 4 Pitch 2/3 Air flow 50Hz/60Hz m3/s 1.60 / 1.92

EXCITATION DETAILS WAVEFORM


Excitation system AREP/PMG Line voltage on no load or balanced linear rated load
AVR model R449 Total harmonic content THC <3.5%
Sustained short-circuit current 300%:10s Telephone influence factor TIF (NEMA) <50
Steady state voltage regulation ±0.5% Telephone harmonic factor THF (IEC) <2%

LINE VOLTAGE No overvoltage tolerance for 440V 50Hz excitation level


Frequency / speed 50Hz / 1500rpm 60Hz / 1800rpm
Star V 380 400 415 440 380 400 416 440 460 480
Delta V 220 230 240 220 230 240

1 2 3 4 6 7 8 9 10 11
RATING Power factor 0.8, Altitude <=1000m
Class H rise BR 125/40 kVA 1325 1325 1325 1250 1260 1335 1375 1455 1525 1590
kW 1060 1060 1060 1000 1008 1068 1100 1164 1220 1272
Class H rise PR 150/40 kVA 1405 1405 1405 1325 1335 1415 1460 1540 1615 1685
kW 1124 1124 1124 1060 1068 1132 1168 1232 1292 1348
Class H rise PR 163/27 kVA 1455 1455 1455 1375 1385 1455 1520 1600 1675 1750
kW 1164 1164 1164 1100 1108 1164 1216 1280 1340 1400
Class F rise BR 105/40 kVA 1200 1200 1200 1125 1135 1200 1240 1310 1370 1430
kW 960 960 960 900 908 960 992 1048 1096 1144

EFFICIENCIES Power factor 0.8


110% Class H BR % 94.8 95.1 95.2 95.4 95.1 95.2 95.3 95.5 95.5 95.6
100% Class H BR % 95.1 95.3 95.4 95.6 95.3 95.4 95.6 95.7 95.7 95.8
75% Class H BR % 95.6 95.7 95.8 95.8 95.7 95.8 95.9 96.0 96.1 96.1
50% Class H BR % 95.9 95.8 95.8 95.3 95.7 95.8 95.9 95.9 96.1 95.9
25% Class H BR % 94.8 94.5 94.3 93.0 94.1 94.2 94.2 94.2 94.2 94.2

CHARACTERISTIC PARAMETERS Reactance base class H BR rating


Kc Short-circuit ratio 0.29 0.35 0.41 0.57 0.22 0.23 0.26 0.28 0.31 0.35
Xd D-Axis synchronous reactance (unsaturated) pu 4.15 3.75 3.48 2.92 4.74 4.53 4.32 4.08 3.92 3.75
X'd D-Axis transient reactance (saturated) pu 0.29 0.27 0.25 0.21 0.34 0.32 0.31 0.29 0.28 0.27
X''d D-Axis sub-transient reactance (saturated) pu 0.162 0.147 0.136 0.114 0.185 0.177 0.169 0.160 0.153 0.147
Xq Q-Axis synchronous reactance (unsaturated) pu 2.49 2.25 2.09 1.75 2.84 2.72 2.59 2.45 2.35 2.25
X''q Q-Axis sub-transient reactance (saturated) pu 0.204 0.184 0.171 0.143 0.232 0.222 0.212 0.200 0.192 0.184
X2 Negative-sequence reactance (saturated) pu 0.184 0.166 0.154 0.129 0.209 0.200 0.191 0.180 0.173 0.166
X0 Zero-sequence reactance (independent) pu 0.038 0.034 0.032 0.026 0.043 0.041 0.039 0.037 0.035 0.034
T'd D-Axis transient time constant ms 218 218
T''d D-Axis sub-transient time constant ms 19 19
T'do D-Axis open-circuit time constant ms 2600 2600
Ta Armature time constant ms 41 41
Tr Voltage recovery time ms < 500 < 500

EXCITATION VOLTAGE AND CURRENT

No load excitation voltage V 11.1 12.7 14.3 17.9 7.9 8.5 9.1 10.1 11.2 12.6
No load excitation current A 1.19 1.36 1.53 1.91 0.84 0.91 0.97 1.08 1.20 1.35
Class H BR excitation voltage V 50.0 50.0 51.0 51.4 42.1 43.5 44.4 46.3 47.7 50.0
Class H BR excitation current A 5.35 5.35 5.45 5.50 4.50 4.65 4.75 4.95 5.10 5.35

WINDING RESISTANCE At 20 o C
Stator line-to-line (series star) Ω 0.0026 Exciter field Ω 9.35
Main field Ω 0.460

According to: IEC 60034, UTE NFC51.111, VDE 0530, BS 4999/5000, NEMA MG 1-33
Values quoted are typical. In line with our policy of continuous improvement, we reserve the right to change specification without notice.
FRAME 8124L WINDING 6S

MODELS LL8124L / LL8134L REF: F8104LW6S-0 AUGUST 2002

LOCKED ROTOR MOTOR STARTING CURVES Power factor 0.4

50 Hz AREP / PMG

380V

400V

415V

440V
25

20
voltage dip %

15

10

0
0 500 1000 1500 2000 2500 3000
kVA

60 Hz AREP / PMG
380V

400V

416V

440V

460V

480V

25

20
voltage dip %

15

10

0
0 500 1000 1500 2000 2500 3000
kVA

According to: IEC 60034, UTE NFC51.111, VDE 0530, BS 4999/5000, NEMA MG 1-33
Values quoted are typical. In line with our policy of continuous improvement, we reserve the right to change specification without notice.
FRAME 8124L WINDING 6S

MODELS LL8124L / LL8134L REF: F8104LW6S-0 AUGUST 2002

THREE-PHASE SHORT-CIRCUIT DECREMENT CURVES No-load excitation at rated speed

400V 50Hz, 480V 60Hz Star

100000

asymmetrical
RMS current (A)

10000
symmetrical

1000
1 10 100 1000 10000
time (ms)

Multiplication Factors

50Hz Voltages 380 400 415 440

Multiplication Factor 0.95 1.00 1.04 1.10

Apply factor up to 2xT'd, remainder of curve unchanged

60Hz Voltages 380 400 416 440 460 480

Multiplication Factor 0.79 0.83 0.87 0.92 0.96 1.00

Apply factor up to 2xT'd, remainder of curve unchanged

Winding Connection Star Delta

Multiplication Factor 1.00 1.73

Apply factor to the complete curve

According to: IEC 60034, UTE NFC51.111, VDE 0530, BS 4999/5000, NEMA MG 1-33
Values quoted are typical. In line with our policy of continuous improvement, we reserve the right to change specification without notice.

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