SIN.CT.017.1

M8B 250 GENERATORE SINCRONO TRIFASE THREE-PHASE SYNCHRONOUS GENERATOR

TECHNICAL DESCRIPTION

SIN.CT.017.0

1

INDEX

1

INDEX ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- 2

2

TECHNICAL INFORMATIONS------------------------------------------------------------------------------------------------------------------------------------ 3

3

4

5

2.1

Compliance with standards--------------------------------------------------------------------------------------------------------3

2.2

Type of construction ----------------------------------------------------------------------------------------------------------------3

2.3

Cooling ---------------------------------------------------------------------------------------------------------------------------------3

2.4

Degree of protection ----------------------------------------------------------------------------------------------------------------3

2.5

Direction of rotation -----------------------------------------------------------------------------------------------------------------3

2.6

Overspeed-----------------------------------------------------------------------------------------------------------------------------3

DESCRIPTION OF COMPONENTS---------------------------------------------------------------------------------------------------------------------------- 3 3.1

Bearings -------------------------------------------------------------------------------------------------------------------------------3

3.2

Rotor Balancing ----------------------------------------------------------------------------------------------------------------------3

3.3

Protection of windings --------------------------------------------------------------------------------------------------------------3

3.4

Terminal box --------------------------------------------------------------------------------------------------------------------------3

EXCITATION SYSTEM----------------------------------------------------------------------------------------------------------------------------------------------- 4 4.1

General---------------------------------------------------------------------------------------------------------------------------------4

4.2

Voltage regulation -------------------------------------------------------------------------------------------------------------------4

4.3

Transient ratings ---------------------------------------------------------------------------------------------------------------------4

4.4

Manual Voltage setting -------------------------------------------------------------------------------------------------------------4

ELECTRICAL CHARACTERISTICS----------------------------------------------------------------------------------------------------------------------------- 4 5.1

Rated power --------------------------------------------------------------------------------------------------------------------------4

5.2

Overloads------------------------------------------------------------------------------------------------------------------------------4

5.3

Parallel operation --------------------------------------------------------------------------------------------------------------------5

5.4

Frequency -----------------------------------------------------------------------------------------------------------------------------5

5.5

Voltages--------------------------------------------------------------------------------------------------------------------------------5

5.6

Voltage waveform -------------------------------------------------------------------------------------------------------------------5

TECHNICAL CHARACTERISTICS MECHANICAL CHARACTERISTICS TECHNICAL DATA OVERALL DRAWING - Type of construction IM B34 (double bearing) OVERALL DRAWING - Type of construction B2 - SAE (single bearing) DRAWING for TORSIONAL VIBRATION ANALYSIS - Type of construction IM B34 (double bearing) and B2 - SAE (single bearing)

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SIN.CT.017.0

2 2.1

TECHNICAL INFORMATIONS Compliance with standards

The alternators have been designed in compliance with: IEC 34-1, CEI 2-3, BS 4999-5000, VDE 0530, NF 51-100, OVE M-10 2.2

Type of construction

The standard types of construction are TWO BEARING (B3/B14) and SINGLE BEARING (B2) with flexplate coupling in compliance with IEC 34-7. Other construction forms are available on request. 2.3

Cooling

The type of cooling is IC 01 in compliance with IEC 34-6 (self ventilated cooling air taken from surrounding ambient). Fans are radial type; air inlet is from opposite drive end side. 2.4

Degree of protection

The standard degree of protection is IP21 in compliance with IEC 34-5. Better protection degrees can be supplied on request (with reduction in output). 2.5

Direction of rotation

Standard generators are proper for clockwise direction of rotation; when operating anticlockwise, the output of generators has to be sligthly reduced. 2.6

Overspeed

The permissible overspeed is 1.25 times the rated speed (at 60 Hz).

3 3.1

DESCRIPTION OF COMPONENTS Bearings

Ball bearings are used. The N.D.E. bearing is sealed type. 3.2

Rotor Balancing

The rotor is balanced dynamically with a half key (for 2 bearing generators). 3.3

Protection of windings

The generators are tropicalised, with special vacuum impregnation process of the windings. On request the additional treatment for damp-saline environment is available. 3.4

Terminal box

The generators are provided with large terminal box suitable for easy connection of output terminals. Standard generators are provided with 12 leads (9 terminals).

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SIN.CT.017.0

4 4.1

EXCITATION SYSTEM General

The standard generators are provided with Automatic Voltage Regulator (AVR) mounted inside the terminal box. The Automatic Voltage Regulator is proper for voltage control in single operation. The voltage regulator is provided with trimmers for stability and voltage settings and is provided with internal deexcitation circuits in case of operation at low speed. 4.2

Voltage regulation

The voltage regulation is within +/- 1% with 3-phase balanced load from no load up to full load, with power factor between 0.8 and 1. 4.3

Transient ratings

The voltage drop due to application of full load at 0.8 power (lagging) is about 18 %: voltage recovers to within +/- 3% of steady state value in less than 0.8 s. 4.4

Manual Voltage setting

The voltage can be set within +/- 5% of the rated value by means of internal trimmer inside the AVR.

5 5.1

ELECTRICAL CHARACTERISTICS Rated power

The rated power of the machine is referred to the following conditions: - balanced non-deforming load - ambient temperature not over 40 C - altitude below 1000 m. above sea level - continuous duty - power factor 0.8 For different operating conditions, multiply the catalogue ratings by the factors K1. K2. K3. as specified in following table: Temp. ambiente / Ambient temp. (°C)

30

35

40

45

50

55

k1 factor

1.04

1.02

1

0.96

0.92

0.88

Altitudine / Altitude (m.)

1000

1500

2000

2500

3000

/

1

0.96

0.93

0.9

0.86

/

1.0

0.8

0.7

0.6

0.5

0.3

1

1

0.93

0.88

0.84

0.82

k2 factor Cosϕ / Power Factor k3 factor 5.2

Overloads

The following overloads are allowed: 10 % for 1 hour 15 % for 10 minutes 30 % for 4 minutes Such overloads must be occasional and followed by a sufficient time at reduced load to allow cooling of the generator. 4 / 13

SIN.CT.017.0 5.3

Parallel operation

When generators are required to operate in parallel with other generators, they must be required with proper Excitation control devices (optional). 5.4

Frequency

The generators can operate at 50 and 60 Hz. 5.5

Voltages

Standard generators M8B 250 are supplied with 12 leads / 9 terminals, and they are proper for following voltages: series star connection: star parallel connection:

380 – 400 – 415 V 208 – 220 V

50 Hz 50 Hz

450 – 480 V 208 – 240 V

60 Hz 60 Hz

On request generators with special voltages and connections can be supplied. 5.6

Voltage waveform

The line waveform with the machine unloaded or supplying a balanced non 3-phase load is sinusoidal with a residual harmonic content below 5%.

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SIN.CT.017.0

TECHNICAL CHARACTERISTICS

MECHANICAL CHARACTERISTICS

TECHNICAL DATA

OVERALL DRAWING - Type of construction IM B34 (double bearing)

OVERALL DRAWING - Type of construction B2 - SAE (single bearing)

DRAWING for TORSIONAL VIBRATION ANALYSIS Type of construction IM B34 (double bearing) and B2 - SAE (single bearing)

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SIN.CT.017.0

GENERATORE SINCRONO TRIFASE THREE-PHASE SYNCRONOUS GENERATOR

M8B 250 50 Hz-1500 rpm / 60 Hz-1800 rpm ISOLAMENTO - INSULATION CLASS

H H IP21 0,8 2250 RPM 12

RISCALDAMENTO - TEMPERATURE RISE PROTEZIONE - PROTECTION FATTORE DI POTENZA - POWER FACTOR SOVRAVELOCITA' - OVERSPEED NUMERO DI TERMINALI - NUMBER OF TERMINALS

CODICE AVVOLGIMENTO WINDING CODE

M0

CARATTERISTICHE ELETTRICHE - TECHNICAL CHARACTERISTICS

TENSIONE VOLTAGE

250 SA 4

250 SB 4

250 MA 4

250 MB 4

250 LA 4

250 LB 4

Stella serie Series star Stella parallelo Parallel star kVA kW eff.% kVA kW eff.% kVA kW eff.% kVA kW eff.% kVA kW eff.% kVA kW eff.%

SERVIZIO CONTINUO CONTINUOUS DUTY 40°C 50 Hz - 1500 rpm 400 415

380

100.0 80.0 89.2 125.0 100.0 89.4 150.0 120.0 90.3 180.0 144.0 91.2 200.0 160.0 91.4 240.0 192.0 91.6

100.0 80.0 89.3 125.0 100.0 89.6 150.0 120.0 90.4 180.0 144.0 91.4 200.0 160.0 91.6 250.0 200.0 91.8

SERVIZIO CONTINUO CONTINUOUS DUTY 40°C 60 Hz - 1800 rpm 440 460

440

416

480

208

220

208

220

231

240

100.0 80.0 89.4 125.0 100.0 89.7 150.0 120.0 90.5 180.0 144.0 91.5 200.0 160.0 91.7 235.0 188.0 91.9

100.0 80.0 89.3 125.0 100.0 89.6 150.0 120.0 90.4 180.0 144.0 91.3 200.0 160.0 91.6 220.0 176.0 91.8

110.0 88.0 89.4 130.0 104.0 89.6 160.0 128.0 90.4 200.0 160.0 91.4 220.0 176.0 91.6 260.0 208.0 91.9

115.0 92.0 89.8 140.0 112.0 90.0 170.0 136.0 90.7 210.0 168.0 91.7 230.0 184.0 91.9 275.0 220.0 92.2

120.0 96.0 90.1 145.0 116.0 90.1 175.0 140.0 90.8 215.0 172.0 91.9 240.0 192.0 92.1 287.5 230.0 92.3

125.0 100.0 90.2 155.0 124.0 90.2 185.0 148.0 90.9 225.0 180.0 92.0 250.0 200.0 92.3 300.0 240.0 92.4

CARATTERISTICHE MECCANICHE - MECHANICAL CHARACTERISTICS

PESO WEIGHT

kg

M8B 250 SA 4 410

M8B 250 SB 4 470

M8B 250 MA 4 530

M8B 250 MB 4 590

M8B 250 LA 4 660

M8B 250 LB 4 710

MOM. D'INERZIA INERTIA

kgm2

1,14

1,305

1,48

1,77

1,97

2,156

Per l’esecuzione monosopporto aggiungere i valori del giunto prescelto - For single bearing build add the values of the selected coupling Le potenze indicate sono riferite alle seguenti condizioni: - carico trifase equilibrato non distorcente - temperatura ambiente non superiore a 40°C - altitudine non superiore a 1000 m.s.l.m. - fattore di potenza cosϕ=0,8

The ratings are referred to the following conditions: - three phase symmetrical non-deforming load - ambient temperature not over 40°C - altitude below 1000 m. a.s.l. - minimum power factor 0,8

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SIN.CT.017.0

GENERATORE SINCRONO TRIFASE THREE-PHASE SYNCRONOUS GENERATOR

M8B 250 60 Hz-1800 rpm ISOLAMENTO - INSULATION CLASS

H H IP21 0,8 2250 RPM 12

RISCALDAMENTO - TEMPERATURE RISE PROTEZIONE - PROTECTION FATTORE DI POTENZA - POWER FACTOR SOVRAVELOCITA' - OVERSPEED NUMERO DI TERMINALI - NUMBER OF TERMINALS

CARATTERISTICHE ELETTRICHE - TECHNICAL CHARACTERISTICS SERVIZIO CONTINUO CONTINUOUS DUTY 40°C 60 Hz - 1800 rpm 380 416 440 Stella serie TENSIONE Series star 190 208 220 Stella parallelo VOLTAGE Parallel star 115 120 125 kVA 92 96 100 250 SA 4 kW 89,8 90,1 90,2 eff,% 140 145 155 kVA 112 116 124 250 SB 4 kW 90 90,1 90,2 eff,% 170 175 185 kVA 136 140 148 250 MA 4 kW 90,7 90,8 90,9 eff,% 210 215 225 kVA 168 172 180 250 MB 4 kW 91,7 91,9 92 eff,% 230 240 250 kVA 184 192 200 250 LA 4 kW 91,9 92,1 92,3 eff,% 275 287,5 300 kVA 220 230 240 250 LB 4 kW 92,2 92,3 92,4 eff,% CARATTERISTICHE MECCANICHE - MECHANICAL CHARACTERISTICS M8B 250 SA 4 M8B 250 SB 4 M8B 250 MA 4

CODICE AVVOLGIMENTO WINDING CODE

R3

SERVIZIO STAND-BY STAND-BY DUTY 27°C 60 Hz - 1800 rpm 416 440

460

380

460

230

190

208

220

230

116 93 90 144 115 90 172 138 90,7 210 118 91,7 232 186 92 279 223 92,2

122 98 89,6 148 119 89,8 180 144 90,5 223 178 91,5 244 195 91,7 292 233 92,0

127 102 89,9 154 123 89,9 186 148 90,6 228 182 91,7 254 204 91,9 305 244 92,1

133 106 90 164 131 90 196 157 90,7 239 191 91,8 265 212 92,1 318 254 92,2

122 98 89,8 151 121 89,8 181 145 90,5 221 124 91,5 244 195 91,8 293 234 92,0

M8B 250 MB 4

M8B 250 LA 4

M8B 250 LB 4

PESO WEIGHT

kg

410

470

530

590

660

710

MOM, D'INERZIA INERTIA

kgm2

1,14

1,305

1,48

1,77

1,97

2,156

Per l’esecuzione monosopporto aggiungere i valori del giunto prescelto - For single bearing build add the values of the selected coupling Le potenze indicate sono riferite alle seguenti condizioni: - carico trifase equilibrato non distorcente - temperatura ambiente non superiore a 40°C - altitudine non superiore a 1000 m.s.l.m. - fattore di potenza cosϕ=0,8 Le potenze in servizio STANDBY sono inoltre riferite a condizioni ambientali di 27 C. Le potenze in servizio STANDBY si riferiscono ad alimentazione continua del carico per la durata di ogni possibile interruzione di rete. In tali condizioni di servizio non sono ammessi sovraccarichi.

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The ratings are referred to the following conditions: - three phase symmetrical non-deforming load - ambient temperature not over 40°C - altitude below 1000 m. a.s.l. - minimum power factor 0,8 The ratings given in above table are referred to altitude below 1000 m a.s.l., and to three phase symmetrical non-deforming load. STANDBY ratings are based on ambient temperature max. 27 C, for continuous supply of loads for any utility power failure. No overloads are allowed.

SIN.CT.017.0

GENERATORE SINCRONO TRIFASE THREE-PHASE SYNCRONOUS GENERATOR

M8B 250 50 Hz-1500 rpm

DATI TECNICI - TECHNICAL DATA

TENSIONE VOLTAGE

TIPO SIZE

POTENZA RATING

RENDIMENTO EFFICIENCY

REATTANZE REACTANCES

COSTANTI DI TEMPO TIME CONSTANTS

kVA kW ∆t cl.H

4/4 %

3/4 %

2/4 %

rcc

XD %

Xq %

x’d %

x”d %

x”q %

x2 %

x0 %

T’do [s]

T’d [ms]

T”d [ms]

Ta [ms]

250 SA 4 250 SB 4 250 MA 4 250 MB 4 250 LA 4 250 LB 4

100 125 150 180 200 240

80 100 120 144 160 192

89,2 89,4 90,3 91,2 91,4 91,6

89,4 89,7 90,6 91,5 91,7 91,9

89,3 89,6 90,5 91,3 91,5 91,7

0,44 0,41 0,42 0,41 0,37 0,40

300 310 310 300 320 310

145 150 150 145 155 150

28,7 28,8 27 26,5 25,5 25,5

16 16,2 15 13,9 12,1 12,6

17,8 18 16,6 14,1 16,8 14,2

16,9 17,1 15,8 13,3 15,8 13,4

3,3 3,3 3,2 2,7 2,6 3

0,75 0,79 0,95 0,95 1,00 1,02

70 75 90 90 95 98

11 11 11 11 11 11

12 12 12 13 13 13

250 SA 4 250 SB 4 250 MA 4 250 MB 4 250 LA 4 250 LB 4

100 125 150 180 200 250

80 100 120 144 160 200

89,3 89,6 90,4 91,4 91,6 91,8

89,6 89,9 90,7 91,7 91,8 92,0

89,5 89,8 90,6 91,6 91,8 91,9

0,49 0,45 0,47 0,45 0,42 0,42

270 280 280 270 290 290

130 135 135 130 140 140

26 26 24,5 24 23 24,5

14,5 14,5 13,5 12,5 10,8 11,5

16,1 16,1 14,9 13,9 12 12,7

15,3 15,3 14,2 13,2 11,4 12,1

3 3 2,8 2,4 2,3 2,8

0,75 0,79 0,95 0,95 1,00 1,02

70 75 90 90 95 98

11 11 11 11 11 11

12 12 12 13 13 13

415V - Y 208V - YY

250 SA 4 250 SB 4 250 MA 4 250 MB 4 250 LA 4 250 LB 4

100 125 150 180 200 235

80 100 120 144 160 188

89,4 89,7 90,5 91,5 91,7 91,9

89,7 89,9 90,7 91,7 91,9 92,1

89,6 89,8 90,6 91,6 91,8 92,0

0,52 0,50 0,52 0,50 0,47 0,44

250 260 260 250 270 260

120 125 125 120 130 125

24,1 24,2 22,1 21,2 21 21,5

13,5 13,5 12,5 11,7 10,1 10,5

14,9 14,9 13,9 12,9 11,3 11,7

14,2 14,2 13,2 12,3 10,7 11,1

2,7 2,7 2,6 2,3 2,2 2,6

0,75 0,79 0,95 0,95 1,00 1,02

70 75 90 90 95 98

11 11 11 11 11 11

12 12 12 13 13 13

440V – Y 220V - YY

250 SA 4 250 SB 4 250 MA 4 250 MB 4 250 LA 4 250 LB 4

100 125 150 180 200 220

80 100 120 144 160 176

89,3 89,6 90,4 91,3 91,6 91,8

89,6 89,8 90,7 91,6 91,9 92,0

89,5 89,8 90,6 91,5 91,8 91,9

0,6 0,57 0,6 0,57 0,53 0,48

225 230 230 225 240 210

105 110 110 105 115 98

21,5 21,5 20,2 19,7 19 17,8

12 12 11,2 10,3 9 8,5

13,4 13,4 12,4 11,5 10 9,5

12,7 12,7 11,8 10,9 9,5 9

2,3 2,3 2,3 2,1 2 1,8

0,75 0,79 0,95 0,95 1,00 1,02

70 75 90 90 95 98

11 11 11 11 11 11

12 12 12 13 13 13

380V - Y

400V - Y

I valori riportati nella tabella sono riferiti al codice avvolgimento standard cod.M0 Values in above table are referred to standard connection cod.M0

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SIN.CT.017.0

GENERATORE SINCRONO TRIFASE THREE-PHASE SYNCRONOUS GENERATOR

M8B 250 60 Hz-1800 rpm

DATI TECNICI - TECHNICAL DATA

TENSIONE VOLTAGE

TIPO SIZE

POTENZA RATING

RENDIMENTO EFFICIENCY

REATTANZE REACTANCES

COSTANTI DI TEMPO TIME CONSTANTS

kVA kW ∆t cl.H

4/4 %

3/4 %

2/4 %

rcc

XD %

Xq %

x’d %

x”d %

x”q %

x2 %

x0 %

T’do [s]

T’d [ms]

T”d [ms]

Ta [ms]

416V – Y 208V – YY

250 SA 4 250 SB 4 250 MA 4 250 MB 4 250 LA 4 250 LB 4

110 130 160 200 220 260

88 104 128 160 176 208

89.4 89.6 90.4 91.4 91.6 91.9

89.6 89.8 90.7 91.7 91.9 92.1

89.5 89.8 90.6 91.7 91.9 92.0

0.39 0.40 0.40 0.38 0.36 0.35

330 325 330 335 350 340

160 155 160 165 170 165

32 30.2 27.5 27.0 27.5 28.5

17.8 16.8 16 15.8 13.5 13.8

19.6 18.6 17.8 17.2 14.9 15.4

18.7 17.7 16.9 16.5 14.2 14.6

3.4 3.3 3.2 3.0 2.9 3.4

0.75 0.79 0.95 0.95 1.00 1.02

70 75 90 90 95 98

11 11 11 11 11 11

12 12 12 13 13 13

440V – Y 220V – YY

250 SA 4 250 SB 4 250 MA 4 250 MB 4 250 LA 4 250 LB 4

115 140 170 210 230 275

92 112 136 168 184 220

89.8 90.0 90.7 91.7 91.9 92.2

90.1 90.2 90.9 91.9 92.0 92.4

89.8 90.1 90.8 91.8 91.9 92.2

0.43 0.42 0.44 0.41 0.38 0.37

310 310 315 315 330 310

145 145 150 150 160 150

29.5 29.0 28.5 26.0 26.0 26.5

16.5 16.1 15.2 14.4 12.4 12.5

18.5 18.1 16.9 16.1 13.8 14.1

17.5 17.1 16.1 15.3 13.1 13.3

3.2 3.1 3.1 2.9 2.8 2.7

0.75 0.79 0.95 0.95 1.00 1.02

70 75 90 90 95 98

11 11 11 11 11 11

12 12 12 13 13 13

460V – Y 230V – YY

250 SA 4 250 SB 4 250 MA 4 250 MB 4 250 LA 4 250 LB 4

120 145 175 215 240 287

96 116 140 172 192 230

90.1 90.3 90.8 91.9 92.1 92.3

90.4 90.5 91.0 92.1 92.3 92.5

90.3 90.4 90.9 92.0 92.2 92.3

0.43 0.42 0.44 0.42 0.38 0.37

310 310 310 305 330 310

145 145 145 140 160 150

29.5 29.0 28.2 25.5 26.0 26.5

16.5 16.1 15.0 14.1 12.4 12.5

18.5 18.1 16.7 15.7 13.8 14.1

17.5 17.1 15.9 14.9 13.1 13.3

3.2 3.1 3.0 2.9 2.8 2.7

0.75 0.79 0.95 0.95 1.00 1.02

70 75 90 90 95 98

11 11 11 11 11 11

12 12 12 13 13 13

480V – Y 240V – YY

250 SA 4 250 SB 4 250 MA 4 250 MB 4 250 LA 4 250 LB 4

125 155 185 225 250 300

100 124 148 180 200 240

90.2 90.5 90.9 92.0 92.3 92.4

90.5 90.8 91.1 92.3 92.5 92.6

90.4 90.7 90.9 92.3 92.4 92.5

0.43 0.43 0.44 0.42 0.38 0.37

310 315 310 305 330 310

145 150 145 140 160 150

29.5 29.5 28.2 25.5 26.0 26.5

16.5 16.3 15.0 14.1 12.4 12.5

18.5 18.3 16.7 15.7 13.8 14.1

17.5 17.3 15.9 14.9 13.1 13.3

3.2 3.2 3.0 2.9 2.8 2.7

0.75 0.79 0.95 0.95 1.00 1.02

70 75 90 90 95 98

11 11 11 11 11 11

12 12 12 13 13 13

I valori riportati nella tabella sono riferiti al codice avvolgimento standard cod.M0 Values in above table are referred to standard connection cod.M0

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SIN.CT.017.0

NOTE

Con riserva di eventuali modifiche Changes reserved

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