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GSA ALTERNATOR:
MECHANICAL SPECS
ELECTRICAL SPECS
PARALLEL RUNNING
ALTERNATOR SELECTION
 
MUSTS IN GENSETS
SPECS OF DIESEL ENGINE USED IN GENSETS
SPECS OF CONTROL PANEL USED IN GENSETS

34 TYPE GSA  ALTERNATORS

GENERAL INFORMATION ABOUT 34 TYPE
PRIME POWER RANGE (STANDBY)  30 - 75 KVA (33 - 83 KVA)
SPEED  /  NUMBER OF POLES 1500rpm  /  4 POLES
EXCITATION  /  INSULATION TYPE  SELF REGULATING, BRUSHLESS  / CLASS F
CONFORM STANDARDS VDE 0530; IEC 34-1; TS 3205-3206-3209
AMBIENT TEMPERATURE / ALTITUDE 40°C  /  from sea level to 1000m
PROTECTION  / CONSTRUCTION TYPE  IP 23  /  B3/ B14(Db.B.) - MD35(Sing.B.)

NOTE: All the information given in this page is about 231/400V 3-Phase alternators. If you need information about single-phase alternators or alternators with different voltage and frequence, please inform us

34 TYPE ALTERNATOR RATING TABLE
TYPE

Cos phi=0.8

 Speed RPM
Efficiency %
Drive Power(HP)
GD2-Kpm2
Weight (Kg)
SINGLE BEARING DOUBLE BEARING
PRIME KVA
STANDBY KVA
GSA 343 S/4 GSA 343 S/T4
30
33
1500
85
38.5
1.511
225
GSA 344 S/4 GSA 344 S/T4
36
39.6
1500
87
45
1.811
240
GSA 345 M/4 GSA 345 M/T4
40
44
1500
87
50
2.100
255
GSA 346 M/4 GSA 346 M/T4
50
55
1500
88
62
2.528
285
GSA 34 ML/4 GSA 34 ML/C4 55 60.5 1500 88 68 2.600 305
GSA 347 L/4 GSA 347 L/T4
63
70
1500
88
78
2.960
330
GSA 34 LL/4 GSA 34 LL/T4 66 72.6 1500 89 80 3.100 340
GSA 348 L/4 GSA 348 L/T4 75 83 1500 89 91.6 3.600 360

 

34 SINGLE BEARING 34 DOUBLE BEARING
PART LIST PART LIST
DIMENSIONS DIMENSIONS

 

MOUNTING DETAILS OF 34 TYPE GSA ALTERNATOR WITH SINGLE BEARING

The dimensions of diesel engine's flywheels and its cover use in gensets should comform SAE J620d  and SAE J617c standards. In GSA alternators, the disc mounted to the engine's  flywheel and the adaptor of alternator mounted to the engine's flywheel cover are design according to these standards. The SAE standards of engines that will used in genset should be informed to us while ordering.

If the SAE number of diesel engine's flywheel and its cover are not known, please find the SAE numbers of your engine's flywheel and its cover by comparing the dimensions given in SAE J620d  and SAE J617c standards.

The adaptor and disc combinations of  34 type GSA alternators are given in the table below :

SAE ADAPTOR / DISC COMBINATIONS FOR 34 TYPE SINGLE BEARING GSA ALTERNATORS

ADAPTOR

DISC

4

8  /  10 

3

8  /  10  /  11-1/2  

2

11-1/2  /  14

1

11-1/2  /  14

 

MOUNTING DETAILS OF 34 TYPE GSA ALTERNATOR WITH DOUBLE BEARING

In the gensets with double bearing alternators, the power is transmited to the alternator's rotor  with the coupling mounted to the end of alternator's shaft. The coupling should be elastic to minimise combustion of the diesel engine's effect on the alternator shaft. Gensan produces GK type couplings for mounting GSA alternators to diesel engines. GK 150 coupling is used between 30 - 40 KVA, GK 194 coupling is used between  40 - 75 KVA alternators.

At the end of the alternator shaft, there is a screw hole according to DIN 332 standard for mounting or dismounting purposes of the pulley or the coupling. Mounting of the pulley or the coupling can be done by placing a mounting apparatus to the screw hole. For easier mounting, the coupling or the pulley should be machined to H7 tolerance and heated to 120-150ºC. Avoid any kind of heavy hammering to prevent the ball bearings from damaging.

If the Pulley-Belt System is used for transmission in GSA Alternators which are greater than 50 KVA, special ball bearings must be used. In certain cases please inform us while ordering.

GENSAN ELECTRICAL MACHINES CO.