2022.11 / o
5
Electric Power Generation
Installation and maintenance
GEARLEC - TRACTELEC
GT3 / TF3 / TM3
3472 en -
2 - TECHNICAL
CHARACTERISTICS
2.1 - Operating principle
The GEARLEC or TRACTELEC is a
generator towed by an agricultural tractor. A
gearbox compensates for the difference in
speed between the tractor power take-off
shaft and the alternator. This oil gearbox is
coupled to the alternator.
2.2 - Electrical characteristics
- class H insulation,
- overload capacity: the alternators are
capable of starting electric motors whose
starting current is 1.5 times the rated
alternator current,
- voltage regulation: the voltage is
proportional to the speed (U/F),
- automatic build-up on the remanent
voltage.
2.3 - Mechanical characteristics
- steel frame,
- aluminium or cast iron shields,
- sealed ball bearings (permanently
greased),
- mounting arrangements: two-bearing with
feet, standard splined shaft extension,
- open machine, self-cooling,
- degree of protection: IP23,
- rotation speeds on the tractor power take-
off shaft (see table):
TRACTELEC
Three-phase
50 Hz
Emergency power
KVA
Power take-off shaft speed
(min
-1
)
TF3 / TM3 - 16.5
16.5
429
TF3 / TM3 - 20
19.5
429
TF3 / TM3 - 27.5
27.5
429
TF3 / TM3 - 30
30
429
TF3 / TM3 - 35
35
429
TF3 / TM3 - 40
40
420
TF3 / TM3 - 45
45
420
TF3 / TM3 - 50
50
420
TF3 / TM3 - 55
55
420
TF3 / TM3 - 66
66
420