PURPOSE

Gas turbine generators (GTG) of 1250 and 1500 kW are intended for application in marine conditions as self-contained (both as main ones and the ones during reserve shutdowns) power supply of three-phase alternating current, 50 Hz, 400V, with fine precision of frequency maintenance.

Characteristic features of the gas turbine generators are reliability, simple design, long service life and start from no external source of electric energy.

DESIGN

The gas turbine generator (GTG) is an automatized assembly consisting of a turbo-compressor, a planetary reduction gear and electric generator, type МСК, mounted on a single frame.

The turbo-compressor - operates in an open cycle, single shaft, axial-flow, has an overhanging reverse-flow combustion chamber and an axial-flow turbine. GTG generator and oil system are water-cooled (by sea or fresh water). Cooling water consumption is from 20 to 30 t/hr at a temperature not more than 32 °С.

GTG control system provides automatic and remote control at a single or parallel operation on electric main at full load range from idle run to 110% of rated power.

Parameter

ГТГ-1250-2

ГТГ-1250-2Э

ГТГ-1500-2

Rated power output, kW

1250

1250

1500

Maximum output at generator terminals, kW

1375

1375

1650

Rated voltage, kV

0.4

0.4

0.4

Electrical frequency, Hz

50

50

50

Fuel

diesel Л-0.2-61, GOST 305*

Oil

gas turbine lubricating oil, GOST 10289**

Fuel rate at continuous rating, g/kWh

440

440

420

Gas temperature behind the turbine in rated power mode, °С

465

465

515

GTG operating time until overhaul, hr

50 000

25000

50 000

GTG service life, hr

100 000

50000

100 000

GTG service life until overhaul, years

10

8

10

GTG service life until writing-off, years

20

16

20

Mass of gas turbine generator in operation, t

15.7

15.7

16.7

Overall dimensions, m:

L

B

H

 

6.1

2.34

2.7

 

6.1

2.34

2.7

 

6.3

2.34

2.7

 

* ГТГ-1250-2Э - fuel KOYALI (India) is allowed to use

** ГТГ-1250-2Э - oil О-135 (NATO index) is allowed to use

Gas turbine generators