7/31/2019 Emergency Dg Set

1/26

EMERGENCY DG SETMake :- Cummins India Ltd.Model:- VTA 28 G

Capacity:- 500 KVASpeed :- 1500 RPMApplication :- Genset.

7/31/2019 Emergency Dg Set

2/26

Safety Devices

Low lube Oil Safety Control

High Water Temperature Safety Control

Over Speed safety Control

Fuel Oil Level Low

Lube oil level Low

7/31/2019 Emergency Dg Set

3/26

Engine Performance parameters

Normal LO Press.at Idle speed :- 1.1-2.4 kg/cm2

Normal LO Press.at Rated speed:- 3.4-6.2 kg/cm2

Oil Temp. Normally Should be between 820C -1070c

A Water Temperature of 78o C to 95oC is the bestworking temperature.

7/31/2019 Emergency Dg Set

4/26

Engine Start up process

Selector Switch :- L/R Switch S16

Start Push Button :- S1

24 V DC +ve will extend to Magnetic Starterthrough i) NC Contact of K21, ie. Open after

Voltage & frequency build up and no generatorfault. ii) NC contact of K23, ie. No Engine fault.(

Low LO, High WT, Over Speed Safety Controls)iii) K26A, ie. No Stop Comand.

7/31/2019 Emergency Dg Set

5/26

Stop Command

Manual Stop:-Press Stop PB from Local orremote panel.

Auto Stop :- i) If any generator fault.ii) If 24 V DC Supply Fail

iii) Incomplete start after

preset time.

iV) If any Engine fault.

7/31/2019 Emergency Dg Set

6/26

Generator Protections

Inverse time Over current and earth fault:Relay type CDG31 , Designation 51.

Definite time over current :- relay typeCTU12, designation 51L.

Over voltage :- Relay type VTU21,designation 59

Restricted Earth Fault:- Relay type CAG14,Designation 64.

7/31/2019 Emergency Dg Set

7/26

Engine Inspection Interval

A-Check :- Daily

B- Check :- Every 300 Hrs/6 Months

C- Check :- Every 1500 Hrs/1 Year. D- check :- Every 500 Hrs./2 Years.

E- Check :- Every 8000 Hrs/4 Years.

Major Overhauling is estimated at3(Three) Echecks or 25000 hrs.whichever earlier.

7/31/2019 Emergency Dg Set

8/26

A- Maintenance Check

Check engine Oil level.

Drain sediment from fuel tank.

Clean air pre cleaner dust pan.

Check air cleaner restriction.

Check coolant level.

7/31/2019 Emergency Dg Set

9/26

B-Maintenance Check

Repeat A check Change Lube Oil. Change engine oil full flow filters. Change supper bypass filter. Change fuel oil filters. Clean fuel tank breather.

Check air piping. Change water CR element and CR plate. Check/adjust radiator belt.

7/31/2019 Emergency Dg Set

10/26

C- Maintenance Check

Repeat A&B Check.

Adjust injectors & Valves.

Clean Radiator externals.

Check fan hub and water pump.

Tighten exhaust manifold cap screw.

7/31/2019 Emergency Dg Set

11/26

D Maintenance check

Repeat A,B and C check.

Clean and calibrate injectors.

Check fuel pump calibration. Clean Turbocharger wheel and diffuser.

Check Turbocharger bearing clearance.

Tighten exhaust manifold nuts and cap screw.

Check crank shaft end clearance.

Check fan hub & drive pully.

7/31/2019 Emergency Dg Set

12/26

Emergency Diesel Generator

7/31/2019 Emergency Dg Set

13/26

7/31/2019 Emergency Dg Set

14/26

7/31/2019 Emergency Dg Set

15/26

7/31/2019 Emergency Dg Set

16/26

7/31/2019 Emergency Dg Set

17/26

7/31/2019 Emergency Dg Set

18/26

7/31/2019 Emergency Dg Set

19/26

7/31/2019 Emergency Dg Set

20/26

7/31/2019 Emergency Dg Set

21/26

7/31/2019 Emergency Dg Set

22/26

7/31/2019 Emergency Dg Set

23/26

7/31/2019 Emergency Dg Set

24/26

7/31/2019 Emergency Dg Set

25/26

7/31/2019 Emergency Dg Set

26/26

Thank you