Download - Emergency Dg Set
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EMERGENCY DG SETMake :- Cummins India Ltd.Model:- VTA 28 G
Capacity:- 500 KVASpeed :- 1500 RPMApplication :- Genset.
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Safety Devices
Low lube Oil Safety Control
High Water Temperature Safety Control
Over Speed safety Control
Fuel Oil Level Low
Lube oil level Low
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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C- Maintenance Check
Repeat A&B Check.
Adjust injectors & Valves.
Clean Radiator externals.
Check fan hub and water pump.
Tighten exhaust manifold cap screw.
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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.
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Emergency Diesel Generator
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Thank you