generator 1-30.pdf
DESCRIPTION
weldingTRANSCRIPT
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Diesel Generator
Operation & Maintenance
Level- (I)
Presented By- A.N.U.Wijesena
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(National Fire Protection Association)
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(A) Key components of Emergency Backup
(B) Operating Recommendations
(C) Fluid Testing & Analysis(D) Maintenance –Beyond the basics
(E) Generator Rating & Applications
(F) Preventive Maintenance(G) Safety Precautions
(H) User Negligence
(I ) Compliance Standards
Key components of Emergency backup
AC Generator
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(A) Key components of Emergency
Backup
Fuel System
/ Air System
•Components Identification
•Automatic Voltage Regulator•Transfer Switch Components•Engine
•Lubrication System•Cooling System•Fuel System
•DC Electrical System•Exhaust System
•Air System ENGINE ALTERNATOR
CONTROL PANEL
FUEL TANK WITH
SKID
BATTERIES
RADIATOR
BASIC IDENTIFICATION
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A.C Generator (Alternator)
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Prime Mover (Engine)
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Automatic Voltage Regulator
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Voltage
Regulator
Main Stator
Main RotorExciter Rotor
Rotating
Diodes Bearing
Mech.
Power
Input
(Engine)
Exciter Stator
Basic Architecture of a
Alternator
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Types of Automatic Voltage Regulators
(AVR)Stamford Alternator Series AVR Models:SX-460,SX-421,SX-440, MX-321,MX-341,
LEROY SOMER Series AVR Models:R-230(250), R-438, R-448,
MARATHON Series AVR Models: SE-350,
Basler Series AVR Models: AVC63-12B1(VR6)
Denyo Series AVR Models: AN-5 203
Cummins PCC AVR Models: 300-4306
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Stamford Alternator Series AVR Models:SX-460,SX-440, MX-321,MX-341,
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Physical Appearance
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Physical Appearance
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LEROY SOMER Series AVR Models:R-230(250), R-438, R-448, R449
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Physical Appearance
R-230(250)
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Physical Appearance
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MARATHON Series AVR Models: SE-350,
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Basler Series AVR Models: AVC63-12B1(VR6),
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Denyo Series AVR Models: AN-5 203
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Cummins PCC AVR Models: 300-4306
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Possible causes to AVR failure
• Transient loads exceeding generator capacity
• Direct Lightning hits• Inconsistence of winding insulation Resistance• Improper handling in a Manual C/O operation
• Lack of service on time• Excessive imbalance Kvar in Synchronization systems• Harmonics & waveform distortions in the load
• Short circuit or Overloading• Unbalanced Load
• Over excitation• Manufacturing defects• Environmental conditions
• Excessive vibration
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Occupational Safety and Health Administration (USA-Department of Labor)
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