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--PM exciter
b Inspect/clean rotor and stator
--high voltage test (insulation resistance test)
c Blow out system
d Troubleshoot problems
--open or shorted diodes
--grounded or open rotor
--visually inspect for cracks
--exciter field clearance
--burned out unit
--dirty commentator
--worn brushes
--loose connections
--exciter circuit breaker

Reference:
Wildi, Theodore (2004). Electrical Machines, Drives, and Power Systems, 6th Edition. Upper Saddle
River, New Jersey: Prentice-Hall. Chapter 16

EGSA (2002). On-Site Power Generation Reference Book, Fourth Edition. Boca Raton, Florida:
Electrical Generating Systems Association. Chapters 1 – 6

EGSA (2015). On-Site Power Generation Reference Book, Fifth Edition. Boca Raton, Florida:
Electrical Generating Systems Association. Chapters 23 - 25

Task 22) Perform load test on generators/alternators

a Identify types of load tests
b Resistive and reactive
c Determine cable sizing
d Determine size of load bank
e Identify location for connections
f Identify location for load bank
g Determine voltage requirement for load bank
h Determine fan rotation for cooling requirements
i Determine remote source for fan power
j Determine test requirements
--block load vs. step loading
--duration
--site DE rates
--frequency and voltage recovery rates

Reference:
Wildi, Theodore (2004). Electrical Machines, Drives, and Power Systems, 6th Edition. Upper Saddle
River, New Jersey: Prentice-Hall. Chapter 16

EGSA (2015). On-Site Power Generation Reference Book, Fifth Edition. Boca Raton, Florida:
Electrical Generating Systems Association. Chapters 43

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