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Section 4: Engine Generator Instrumentation and Controls and
Auxiliary Support Systems

Task 24) Define theory and principles of basic engine protection systems

a Identify common types of analog signals
b Identify common types of digital/discrete signals
c Identify common types of pressure measurement devices in engine driven systems
d Identify common types of temperature measurement devices in engine driven systems
e Identify common types of fluid level measurement devices in engine driven systems
f Identify common types of vibration measurement/protective devices in engine driven systems
g Identify common types of speed sensing/measurement devices in engine driven systems
h Control logic parameters for alarms and shutting do systems

Reference:
EGSA (2015). On-Site Power Generation Reference Book, Fifth Edition. Boca Raton, Florida: Electrical
Generating Systems Association. Chapter 7

Task 25) Identity basic engine protection devices

a Sensors (analog)
--mag pickups (speed)
--temperature
--pressure
--levels
b Switches (digital)
--levels
--pressure
--temperature
--speed
c Types of system
--fail safe and non-fail safe

Reference:
EGSA (2015). On-Site Power Generation Reference Book, Fifth Edition. Boca Raton, Florida:
Electrical Generating Systems Association. Chapter 7

Task 26) Maintain/install/inspect gauges and indicators

a Identify types
--engine (prime mover gauges)
--generator (ammeter, frequency meter, volt meters, etc.)
b Monitor and verify proper operation
c Replace gauges and indicators
d Calibrate gauges
e Troubleshoot fault indicator
f Remote annunciator/relay panels

Reference:
EGSA (2015). On-Site Power Generation Reference Book, Fifth Edition. Boca Raton, Florida: Electrical
Generating Systems Association. Chapter 7

Page 27 - EGSA Apprentice Certification Program Study Guide