MODE switch is in the OVERRIDE or AUTO
STANDBY GENERATOR NOT AVAIL
position. The six SSDG indicators are as follows:
indicates the SCS cannot locate a generator
setup for automatic operations.
FAULTY GOVERNOR indicates a problem
with the speed regulation.
REAL LOAD OSCILLATION indicates
the real or kW load between paralleled
BUS VOLTAGE LOW indicates the
generators is oscillating.
voltage on the SWBD is low.
LOAD SHEDDING OCCURRED indicates
NO JACKET WATER FLOW indicates
the electric plant has opened the load
the flow of the diesel's jacket water has
shedding circuit breakers.
stopped.
GENERATOR VOLTAGE TOO HIGH
PLANT CORRECTED ALARM indicator/
indicates the output voltage of the
push-button switch indicates the SCS has
generator exceeds the preset limit.
taken action to correct the plant following
a malfunction. The indicator will remain
GENERATOR EXCITATION TOO HIGH
illuminated until the PLANT CORRECTED
indicates the ampere level being applied to
ALARM switch is pressed.
the generator field exceeds the preset limit.
The SUPERVISORY CONTROL FAILURE
GENERATOR CB TRIPPED AUTO-
indicator and the SUPERVISORY CONTROL
MATICALLY indicates the generator circuit
MODE switch are the last items in this section.
breaker (CB) has opened. The operator
The SUPERVISORY CONTROL FAILURE
opening the generator CB can cause this
indicator will illuminate when a problem with SCS
alarm indication.
has been sensed. This could be a hardware or a
software problem. The SUPERVISORY CON-
TROL MODE switch is a three-position switch
used to select the operating mode of the SCS. The
left position is OFF. In this position the SCS
processor has no monitoring or controlling
capability. The middle position is OVERRIDE.
In this position the SCS will monitor the electrical
plant for malfunction but will not take any
corrective actions. The right position is AUTO.
In this position the SCS will monitor and take
corrective action to maintain the electric plant in
a standard configuration.
The overall plant section alarms are for
conditions that could effect the overall electrical
plant operations. These alarms are as follows:
REAL LOAD UNBALANCE indicates
the real or kW load between paralleled
generators exceeds the preset limit.
REACTIVE LOAD UNBALANCE in-
dicates the reactive or ampere load between
paralleled generators exceeds the preset
limit.
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