2-2. Operations Under Usual Conditions
Do not operate at idle speed. At idle speed,
frequency drops below 60Hz, exciter field
voltage increases, thereby causing voltage
regulator to operate at maximum output.
This causes overloading of power
(1) The instructions in this paragraph are for the
information and guidance of the personnel that are
responsible for the operation of the generator set.
(2) The operator must know how to perform
every operation of which the generator set is capable.
This section contains instructions on starting and
stopping the generator set, on operation of the
generator set, and on co-ordinating the basic motions
to perform the specific tasks for which the equipment
(1) Preparation for Starting.
(a) Perform the daily preventive maintenance
services (para. 3-6).
(b) If an auxiliary fuel source is to be used, con-
nect the auxiliary fuel line.
(c) The generator set must be grounded prior
to operation. The ground can be in order of preference
an underground metallic water pipe system, a driven
metal rod or a buried metal plate. A ground rod must
have a minimum diameter of 5/8 inch if solid or ¾ inch
if pipe; and must be driven to a minimum depth of 8
feet. A ground plate must have a minimum area of 9
square feet and be buried at a minimum depth of 4
feet. The ground lead must be copper wire, minimum
size no. 6 AWG (American Wire Gage), which should
be bolted or clamped to the rod, plate, or piping
system and to the generator ground terminal stud (fig.
1-1 or 1-3).
Do not operate the generator set until the
ground stud terminal has been connected
to suitable ground. Electrical faults in the
generator set, load lines, or load equipment
can cause death by electrocution from con-
tact with an ungrounded system.
(d) Select the proper voltage output to meet
load requirements and connect the proper load cables.
(e) Position circuit breaker in OFF position.
(2). Electric Starting (Local). Refer to figure 2-7
for local mode electric starting instructions.