TM 5-6115-628-14&P
(1) Alternate operation of power units.
(a) Set circuit breakers on both power unit generator sets to OFF position.
(b) Set both switches on switch box to OFF position.
(c) Start one power unit and bring generator set up to rated speed, voltage, and frequency.
(d) Set generator set circuit breaker to ON position.
(e) Set associated switch on switch box to ON position.
NOTE
When the power plant generator set in operation must be shut down, follow
steps (f) thru (j) to continue to supply power to system or equipment being
powered.
(f) Start second power unit and bring generator set up to rated speed, voltage, and
frequency.
(g) Set generator set circuit set breaker to ON position.
(h) At switch box, set switch associated with first generator set to OFF position.
(i)
(j)
(2)
(a)
(b)
(c)
(d)
(e)
(f)
(g)
2-2
Set switch box switch associated with second generator set to ON position.
Shut down first power plant generator set.
Parallel operation of power units.
NOTE
Parallel operation of both power plant power units requires prior installation of
paralleling cables between each power unit generating set and the switch box.
Refer to paragraph 4-2.
Set circuit breakers on both power plant generator sets to OFF position.
Set both switches on switch box to OFF position.
Start one power unit and bring generator set up to rated speed, voltage, and frequency.
Set SINGLE/PARALLEL switch on operating generator set to PARALLEL position and set
circuit breaker to ON.
Start second, incoming, power unit and bring generator set up to rated speed, voltage,
and frequency.
Set SINGLE/PARALLEL switch on incoming generator set to PARALLEL position.
Observe SYNCHRONIZING LIGHTS on incoming generator set. Both lights must be going
on and off simultaneously.
