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Sequence of Operation --- Utility Failure
Series 185
7
381333–319 A
wait 10 sec.
for generator
to war m up
generator runs
unloaded
for 5 min.
generator
starting
Utility fails
(longer than
3sec.)
generator
stops
wait 15 min.
for uti li ty
to stabilize
obser v e
these
power
lights
obser v e
these
swi tch
lights
waiting for utility
to retur n
light is on
light is off
utility acceptable
generator off
Util it y power good.
Ele ctri cal loads on util ity
¡
£
electrical l oads
switch ed to generator
start
generator
©
electrical l oads
switched back
to utility
¥
¢
generator
acceptable
¤
utility
returns
load on utility
utility off
generator acceptable
load on generator
utility off
generator off
load off
utility off
generator
acceptable
load on utility
utility acceptable
generator
acceptable
load on utility
utility
acceptable
generator acceptable
load on generator