- It is a device whitch can detect running or
emergency power source and automatically select opening or closing
position required. Depending on contents of facilaties or choice of
emergency load, applications may vary. emergency power supply facilities
are classified into four kinds.
- Battery(30 minutes capacity)
- common to battery(10 minutes capacity)
and stand-by generator
- Stand-by generator-set
- Receiving power souece, exclusive use
for emergency power supply. Variency of conditions may be incorpo-rated
into it accordance with its usuage, which requires different current
cirsuits. Itnis important therefore to select switches to specified
for required current circuits.
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