Checking Power Distribution Or Power Supply Environment - H3C S5560S-SI Series Installation Manual

Category
environment
A2: indoor partially
controlled
environment
A3: indoor
uncontrolled
environment
B1: outdoor general
environment
B2: harsh
environment
C: special
environments
Table 6 Pollution sources
Category
Saline water areas such as oceans and saline lakes
Serious pollution sources such as metallurgic plants, coal mines, and
heat and power plants
Medium pollution sources such as chemical factories, rubber plants,
and electroplating factories
Light pollution sources, such as food factories, tanneries, and
heating boilers
Checking power distribution or power supply
environment
Table 7 Requirements for power distribution or power supply environment
Item
Preparation
Voltage
Definition
controlled.
•
Completely enclosed or shielded
indoor environments.
•
Indoor environments where
temperature and humidity are partially
controlled.
•
Incompletely enclosed or shielded
places.
•
Places far from pollution sources.
•
Indoor environments where
temperature and humidity are
uncontrolled.
•
Incompletely enclosed or shielded
places.
•
Places near pollution sources.
•
Unshielded places where the
temperature and humidity are not
controlled.
•
Places far from pollution sources.
•
Unshielded places where the
temperature and humidity are not
controlled.
•
Sea environments or outdoor land
environments near pollution sources.
Special application environments
Requirements
The power supply must be available before you install the switch.
The voltage provided to the switch must be within the operating voltage range.
8
Example
with air conditioners, outdoor air
conditioner cabinets, and heat
exchanger cabinets.
Simple equipment rooms, ordinary
houses, garages, corridors, and
direct ventilation cabinets far from
pollution sources, houses without
direct exposure to sunlight or rain,
railway station platforms, and
stadiums.
Simple equipment rooms, ordinary
houses, garages, corridors, and
direct ventilation cabinets near
pollution sources, houses without
direct exposure to sunlight or rain,
railway station platforms, stadiums,
uncleaned rooms after decoration,
and rooms under decoration.
Completely exposed outdoor places
far from pollution sources.
Islands, ships, and completely
exposed outdoor places near
pollution sources.
Buried, underwater, or undersea
environments and manholes.
Radius range
≤ 3.7 km (2.30 miles)
≤ 3 km (1.86 miles)
≤ 2 km (1.24 miles)
≤ 1 km (0.62 miles)