Equipment
2-49
User Guide Rel 1.0 Standard May 1999
Operational specifications
The following tables list the site specifications for
• environmental control
• acoustic noise
•temperature
• relative humidity
• altitude
• regulatory requirements
Environmental control
Table 2-3 lists the environmental control specifications for the AN2016
Cabinet.
Acoustic noise
Table 2-4 lists the acoustic noise specifications for a cabinet equipped with
telecommunication equipment and associated cooling fans. The cabinet
suppresses acoustical noise as stated with doors closed during times of
maximum noise generation within the cabinet.
Table 2-3
Environmental control specifications
Feature Specification
Heater pad for batteries 687 W / 120 V ac, fused, thermostatically controlled, located
underneath a painted aluminum plate. The heater pad activates at
40
°
F (4.4
°
C) and deactivates at 60
°
F (15.5
°
C)
Note:
It is recommended that the heater pads be activated at least
once every year to ensure proper functionality.
Closed loop cooling heat
exchanger
air to air, closed loop system with separate field replaceable fans for
the internal and external flow paths. Total capacity is 4800 Watts.
Gas concentration hydrogen gas concentration not greater than 1% in battery
compartment or any other cabinet compartment according to
Bellcore GR-487-CORE
Heat exchanger fans six heat exchanger fans. Minimum service life of 10 years, greater
than 40,000 hrs at 40
°
C. Easily replaceable, connectorized. Each
heat exchanger is equipped with an internal and external fan which
turn on at 38
°
C and turn off at 27
°
C.
Table 2-4
Acoustic noise specifications
Acoustic noise condition Specification (measured in dBA for hard
site)
Measured at 1.5 meter (5 ft) from the cabinet:
≤
65
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