ADC 150-2202-01, Руководство пользователя

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150-504-100-03 Overview
HRE-504 List 1, List 1B, and List 2 August 1, 2002 5
Figure 3. HRE-504 List 1 Gel-Filled Remote Enclosure
Air-filled Stub Unit
The air-filled cable stub on the HRE-504 List 2 unit, as shown in Figure 1 on page 2 , is equivalent to an ALP
FTS-PIC air-core telephone cable. The unit comes with three metal valves: internal air pressure cutoff valve,
Schrader air stem valve, and pressure relief valve. The air cutoff valve is used to shut off the inlet air supply that
is pumped from the main feeder cable through the 30 foot (9.14 m) stub into the HRE-504 enclosure.
The air-filled HRE-504 List 2 unit is intended for buried, aerial, and duct applications. Standard color codes are
used for pair identification with color compounds chosen for electrical balance and permanency. An inner-core
jacket protects the core and provides improved mechanical and electrical characteristics. The outer jacket provides
protective covering that withstands exposure to sunlight, atmospheric temperatures, ground chemicals, and
stresses expected in standard installations.
The HRE-504 cable sealing, O-ring, and V-Band seal have been safely tested to 36 pounds per square inch (PSI).
Most cables become ruptured or damaged at this pressure level. However, the HRE-504 cable sealing is designed
to handle this amount of pressure.
The common pressure supplied through the cable is approximately 9 PSI. This is sufficient to prevent water from
entering the cable or housing. ADC recommends pressurizing the enclosure to a maximum of 12 PSI.
The cable complies with the requirements of ANSI/ICEA S-85-625-1994 and REA PE-22.
Avoid using pressures above 36 PSI. Such pressures could force the V-Band away from
the flange and, in effect, impel the dome away from the housing. This could cause damage
or injury.
Grounding lug
Cable stub entry
Pivot bracket
Order wire terminal
Optional
breather vent valve
pressure relief valve
or
V-Band T-handle
Pressure cutoff valve
Air stem/Air intake T-valve
Bottom View
To pressure
supply
Pressure supply
connection
(1/2"/24 thread)
Air stem