| Environmental requirements | |||
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This section outlines the environmental requirements for a Macrocell cell site.
Indoor UMTS Macrocell cabinets can only be installed in an indoor environment. An indoor environment is one in which temperature, humidity, and ventilation are controlled and within defined requirement limits.
The indoor cabinet is not weather-hardened and must be operated in an environment within the conditions described in the following table.
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Condition |
Specification |
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Operating temperature |
-5 to +40°C (continuous) -5 to +50°C (short-term) |
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Relative humidity |
5 to 90% (non-condensing but not to exceed.024 kg water/kg of dry air) |
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Operating altitude |
-61 to +1,798 meters (-200 to +5,900 feet) above sea level |
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Extended operating altitude |
-61 to +3,048 meters (-200 to +10,000 feet) above sea level. An operating temperature de-rating of 1°C per 305 meters (1,000 feet) above 1,829 meters (6,000 feet) is allowed |
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Storage requirements |
GR-63-CORE, Section 4.1.1 |
For those installations that do not meet indoor atmospheric condition requirements, steps must be taken to install additional HVAC equipment; otherwise, outdoor-type equipment must be installed.
Adequate ventilation must be provided to remove any hydrogen gas released by the batteries in the power and battery cabinets.
This table provides values of maximum heat dissipation for certain UMTS Macrocell indoor cabinet configurations and the 3GP24i power cabinet.
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Cabinet |
Sector/Carrier/ 40W Power Out |
Maximum heat dissipation (W) |
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UMTS primary single band cabinet |
3S/1C |
2448 |
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3S/4C (future) |
7170 | |
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3S/1C MCPA |
1151 | |
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3S/4C MCPA (future) |
Future | |
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3GP24i power cabinet (18 kW load) |
N/A |
2160 |
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UMTS primary dual band cabinet |
3S/2C 1 x 1900 and 1 x 850 |
4330 |
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3S/4C 2 x 1900 and 2 x 850 (future) |
7340 | |
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3S/2C 1 x 1900 and 1 x 850 MCPA |
1630 | |
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3S/4C 2 x 1900 and 2 x 850 (MCPA Future) |
1950 |
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