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User Manual
Airbridge cBTS3612 CDMA Base Station
1) Input indices
Input mode: -48VDC
Operating voltage range: -40VDC~-60VDC
Maximum input current: 30kA
2) Wiring mode
The positive and negative poles of the power cord are connected with V+ and V-
terminals of the lightning arrester.
The PE end is connected to the grounding copper bar for lightning protection.
3) Lightning protection indices
Maximum through-flow: 30kA, once, 8/20µs surge current wave.
Rated through-flow: 5kA, 5 times for positive and negative each, 8/20µs surge
current wave.
Residual voltage: 250V.
4) Indicator and alarm node indices
When the green indicator is on and the red is off, it means the power input is normal,
and the lightning arrester is working normally.
If the green indicator is off and the red indicator is on, it means the power input is
abnormal, components in the lightning arrester are damaged, protection effect is
deteriorated and the device must be replaced immediately.
The alarm node is a constantly-closed contact. It is closed when the lightning
arrester is normal and it is open when arrester fails. Regulated current is Ÿ1A.
5) Size of the lightning arrester: L%W%H= 41mm%95mm%59mm
II. DC/DC power supply module
Power supply module provides perfect protection function. The safety specifications
comply with UL, TUV and CCEE standards. EMC is compliant with EN55022 and
IEC61000-4 standards.
Operating temperature: -10~ 50âC
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Storage temperature: -40~ 70âC
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Atmospheric pressure: 70~ 106kpa
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Relative humidity: 5%~90%
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Input voltage: -40~ -60VDC
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Input under-voltage current-limiting protection point: -36!1VDC
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Input under-voltage recovery point: -38!1VDC
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System Description
2 Hardware Architecture
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