Lightning Protective Communication Shelter

Lightning Protective Communication Shelter is an integrated system with advanced configuration, consisting of shelter body, AC power distribution system, lightning protection system, environment monitoring system, base station, wiring, and other auxiliary systems. As the most advanced high-end shelter, the product is characterized by fast dismantlement, and convenient installation/commissioning, substantially reduces construction and commissioning cycle of base station, and can ensure reliable operation of communication equipments. Its application is a cutting-edge mode for communication base station construction.

Characteristics and applications of mobile communication shelter

Characteristics:

1. Overall lightning protection, standardized interfaces.

2.        Durable shelter body, applicable for various environments, 20 year service life assured.

3.      Reliable monitoring system, high safety, convenient transportation and installation.

4.      Reliable heat insulation, intelligent energy-saving ventilation control, energy consumption 30% lower than conventional communication shelter.

Applications:

Mobile communication base stations (GSM, CDMA, 3G, etc), emergency communication equipments, microwave communication stations, flight pilot systems, satellite communication systems, fiber-optic communication systems, broadcast and television systems, PABX, war field commanding systems.

Six highlights of mobile communication shelter:

1.Cutting-edge structure design for security, professional shelter body manufacturing.

2. Standardized interfaces.

3. Overall lightning protection.

4. Reliable intelligent temperature control.

5. Advanced intelligent energy-saving ventilation system.

6. Automatic fireextinct system.

7. Remote monitoring and control network.

Main technique data:

1.  System working temperature: -45~+75; Temperature control precision inside shelter:±2.

2.System working humidity: 15%~90% (RH)

3. Atmospheric pressure: 70kPa~106kPa.

4. Wind resistance: wind stability 40m/s, wind-resistant capability 60m/s.

5.Aseismic capability: 7 on Richter scale.

6.Acid and alkaline resistance: resistive to salt-fog and corrosion.

7. Fireproof capability: FRP board meet class B1 in national standard.

8. Ingress protection: water-proof (no ingress under water spray of 1kg/cm² in pressure, at a angle of 70 degree, for 30 minutes), dust-proof.

9.Heat insulation: heat conduction coefficient of wall board and ceiling board less than 0.021kcal/mh.

10. Environment protection: no volatile and corrosive substance on the FRF surface, environmental polyfoam is applied to fill the insulation interlayer.

11. Load support capacity: >1200kg/m² floor, >250kg/m² ceiling.

12.Shock resistance: shelter body shall not be punctured by a steel cylinder 75mm in diameter, 3kg in weight, semi-sphere at one end, falling from the height of 1 m.

13.Power supply: 380VAC/50Hz±10%, 3 phase 5 line system; DC48V±15%, Max. current 3A, stabilizer accuracy: ±0.5%.

14.  Power consumption: <250W

15.Noise: <20dB at 1m from the shelter.

16.Earthing: earthing resistance < 4Ω.

17.Reliability: MTBF 20 years.

Introduction of main subsystems

1. AC power distribution subsystem

AC power distribution subsystem supports 2 circuits of 380V AC input with automatic switchover and mechanical interlocking. Manual switchover is available under emergency. The system can also be designed to support multi-circuit 220V or 380V AC inputs as required by clients.

2. Lightning protection subsystem

The principle of multi-level protection is applied for lightning protection subsystem. Lightning rod and effective earthing system are used for protection against direct lightning, power supply SPD, signal SPD, and antenna feed SPD for protection against lightning induction. These integrated measures can effectively protect equipments in the shelter.

 Temperature control subsystem

The temperature control subsystem can control operation of 2 sets of conditioners and ventilation module by presetting temperature value and keep the environment temperature in the shelter within appropriate limits. Each of the two conditioners works in turn with a preset switchover at time intervals. The average of input from two temperature sensors is taken as sampling signal. The temperature control point T1, T2, T3, T4 and T5 can be preset through control panel.

 Environment monitoring subsystem

The environment monitoring subsystem detects operation of equipments and environment in the shelter through sensors. Alarms are provided for abnormal conditions, such as:

      Ventilation failure alarm

      Conditioner, heater failure alarm

      Smoke and fire alarm

      Security alarm

      Mains outage alarm

      High temperature alarm

      Water ingress alarm

      Humidity alarm

      Automatic fireextinction alarm

 Network management subsystem

For further development and upgrade, the shelter system is also provided with remote network monitor interface, by which RS485/232 interface of base station can connect with central control room. This design can facilitate remote real time monitoring, rapid upgrade, high maintenance efficiency and low maintenance cost.

Energy-saving subsystem

The temperature difference between internal and external environment of the shelter is utilized to get direct exchange of cold and hot air. Interlocking control of conditioner operation is applied to reduce operation time and energy consumption.

Automatic fire-extinction subsystem

The automatic fire-extinction subsystem operates to protect equipments in the shelter if smoke or temperature reaches the preset high limits.

 Indication function

Indicator lamps on panel are available for alarms.

Product customization

Clients may choose according to their environment and installation conditions:

1.Lightning rod

2. 4 bottom wheels

3. Other accessories for shelter.