Kategori: MINECOM

VBU2 DUAL BRANCH UNIT Series
dual branch unit series
Voice, Data, Video capable
Internal isolation jumpers
Terminal and Saddle connections
Intrinsic Safe version
IP66/NEMA4X enclosure
description
BU2 Dual branch unit series, is a passive device used to branch off (one Input – 3
Outputs) the main cable into a cross tunnel or into another level. The BU2 has been
designed to provide a balanced RF output, with a minimum attenuation loss through
the branches. The branches will also pass a DC voltage to power the down line
amplifiers with minimal voltage drop.
The BU2 utilises MineCom’s proprietary leaky feeder terminal and saddle connections
(rather than coaxial connectors which can cause higher losses and voltage drops),
designed for easy assembly underground without the need for special tools or skills.
The BU2 is also equipped with isolating jumpers, which will allow mine staff to –
Isolate/terminate the branch. (Blocks both RF and DC from entering the
branch cable)
DC Isolate the branch. (Blocks DC from entering the branch cable)
Passes both RF and DC to the branch. (Normal operation)
SPECIFICATIONS
Frequency: VHF & UHF
Insertion Loss: Through main line - 4dB (VHF) 6dB (UHF)
Branch one & Branch two – 8dB (VHF) 10dB (UHF)
Impedance: 75 ohm
VSWR: 1.4:1 (148 – 175Mhz)
1.2:1 (20 to 120Mhz)
Through Current Capacity: 1.5 amps Max
Power Requirements: None
Connections: Proprietary - Brass Screw terminal and Saddle
(optional N type)
Enclosure: IP66/NEMA4X heavy duty enclosure
Weight & Dimensions: 1.2Kg - 160(w) x 60(d) x 75(h) mm
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