1. 3G RRU with AMP30H Rack scenario This scenario can be used on : 1. 3G Standalone site where no 2G existing 2. 3G 1on1 site where 2G existing doesn't have any BTS3900 series By this scenario, 3G RRU system will use APM30H to put BBU3900 with WMPT & WBBP board inserted. APM30H already include with DCDU-12B which ports are support for RRU power cables size (4-6 mm2). (see DCDU-12B detail here) There for, RRU power cable can be connected directly to DCDU-12B on APM30H, and only need 1 MCB 80A-100A on Rectifier side.
RRU Power cable (connect to DCDU-12B)
Technical Specification Dimension Material (Height x Width x Weight Depth) APM30H RRU3839
700mm x 600mm x 480mm 400mm x 300mm 100mm
< 76.5 Kg
APM30H Rack BBU 3900
14 Kg
Detail material spec, see here NOTE: Always order RRU Grounding Bar. For detail material, see here
2. 3G RRU with Common BBU scenario (Hybrid) This scenario can be used on : 1. 3G 1on1 where 2G existing already have BTS3900 series. WMPT & WBBP for 3G system will be inserted to BBU3900 of existing 2G system. BTS3900/L/A are using different DCDU type (DCDU-03C or DCDU-12C), and not support for RRU Power cable size (4-6 mm2).
There are 2 solution for this issue: 1. Add new DCDU-12B on existing BTS3900/L/A , and use 1 MCB 80A 100A on rectifier side. 2. RRU power cables connect directly to rectifier, and use 1 MCB 32A per RRU
Example : Existing BTS3900A (2G) RRU Power cable (connect to DCDU-12B)
Technical Specification Dimension Material (Height x Width x Weight Depth) RRU3839
400mm x 300mm 100mm
Optic CPRI cable (Connect to WBBP)
14 Kg
Detail material spec, see here NOTE: Always order RRU Grounding Bar. For detail material, see here
DCDU-12B for RRU3839 DCDU type DBS3900 for optical system: - Use DCDU-12 for connect RRU power cable - Different port type & size compared to DCDU for MRFU - Higher max-load (30A for each RRU)
DCDU Type on BTS3900/L/A On BTS3900 version B: • Use DCDU-03C • Only support for connect MRFU/WRFU power cables • Not support for High Power RU (MRFUd/WRFUe)
On BTS3900 version D: • Use DCDU-12C • Support for high power RU (MRFUd/WRFUd/WRFUe) power cables
