RRU3908 V1 V100R003 Installation Guide Issue: 02 Date: 2010-07-20 HUAWEI TECHNOLOGIES Co., Ltd.
Contents 1. Installation Tools ……………………………………………………………………………………………. 2 2. Installing the DC RRU ……………………………………………………………………………………… 3 Installation Modes ……………………………………………………………………………………. 3 Space Requirements …………………………………………………………………….. ………… 4 Installation Procedure …………………………………………………………………………………. 6 Preparing for the installation …………………………………………………………………………. 6 Installing the RRU on a Metal Pole …………………………………………………………………. 7 Installing the RRU on a U-Steel …………………………………………………………………….
Installation Tools Hammer drill (with bit 14) Heat gun Rubber hammer ESD gloves Vacuum cleaner Phillips screwdriver Flat-head screwdriver (M3~M6) (M3~M6) Crimping pliers Wire stripper Adjustable wrench Guarded blade utility knife Wire cutter (with the diameter of at least 32 mm) Torque wrench 5mm M3~M6 Combination wrench (21mm~21mm) for pole installation Level Torque screwdriver (17mm~17mm) for wall installation Marking pen Multimeter (with the diameter of no more than 10 mm) 2 Measu
Installing the DC RRU a Installation Modes On a metal pole On a U-steel On an angle steel On a wall 30 mm to 50 mm 60 mm to 114 mm (The recommended value is 80 mm.) 63 mm to 80 mm The following figure describes the specifications for the metal pole, angle steel, and U-steel where the RRU is installed.
Installing the DC RRU b Dimensions and Installation Clearance Recommended Clearance for a Single RRU RRU Dimensions 380 mm 170 mm The recommended installation clearance meets the requirements of the equipment for normal running and OM. When the installation space is sufficient, the recommended installation clearance can be adopted.
Installing the DC RRU b Dimensions and Installation Clearance Recommended Horizontal Spacing for Two RRUs Installed in Parallel ≥300 mm ≥600 mm Minimum Horizontal Spacing for Two RRUs Installed in Parallel ≥600 mm 100 mm Recommended Vertical Spacing for Two RRUs Installed in Parallel 400 mm 400 mm Minimum Vertical Spacing for Two RRUs Installed in Parallel ≥300 mm 200 mm ≥500 mm 300 mm ≥500 mm 300 mm 5
Installing the DC RRU c Installation Procedure d Preparing for the Installation Cover plate Attachment plate Auxiliary bracket Dual-nut bolt Main bracket Front Main and auxiliary brackets for the RRU 6 Back
Installing the DC RRU e Installing a Single RRU on a Metal Pole 1. Install the main bracket. When installing the main bracket, ensure that the contact piece on the bracket is fixed. 1200 mm～1600 mm You may fit one end of the auxiliary bracket on one dual-nut bolt assembly and then the other end on the other dual-nut bolt assembly during the installation. 2. Use an adjustable wrench to tighten the nut until the fastening torque is 40 N·m.
Installing the DC RRU l Cable List Cable Connector Type Connected to… AISG multi-wire cable between the RRU and the RCU Waterproof DB9 connector Port labeled RET on the RRU Standard AISG female connector Standard AISG male connector of the AISG extension cable or RCU AISG extended cable between the RRU and the RCU Standard AISG male connector Standard AISG female connector of the AISG multi-wire cable Standard AISG female connector Standard AISG male connector of the RCU RF cable between RRUs
Installing the DC RRU m Installing the RRU Cables 1. Opening the Cover Plate of the RRU Cabling Cavity M4 2.
Installing the DC RRU n Installing the RRU Cables 3. Cable Connections of RRU Case 2 Case 1 DC RRU alarm cable CPRI optical cable DC RRU power cable PGND cable RRU RF jumper Shielding layer of the power cable Waterproofed alarm cable Do not remove the dustproof cap from the feeder connectors that are not in use. In addition, protection measures against damp, dust, and salt mist must be taken.
Installing the DC RRU o RRU Cable Installation Scenarios RRU+Wall-Mounted BBU DC RRU power cable LOAD0 CPRI optical cable Shielding layer of DC RRU power cable The DCDU panel must face right side and the BBU panel must face downwards. z When connecting the DC RRU power cable to the DCDU-03B, you must add an OT terminal to the shielding layer. Then, fix the OT terminal to the corresponding PGND terminal of the DCDU-03B. For details on how to add an OT terminal, see page 37.
Installing the DC RRU o RRU Cable Installation Scenarios RRU+PS4890 DC RRU power cable CPRI optical cable LOAD0 Shielding layer of DC RRU power cable z When connecting the DC RRU power cable to the DCDU-03B, you must add an OT terminal to the shielding layer. Then, fix the OT terminal to the corresponding PGND terminal of the DCDU-03B. For details on how to add an OT terminal, see page 37. z The DC RRU power cable is connected to one of the LOAD0 to LOAD5 terminals of the DCDU-03B.
Installing the DC RRU o RRU Cable Installation Scenarios 220 V AC input (4815 installed in the OMB cabinet). Grounding the shielding layer of the power cable: Metal Shielding layer (25 mm) PGND cable The DC RRU power cable is connected to terminals of the 4815 power system for RRU. DC RRU power cable CPRI optical cable –48 V DC input (DCDU-03C installed in the OMB cabinet).
Installing the DC RRU f Installing Two RRUs Back-To-Back on a Metal Pole 1. Install an RRU. For details, see page 6 Installing a Single RRU on a Metal Pole. 2. Install the main fixture for another RRU. 3. Reinstall the attachment plate and cover plate on the second RRU by interchanging their positions. M6X16 5N•m 4. Install the second RRU on the main bracket. In reverse mode In standard mode Ensure that the cabling cavities of the two RRUs face the same direction when installing the RRUs.
Installing the DC RRU g Installing the RRU on a U-Steel Plan view U-steel z The procedure for installing the RRU on a U-steel is the same as that on a metal pole. z Only one RRU can be installed on a U-steel. h Installing the RRU on an Angle Steel Plan view Angle steel z The procedure for installing the RRU on an angle steel is the same as that on a metal pole. z Only one RRU can be installed on an angle steel.
Installing the DC RRU i Installing the RRU on a Wall 1. Place the auxiliary fixture on the wall at the installation position and then mark the anchor points by using a marking pen. 128 mm Auxiliary bracket 126 mm z It is recommended that the auxiliary bracket be 1,200 mm to 1,600 mm above the ground. z The RRUs cannot installed on a wall in centralized mode. Therefore, expansion bolt assemblies should be prepared for each RRU. 126 mm RRU 1200 mm～1600 mm 2.
Installing the DC RRU i Installing the RRU on a Wall 3. Fit the auxiliary bracket on the expansion bolts downward, and then tighten the bolts by using a combination wrench 17 mm. M10 30N•m Arrows are upwards 5. Install the RRU. 11 4. Install the main bracket.
Installing the DC RRU i Installing the RRU on a Wall 6. Install multiple RRUs.
Installing the DC RRU j Cable Connections of a Single RRU DC RRU alarm cable CPRI optical cable Install the PGND cable Antenna DC RRU power cable RF cable between RFUs AISG multi-wire cable between the RRU and the RCU Install the RF jumper (RF cable between RFUs is optional) Install the DC RRU power cable RRU RF jumper RCU Feeder Install the CPRI optical cable AISG extended cable between the RRU and the RCU PGND cable Install the DC RRU alarm cable(optional) Install the AISG multi-wire cable bet
Installing the DC RRU l Cable List Cable Connector Type Connected to… PGND cable OT terminal ( M6 ) Grounding bolt on the RRU (16 mm²) OT terminal ( M8 ) Nearest grounding bar RRU RF jumper DIN male connector Ports labeled ANT-A and ANT-B on the RRU DIN male connector Feeder or antenna Two OT terminals ( M4 ) z North American standard: DC RRU power cable The OT terminal on the blue wire is connected to the NEG(-) port on the cabling cavity of the RRU.
Installing the DC RRU o RRU Cable Installation Scenarios RRU+TMC Grounding the shielding layer of the power cable: Metal Shielding layer (25 mm) PGND cable DC RRU power cable CPRI optical cable z When connecting the DC RRU power cable to the DCDU-03B, you must add an OT terminal to the shielding layer. Then, fix the OT terminal to the corresponding PGND terminal of the DCDU-03B. For details on how to add an OT terminal, see page 37.
Installing the AC RRU a Space Requirements 380 mm 250 mm The recommended/minimal clearance for the AC RRU/clearance for Two Combined RRUs is the same as that for the DC RRU. For details, see page 4 and page 5. 485 mm bb Installation Modes On a metal pole On a U-steel On an angle steel On a wall The AC RRU cannot be installed at the side. When it is installed in other modes, the procedure is the same as that of the DC RRU. For details, see page 6.
Installing the AC RRU c Installing the Surge Protection Box (for Outdoor Scenarios) Installation of the surge protection box. Dimensions of the surge protection box. 140 mm 75 mm 305 mm 240 mm Hoop iron Recommended clearance for the surge protection box. Minimal clearance for the surge protection box.
Installing the AC RRU c Installing the Surge Protection Box (for Outdoor Scenarios) 1. Install the surge protection box on the metal pole. As shown in the figure, unfasten the screw on the loop iron with the torque of 4.8 N•m. Installing the surge protection box on the wall Lead the loop iron through the opening between the back plate of the surge protection box and the surge protection box. Circle the loop iron around the metal pole, and then tighten the screw on the loop iron.
Installing the AC RRU c Installing the Surge Protection Box (for Outdoor Scenarios) 3. Connect the power cable between the surge protection box and the RRU. Lead the external AC power cable through the PG connector labeled IN. The L, N, and PE wires of the power cable are connected to the Lin, Nin, and PE terminals on the surge protection box. Lead the power cable between the RRU and the surge protection box through the PG connector labeled OUT.
Installing the AC RRU d Cable Connections of a Single RRU AC RRU monitoring signal cable Antenna CPRI optical cable DC RRU power cable RF cable between RRUs AISG multi-wire cable between the RRU and the RCU RRU RF jumper Feeder AISG extended cable between the RRU and the RCU PGND cable AC RRU power cable Equipotential cable External power supply The AC RRU monitoring signal cable, DC RRU power cable, equipotential cable between the power module and the RRU are installed before delivery.
Installing the AC RRU f List of Cables (No Surge Protection Box Configured) Cable Connector Type Connected to… PGND cable OT terminal (M6) Grounding bolt on the RRU OT terminal (M8) Nearest grounding bar DIN male connector Ports labeled ANT-A and ANT-B on the RRU DIN male connector Feeder or antenna Round connector Port labeled AC_in on the RRU To be made depending on field requirements External power supply DLC connector Connect the fiber tails labeled 1A and 1B to the CPRI_W port on the
Installing the AC RRU f List of Cables (No Surge Protection Box Configured) Cable Connector Type Connected to… AISG extended cable between the RRU and the RCU Standard AISG male connector Standard AISG female connector of the AISG multi-wire cable Standard AISG female connector Standard AISG male connector of the RCU RF cable between RRUs 2W2 connector Port labeled RX_IN/OUT on the RRU 2W2 connector Port labeled RX_IN/OUT on the RRU SFP high-speed cable for cascaded RRUs SFP200 male connector
Installing the AC RRU g List of Cables (Surge protection box Configured) Cable Connector Type Connected to… Power cable between RRU and the surge protection box Round connector Port labeled AC IN on the RRU OT terminal The Lout, Nout, and PE terminals on the surge protection box OT terminal The Lin, Nin, and PE terminals on the surge protection box To be made depending on field requirements External power supply Standard AISG male connector Standard AISG female connector of the AISG multi-wire
Installing the AC RRU h Installing the RRU Cables The cabling cavity of the AC RRU is the same as that of the DC RRU. The procedures for opening and closing the cover for the cabling cavity of the AC RRU are the same as those for opening and closing the cover for the cabling cavity of the DC RRU.
Installing the AC RRU h Installing the RRU Cables CPRI optical cable Power cable between RRU and the surge protection box External AC input power cable Equipotential cable PGND cable z for Outdoor Scenarios z for Indoor Scenarios External power supply system External power supply system The maximum length of the external AC input power cable is 70 m for the 110 V AC single-phase power cable and 100m for the 220 V AC single-phase power cable.
Installing the AC RRU i Installation Checklist 1. The PG connectors labeled IN and OUT on the surge protection box are securely installed and cannot be rotated with the cables. 2. The waterproof gaskets on the door of the cabling cavity of the surge protection box are not stripped or broken. 3. The OT terminals of the cables connected to the surge protection box are securely linked. The jackets of the cables are not damaged, and there are no uneven edges on the cables. 4.
Powering On the RRU Start Power on the RRU Rectify the fault Check whether the status of the RUN LED is 1s ON, 1s OFF and that of ALM LED is OFF. No Yes End When the RRU is unpacked, it must be powered on within 24 hours. Appendix a Binding the RRU and Installation Components 1.
Appendix a Binding the RRU and Installation Components 2. Lifting the RRU and Installation Components to the Tower Pulley Steering rope Lifting rope z Installer A climbs onto the tower. Then, installer A fixes the pulley to the support of the tower platform and leads the lifting rope through the pulley. z Installer C uses a lifting rope to bind the RRU and installation components as shown in the preceding figure and then ties a knot in the steering rope at the handle of the RRU.
Appendix b Making OT Terminals by Using a Cable Peeler (Recommended) Add two OT terminals to the end of the power cable connecting to the RRU. -48V DC power cable NEG ( - ) OT terminals Label for preparing the power cable Shielding layer RTN ( + ) Determine lengths of power cables for different operations according to the scales on the inner side of the cover plate of the cabling cavity. 0 10 20 30 40 Based on the determined length, remove the jacket and shielding layer off the power cable.
Appendix c Adding OT Terminals to the Power Cable on the DCDU side Lead the wires made of the shielding layers through heatshrinkable tubes. Wrap the PVC insulating tape at the joint where the three wires meet. WARNING Do not damage the shielding layer of the power cable when cutting around the jacket.
Appendix d Waterproofing Outdoor Cables z The waterproof tape should be wrapped for an extra length of 20 mm away from the connectors at both ends. z The tapes should be wrapped around the connector from the lower part to the upper part. When wrapped for another layer, the tapes may not be cut. z When wrapping the waterproof tape, apply even force to extend the tape until the width of the tape is 1/2 of the original width.
Appendix f Installing the corrugated pipes of AC power cable z After the corrugated pipe is installed, wrap both ends of the power cable with waterproof tapes by referring to the following figure. z Wrap the joint spirally upward, downward, and then upward again. That is, the joint is wrapped by three layers of the tape. Ensure that two adjacent layers overlap with each other about half the width of the tape.
Changes History This page describes the changes in the RRU3908 V1 Installation Guide. z02 (2010-07-20) This is the first commercial release. Compared with (2010-05-04), the figure of the minimum clearance for RRU are optimized, and the minimum clearance for the RRU installed on a tower requirements is added. z01 (2010-05-04) This is the draft release.
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Installing the DC RRU o RRU Cable Installation Scenarios RRU+APM30/APM30H Grounding the shielding layer of the power cable: Metal Shielding layer (25 mm) PGND cable DC RRU power cable CPRI optical cable z The DC RRU power cable is connected to one of the LOAD4 to LOAD9 terminals of the PDU.
