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Huawei eRRU Series, Quick Installation Manual, Page: 13 / 16

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Huawei eRRU Series Quick Installation Manual Download Page 13

Auxiliary mounting bracket 

12 

     1. Bind the RRU and the main and auxiliary mounting brackets properly using a lifting sling. 

2. Use a fixed pulley to hoist the RRU and mounting kits 

onto the tower separately. 

1. After climbing up to the tower, installation engineer A secures the fixed pulley to the tower platform support and 

leads the lifting sling through the fixed pulley.  

2. Installation engineer C binds the eRRU and mounting kits using the lifting sling and secures the traction sling to the 

RRU handle.  

3. Installation engineer B pulls the lifting sling downwards, and installation engineer C pulls the traction sling outwards 

to protect the RRU and mounting kits from colliding with the tower.  

4. Installation engineer A catches the RRU and mounting kits and then unties the sling.  
The preceding hoisting procedure is for reference only. 

• When hoisting the RRU and mounting kits onto the tower, 

protect them from colliding with the tower. 

• Hoist the RRU onto the tower before it is installed on a pole. 

Hoisting the eRRU and Mounting Kits 

a 

Appendix  

Do not hoist only the RRU hander onto the tower. Do 
not fasten the lifting sling on the cable cavity hander. 
Otherwise, the lifting sling may fall down, thereby 
damaging devices or causing personal injuries. 

Main mounting bracket 

NOTE 

WARNING 

CAUTION 

Summary of Contents for eRRU Series

Page 1: ...damage before the binding Installing the Mounting Kits on the Wall eRRU Installation Process For a single RRU the wall can bear four times of the weight of an RRU Expansion bolts must be tightened to 30 N m to ensure that the bolts work properly and the wall remains intact without cracks in it NOTE Before installing the RRU check the RRU and accessories based on the equipment packing list and ensu...

Page 2: ...lace the removed end of the bolt into the U notch 5 Install the RRU on the main mounting bracket until the RRU snaps shut Do not remove the plastic screw caps from the bolts on the mounting kits Tighten the two dual nut bolt assemblies alternatively After the main and auxiliary mounting bracket are secured properly measure the spacing between the brackets on both sides and ensure that the spacing ...

Page 3: ...ll the first RRU 4 Installing the second RRU The distance between the bottom of the hoop of the second eRRU and that of the first eRRU is the height of an eRRU module 3 Interchange the cover plate in the front and the attachment plate and stainless steel screws at the rear of the second RRU NOTE ...

Page 4: ...ve 20 mm to 30 mm of the expansion bolt outside the wall When installing the RRU on the wall the expansion bolts must be tightened to 30 N m to ensure the bolts work properly and the wall remains intact without cracks in it Installing the eRRU Mounting Kits on the Wall CAUTION Level 1200 mm to 1600 mm Wall or other obstacles 3 Use the two removed M8 expansion bolts to secure the main mounting brac...

Page 5: ...til the eRRU snaps shut When installing the eRRU do not loosen the connecting screw Loosen it downwards when removing the eRRU Mounting the second eRRU is similar to the way for mounting the first eRRU The distance between the bottom of the hold hoop of the second eRRU and that of the first eRRU is the height of an eRRU module During back to back installation it is recommended that removing the ba...

Page 6: ...s of the RF jumper by adopting the 1 3 3 waterproof method Installing the PGND Cable a Installing the RF Jumper b Installing eRRU Cables The eRRU3232 is taken as an example Operations for other eRRU products are similar 1 When eRRU3253 8T8R is equipped with 8paths antenna for routine use the calibration port is required to connect to the antenna 2 If eRRU3253 paths need to be divided do not connec...

Page 7: ...of the RRU Installing a DC Power Cable Installing an AC Power Cable Ground terminal Cable hole Power cable connecting the AC power equipment and SPM60A Cable Connections in the SPM60A Power cable connecting an SPM60A and RRU When the remote distance of the RRU is more than 40 m but less than or equal to 100 m the RRU is connected to the 3 3 square meter DC power cable and then to the 8 2 square me...

Page 8: ... optical fiber cap and connect one end of the optical fiber to the optical module on the RRU If one optical fiber is used the port connected to the optical module is CPRI0 IR0 by default 3 Connect the other end of the optical fiber to the optical module on the BBU The optical modules to be installed must match CPRI rates The two optical modules connected to the same optical fiber must of the same ...

Page 9: ...ure that the vacant cable troughs in the cabling cavity are insert waterproof blocks 1 2 3 RRU RF jumper Cable Connections for an eRRU3232 DC Cable Connections for an eRRU3232 AC RRU power cable 4 Cable Connections for an eRRU3251 DC Cable Connections for an eRRU3251 AC Cable Connections for an eRRU3255 DC Cable Connections for an eRRU3255 AC ...

Page 10: ...using the 1 3 3 waterproof method For details see Appendix c For details about matched RRU antenna specifications see Antenna Technical Description For details about how to install antennas see Hardware Installation Guide eRRU3253 Cable Connections CPRI optical fiber CPRI0 IR0 port preferred In indoor or outdoor scenarios retain the dustproof caps on the unused antenna connectors and seal the conn...

Page 11: ... male connector RF port on the RRU Type N male connector Antenna 10 Cable List i Installing eRRU Cables Checking the eRRU Hardware Installation Checking the Device Installation a NO Check Item 1 The position for each device conforms to the engineering drawing and meets the space requirement Sufficient space is reserved for equipment maintenance 2 When installing the RRU on the pole secure the brac...

Page 12: ...y connected 8 The bending radius of the cables must meet the requirement to prevent power loss 9 Check the shield layer of the power cable and ensure that it is properly connected 10 Waterproof the connected or spare type N connectors After the RRU is installed power it on within 24 hours If you power off the RRU for maintenance you must restore power to it within 24 hours Checking the Power on St...

Page 13: ...ing sling downwards and installation engineer C pulls the traction sling outwards to protect the RRU and mounting kits from colliding with the tower 4 Installation engineer A catches the RRU and mounting kits and then unties the sling The preceding hoisting procedure is for reference only When hoisting the RRU and mounting kits onto the tower protect them from colliding with the tower Hoist the RR...

Page 14: ...ss female connector pressfit type to two core wires Preparing the Tool less Female Connector The eRRU3232 is taken as an example Operations for other eRRU products are similar b Appendix 5 Strip the sheath based on the determined length with the 18 mm shield layer exposed NEG Shield layer 48 V DC power cable RTN The length of sheath to be stripped must be consistent with that of the notch in the t...

Page 15: ... and neatly and ensure that each layer of waterproof tape overlaps more than 50 of the preceding layer and that all waterproof tape is completely adhered Ensure that the side with adhesive tape is covered on the wrapped tape Sealing Connectors of RF Cables Using the 1 3 3 Waterproof Method c Wrap the first layer of PVC insulation tape Bind the both ends of the tape by cable tie Reserve a length of...

Page 16: ...ces must be wrapped up with waterproof tape and PVC insulation tape according to the instructions In this procedure the waterproof tape and PVC insulation tape to be wrapped are not included in the grounding pieces and need to be prepared additionally Cut the tie wraps 3 mm to 5 mm away from cable tie heads Wrap the connector with three layers of waterproof tape Then wrap the connector with three ...

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