OVP FSES Installation Easy Guide

Easy Guide for Installation of Flexi System External OVP (FSES) 3G NodeB

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Flexi System External OVP (FSES) Product Overview

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Flexi System External OVP (FSES) Description Flexi System External OVP (FSES) protects Flexi BTS modules against surge pulses in power feeding lines between System Module and RF Module. FSES gives Class II (C, T2) protection for both common and differential mode disturbance for DC power feed between System Module and RF Module. Protection level UP (differential i.e. Line – Line) < 500 V (at In, 8 / 20 µs). Protection level UP (common i.e. Line – Ground) < 1000 V (at In, 8 / 20 µs).

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FSES Installation on the side 3U casing Flexi Modules

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FSES Delivery Contents The Flexi System External OVP (FSES) delivery contains the following items:
Flexi System External OVP (FSES) with a pre-installed power output and grounding cable.
Plastic bag containing M5x8 screws (6150279) for fixing the FSES to a 3U casing.

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FSES Electrical Interfaces

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Flexi System External OVP (FSES)

Installation Process onto a 3U casing

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 STEP 1: Check the Delivery with Delivery Contents for FSES in Packing List/SDR.

Do not open the FSES. If opened, the warranty is void. Soc Classification level 8 © Nokia Siemens Networks

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STEP 2: Make sure the 3U cable entries have been installed.

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STEP 3: Install the FSES onto the module casing as shown in the below figure and fix with two screws. Tighten the screws to 2.0 - 2.5 Nm. Alternatively, you can connect the cabling first and then install the FSES ready-cabled.

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STEP 4: Connect the pre-installed grounding cable (994815) to the plinth.

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STEP 5: Remove the FSES IP boot.

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STEP 6: When thick DC feeder cable is present, strip it for a length of about 10 cm (4 in) and wrap tape around the exposed wires in order not to break the IP boot. A thin DC feeder cable can be first inserted into the IP boot and then stripped and connected to the screw terminal.

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STEP 7: Insert the taped end of the DC feeder cable to the IP boot. When using a thick cable, the narrow end of the IP boot can be removed. Hold the IP boot by the rigid part and twist the end so that it comes off.

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STEP 8: Remove the tape..

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STEP 9: Connect the wires to the screw terminal.. Pay attention to the markings (V48N (-), V48RTN (+) and GND) on the FSES lid toensure correct polarity. If you have a shielded DC cable, connect the shielding to the terminal marked with GND.Note that the FSES grounding cable has to be connected to the plinth.

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STEP 10: Fix the IP boot in place and fix the screw. Bend the IP boot to the side to make it easier to fix the screw.

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STEP 11: Fix the DC feeder cable to the cable entry with a cable tie.

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STEP 12: Depending on cable routing, fix the DC power cable and grounding cable to the cable entry with a cable tie. It is recommended that the DC power cable is routed down.

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STEP 13: If applicable, connect the alarm cable following the steps in next slides Alarm output is Normally Open type. An alarm cable is not included in the FSES delivery. Use an alarm cable that meets the following requirements: • Minimum wire size 0.5 mm2 • Maximum wire size 2.0 mm2 • Round cable outer jacket diameter must be 8.3 +/- 0.5 mm2 • Maximum currect 1.0 mA

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Alarm Cable Installation process

A.

Remove the alarm port IP boot.

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Alarm Cable Installation process (Cont…) B. Remove the IP plug from the IP boot.

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Alarm Cable Installation process (Cont…) C. Insert the alarm cable to the IP boot.

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Alarm Cable Installation process (Cont…) D. Connect the wires to the N.O. and Common terminals.

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Alarm Cable Installation process (Cont…) E. Fix the IP boot in place.

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Alarm Cable Installation process (Cont…) F. Connect the other end of the alarm cable either to the EAC port on the System Module front panel or to Flexi System External Alarm (FSEB).

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STEP 14: Connect the ready-installed DC cable as required by your configuration: • System Module front panel: RF1/2/3 output port. • RF Module front panel: DC in port. Make sure that the IP boot is installed properly on the System Module or RF Module front panel.

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STEP 15: If applicable, install another FSES on top of the first one. Repeat steps 3 to 13. The maximum number of FSES in a stack is two.

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Thank You

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