ENATEL Rectifier Cabinet Outage problems
At GSM Field we have faced Rectifier outage problem & Telecom team need to add 5G technology devices which consuming more DC power , The Technician for the site connected External Lucent Rectifier modules to solve the problem of Existing ENATEL rectifier cabinet which make the situation very risky for the site & we received the below complain :
I moved to the site to check whats the issue , i found that :
1- Screen control for the Rectifier cabinet is OFF
2- O/P for the Rectifier cabinet is -43 Vdc
So i check 1st the problem for Screen as if there was playing or changing Rectifier parameters , but i change the screen but still not working!
This cabinet screen connected to 3 boards ( PCB )as the below photo :
On the right you will find grey ethernet cable that came from Rectifier back panels which feeding all of 3 boards by signaling & connected to the PCB on the right , which connected in series with the PCB in the middle by black Ethernet cable .
PCB at the middle alarms cables & Screen ( PCB whith on Left ) data cable connected to it .
Once i removed all cables from the middle PCB the O/P for the Rectifier being stable so i remove this board & i found that :
The board at the middle has short circuit & need to be changed.
So now i request it from supplier to be installed & the site now working normally without this board as Temp solution till we received .
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