Power supply of IE4000 needed?

Hi Guys,

I have some queries in relation to the Cisco IE 4000 switch.

At the moment we are ordering the following units. IE-4000 - 4GC4GP4G-E Switches.

Along with the PWR-IE170W- PC-DC= power supply.

Current spec HERE

 

These units are being deployed underground.

 

My question is this.

The power supplies function seems to be to take between DC 12-54 V and convert it to 54VDC/3.15 Amps.

Is it possible that if the electricians can supply the switch directly with the 54VDC, that we could simply not need the power supply? This would be a savings of about $1300 a cabinet?

Do these power supplies provide more than just converting the input to the required output? Do they do any power smoothing or any other functions i might be missing?

We do require the full POE budget as it is foreseeable that cameras and Ap's will be utilising these switches at some point?

 

 

I also have a question about the current setup , since it's been installed.

 

We have both power connections going from the switch A & B , to the same powersupply.

Is this the correct setup ? or is it more designed that the A\B switch connections are to be fed from a completely separate power supply \circuit? See Photo

Mounted in cabinet HERE

 

 

 

Thanks for reading