[MVMA] Is this the surge protector that DARA wants?

[Chuck Gelm]

On 9/16/19 12:07 PM, William Curtice wrote:
>
> Chuck:
>
> History: We installed a 4-bank surge suppressor made by L-Com when we 
> first installed mesh at DARA; model CMSP-CAT6T-4.  See:
>
> http://www.l-com.com/surge-protector-indoor-4-port-10-100-1000-base-t-gas-tube-cat6-lightning-protector-rj45-jacks
>
> Following the lightning strike, Jim Simpson asked that we install a 
> suppressor made by Polyphaser.  However, Polyphaser makes no Data 
> Surge suppressors; it sells the Transtector units in their catalog.  
>   L-Com, Transtector and Polyphaser are all owned by the same holding 
> company.  We settled on using the Transtector  ALPU-L130 unit for 
> install at DARA.  It sells for around $50.
>

> *I recall running this by Jim Simpson and others at DARA* when the 
> issue first came up, *and the ALPU-L130 was deemed acceptable.*  Link 
> immediately below shows the ALPU-L130.
>
> https://www.transtector.com/data-surge-protector-spd-alpu-outdoor-gigabit-alpu-l130
>
> The next one up the line…. The ALPU-F140 has better specs, and sells 
> for $85.  Specs are probably overkill.
>
> https://www.transtector.com/data-surge-protector-spd-alpu-outdoor-gigabit-alpu-f140
>
> The unit you noted in your email has better specs yet.  I do not 
> believe it was available when we made our initial DARA Transtector 
> purchase decision.
>
> Right now, the Bullet/Omni and AGM5 are protected with the ALPU-L130 
> units.  The L-Com unit is also still installed above the ceiling tile, 
> and I believe *redundantly* protects the Cat5 lines running to the 
> server room and to the classroom telephone outlet.
>
> Unlike most sellers of surge suppressors…. Transtector actually 
> publishes comprehensive specs on their hardware, and you CAN  make 
> comparisons,  model to model.    The higher priced units usually 
> support higher data rates, and faster clamp times.  You can choose 
>  units that clamp at 28 volts… or 50 volts.  We choose 50 volts due to 
> the future possibility of running 48 V PoE for non-Ubiquiti gear.
>
> Bill
>
>
References:
https://www.transtector.com/Images/Downloadables/Datasheets/ALPU-FIT-LITE-PTP_family_datasheets_US.pdf

Hi, Bill:

  Thanks. That explains much.

  I was wondering why there were 6 suppressors and only 2 external devices.

  So, since we have 2 suppressors, we could add a $60 Power Box and feed 
3 nodes with each suppressor.
One suppressor and one Power Box ($110) (and one POE) .vs. three 
suppressors ($150) (and three POEs).
We could grow to 6 nodes at DARA for $60 per each group of three nodes.
We already have the necessary (2) TransTectors.

Chuck


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