An inside look: Building an enclosed, harsh environment UPS

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An inside look:

Building an enclosed,

harsh environment UPS


Challenge:

Our customer needed a 550 kVA UPS to use in

underground tunnels and that could handle extreme

temperatures (up to 50°C).

Solution:

A dust-tight enclosure with special filtration to house a Power

Xpert 9395 UPS module. For fast installation, the UPS and

enclosure arrived pre-wired and mounted on a skid.


A 550 kVA UPS usually ships in multiple

pieces. Because this one needed an air-

tight enclosure that couldn’t be added

in the field, we designed a skid base and

mounted it to a wood pallet for shipping.


We bolted the UPS to the skid, giving

it a sturdy and elevated foundation.


This also allowed the UPS and enclosure to

stay as one unit throughout construction,

shipping and installation.


With the UPS in place, we

framed the enclosure,

leaving room for a fan

chamber to help regulate the

unit’s internal temperature.


Building the UPS on a skid and adding the

enclosure made it hard to add holes and

conduit during installation. We decided to

route everything through the top of the unit.


Placing color-coded cam-lok connectors (based

on the voltage environment) on top made the unit

even easier to install—and kept the dust out.


Text

We added a louvered

chimney so exhaust could

escape without allowing in

metallic dust that could

render the UPS useless.

The air intake

included four filters

to help remove as

many particulates

as possible.


By doing all the internal wiring and testing at

the factory, the customer only had to remove

the unit from the pallet upon arrival and use

the cam-loks to connect it to a power source.


The end result? An

industrial grade, harsh

environment UPS that

was easy to install and

met the customer’s

requirements.


For further ease-of-

use and to prevent

accidental exposure

to environmental

contaminants, the

UPS display was

moved to the

enclosure’s front door

and a weather-proof

cover placed over the

service port.


This is just one example of how

we’ve adapted our designs to

better suit a customer’s needs.

Chances are, we’ve done or seen

something similar to what you

might be looking for.


Our team of engineering problem

solvers (who love a challenge) are

at the ready. Finding a solution

that works for you is in their DNA.

Learn more about this group and

their projects here.

Learn more about this group and their projects here.

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An inside look: Building an enclosed, harsh environment UPS