|
Welcome to our
MasTec Front Page
I would like to mention that
all our monthly newsletters and monthly front pages are available
from the web archive link
This month our
Product Category Focus is:
UPSs - Three
phase, Single Phase, Line Interactive, On LIne, Parallel, Redundant, Long Runtime, Hot Swap, Scaleable,
Isolated, ++ Medical and Industrial Certified types.
+ PDUs, Medical Conditioners, KVM, IT Energy Usage, Cloud &
Servers Room Racking ( Huge range)
+ Software and Hardware Accessories.
MasTec has been
marketing and selling UPSs since 1992, starting with TrippLite
and over the years adding many other world class company's power
products.
If you are looking
for UPSs, we have the largest selection in Oceania for UPS, PDU,
AC Power Conditioner, Medical UPSs, UPS Accessories- software
& hardware .
Our pricing is
also very competitive. Ask for a quote
UPSs - Most major
manufacturers
For those new
to UPSs, they come in great variety of types to meet a broad
market need.
As you click
into the various manufacturers logos to the right and above,
you will see many product commonality and sometimes something
very different or special.
However, in general
with out getting too technical UPSs, Uninterruptible Power Supplies
make AC power when the AC mains power fails or it is turned off.
To match your
systems to a UPS you need to know several key points.
A system can
be any AC powered device, PCs, PLCs, PACs, Displays, Controllers
or a suite of servers etc
- Wattage / VA
of load
- Type of load
= many types
- Run time required
on Battery Backup
- Pure Sinewave
or is Quasi wave suitable
- How critical
is this load
- Service methods
required
- Is it a green
power site
- Is there software
control of the UPS
- Does the site
require Remote Access
- Is the site
a medical power site
- Does the site
require isolation
- And many more
questions
For most single
PC users, questions 1, 2, 3, 4 will bring up several suitable
UPSs.
At that point
it is often pricing and availability that decide the choice.
However if you
are powering a room of computers with a server or two in the
mix, then a broader strategic discussion is required.
Some sites are
very critical and cannot go down and this requires a lot more
technology to achieve and usually a lot more money.
If the site is
Medical then you are in a different ball game as it becomes a
matter of, does the UPS meet Medical Certification for Leakage
Currents etc. There are world stanadards.
Some site are
very sensitive to electrical disturbance and require an Isolation
on line pure sinewave UPS.
For super critical
sites that require immediate serviceability, then a hotswap,
scaleable UPS with maybe a parallel redundant identical UPS plus
a fast acting bypass switch to keep power alive if all that other
technology fails. Phew.
Then consider,
do I need a Diesel Genset to get me through prolonged power outages
rather than purchasing a giant battery bank. Note both gensets
and big batteries have technical problems that can only be solved
with a vigilant design and then a good service team.
MasTec's UPS
sites
Our UPSs power
some of the dirtiest and most rugged industrial sites in NZ.
These sites also have critical sections in them. We meet these
requirements with our various manufacturer's UPS models.
At present we
have sold in excess of 20K UPS into the NZ,Aus, Oceania market,
ranging from little 300VA units right up to Hot Swap, Scaleable,
Redundant large VA UPSs
Talk to us about your site and
technical needs.
Somethings not
to do with UPSs
When you receive
the UPS, do not connect it up and see if it works on the batteries
for a prolonged time. Let the batteries charge before putting
in service.
Please do not
put your UPSs in cupboards, they will get hot. Yes, you would
be surprised.
We have had two
sites put 10 and 20KVA on line UPSs in steel boxes to keep the
dirty industrial environment away from the UPS but they forgot
to ventilate sufficiently to stop the UPS getting very hot.
For best results
move the UPS out of the dirty environment to a clean room with
ventilation and hard wire to the power site, using a standard
AC Breaker box and NZ Grade AC power cabling. Mark the UPS power
power outlet with a colour so everyone know this is UPS power
and will not plug in a vacuum cleaner
or
Better still hardwire the device to the UPS so no one can get
at the UPS power and destroy its ability to do its job.
Battery Service
Work
This is the weakest link in a
UPS System and needs a good service strategy to keep the UPS
capablility up to meet its demand when it is required.
Most commercial UPSs up to about
10KVA now use 9amphr 12VDC SLA batteries for backup. These batteries
are usually rated at 3 years usage.
We do recommend
replacing them at these time intervals even if they seem OK when
load testing.
Our experience tells us the SLA
batteries often fall off their capacity quite rapidly.
Put in place a service schedule
to do this. If you want to send UPSs back to MasTec base ( small
ones ), we will do this work for you.However be aware, that most
industrial grade sparkies these days can do this work also. Ask
if they have done it before. Do not let a green horn do the work.
They may get hurt or damage your UPS. Note some large UPS have
battery voltages that are hazardous, running at 240 VDC and higher.
We have seen 400VDC which will be fatal if you connect to it.
Super critical
UPSs
As you can imagine the more critical
a site becomes in regard to power not failing, the more technology
is required. Usually different UPS architectures are required
as you run up the critical ladder. We have some of the best products
for these types of critical systems.
PDUs - A huge
huge range
Power Distribution Units use
to be relatively simple, but now allow multiple AC feeds, AC
Mains and UPS or UPSs, power monitoring on each outlet. They
can be single or three phases and bolt right into a rcking system,
some with power bars alrady in place for multi server connections.
AC Power Conditioners
we covered this last month. MasTec
also has a line of lower power units designed <2000watts especially
for industrial and medical sites that need certification.
KVMs
Local and remote KVMs for small
office all the way up to server farms.
|