A range of single phase UPS

Rack or tower UPS

Stand-alone UPS

Some smaller units can also be known as pluggable UPS. Up to 3KVA they are also known as ‘plug and play’ UPS – 3KVA UPS are the largest UPS that can be plugged into a standard 13 Amps supply.

Single phase UPS do not normally go above 20KVA because their input power requirement is sometimes impractical due to mains incomer limitations (at 15KVA a 100Amps mains supply would be required); or the cable sizing which would be required to handle the high current levels on both the input and output of the UPS.

They can be either mounted in either a 19’’ rack or be floor standing (it is important to specify which version is required); although some UPS are known as RT models. These can be configured in both rack and tower mode.

They can be as small as 300VA which would be sufficient to supply a conventional desk-top PC; up to 20KVA for a relatively small server room.
They are available in the following technologies, which denote the differing levels of voltage conditioning required;

Off-line UPS
These provide little, or no, voltage conditioning other than to provide some back-up power in the event of either: mains failure, long power sag or surge.

Line-interactive UPS
These also protect against under voltage and over voltage without going into battery mode.

On-line UPS
These are also known as ‘double conversion’ UPS and provide 100% voltage conditioning. They rectify the AC mains into a DC voltage which is connected to an inverter input to provide a good clean AC waveform for the UPS output.

A range of three-phase UPS

Three-phase UPS will have a three phase input supply (415V in the UK). However, they may have either a three or single phase output (depending on the customer’s requirement) - although it is more usual to have both three phase input and output UPS.

These are the bigger members of the UPS family and are designed to share their power requirements over the three main incomer phases.

Three phase UPS will normally start around 10KVA and go up to several MVA if they are connected in parallel.

With three phase UPS requirements there are a variety of options available, including:

We can provide all of these and more.

We can offer a turnkey package for these large requirements including:

Generators

As can be seen, generators come in a variety of shapes and sizes. Specialist Power Systems Ltd can supply, install and maintain generators for all requirements; whether it is for a few KVA or several MVA. Most large generators are diesel powered; however, we can also supply gas turbine sets, if required for larger operations.

For small and medium generators it is also possible to supply units powered by mains gas.
Our generators can be installed either inside a building with the appropriate exhaust ducting and air intake, or outside with acoustic and weather-proof enclosures.

We can supply, install and maintain all sizes of generator.

Battery Power backup

updated soon..

Testing for hot spots

System fault-finding

Routine maintenance

Documentation

Specialist Power Systems Ltd has a team of highly trained experts in the UPS, Generator and Auxiliary Power industry. We can offer help, advice and equipment for all requirements and support from ‘cradle to grave’.

For instance; if you have a new complex requirement and need expert help we can offer the following:

If you have an existing system, we can support you with the following: