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Data Centres & Computer Rooms

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Holbrook Electrical is an independent specialist in the design and construction of business critical, close-control IT environments. These include data centres, modular computer rooms and communication suites.


For more than fifteen years HRE Ltd has worked closely with both public & private sector clients to create a wide range of resilient computer room facilities – from advanced, high-density server rooms to data centres in excess of 5,000 square feet.


With a uniquely experienced in-house team of mechanical and electrical staff, CAD operators, project managers and electrical engineers, HRE Ltd is one of the few specialists who can both design and build every aspect of your computer room build or upgrade project.


HRE Ltd provides computer room related services across the UK from our headquarters in Maidstone, Kent. Some areas we specialise in essential for the successful protection of your critical data is as follows:

Typical Installation Include:

  • Data Centre Upgrades (Planning and Implementation)
  • Full Electrical and Back-up Power Design and Installation
  • "Turn-Key" Data Centre Construction
  • Staff Training
  • Planned and 24/7 Reactive Computer Room Maintenance
Uninterruptible Power Supply (UPS):


A loss of power, even momentarily, can cause a system to crash. A UPS will maintain power by switching instantaneously to batteries in the event of a mains failure or even just a dip in power. It also conditions the power supply to reduce unwanted spikes and harmonics. It can be designed just to allow a controlled shutdown of the system or can be used with a standby generator to allow the facility to continue operating seamlessly.

Power Distribution Unit:

From small upgrades to entire installations Holbrook Electrical can design and build your PDU equipment and install it at your facility, cable, test and carry out full commissioning  and testing services. Apart from the above areas we work closely with specialist partners to cover all areas for total project management including construction companies, Veesda fire detection systems, Leak detection systems, fire suppression systems, security and access control to the site. We can also cover your environmental needs including air conditioning and ventilation, full BMS systems etc. Please feel free to contact us and discuss your requirements we would be pleased to assist you with your requirements


Interim power to the UPS will eventually be provided by racks of sealed lead-acid batteries located either within the computer facility or in a separate room. Battery capacity will be sized to provide power for sufficient time to allow a controlled shutdown of the system or for the standby generator to come on line.