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Visit Carter Sullivan
Visit Carter Sullivan
View UPS products live in our demo room
1 Daniel Mullen Court, (formerly Station Court), Station Road, Sharnbrook, Bedford MK44 1PU
FAQs – find the answers to our most popular questions

No, our site surveys are carried out free of charge – please get in touch to book in your free no obligation survey.

If you have an existing bypass switch and the replacement UPS is like for like in terms of power rating then you may not need to power down your equipment. If there is no bypass switch in place or you are increasing the power then you will likely need to power down. A free site survey will determine what is required and we will work with you to keep downtime to a minimum.

No, all of our engineers and deliveries are handled by our own employees in our vehicles.

Yes, we regularly install standby generators to accompany a UPS, a generator is ideal to achieve longer back-up times. A generator install requires careful planning but we will project manage your install professionally.

Yes, we regularly remove old UPS units no longer required. We will arrange shutdown and disconnection of the UPS, strip and removal from site and safe disposal in line with regulations. We will also provide a disposal certificate.

An Uninterruptible Power Supply (UPS) is used to protect critical loads from mains supply problems, including spikes, voltage dips, fluctuations and complete power failures using a dedicated battery. A UPS system can also be used to ‘bridge the gap’ whilst a standby generator is started and synchronised.

Generally loads up to 20kW will be single phase. Above this will require three phase. It is possible to have three phase UPS at smaller loads, often if you have multiple racks we would power the racks off each phase of the UPS, making sure everything is labelled.

The UPS sits between raw mains and your critical load. The raw mains is converted from AC power to DC power by the UPS rectifier, it then charges the battery. The power then gets cleaned and smoothed by the UPS inverter and outputs to your critical load. In the event you lose mains your critical load is powered by the UPS battery until power is restored or you shut-down your equipment safely without losing or corrupting any data. Not only does the UPS protect you in the event of a power failure, but it also protects you from fluctuations and ‘dirty/noisy’ power which can damage IT equipment.

Definitely, we can identify the size UPS you need by either creating a kit list or equipment you want to connect to the UPS, or we can place measuring equipment to identify your exact current draw.

We are factory trained by the original manufacturer to service and commission various UPS units ourselves. We also partner with the major manufacturers and have direct access to their support if required so you can be confident of the service we provide.

Although it might seem more cost effective to buy several smaller UPS’s, in the long-term it generally makes more sense to install a larger centralised UPS. The upfront cost for electrical work may be higher but the cost of the hardware and running costs over 10-15 years are lower. A sales manager can advise you on the best route to take.

Yes, we delivery and position UPS units every day in various locations. We have our own team of engineers and our own delivery vehicles who will be able to position the UPS in most locations including up and down stairs and in restricted access spaces.