Oxford Health NHS Foundation Trust, Littlemore and Warneford Hospitals

Oxford Health NHS Foundation Trust – powerPerfected

Oxford Health NHS Foundation Trust provides specialist mental health services to people of all ages in Oxfordshire and Buckinghamshire, forensic mental health services across the Thames Valley, services for children and adolescents in Bath and North East Somerset as well as specialist eating disorder services for adults in Wiltshire. They also provide community health services to people in Oxfordshire.

How powerPerfector were able to help the Oxford Health NHS Foundation Trust

After Oxford Health NHS Foundation Trust sent its annual electricity consumption details, it was possible to give a provisional quote for the powerPerfector units and the energy savings that would be expected. A voltage logger was then sent to both Warneford Hospital and Littlemore Hospital for one week, the logger recorded the voltage level in the building via connection to a regular mains socket. It was found that the average voltage at each of the sites was as follows: 

• Warneford Hospital – 245 V

• Littlemore Hospital – 240 V

These figures are 15.0 and 10.0 volts higher than the nominal supply required in the UK respectively. After a survey of the site by an approved installation partner, the installations took place. After the installations the electricity consumption of Warneford Hospital and Littlemore Hospital were analysed, finding reductions attributable to the powerPerfector installations of 11.0% and 6.8% for Warneford Hospital and Littlemore Hospital respectively, corresponding to a combined projected annual carbon dioxide emissions saving of 115,000kg.

Voltage Power Optimisation. The less obvious benefits

Reduced maintenance, longer life

All electrical equipment has an optimum voltage at which it works best. A powerPerfected supply delivers that optimum and reduces the strain on your electrical equipment, leaving it to work more reliably and for longer.

Better quality power supply

Some things you may have accepted for years as product faults can turn out to be caused by a poor quality power supply. For instance, the life of incandescent light bulbs is almost doubled when the supply voltage is optimised. Now imagine that in relation to an IT network or an expensive piece of manufacturing equipment.

Missing the penalty kick

Power factor penalty charges – which are now uncapped in the UK – can be avoided if your power factor is above 0.95. If your power factor is at around 0.9 at the moment, powerPerfector could remove your exposure to these charges by improving the electrical efficiency of your site
Lower harmonic distortion and reduced neutral currents
powerPerfectors are able to filter harmonics on the mains incomer. Harmonic distortion is on the increase and can lead to random failures of electronic equipment – particularly computers.

Protection

Common transients – very brief spikes in voltage from the grid – are eliminated by powerPerfector. Transients at this level can cause catastrophic damage to equipment, but smaller, more common transient events will also shorten the life expectancy of electrical equipment over time. The looming energy gap means that the risk of transients is increased – Oxford Health NHS Foundation Trust is now protected.