Subscribe to newsletter

Submit Article

 



Editors Note: UPS Ltd provide:

  • Uninterruptible power supplies

  • UPS systems

  • Power protection

Home

Advertise Here

Request Quote

CPD Seminar

 

Advertise Job

Advertise Job

Terms & Conditions

Terms & Conditions

Contact Building Design

Contact Building Design

e-mail Building Design

e-mail Building Design

 

- Building Design - Services & Construction Products Index

Request Information

Links Page

 

 

UNINTERRUPTIBLE POWER SUPPLIES LTD - Reliability Considerations In A Modern UPS System

Within a recent Uninterruptible Power Supplies Ltd survey, 75% of the respondents reported a power outage within the last 12 months. Users do not expect this situation to improve, with 78% seeing UK power reliability as an increasingly major concern over the next ten years. In this environment, any organisation using ICT equipment for business-critical operations must use uninterruptible power supply (UPS) protection. As the UPS system’s ability to respond reliably on demand depends both on the quality of its hardware design elements and of its suppliers’ support strategy, it’s worth reviewing both these factors while planning a power protection policy.

Today, most UPS systems use transformerless technology instead of the earlier transformer types. Advantages include energy benefits from improved efficiency, reduced input current total harmonic distortion (THDi) and a higher input power factor. Both capital and operating costs are reduced. Audible noise is also reduced and battery life is enhanced.

Arguably the most important benefit, however, is the size and weight reduction yielded by a transformerless design. A 120 kVA UPS, for example can be implemented as a 263 Kg unit with a 0.424 m² footprint instead of an installation with a 1.32 m² footprint weighing 1,200 Kg. This has enormous implications for flexibility and reliability, because it allows UPS systems to be configured from a set of rack-mounting modules rather than as monolithic floor standing units.

Modular rack-mounting configurations offer a set of reliability factors that, together, maximise power protection quality. Firstly, the modules’ transformerless design can reduce premature battery failure and increase mean time between failures (MTBF), due to the ease of adding additional modules to achieve redundancy. Secondly, a modular topology allows a sharply reduced mean time to repair (MTTR), because a faulty module can be simply ‘hot swapped’, eliminating lengthy on-site repair time. Increased MTBF and reduced MTTR together contribute to greatly increased availability, with up to ‘six nines’ or 99.9999% being possible.

Thirdly, a set of UPS modules can have redundancy built-in efficiently, providing resilience to failure.

For example an 80 kVA critical load requirement could be served by a UPS rack containing five 20 kVA modules; the load remains fully supported even if one module fails. And true system redundancy is possible, because each module can be designed to operate independently, with no common points of failure within the UPS configuration.

To realise modular UPS technology’s full power protection potential, it’s essential that users choose the right supplier together with the right hardware. In fact, over 90% of the survey’s respondents considered their UPS supplier’s maintenance and emergency callout support as important to their business as the hardware itself. Ultimately, the best strategy is to work with a supplier who becomes a power protection partner.

For example, many organisations now consider a generator as a desirable or even essential complement to their UPS within their power protection strategy. So, can the UPS supplier offer a matched UPS/generator pair? Alternatively, can they advise on matching of the UPS to another supplier’s generator? Equally, they should be able to discuss UPS sizing for the critical load. Although capacity, battery autonomy and redundancy must be appropriate for the load’s size and criticality, there is no benefit, and probably unnecessary cost, in providing excess capacity – especially as modular systems can be easily incremented later as needed.

The support strategy, like the hardware, should be realistically matched to the user’s needs. Initial site surveys ensure the right equipment is specified, while integration with related equipment and site access and installation logistics are planned. A preventative maintenance schedule ensures that batteries are kept in optimum condition and potential problems are identified and repaired before they cause failures. Remote monitoring and callout contracts can be negotiated to match the criticality of the load.

Clues about a prospective UPS supplier’s actual rather than claimed support capability and commitment can be gathered during early negotiations. How timely, detailed and accurate are their written and verbal responses? What is their product and project documentation like? Are they happy to attend onsite project meetings? Do they take health, safety, and environmental as well as quality standards seriously? Are their technicians well trained, and is their spares stock locally available? Are they willing and able to offer recent industry references?

Finding the supplier that combines the most efficient and reliable products and most comprehensive support strategy into the best power protection package for a given load isn’t easy, but it’s the approach that pays best dividends in terms of protection peace of mind and ultimately lower cost of ownership.

E-mail Uninterruptible Power Supplies Ltd

UPS Ltd Product Information


3M Free Interactive Seminar Hearing Protection News 060111

Armstrong Armex II Expansion System News 060111

Armstrong Ceilings Interactive Book Of Ideas News 070111

Cablofil PVC cable trays Wire cable trays Cable systems News 040111

Dulux Trade Partnership Scheme 050111

Fakro Sponsors Skiing World Cup News 050111

John Brash Western Red Cedar Shingles News 050111

Leaderflush Performance Doorsets The Savoy Hotel News 060111

Marley Sustainable Aluminium Rainwater Systems Ecobuild News 070111

Mumford New Product And Technical Brochure News 050111

Mumford The Performance Timber Products Group News 070111

Osram New LED product Range For Signage News 060111

Panel Systems Fabricated Panels Weston Grand Pier News 070111

Polyflor Commercial Vinyl Floor Covering News 060111

Rada V12 Shower And Diverter Range News 070111

Renderplas Beading Victoria And Albert Museum News 040111

Riegens T5 Lighting Flourescent Lighting News 060111

Roman Bathroom Shower Designs DIY SOS News 070111

Sunbell Interstitial Blinds Commercial Blinds News 060111

Tarkett Sports Flooring Henry Beaufort School News 070111

TBS Fabrications School Washroom Cubicles News 070111

Trox Joachim Backes new Managing Director 050111

UPS Reliable Uninterruptible Power Supplies News 040111

Weatherite Building Services Enfield College News 060111

Windowmaster Automated Window Control Systems News 050111


News Categories:
Uninterruptible power supplies UPS systems Power protection

Arundel Jones Associates Ltd
Hill Farm Business Park, Linton Hill, Maidstone, Kent ME17 4AL
Tel : 01622 745333

news@buildingdesign.co.uk

See also:

| BuildingDesign Directory | BuildingDesign Tenders |

|BuildingDesign News Archives | 2006 | 2007 | 2008 | 2009

| BuildingDesign Recruitment | AJA Part Time Jobs Board |

© 2010 copyright all rights reserved Registered in England and Wales No. 07334149