Today's modern data centers are facing a difficult task. Before even taking into account current protection, there are many difficulties even securing enough supply for large plants. Gartner Research Organization predicts that will not suffice in this year (2008) 50% of the currently available data center power and cooling have the capacity to meet demand. Quocirca found that 43% of data center power of an approaching limit of 14% known (19% in the U.S.) already their Limit is reached.
This is due, in part to server sprawl and a lack of consolidation between procurement, application management and use energy. But even with a complete change in management around data centers still need to power generation and protection further up the boardroom agenda how their businesses are collecting and those of their customers rely on us so much on performance continuity.
Data center power protection must focus on availability, Redundancy, robustness and ease of maintenance with Uninterruptible power supplies in the middle and as a bridge between the Power Supply and standby power (whether a diesel generator, Fuel cells or another source).
The most important first step in the direction of uninterruptible power supply is critical in categorizing the expense, essential and non-essential size and then guarantee that UPS protection in terms of their energy consumption. Critical loads (IT infrastructure, servers, networks, routers and so on) are the ones that the company simply can not function without it. You will require UPS protection and redundancy to justify and may even extend life. Significant Loads (heating and emergency lighting, for example) are those that are not necessarily directly on business continuity, however, be necessary for health and safety reasons. You may need UPS protection to ensure their continuity up to the start-up generator is not, however, redundancy. Non-essential loads (printer, canteen) may temporarily not be lost in a power outage and do not have any form of battery backup power.
Sizing Uninterruptible Power Supplies can be difficult. If it clearly oversized, inefficient, and it starts to cost more to install. Conversely, 'undersized introduce, "the risk overloading the system. During an on-line uninterruptible power supply has a built-in automatic bypass for emergency situations, running close to borders with regular Design overload is a bad practice.
UPS Sizing: understanding the importance of "real power" is crucial current protection for sizing. Kilowatt (kW) are a measure of the real power of the load whereas kilovolt-amperes (kVA) are considered a measure of apparent power is. The difference between the two is the power factor (pf) and his size poses challenges when specifying UPS.
Maximum efficiency comes from operating at a power factor of 1.0 or "unity." An uninterruptible power supply, should have such high output power factor as possible, be determined. A power factor of 0.9 is the standard set by renowned manufacturers such as UPS Riello UPS.
Power systems should consist of units with an input power factor of not less than 99%, so that users are wasting energy cut. Today UPS should provide a small footprint to not use too much valuable High revenue-earning entity.
An on-line or double conversion UPS is to protect critical data center or telecom recommended pressures. The Inverter (which is supplied with power from a rectified mains voltage electricity grid is available) continuously forces the load of the UPS battery when voltage fails. The transfer from mains to battery with no break in supply, which is seamless for this type of installation is crucial.
Various UPS configurations available, including single, parallel and series-redundant with each episode in a different degree of resilience, MTBF (meantime-between-failure) and availability.
Resilience is built into the UPS in the form of an automatic static transfer switch. A sensor monitors the output waveform of the inverter. If the inverter fail short circuit, overload or error occurs, the static switch transfers the load on network without interruption.
Planning for the future: Datacenter pressures are not static and is under constant change and adaptation throughout the life of the plant. A phased "growth model" must be understood from the outset to allow for future expansion of power protection equipment.
UPS monitoring and maintenance: the introduction of HTML function in the software arena, it has modern UPS manufacturers on site to integrate sophisticated and remote monitoring within their hardware. In fact, enable Modern systems remotely 24 / 7 monitoring (either by the customer or the manufacturer's installation of all critical UPS, generator, air conditioning and fire) suppression equipment.
Today, modern UPS systems, mission critical equipment have joined an internal or external maintenance bypass, which will allow maintenance without shutting down the entire Network carried out and lose significant productivity. Proper maintenance was carried out in a timely and effective manner to the life of the UPS to extend, increase efficiency and a better return.
Force protection for today's data centers and providers such as UPS Riello of are vital, particularly products of the design to the needs and constraints of this type to adjust the installation. For more information on the planning, installation Power Protection and operating systems, read "The Power Protection Guide.
About the Author:
Robin Koffler is the General Manager for Riello UPS Ltd the UK subsidiary of Riello UPS (RPS S.p.A) a leading European manufacturer of Uninterruptible Power Supplies and a co-author with Jason Yates of The Power Protection Guide (ISBN 978-0-9554428-0-3)- available from Amazon.com
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