Eaton produces a range of UPS solutions
Riello PowerBox containerised UPS solution
of Riello UPS, Robin Koffler. ‘Rising energy costs and green legislation have made energy saving a priority when it comes to saving costs and UPSs can help businesses achieve this. Manufacturers like Riello UPS have invested heavily in developing and introducing products with high efficiency ratings, as well as finding ways of ensuring the eco credentials of power protection systems.’ Flywheel UPS is one such technology that has increased in popularity due to its compact size (in comparison to battery banks), high-energy efficiency, low maintenance, lifetime cost, silent operation and zero emissions. Flywheels can also reduce the need for costly cooling within the UPS vicinity.
What’s new in UPS systems
1. Emerson Network Power’s Trinergy systems now boast overall operating efficiency levels of 98 per cent while maintaining Tier 4 data centre requirements. In addition, each product follows Emerson’s philosophy for easy installation, serviceability and rapid maintenance on customer premises, through design features such as front access and modular internal racks. Emerson’s Liebert APM has joined Trinergy and Chloride 80-NET by achieving the Carbon Trust’s Enhanced Capital Allowance (ECA) accreditation and been added to the Energy Technology Product List (ETPL).
2. Containerised UPS solutions have increased in popularity in recent years, offering lower construction costs, as well as lower running costs. Traditionally seen as a temporary measure for projects that have overrun, or in a disaster recovery situation, they are now seen as the leading option for businesses looking to rapidly expand capacity. Containerised UPS solutions, such as Riello’s PowerBox, are easily developed and installed wherever and whenever needed, with minimal impact on existing plant room and facilities. They contain all of the necessary switchgear and distribution panels to deliver uninterruptible power from a combination power solution.
3. Schneider Electric’s MGE Galaxy 300 has been specifically developed with the electrical contractor in mind. Available through the electrical distribution channel, the UPS has been optimized to offer:
n Double conversion online topology; n Compact footprint; n Simple installation and commissioning; n High efficiency; n Power ranges from 10 – 40 kVA; n Single or parallel module configurations; n Easy serviceability; and n Choice of battery autonomy times with fast recharge.
‘Flywheel technology has advanced beyond the large, industrial solutions of yesteryear,’ says Koffler. ‘They are now commercially viable for UPS application and data centres in particular, in which the necessity to reduce energy consumption, address green initiatives and reduce total cost of ownership is equal to the need to provide resilient and scalable power protection for critical applications.’
Going forward Other leaps forward have been made. ‘Transformerless technology drives modern UPS design,’ says Mike Elms of Uninterruptible Power Supplies. ‘It immediately improves energy efficiency by around five per cent across the system’s whole load span, substantially reducing energy and cooling costs. Transformerless UPSs also present a higher and more stable input power factor, which reduces input current and sometimes electricity costs.’ Transformerless systems also offer significantly reduced size and weight. This has enormous implications for power protection, because UPS systems can become sets of rack-mounting modules operating in parallel rather than monolithic floor-standing units. Such configurations improve reliability through improved resilience to failure and improved availability. ‘Resilience to failure is a property of N+1 redundant systems where the UPS can fully support the critical load even if one module fails,’ explains Elms. ‘UPS availability increases because a faulty module can be quickly replaced, typically within about half an hour, compared with the six hours typically needed for component level diagnosis and repair. Additionally, battery reliability is improved through better charging circuitry.’
44 ECA Today September 2012
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