ADVERTISEMENT FEATURE COVER STORY PREDICT AND PROTECT
Protecting the operation of critical electrical systems within industrial locations to prevent system down-time, and at the same time reduce costs, is one of the challenges keeping facilities managers and maintenance teams awake at night. However, what if it were possible to predict problems and so avoid them? Bender provide some answers
he Power Quality Management (PQM) system from Bender is designed to help customers protect critical electrical systems and achieve maximum availability of electrical supply by continuous monitoring of the whole system - identifying potential problems and issues before they seriously impact on a system. It combines power quality and electrical safety to deliver an integrated solution for DC and AC electrical environments that tracks the frequency and seriousness of power surges and interference, providing early warning of faults or failure for all critical aspects of the system to reduce down-time to a minimum. Bender’s PQM device also acts as an energy meter while checking the system quality, determining the energy consumption per cost centre and reducing high overhead costs. For example, it can determine how much energy is consumed by the measures taken to prevent system interaction, and will also show the effect of energy saving measures on the quality of the electrical supply system.
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RCM Power quality monitoring is particularly effective when combined with residual current monitoring (RCM) which detects degradation in the level of insulation in an installation or component. It issues a signal when the residual current exceeds a set value that can be chosen to suit the electrical application, effectively tailoring the equipment to the customer’s needs. RCMs are used primarily in facilities
where a fault should result in a signal but not in disconnection. This enables operators to detect faults and eliminate their causes before the protective devices disconnect the installation, so increasing operating safety and cutting costs. Transparency is an important element in
monitoring system quality, and Bender’s PQM units enable operations teams to identify, for example, when a power quality issue is due to interference or a complex load, or whether the regional supplier is delivering poor power quality.
6 OCTOBER 2014 | ELECTRICAL ENGINEERING
engineer. However, they can’t fix problems if they can’t effectively identify the issues. The PQM system provides
comprehensive information on the status and performance of the power system within a data centre including line voltages, phase currents, phase conductor
voltages, line voltages, active and reactive power import in kWh and kvarh, harmonic distortion, energy consumption and peak consumption, sag, swell and flicker. Importantly it delivers that
information in an intelligent and transparent way, enabling
THE NEXT GENERATION The new generation gateway Comtraxx CP700 Condition Monitor is the central point where all measured data is collected, filtered and evaluated to provide a comprehensive view of energy consumption and bring transparency to a data centre’s electrical service networks when used in conjunction with Bender Linetraxx PQM systems. Industrial surge suppressors provide protection from damaging power surges and spikes caused by lighting and utility accidents. However, systems can also be affected by so-called ‘dirty power’ problems and interference caused by frequency converters, electronic operation of motors, pumps and other large equipment inside facilities, switched mode power supplies used in most non- linear loads, and portable electronic devices including PCs, chargers, TVs and monitors. Monitoring the power quality of their systems to locate the source of interference and spikes, and identify how and when they occur, must be a priority for any facilities manager or power system
Above and below: Bender’s Power Quality Management (PQM) system is designed to help customers protect critical electrical systems and achieve maximum availability of electrical supply
managers to get a complete picture of how the power system is performing, and identifying potential problem areas. The information can be displayed by the screens on the CP700 itself or on a PC using existing IT infrastructure, and is not dependent on fieldbus wiring, eliminating bottlenecks caused by high volumes of data. Bender’s secure web server-based monitoring system also allows remote monitoring of sites.
Bender
www.bender-uk.com T: 01229 480 123
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