FEATURE UPS & STANDBY POWER
KNOWLEDGE IS POWER W
hatever a manufacturer produces, chemicals, cars or processing food,
there will be opportunities for improving energy efficiency, saving money and maintaining a facility’s competitiveness. In addition to saving money, minimising a facility’s carbon footprint will also improve its sustainability credentials. For those whose task it is to maximise
energy efficiency of an operation there are generally two primary options open to them: investing in more efficient plant equipment and optimising operations to change how energy is used. Capital investment in new equipment is generally unrealistic, which means that improving the way a plant is run is the only option. However, for many manufacturing
plants, electricity use is not optimised because managers do not have sufficient information to make such informed decisions. The simple function of installing metering on all of the primary energy-consuming plant in a factory or manufacturing facility will provide these managers with a huge amount of useful data; data that can be used to better optimise the way a plant is run.
DATA COLLECTION Meters such as Carlo Gavazzi’s EM24 3-phase energy analyser are perfectly suited to both active and reactive energy metering of individual items of machinery with a high power consumption. In addition to manufacturing plant, HVAC equipment, lighting circuits, computer servers and other power-consuming auxiliary equipment should all be monitored. This type of single phase application can be metered by Carlo Gavazzi’s EM111 and EM112 1-phase energy analysers. To monitor the system, record and transmit data, the energy
Will Darby of Carlo Gavazzi UK, outlines the benefits to be had from an appropriate metering and power quality monitoring strategy
the ability of electrical equipment to efficiently consume the energy being supplied to it. There are three principal power quality issues: harmonic voltages and currents, voltage instability, and poor power factor. All of these issues can result in higher
energy usage and consequently higher energy costs, higher maintenance costs and problems with equipment instability and failure. To enable manufacturers to easily
assess the quality of power in their facility, Carlo Gavazzi has developed the WM20, WM30 and WM40 smart power quality analyser range. These can be used in a wide number of
analysers can be connected to Carlo Gavazzi’s VMU-C Energy Management module. This is a micro-PC which is pre- installed with a web server. This smart energy monitoring solution makes it a simple task to determine energy usage of both individual items of equipment and the production facility’s overall energy usage, either in the facility or remotely, to see how much power is being used, where and when, both as real time consumption and as historical data.
CENTRALISED SYSTEM For larger manufacturing facilities with multiple items of plant a centralised system will allow all of the collected data to be pooled to help paint a bigger picture of energy use patterns. In addition to the quantity of power,
another key element of an energy management strategy for businesses consuming large amounts of energy should also be to improve the quality of power. For some businesses, power quality is an unknown. Yet power quality impacts
applications, ranging from building to industrial automation. Made up of three components, the base
unit provides a wide backlit LCD display and touchpanel to program, auto-scroll of measurements display and configure parameter values. It also displays virtual alarms and can accommodate accessory modules, for digital outputs and interfaces for faster communications using Modbus, BACnet over RS 485 or TCP/IP and Profibus; all in a compact plug-and–play modular format that streamlines installation and simplifies inventory management. Using these simple metering and
monitoring tools will enable a manufacturing business to analyse and trend electricity usage and to proactively and predictively manage electricity use in a single facility or even across an entire site. Having detailed power consumption data will help managers realise savings by making it easier to see when and where power is being consumed.
Carlo Gavazzi
carlogavazzi.co.uk
44 NOVEMBER 2018 | ELECTRICAL ENGINEERING
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