TECHNOLOGY IN ACTION ADVERTORIAL
Don’t let harmonics get you down Top tips for choosing the right harmonic filter
n 1976, it was discovered that the bacteria causing Legionnaires disease, an atypical strain of pneumonia, had always been present in water, but it was the precise temperature of the water in heating, ventilation and air conditioning systems that facilitated the bacteria’s maximum reproduction levels. This is just one example of the unintended consequences of technology.
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A similar and more recent story comes from the world of industry and features the growing problem of harmonic currents and utility level voltage distortion, as a result an increasing number of non-linear loads in industrial and commercial environments. Here, John Mitchell, global business development manager of supply, repair and field service specialist, CP Automation, shares his top tips for companies that want to commission or replace harmonic filters.
Active versus passive The first thing you should decide is whether you need a passive or an active harmonic filter. The traditional option is an electro-mechanical or semiconductor controlled passive filter, used to minimise power quality problems in the network. These filters operate mainly on a fixed basis and are tuned to a harmonic order close to the order to be eliminated.
Often new equipment is specified to meet a THID%, but the problem for many plants is they do not know how bad their site is already. It’s almost like fixing a sticky plaster to a deep wound. Instead, companies should look at what is physically and commercially viable in the long term.
When making a decision, you can also consider a mixed solution. By fitting passive filters on many applications, you should be able to add a smaller
CP Automation 01724 851 515
www.cpaltd.net
Union secure repeat orders from loyal customer E
mployee Owned company Union Industries, the UK market leading manufacturer of industrial rapid roll doors, has returned to long-standing customer, James T. Blakeman & Co Ltd to install a new Matadoor that will help maintain its strict hygiene standards.
James T. Blakeman & Co Ltd, the meat-based product supplier, has had the Matadoor fitted by Union’s technicians between its Production and Packaging areas to create a divide for hygiene reasons during wash-down periods.
The Matadoor has replaced an old problematic
high speed door from another manufacturer which could not withstand the high usage and arduous environment within this busy production area.
Used by pedestrians and operated by a push button, the door – the steel parts of which are made from Grade 304 Stainless Steel – will also help to maintain a consistent temperature thanks to its opening speed of 1.6m per second and auto-close operation, which helps to prevent the cold air escaping and warm air entering the area.
The Matadoor also comes with free entry into Union’s Lifetime Warranty Scheme, which was introduced several years ago. This cover not only provides an extensive guarantee but also includes service visits from Union’s highly trained technicians as required.
Established in 1953, James T. Blakeman & Co Ltd manufactures and supplies chilled, cooked and frozen quality sausage meat-based products supplied to the wholesale, catering and food services sector.
Neil Irwin, Technical Sales Engineer at Union Industries, said: “James T.Blakeman & Co Ltd now has several of our doors installed at its Newcastle-under-Lyme site since 2014, when we installed an Eiger door to help maintain a constant temperature within their freezer. Following that initial installation we installed four partial Stainless Steel Matadoors for temperature control in the Chilled Warehouse, followed by a further Eiger Freezer Door as part of a new Tempering Room Project.
“A large proportion of our sales are to existing clients that have seen our products in action and understand why they are regarded as the best on the market – it’s a great testimonial.”
Brian Littleton, Head of Hygiene & Projects at James T. Blakeman & Co Ltd, said: “The high speed doors we utilise in our facility are integral to our operation, which means they must be durable and efficient. That’s why we continue to take advantage of Union’s first class, British- built products and its continued maintenance service.”
Neil Irwin, Technical Sales Engineer at Union Industries and Steve Collinge, Head of Operations at James T. Blakeman & Co Ltd
Union Industries 0113 244 8393
www.unionindustries.co.uk
FACTORY EQUIPMENT | NOVEMBER 2016 29
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