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Growing your fan base

Failure to provide adequate cooling for an enclosure is in many instances to plan for the electrical equipment or electronics it contains to fail, with resultant cost, labour and replacement equipment implications.  Overheating can be prevented with the addition of the correct fan and with careful selection, this adds little to the overall cost. Aerco distributes fans from ADDA, Etri, Sofasco, Delta, Torin-Sifan, Comair Rotron and many others, and offers no-obligation technical advice on the best products for your application and budget.   Jason Slaughter takes a look at a selection.

For a high airflow, competitively-priced solution, the Sofasco D17051V12-HBL axial fan in a 172 x 51mm frame size is suitable for cooling many types of enclosures.  With a maximum airflow capability of 103 litres/sec (220CFM), this rugged fan features a die-cast aluminium frame, a plastic (UL94V-0) impeller and a high performance dual ball-bearing system, and is used extensively in cooling UPS systems, commercial refrigeration units and other demanding applications in the medical, telecommunication, commercial, military aviation and aerospace industries.

As well as standard axial and centrifugal design fans, many other airflow designs are available from the world’s leading fan manufacturers to meet a huge variety of applications.  Fans and fan accessories now include backward curve motorised impellers, frameless fans, tangential cross-flow blowers, flat blowers, chip coolers, CPU coolers and combined heat pipes and fan assemblies.   There have been developments and improvements to bearings – ball bearings are often the most costly component in a fan, and different types of bearing are now available from most manufacturers. In addition to conventional ball and sleeve bearing fans, some use both within the same fan assembly.  Different types of impeller are now in common use, including sickle blade, paddle blade and static outlet blade fans.

Well-known in the electronic thermal management field, particularly in the IT industry, ADDA has developed its GP Series for modern, densely packed electronics enclosures.  A high performance DC fan that delivers high airflow against high system pressure, this highly-efficient venturi design is combined with a motor delivering up to 12,000 rev/min to provide airflow up to 103 litres/sec (220 CFM).  Seven frame sizes and three supply voltages (12VDC, 24VDC and 48VDC) give 30 different combinations for design flexibility.  This series also has a quality ball bearing system, and is a cost-effective answer to cooling requirements providing maximum heat dissipation with minimum power consumption and low operating noise levels.

For enclosed electronics and equipment, Delta, the world’s largest manufacturer of fans and fan components, offers many thermal solutions based on DC brushless fan technology, to offer the maximum operating performance, with reduced downtime and optimal thermal protection.  The AFB Range of axial fans is often used for telecommunications racking, and is available in sizes from 40mm x 40mm up to 172mm x 172mm.  Varying voltages from 5VDC to 48VDC are available across the range, with airflows starting at 6 CFM up to 290 CFM.  Delta has also just announced a new line of EC (Electronically Commutated) fans, which are eco-friendly and use DC technology in AC format for AC applications.  These offer high efficiency for energy saving, combined with low vibration and low noise.

About the Author:

Jason Slaughter specialises in advising on technical issues to provide practical solutions to cooling problems.  He can be contacted at Aerco, a stockist and franchised distributor of electrical components that partners with world-class manufacturers to supply aerospace, defence, medical, industrial, rail and transportation markets throughout the world. 

Message or phone Jason on +44(0)1403 260206 and find out how he can help.

REF AE253

Oxley LED lamps in stock at Aerco

Three Oxley LED lamps in various coloursNow in stock at Aerco, the distributor and stockist of electrical and electronic components servicing hi-rel markets, is the OXL/CLH/100 range of LED lamps that will find extensive applications in military and civil aircraft and vehicles.

Offering the inherent advantages of LED technology that include: greater reliability, safety and durability, improved efficiency, lower operating temperatures and operating costs, the CLH/100 series has a 10mm mounting, an 80° or 100° viewing angle and is sealed to IP66.

With an operating and storage temperature of -40 to 85°C, the range is available in standard and high intensity versions offering a luminous intensity from 34 to 1,250mcd.   Current rating is 15 or 20A and a range of voltage options provide a high degree of design flexibility.

The range is built with an aluminium black nickel body and is available in low profile or prominent format with flush mounting.

To learn more about products at Aerco, please message us  or call us on 01403 260206.

Winter Woes

Two planes on a runway in the snowYou may be familiar with the film, “Planes Trains and Automobiles”, a movie starring the great Steve Martin and the late, great, John Candy. This film follows the adventures and misadventures of Steve Martin’s character as he struggles to get home for the Thanksgiving Holiday, initially hindered, but eventually helped by John Candy’s character.

This film is almost a documentary. At the end of November, the transport system of the USA goes into meltdown as everyone tries to get home for the holiday. Planes fill up with passengers, and freight tends to be pushed onto the back burner, causing delays in deliveries.

Then, we have Christmas. Obstructing the US Mail is a Federal Offence, punishable by imprisonment. I have known Freight Consignments to be taken off Aircraft to be replaced by Christmas Cards, and it is a very brave and foolish Cargo Master who objects.

And if that isn’t bad enough, we have the weather. Warm, moist air is drawn up from the Gulf of Mexico, and slams into Arctic blasts from the north, creating super cells that dump huge amounts of snow on the Eastern Seaboard, that take days to clear, exacerbating existing delays in the shipment of goods.

So, as we move into winter, if you are sourcing goods from the USA, it is a wise virgin who keeps her lamp trimmed, or in this case, it is a Wise buyer who gets his order in early.

If you have a requirement for December or January, or even February, call us now to discuss scheduled deliveries. Better that your goods are on our shelves rather than sitting on the tarmac in New Jersey. It’s all about flattening the curves.

To learn more about products at Aerco, please message us  or call us on 01403 260206.

Aerco now stocks Telegartner RF coaxial connectors

Various Telegartner RF Coaxial ConnectorsAerco is now stocking the Telegärtner range of RF coaxial connectors.  Made by the German company since 1945, the range meets the highest standards in terms of specification and reliability and is widely used in the mobile communications, broadcast, industrial, test and measurement, radar and satellite, transportation and renewable energy industries.

Products include high precision connectors to meet the requirements of laboratory measuring instruments, miniature connectors for densely packed electronic systems and high power versions for use in transmission equipment.

A wide range is stocked on quick delivery and low MOQs.

To learn more about products at Aerco, please message us  or call us on 01403 260206.

Modern hook-up wire improves design flexibility, reduces carbon footprint and saves on transportation costs

Various coloured wires with a field and the sky in the backgroundAerco now stocks a wide range of Alpha Wire EcoGen™ hook-up cable that has a diameter 50% and a weight 58% less than traditional PVC insulated hook-up wire. 

Approved to UL AWM 11028, the cable contains no halogens, phthalates, or heavy metals and the mPPE thermoplastic insulation meets RoHS and WEEE requirements for the elimination of hazardous substances and recyclability. 

Cable technical sales executive at Aerco, David Cairns, explains the advantages of using modern cable designs saying: “A popular cable is the Alpha 6712, a 24awg, 600V, 105°C rated cable with an overall diameter of just 1.09mm, a reduction of more than 50% over standard UL1015 PVC hook-up wire.  This improves design flexibility of modern, densely packed assemblies and its ‘green’ characteristics significantly decrease the carbon footprint. But, what is not always considered is that a typical 1000ft reel of PVC insulated cable weighs 2.46kg whereas a similar reel of Alpha 6712 weighs just 1.03kg, a reduction of 58% dramatically reducing transportation costs.”

To learn more cable and wire services and products at Aerco, please message us  or call us on 01403 260206.

RoHS Examined

RoHS Compliant SymbolThe Restriction of Hazardous Substances Directive 2002/95/EC, (RoHS), short for Directive on the Restriction of the use of certain Hazardous Substances in electrical and electronic equipment, was adopted in February 2003 by the European Union. 

China RoHS (Restriction of Hazardous Substances), officially known as Administrative Measure on the Control of Pollution Caused by Electronic Information Products is a Chinese Government regulation to control the same materials as RoHS 2. Unlike EU RoHS 2 Directive, however, this does not allow any technology exemptions. This article will be concerned with EU RoHS.

This RoHS 1 directive took effect on 1 July 2006, and was required to be enforced and become law in each member state. This directive restricts (with exceptions) the use of six hazardous materials in the manufacture of various types of electronic and electrical equipment. It is closely linked with the Waste Electrical and Electronic Equipment Directive (WEEE) 2002/96/EC which sets collection, recycling and recovery targets for electrical goods and is part of a legislative initiative to solve the problem of huge amounts of toxic electronic waste.

The RoHS 2 directive (2011/65/EU) was an evolution of the original directive and became law on 21 July 2011 and took effect 2 January 2013. It addresses the same substances as the original directive while improving regulatory conditions and legal clarity. The CE logo indicated compliance and RoHS 2 declaration of conformity was now detailed.

The RoHS 3 directive (2015/863) adds four additional substances. Slated for adoption and publishing by EU governments internally by the end of 2016, the additional four substances shall be applied by 22 July 2019 except where exemptions permit.
The restricted substances are;

1.    Lead (Pb)
2.    Mercury (Hg)
3.    Cadmium (Cd)
4.    Hexavalent chromium (Cr6+)
5.    Polybrominated biphenyls (PBB)
6.    Polybrominated diphenyl ether (PBDE)
7.    Di-(2-ethylhexyl) phthalate (DEHP) RoHS 3 directive (2015/863)
8.    Butyl benzyl phthalate (BBP) RoHS 3 directive (2015/863)
9.    Dibutyl phthalate (DBP) RoHS 3 directive (2015/863)
10.  Diisobutyl phthalate (DIBP) RoHS 3 directive (2015/863)


All well and good. But in everyday speak, we always talk of RoHS compliance, and rarely consider which Directive to which it complies. At my previous company, if we were asked if a product, stocked upon our shelves was RoHS compliant, the answer was “Yes, at the time of manufacture” When requesting RoHS compliance, because the directive is rarely, if ever, stated, we must always consider, and be aware of, the date of manufacture of the product before we implement its use. This is not usually a problem at Aerco Ltd, as we are proud to offer Full Traceability on the majority of the items that we hold in stock, and can inform you if the product we offer does not. So ask when you request a quote. 


Also, new substance restrictions being considered for introduction in the next few years include phthalates, Brominated Flame Retardants (BFRs), Chlorinated Flame Retardants (CFRs), and PVC. Yes, PVC. This means that all PVC insulated wires will no longer be RoHS compliant. However, Alpha Wire’s EcoGen™ Wire and Cable products are free of all of these, so, if you are involved in designing new products, call us at Aerco Ltd and we shall insure that your products are future proof. 

To learn more cable and wire services and products at Aerco, please message us  or call us on 01403 260206.

Sixty years and counting

60 year anniversary logoBill Laughton founded Aerco (Aviation Electrical and Radio Company) in September 1956 and so we celebrate our 60th anniversary in September of this year. The company started out in a wooden workshop in Horsham installing radio equipment in aircraft and over the next ten years developed its engineering and technical capabilities servicing navigation lighting and other electrical aircraft equipment in both the civil aviation industry and the MOD.


Gradually, a stock-holding and distribution element was added to the business and slowly, but very surely, the company developed into the major electrical and electronics component distributor that it is today. 


One of a breed


Bill was a pioneer of the UK electronics distribution industry being one of a select band of trailblazers that included Fred Lane of FC Lane, George Stuart of Sasco, Alf Pegg of AWP and Cyril (Lofty) Freeman who at that time was at Richfield Electronics.  All these entrepreneurs formed companies in the Horsham and Crawley area of West Sussex and went on to run successful and long lived businesses.


A true family business


Bill handed over the running of the company to his son, Rob, in 2000 but continued working in the company until shortly before he died in September 2013.  At this time there were three generations of the Laughton family working in the company Bill, Rob and his wife, Fiona, and their son Harry. 


The more things change ….


When Bill started out there were no computers, no mobile phones and no fax machines, scanners, e-mails or websites.   Even ballpoint pens were in their infancy. 


Modern communications are now far more sophisticated of course and have changed the relationship between distributors, their suppliers and customers.  At Aerco we have always been aware of the potential danger that instant, electronic communication methods can bring and try very hard to ensure that we do not reduce the close and vital interaction that we have with our customers. 


Handling growth and change


Aerco’s growth has been impressive over the past decade due to organic growth and the acquisition of companies like Fan Technology in 2000, Spartan Europe in 2008 and Electro Cables in 2015.  Still family-owned it is now an SME with a turnover of just over £13 million.
It is a challenge to maintain growth and profitability in a changing market in which large, broad-line, multinational distributors dominate with the top 10% of distributors controlling more than 90% of total sales. 


Aerco’s basic principals are to form strong working partnerships with both suppliers and customers while continuing to invest in long-term price agreements and call-off orders.  These, backed up by a large stock holding of top quality products and high customer service levels, will be the keys to continued success.

 

Defense de Fumer

ecogen from AlphaWire logo in various green letteringOn the 4th May 1982, HMS Sheffield, a Type 42 Guided Missile Destroyer being deployed in The Falklands Conflict, was attacked by two Argentinian Super Etendard aircraft armed with Exocet Anti-Ship Missiles. The missiles scored a direct hit, but whether or not they exploded is open to conjecture and debate. However, what is beyond debate is that damage caused by the missile impact severed the high-pressure fire main on board, and the resultant fire, caused by burning rocket propellant, ignited diesel oil from the ready-use tanks in the engine room, and other inflammable materials used in the ship's construction. Twenty crew lost their lives, and the fires continued to burn unchecked for a number of days after the ship was abandoned. The ship finally floundered on the 10th May.

On the 18th November 1987, a lit match dropped on an escalator at Kings Cross Tube Station resulted in a fire. Thirty-one people, including London Fire Brigade officers, died and 100 people were taken to hospital, 19 with serious injuries.

Although there were other major contributing factors in both cases, the use of PVC insulated cable is both situations did not help, and probably made bad things worse.

When PVC burns, contained within the smoke is Hydrogen Chloride gas. When this condenses with water vapour, or onto a wet surface, Hydrochloric Acid is formed. On the Sheffield, this acid burnt through the printed circuits on the Fire Fighting equipment, allowing the fire to get out of control, and at Kings Cross, people in poorly ventilated areas, trying to escape, choking and suffocating in the dense acrid smoke, were unable to safely evacuate.

We learn by our mistakes, and new materials were sought that could replace PVC, but without the harmful effects of acidic smoke. Hence the introduction of Zero Halogen cable, which is produced without using any of the Halogen group of elements, Florine, Bromine, Iodine and Astatine, as well as the Chlorine found in PVC. Materials within the Polyethylene family have always been favourite, as well as Silicone, but recently a new weapon has been added to the arsenal.

Alpha Wire Inc, for whom Aerco Ltd are Premier Distributors in the UK, have recently introduced the EcoGen range of cables. EcoGen products contain no halogens, phthalates, or heavy metals. The mPPE thermoplastic insulation and jacketing can also be easily recycled. They meet RoHS and WEEE requirements for the elimination of hazardous substances and recyclability.

If you have a need or desire to move away from using PVC insulation, contact us at Aerco Ltd, and we shall be happy to guide you to the right product for your requirements.

To learn more cable and wire services and products at Aerco, please message us  or call us on 01403 260206.

Breaking Old Habits

Close up of cable split into 4 various coloured wiresWe all do it. We stick with the familiar, the ol’ faithful, the trusted recipe and the lucky pants. It’s worked before, so we know that it will work again. But if that’s the case, why isn’t everything made of wood, bone, leather and stone?

Because every now and again, something new comes along, a new material, a better way, one that will, in time, become the new standard, and that is what is happening today.

Alpha 3070 is a 24awg, 600V  and 105°C rated, UL1015 PVC insulated hook-up wire, and as standard as you can get. A 1000ft reel weighs 2.46kg, and it has an overall diameter of 2.23mm. This is what a colleague of mine called electric string, it was the base level in any design requiring 600V and 105°C

But, Alpha 6712 is also a 24awg, 600V and 105° rated cable, part of the EcoGen™ range. Approved to UL AWM 11028 it contains no halogens, phthalates, or heavy metals. The mPPE thermoplastic insulation is also easily recycled. It meets RoHS and WEEE requirements for the elimination of hazardous substances and recyclability. But, that’s not all. The overall diameter of this product 1.09mm a reduction of over 50%, and a 1000ft reel weighs 1.03kg, a reduction of 58%!

If it wasn’t for the other approvals that apply, this would bring it close to the requirements of cables used in avionics, and the savings in so called lifetime cost are not to be ignored either. With lighter, reduced diameter looms, the payload or the cost of transportation can be greatly reduced, decreasing the Carbon Footprint of your products.

So, if you are working in a design capacity, and you are about to go with the ol’ faithful, stop a moment, and contact us at Aerco Ltd, and we shall be pleased to help you break a habit of a lifetime

To learn more about the cable and wire services and products at Aerco, please message us  or call us on 01403 260206.

Aerco stocks zero-halogen EcoGen cable from Alpha Wire

Three EcoGen cables showing internal multi coloured wiringAs a premier UK distributor of Alpha Wire, Aerco stocks the EcoGen™ range of high-performance wire and cable products that contain no halogens, phthalates or heavy metals. With mPPE thermoplastic insulation and jacketing that can be easily recycled the product range fully meets RoHS and WEEE requirements for the elimination of hazardous substances and recyclability while offering considerable size and weight savings when compared to traditional PVC and XLPE wire and cable.

The dangers of PVC insulated cable when major fires occur cannot be overstated.  When PVC burns hydrogen chloride gas is formed and when this condenses with water vapour or on to a wet surface, hydrochloric acid is formed sometimes with catastrophic consequences.

This has been proved to be a major factor in conflagrations such as, in 1982, when HMS Sheffield was lost in The Falklands conflict with 22 members of the crew losing their lives and in the 1987 escalator fire at Kings Cross tube station when 31 people died.

The recognition of these dangers led to the introduction of zero halogen cable that is produced without using any of the halogen group of elements, florine, bromine, iodine and astatine, as well as the chlorine found in PVC. Materials within the polyethylene family have always been favourites for this technology as well as silicone, but recently EcoGen products with mPPE insulation and jacketing developed by Alpha Wire have taken the technology to a new level. 

To learn more about the cable and wire services and products at Aerco, please message us  or call us on 01403 260206.

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