Products Editor’s Choice
Angled connector hood designed for easier operation
an angled cable outlet.
The new hood is designed with the shape of the human hand in mind, and enables opti- mum housing clamping opera- tion. In particular, it makes it easy for untrained personnel to carry out perfect connections. The risk of faulty operation is reduced, and operating conve- nience is increased.
The division of the hood into two makes it easy to gain access to the electrical contacts, allowing servicing and testing to be carried out efficiently.
To complement its Han-Yellock(R) industrial connector, HARTING has introduced a new hood with
This type of housing has a range of applications covering M20, M25 and M32 cable entry points, which can be used in operator consoles, input devices, displays and support arm systems. HARTING
www.HARTING.com T: 01604 827 500
Cooling sensitive equipment Preventing switchyard failures
A new handheld instrument has been introduced by EA Technology to help locate internal partial discharge (PD) activity in high voltage open termi- nal switchyard equipment, used for power trans- mission and distribution.
The PD Hawk enables operators to identify PD emissions (which are characteristic of the break- down of internal insulation that can lead to failure),
from a safe distance. A whole switchyard can be scanned in minutes. The battery powered PD Hawk can be used to locate PD emissions in assets including
circuit breakers, isolators, disconnectors, surge arrestors, cable sealing ends and instru- ment transformers.
The PD Hawk can be tuned by the user to measure emissions in the 47-1,000MHz
frequency range. Its factory default setting of around 800MHz enables operators to tune out non-PD emissions including non-destructive corona activity, and eliminate false readings from wireless sources such as TV masts and mobile phones. The oper- ator can safely listen to emissions on the built-in speaker and/or over headphones. Signals can also be viewed on the instrument’s menu driven screen, which displays them as magnitude, frequency and pulse timing. EA Technology
www.eatechnology.com T: 0151 347 2308
Enter 229 Protection from arc flash Enter 228
DEHN has recently added to its portfolio of personal protective equipment with the launch of the DEHNcare arc fault tested protective suit.
In addition to safety helmets and protective gloves, the suit con- stitutes the third important com- ponent for reducing the risk of arc flash injury whilst working on electrical installations. The two part protective suit protects work- ers from the thermal effects of an arc fault during work on electrical installations. To this end, the materials used provide maximum protection (IEC 61482-1-2, class 2). The suit, which is available in six sizes, uses breathable leather and neoprene materials in combi-
nation with flame retardant lining and reflective strips. The zip and hook and loop fasteners are also made of flame retardant material. DEHN
www.dehn.co.uk T: 01484 859 111
Enter 231 New options for lighting control
To help transfer heat away from tem- perature sensitive equipment, Rittal has introduced its compact thermoelectric cooler that utilises Peltier technology. With a width of 125mm, height of 400mm, depth of 155mm and a mass of 3kg, it is well suited to command panels - even those that are supported using arm systems. The unit can be mounted either externally or internally, the latter resulting in a depth of only 55mm out- side the enclosure. Peltier technology needs no refriger- ant or chilled water to function - an electrical power supply is all that is required to provide a nominal cooling output of 100W. With models that accept either an AC or a 24V DC supply,
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the former in a range between 100V and 230V, there is a Rittal thermoelectric product for most applications. The functionality of the thermoelectric unit extends beyond cooling. The units are capable of providing heating, should it be necessary, with a heat output of 100W. Multiple units may be connected together to provide nominally up to 500W of cooling and heating using a master/slave adaptor.
The unit is supplied complete with a USB cable and software so that the tem- peratures at which cooling and heating commence and those at which alarms are raised may be easily set. Rittal
www.rittal.co.uk T: 01709 704 000
Helvar has added to its DIGIDIM systems range with the launch of the new 445 Switch Interface Unit and two single channel relay units - the 492 and 493.
Enter 230
The DIGIDIM 445 is Helvar’s most compact interface for con- verting third party switches and buttons to be compatible with a Helvar lighting control system. The new unit provides four switch inputs and four LED
output drivers for indicator LEDs. The 492 relay unit (pictured) has been designed for controlling non-DALI, non-dimmable loads and can be installed within a luminaire, electrical cabinet or used as an inline unit. This com- pact unit forms a DALI relay node with a typical DALI current con- sumption of 2mA, and is pro- grammed using Helvar’s lighting control software.
The 493 signal relay unit is designed to allow simple control interfacing with third party equipment. The contact rating is up to 60V AC or V DC, at a maxi- mum of 0.5A. Helvar
www.helvar.com T: 01322 222 211
Enter 232 DECEMBER/JANUARY 2013 Electrical Engineering
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