IN FOCUS
New Modular Contactors added to Elucian consumer unit range
S
colmore continues to expand its Elucian consumer unit range to provide electricians
with the broadest possible range of units and protectives devices to cater for all installation requirements. New to Elucian is a range of 2 Pole (20A) or 4 Pole (25A, 40A and 63A) Modular Contactors in a variety of Normally Open or Normally Closed contact configurations compatible with the Elucian range of Consumer Units. A contactor is an electrically controlled switch similar to a relay – essentially low voltage circuit component used for switching a higher-current electrical power circuit (more than 15 amps or a few kw). It can be connected directly to devices with a high load, as it has rapid open and closing features designed to control and suppress the electrical arc discharged when a heavy motor current is interrupted. It is not, however, designed as a circuit breaker to interrupt a short circuit current. A contactor is made up of three components: the enclosure, the electromagnet or coil, and the contacts / number of poles. The electromagnet or coil provides the driving force which closes the contacts, and consists of a static core and a moving core. The contacts are the current-carrying components and can include power and auxiliary contacts and contact springs. When a current is passed through the coil, it produces a magnetic field that attracts the contactor’s
moving core. This moving core propels the moving contact by electromagnetic force towards the fixed contacts and holds them closed together. When power to the coil is turned off, the moving core is returned to its initial position, either by a contact spring or by gravity, and the contacts reopen. A normally open (NO) contact pair is open (in a non-conductive state) when it, or the device operating it, is in a de-energised or relaxed state. A normally closed (NC) contact pair is closed (in a conductive state) when it, or the device operating it, is in a de-energised or relaxed state. The new Elucian 2 Pole 20A Modular Contactors are 18mm width and will take up 1 space / way
inside a consumer unit. The Elucian 4 Pole 25A Modular Contactors are 36mm width and will take up 2 spaces / ways inside a consumer unit. The Elucian 4 Pole 40A and 63A Modular Contactors are 54mm width and will take up 3 spaces / ways inside a consumer unit. An updated Elucian brochure has been produced and will showcase all the latest additions to the range. It can be downloaded below.
www.scolmore.com/products/elucian
Flow into control from the Energy Centre to Terminal Units
Advertorial
Getting the most out of smart HVAC solutions comes down to getting the system design right.
At Frese, we can help you control flow & temperature from the Energy Centre all the way to Terminal Units.
Take control at
Frese.eu
Toshiba’s New Generation R-32 VRF System Helps Decarbonise Commercial Buildings and Reduce Running Costs
L
EATHERHEAD, England, 26 July 2022 – Launched today, the latest generation of Toshiba’s flagship Variable Refrigerant Flow (VRF) system, SHRM Advance, operates on lower Global Warming Potential (GWP) R-32 refrigerant. The combination of R-32’s lower GWP and reduced refrigerant
charge enables SHRM Advance to deliver a significant reduction of up to 80%* in equivalent carbon emissions. Toshiba Carrier UK Ltd (TCUK) is a joint venture between Toshiba Carrier Corporation and Carrier, which is part of Carrier Global Corporation (NYSE: CARR), the leading global provider of healthy, safe, sustainable and intelligent building and cold chain solutions. This all-new VRF system gives end-users an ultra-efficient, high-quality cooling and heating solution, enabling office buildings, large shops and restaurants, healthcare facilities, and educational establishments to achieve best-in-class sustainability credentials, while reducing running costs. “With the race to achieve net-zero, building owners and operators are under increasing pressure
to minimise their carbon footprint,” said David McSherry, Head of Toshiba DX, Residential and Light Commercial, TCUK. “In addition to the significant sustainability benefits, as the price of R-410A – the refrigerant used in VRF systems to date – rises and availability falls, R-32 offers a very attractive optimum alternative, with significantly lower GWP, reduced costs and improved energy efficiency. SHRM Advance represents a win-win for customers and the environment.” The new VRF system incorporates technical innovations that help enhance comfort performance and
energy efficiency. These include the ability to select either three-pipe heat recovery or two-pipe heat pump operation, a new twin-rotary compressor with liquid injection, split heat exchanger, sub-cooling plate heat exchanger, a new high performance fan motor, and a unique thermodynamic circuit, all contributing to class-leading efficiency of SEER up to 8.9 and SCOP up to 4.67. For system designers, a new generation of innovative flow selectors with up to 12 ports gives enhanced flexibility and optimises the ability of SHRM Advance to deliver simultaneous cooling and heating. This is controlled automatically, enabling seamless energy transfers between areas of the building requiring heating and cooling, ensuring a comfortable and productive indoor environment at all times, whatever the weather outside. An advanced heat recovery function provides heat to the indoor unit with minimal input from the condensing unit, further improving energy efficiency and helping to minimise carbon footprint. If required, SHRM Advance can also be customised to operate as a two-pipe heat pump system. For installers, the fully packaged SHRM Advance is available in 8 to 24HP capacity units, giving flexibility to meet the needs of any commercial building project. A new compact chassis height of just 1.69m helps integration on site, while it is possible to connect up to 69 indoor units per system. A full range of 13 different types of indoor unit are available, from 0.3 to 10HP capacity. As well as conventional indoor units, SHRM Advance is available with a fresh air ventilation duct
and a medium temperature water module. Supported by a 70-200% diversity ratio, full system customisation is possible to overcome site-specific project constraints. For applications requiring enhanced levels of indoor air quality, Toshiba’s one-way and four-way cassettes offer plasma/ionizer air purification, while the high-wall unit has an ultra-pure filter.
Safe operation is a key design priority and is ensured by an advanced integrated leak detection
and shut-off valve system. To ensure regulatory compliance at the design stage, equipment selection software takes account of mandatory requirements, based on floor area and refrigerant quantity. For each proposed project design, it gives installers and consultants full guidance to ensure regulatory compliance and ensure total peace-of-mind. Control is enhanced by Toshiba’s TU2C-LINK communication system, giving improved speed and connectivity. A full line-up of wired and central remote controllers is available, offering full compatibility with the new R-32 safety devices. Monitoring solutions include the Wave Tool Advance (available from App store and Google Play) and Link Adaptor, enabling quick and easy servicing. “The world is heading toward a decarbonized future. SHRM Advance enables commercial building
owners, consultants and installers to contribute to the decarbonisation effort,” added David McSherry. “For both new-build and replacement projects, the system is a major step toward net-zero, and it is available now.” *Compared with similarly sized R-410A systems. The precise percentage will depend on the system design for each installation.
www.toshiba-aircon.co.uk Read the latest at:
www.bsee.co.uk BUILDING SERVICES & ENVIRONMENTAL ENGINEER SEPTEMBER 2022 37
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50
