EDITOR'S CHOICE PRODUCTS CONTROL THE COLOUR OF SMART BULBS
Customers can now control the colour-change and white-tuning features of their TP-Link smart bulbs, via the ‘TP-Link Kasa’ smart home skill for Amazon Alexa. With this updated skill, consumers can use simple voice commands via Amazon Alexa to change the colour of their LB130 smart bulbs and the white- tuning of both their LB120 and LB130 smart bulbs. The enhanced TP-Link Kasa smart home skill for Amazon
Alexa makes it easier than ever to select the perfect lighting for any mood or setting. Users can tell Alexa to make bedroom lights warmer in the evening to improve sleep, or ask Alexa for cool white light in the office, to help concentrate on work. It is also easier than ever to adjust brightness levels, change the temperature of white light or quickly flip the lights to the colours of your favourite sports team. In order to use Amazon Alexa voice control to change the
colour or temperature of TP-Link smart bulbs, consumers will first need to pair their TP- Link LB120 or TP-Link LB130 smart bulbs with Amazon Alexa. Once paired, the customer can enable this smart home skill, link accounts, discover devices and begin voice control.
TP-Link
uk.tp-link.com NEW WORK AND INSPECTION LAMPS
RS Components (RS) has added three new work and inspection lights from Ansmann to its maintenance portfolio. The lamps are suitable for industrial applications in fields such as automotive, transportation and site work. These professional lamps feature the latest LED technology and come with a built-in Li-ion battery pack. All units are robust, shockproof to a drop height of 1m, and have an IPX4-rated splash- proof housing and a rubberised grip. The WL2 unit is provided with a flexible range of fixing and
positioning options via its 340° rotatable handle, a 360° rotatable hook on the back of the housing, a hanging clip on the base, as well as a heavy-duty integrated magnet on its base for secure fixing. Offering a charging time of around 4.5 hours via its 3.7V/1550mAh battery pack with safety board and charging status LED, the unit delivers a brightness of 220 lumens at full power, and operating times of approximately 4.5 and 10 hours (from its two available respective power settings of 100 per cent and 50 per cent). The WL4 light features a 100-lumen 1.5W spotlight on top of the housing.
Positioning is provided by the base, which is 180° rotatable in eight steps with lockable lamp handle, as well as via two 360° rotatable hooks that ensure flexible hanging options, plus a trio of magnets that enable secure fixing. The 3.7V/2600mAh battery, with safety board and charge-status LEDs, enables a charging time of approximately four hours. The unit provides 385 lumens at full power, with operating times of approximately four hours for the main lamp and 11 hours for the spotlight.
RS Componenets
www.rsonline.co.uk
LOW-RESISTANCE OHMMETER IS VERSATILE, TOUGH AND EASY TO USE
The new DLRO10HDX digital low-resistance ohmmeter, which is the latest addition to Megger’s popular and successful DLRO10 range, offers increased versatility with no fewer than five test modes. It is easy to use, as all major functions are selected using rotary controls. In addition, the instrument has a rugged impact-resistant case that provides IP54 protection and IP65 protection when the lid is closed.
Other key benefits of the DLRO10HDX include an on-board
memory that holds up to 200 test results, the ability to operate from an internal rechargeable battery or mains power, and a choice of high and low power test modes. The instrument also has a high compliance voltage, which allows it to deliver 10A into test objects, with resistance up to 250mΩ, and 1A into test objects with resistance up to 2.5Ω. Test duration can be up to 60 seconds at full rated current. For safety and convenience, the DLRO10HDX incorporates
protection against accidental connection to live circuits up to 600V, without blowing a fuse. The instrument also has a live- circuit warning light and, with the optional terminal cover fitted, it is rated CAT III 300V in line with IEC 61010. Applications for the DLRO10HDX extend from measuring the
resistance of joints in busbar systems, to checking the electrical continuity of railway lines and verifying the integrity of welds in aircraft body components. The five operating modes of the DLRO10HDX have been carefully formulated to support this wide range of functionality. To complement its new DLRO10HDX digital low-resistance
ohmmeter, Megger offers a comprehensive selection of test leads up to 30m long with the option of standard or Kelvin- clamp connectors. The range also includes test leads with interchangeable terminations, which means that just one set of test leads can be used for a wide variety of applications.
Megger
www.megger.com
RACK-BASED COOLING WITH COOLING CAPACITY OF UP TO 32KW
Stulz UK has launched the CyberRack, a new chilled water rear heat exchanger, with cooling capacity from 19 to 32kW across the range. Its adapter frame ensures the system fits most 19- inch server cabinets. Stulz is expanding its product portfolio for rack-based cooling systems with the CyberRack Active Rear Door. The heat exchanger door replaces the back panel of the rack, and its compact design enables the cooling of all server cabinets, including high-density systems, directly inside the data centre. The space in the rack remains fully available for IT equipment. As the depth of the rack increases by less than 300mm, the door can also be retrofitted in existing installations – no repositioning of server racks is needed. Two versions of this product are available, with a cooling capacity of 19 or 32kW. Up to five EC fans ensure an optimum airflow. Thanks to its individual adapter frame, the
CyberRack can be installed in all commonly available 19-inch cabinets. The frame models are available in heights of 42U and 48U, and widths of 600mm and 800mm. The cooling capacity of the CyberRack is automatically adapted to the heat load of the servers. This is achieved either directly through continuous analysis of the measured temperatures, or indirectly via differential pressure control. In this instance, the speed of the CyberRack fans is adjusted in line with the airflow of the servers' own fans. By mounting the heat exchanger door
directly on the rack, the transfer of heat takes place inside the server cabinet – isolated from the ambient environment. This allows a considerably higher temperature on the air and chilled water side than in other room cooling systems, where the heat is first emitted into the room and then cooled. Most of the cooling can be delivered by means of free cooling.
Combined with a chiller such as the Stulz CyberCool 2, compressor cooling is only required to cover the peaks. This increases the efficiency of the cooling system and achieves a long-term reduction in operating costs. In addition to its use as a standalone solution, the CyberRack can also be used as an add-on for
air conditioning systems with raised floor.
Stulz
www.stulz.co.uk
ELECTRICAL ENGINEERING | JUNE 2017 33
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