With trace heating, electric elements, controlled
by a thermostat, run along pipework to ensure a desired temperature is maintained. This is used to prevent frozen water pipes during cold months. While essential to large-scale municipal and commercial buildings, that could take up to 20km or more of trace heating cable, the technology is also vital to other applications, and to maintain much higher temperatures. For example, to ensure the fluidity of bitumen for the aggregate industry, trace heating maintains pipes and tanks at 160˚C; and when industrial chemicals are involved, temperatures can reach into several hundred degrees centigrade. Cross Electrical (Nottingham) has designed
and installed trace heating systems, as well as thermal insulation, since 1971. Applications range from supplying Formula One racing teams to frost protecting grape vines at vineyards. The thermostat that controls trace heating
temperature is essential. Installed both indoors and outside, and often within industrial environments, thermostats have to be well protected, so enclosures play a vital protective role. But, the housings have to be flexible enough to allow fast and easy installation of the
thermostat device and its connections. The company had to drill and tap every
enclosure it was using to create cable entry and exit points, a time-consuming process. So, as an alternative, Spelsberg provided enclosures with knock outs that canbequickly removedtocreatethe entry and exit points. These feature a selection of knock-out points in 20mm or 25mm diameters that can be fitted with cable glands to meet the required ingress protection. Previously, careful drilling to maintain IP rating was necessary. The Spelsberg enclosure achieves IP66, making
it suitable for indoor and outdoor use against virtually all conditions. Polycarbonate construction also means that it is highly durable and able to withstand impact, while ensuring light weight for ease of installation. Cross Electrical’s XSP thermostat unit
comprises a mechanical, pressure-controlled thermostat device that can manage bands of temperature ranging from 0˚C-300˚C for pipe sensing, or 0˚C-40˚C air sensing. With a power supply entering the enclosure and two heating connections exiting, temperature setting is controlled by a dial, and status lights confirm heating on/off and system health. These internals are protected by a clear enclosure
cover that allows facility managers to check settings while preventing tampering. As the thermostats are typically required to maintain a set temperature, adjustment isn’t usually necessary, and Cross Electrical’s devices are designed to be maintenance free. Spelsberg also supplies enclosures with
Cross Electrical’s branding printed directly onto the housing. Paul Dable, director, Cross Electrical (Nottingham), said: “Working with Spelsberg, stock is always provided on time. Support is always very good too, and Spelsberg’s engineers can always help us whenever we need it. Every enclosure they’ve provided has always achieved exactly what Spelsberg said it would do.”
IP54 sealed for general purpose indoor use, the
ABS material gives a lower price point than the polycarbonate used in the 1557, which is designed for installation outdoors and in aggressive environments. Self-tapping screws secure the lid to the base, making it ideal for applications where repeated access is not required. There are multiple PCB mounting standoffs in both the lid and the base. There are four square sizes from 80mm x 80mm to 200mm x 200mm in the
range; and three rectangular ones from 120mm x 80mm to 200mm x 160mm. All sizes are available in black, RAL 7035 grey and white, and are available in two heights: 45mm and 60mm for the smallest size, and 45mm and 70mm for the larger ones. The 1556 is an ideal desktop enclosure when fitted with the supplied feet, or it can be wall-mounted with either four visible mounts or two hidden mounts, which are available as optional accessories. Also available as an option are 2mm thick aluminium internal panels.
1556 FR ABS IP54 enclosures
Learn more:
hammfg.com/1556 Contact us to request a free evaluation sample.
uksales@hammfg.com • 01256 812812
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