A bad choice could cost thousands
October 2008
Enclosures, Cabling & Connectors
When hot weather causes the electronics inside a control panel to fail, there is a panic to get the machinery up and running again. The operator might choose to simply open the panel door and aim a fan at the circuit boards. In reality, the fan ends up blowing a lot of hot, humid, dirty air at the electronics where the cooling effect is minimal. If the machinery starts functioning again, the likelihood of repeated failure is great since the environment is still hot and threatens permanent damage to the electronic components and circuit boards. Worse yet, that the open panel door is an OSHA violation that presents hazard to personnel.
A sensible solution
Exair has a complete line of low cost panel coolers that can solve these problems. They mount in minutes through an ordinary electrical knockout and have no moving parts to wear out. Thermostat control which minimises compressed air use is available for all models. All the panel coolers are UL listed to US and Canadian safety standards. Constructed of stainless steel they are robust and assure long life and maintenance free operation.
Exair manufactures special NEMA 4, 4X and 12 Panel Coolers suited to specific requirements. The High Temperature Panel Coolers which are used for ambient of 52 to 93°C are available. Internal components can withstand high temperatures like those near furnaces and ovens etc.
The non-hazardous purge panel cooler systems are suitable for dirty areas where contaminants might normally pass through small holes or conduits. Under normal conditions, the NHP Panel Cooler Systems provide a slightly positive pressure in the enclosure by passing 28 litres of air per minute through the cooler. When the thermostat detects high temperature, it energises the solenoid valve to pass full line pressure to the panel cooler, giving it full cooling capacity.
In panels where the heat load is extremely high, panel coolers of up to 820 W (2800 BTU/hr) are suitable. Stainless Steel NEMA 4X Panel Coolers are suitable for the food service, pharmaceutical, harsh and corrosive environments, and other applications where 316SS is required or preferred. Capabilities of these are 190 to 820 W (650 to 2800 BTU/hr).
Environmental considerations
NEMA 12 (IP52) Panel Coolers (dust-tight, oil-tight) are suitable for general industrial environments where no liquids or corrosives are present.
NEMA 4 (IP56) Panel Coolers (dust-tight, oil-tight, splash-resistant, indoor/outdoor service) incorporate a low-pressure relief valve for both vortex tube and panel air exhaust. This valve closes and seals when the cooler is not operating, to maintain the integrity of a NEMA 4 enclosure.
NEMA 4X (IP56) Panel Coolers offer the same protection as NEMA 4 but are constructed of stainless steel for food service or corrosive environments.
Further reading:
Seamless connectivity and interoperability of soldiers’ digital equipment
Enclosures, Cabling & Connectors
Fischer Connectors’ Swiss-engineered MIL-SPEC solution features an expanded portfolio of cables and connectors offering a competitive solution in line with the US Army’s Next Generation Hub (NGH) specifications.
Read more...
Cable solution simplifies connectivity
SEW-EURODRIVE
Enclosures, Cabling & Connectors
Cabling can be one of the most challenging aspects of automation and drive system installations, often leading to delays, faults and inefficiencies. SEW-EURODRIVE offers a solution that simplifies connectivity, its innovative Digital Data Interface technology combined with a single cable system.
Read more...
The use of stainless steel cable glands in the food industry
Enclosures, Cabling & Connectors
In the food industry, hygiene, durability, and compliance with stringent safety standards are paramount. Stainless steel cable glands from Pratley offer an ideal solution for food industry professionals who require robust, corrosion-resistant and reliable products.
Read more...
Rittal launches new flat pack IT enclosure solution
Enclosures, Cabling & Connectors
Rittal South Africa, the supplier of IT infrastructure solutions and industrial enclosures, has announced the local launch of the FR IT Rack – a flat-pack IT enclosure solution.
Read more...
Building the control panels of the future
Omron Electronics
Enclosures, Cabling & Connectors
The industrial automation world is built on robust and efficient control panels. These control panels are designed precisely and assembled, managing machines, processes and equipment across different industries. Omron assists panel builders in navigating complex challenges that could impact project efficiency and profitability.
Read more...
Epiroc’s new trailing cable repair solutions
Enclosures, Cabling & Connectors
In a significant step towards supporting southern Africa’s mining and industrial sectors, Epiroc has introduced its trailing cable service, focused on providing top-quality cable repairs that meet both South African and Australian specifications.
Read more...
Robust power and control cable
LAPP Southern Africa
Enclosures, Cabling & Connectors
The ÖLFLEX POWER RV-K Eca by LAPP is a robust power and control cable designed for fixed installations under medium mechanical loads.
Read more...
Connectivity cables
Enclosures, Cabling & Connectors
Balluff connectivity cables ensure reliable, high-performance connections for industrial automation. Designed for harsh environments, they offer robust shielding, oil resistance and high flexibility for long-lasting durability.
Read more...
Online drive cable finder
Enclosures, Cabling & Connectors
Motion plastics specialist, igus has released the latest version of its readycable finder, an online tool that makes it easier to select suitable drive cables.
Read more...
Cables and wires for food and beverage
LAPP Southern Africa
Enclosures, Cabling & Connectors
The strict hygiene regulations for handling foodstuffs stipulate particularly complex requirements for electrical components. The cables and accessories used must withstand a wide range of chemical, thermal and mechanical loads, and also function perfectly at all times in refrigerated and damp rooms.
Read more...
printer friendly version