Corrosion-resistant flameproof junction box
28 June 2023
Enclosures, Racks, Cabinets & Panel Products
Pratley has developed and launched a ground-breaking new product, the Flameproof Ex d Envirobox, a polymeric, corrosion-resistant, direct-entry, flameproof junction box.
Its recent launch signals a milestone in the electrical industry and has been confirmed by Pratley electrical research & development manager Sven Breedt as: “A new product unlike any other in the world and one of Pratley’s most innovative electrical inventions.”
Flameproof equipment is designed to prevent internal ignition within a flammable atmosphere from transmitting outside the protective enclosure. Currently, all traditional direct-entry flameproof junction boxes made from steel, cast iron or aluminium materials can be prone to corrosion over time and when used in very harsh environments. Special attention needs to be given not just to the overall climatic conditions of the area where the enclosures are installed, but also to the material and design of the equipment.
Pratley’s new Flameproof Ex d Envirobox junction box, made from a specially formulated, robust engineering polymer, is designed to withstand severe environmental conditions. This makes it ideal for use in areas with a high risk of corrosion, such as offshore oil platforms, underground mines, and petrochemical plants.
The polymer used in the manufacture is unique to Pratley. The material has exceptional mechanical properties such as strength, stiffness, creep, and dimensional stability. This ensures that the Flameproof Ex d Envirobox can withstand 2x 20-joule impact tests in a -40°C environment, and has been third-party tested to 4000 kPa internal pressure. Additionally, it is IP66/68 certified for continuous underwater depths of up to 300 m, making it water, dust, and gastight.
The lid and base have an accurately machined flame path and the engineering polymer of the Envirobox ensures that the flame path is completely corrosion resistant. The machined surface flame path renders the junction box safe, easy to use and maintenance-friendly in surface and underground mining applications. The lid is fastened down with eight stainless steel Allen head screws, contributing to the corrosion resistance of the junction box, and it has Pratley’s signature red Ex identification band for quick Ex equipment identification.
The Flameproof Ex d Envirobox is fully certified to SANS, EN and IECEx standards for use on surface and underground mining applications (Ex db I/IIB+H2 T6..T5 Mb Gb, Ex tb IIIC T85..T100 Db) in Zone 1, 2, 21 and 22 and an ambient temperature range of -40 to 55°C.
Further reading:
Self-contained micro data centre
Enclosures, Racks, Cabinets & Panel Products
Vertiv has announced the local availability in Africa of the Vertiv SmartCabinet 2, a self-contained micro data centre for edge computing applications.
Read more...
Robust case for sensitive electronics
Actum Electronics
Enclosures, Racks, Cabinets & Panel Products
nVent Electric plc announced a new addition to its SCHROFF portfolio of products: a robust case family designed especially for protecting sensitive electronics in harsh environmental conditions.
Read more...
Electronic enclosures customisation
Communica
Enclosures, Racks, Cabinets & Panel Products
Modifying an enclosure in-house can be tedious and difficult to achieve, and detracts from the main core of your business, which is why Hammond offers the service.
Read more...
ETA powder-coating process
Elen Enclosures
Enclosures, Racks, Cabinets & Panel Products
The E DUP (double layer protection) treatment includes a first layer of paint using cathode electrophoresis with epoxy resin, and a topcoat of epoxy-polyester thermosetting powder.
Read more...
Corrosion-resistant GRP enclosures
Electrocomp
Enclosures, Racks, Cabinets & Panel Products
The design offers better impact resistance, and all sizes have the additional feature of shelves moulded into the base, fitted with threaded inserts to house a PCB or other electrical equipment.
Read more...
IP68 miniature enclosures
Electrocomp
Enclosures, Racks, Cabinets & Panel Products
All enclosures in the range are fitted with PCB stand-offs in the base, and the preformed silicone sealing gasket provides excellent protection against the ingress of dust or water,offering a watertight seal to protect the housed electronics.
Read more...
Hammond announces new flame-retardant ABS 1556 family
Electrocomp
Editor's Choice Enclosures, Racks, Cabinets & Panel Products
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.
Read more...
Flight-grade multi-port circular connector
Hiconnex
Enclosures, Racks, Cabinets & Panel Products
The Glenair Series 23 SuperNine connectors are a high-altitude, mission-critical coaxial connector series for RF, microwave and mmWave applications.
Read more...
UV-resistant enclosures
Communica
Enclosures, Racks, Cabinets & Panel Products
Hammond Manufacturing has a range of glass-reinforced polyester (GRP) enclosures which are lightweight, corrosion resistant, and also UV-resistant.
Read more...
Dual compartment enclosures
Sivan Electronic Supplies
Enclosures, Racks, Cabinets & Panel Products
The Gainta range of dual-compartment enclosures combine two compartments: an area that is sealed, and an area with a hinged clear lid.
Read more...