Distribution board helps keep divers' pressure stable

AK Air condensation-free IP65-rated distribution boards from Spelsberg have proven themselves on one of the world's most demanding applications, decompression chambers for deep sea divers.

The Bends, or decompression sickness, is one of the greatest fears for all divers. If they rise from great depths too quickly, the decompressing of their bodies as the water pressure reduces can cause gas bubbles to form in their bodies, blocking blood flow and causing cellular damage.

To prevent this, professional divers often prefer to decompress slowly in pressurised chambers. In fact, some divers are so busy that they live in the pressure chamber every day while they are on shift: eating, sleeping and relaxing between dives, rather than risk compressing and decompressing every time.

In essence, there are two type of decompression chambers: those integrated into the design of a divers' support ship as it is built, and "˜modular' systems, which are designed to be deck-deployed on existing work vessels and can be quickly removed and re-installed on other vessels. The latter are typically 9-12 man systems and fitted with a diving bell which is used to lower the divers to their working depths.

Naturally, the engineering systems that support the decompression chambers have to be completely reliable because lives are at stake. So, when it comes to the electrical systems, only the best equipment will do.

However, there is a something of a dilemma to overcome. Electrical systems need to be kept dry; in a marine environment this is naturally very difficult. Items like distribution boards need to be sealed to IP65, or another similar standard. Of course, electrical equipment warms up when it is in use and cools down when it is not, so inside a sealed box the air pressure will raise and lower, causing moisture to precipitate out onto the colder surfaces.

Spelsberg overcame this problem with the introduction of the AK Air distribution boards range, which is fitted with special air vents to maintain equal internal and external pressures. The units have proven themselves many times in demanding applications in industry and agriculture, indoors and outdoors, in hot climates and cold.

The sea is one of the most hostile environments in which man works, yet the AK Air distribution boards reliably protect the lives of the brave men and women in the saturation chambers.

Lives on the line

Chris Lloyd MD of Spelsberg UK says: "You have to admire the divers who put their lives on the line every time they go to work. Supplying electrical equipment for their critically important decompression chambers is a very responsible undertaking, but it is also a privilege."

The AK distribution box design is certified to EN 60670-24. EN 60670-24, which is also known as VDE 0606-24, and establishes special requirements for acceptance of protective devices and similar energy-consuming devices for fixed local electrical installations. The AK Air is for installations with a measured voltage up to 400V and feed current of up to and including 125A.

It has a number of design features that make it easy to install and operate. For instance, there are a number of flange options including smooth and knock-out versions to enable variable cable entry configurations, while the hinged front window has ergonomically shaped grips for simple opening and replacement of door end stops. The internal mounting rail is height-adjustable, allowing easy accommodation of different sized electrical components. It can be used with M50 combination connectors or Schuko sockets, and its three-point- and exterior installation options allow a number of different mounting options.

More information on the AK Air condensation-free IP65-rated distribution boards can be found at www.spelsberg.co.uk.

Spelsberg Els UK Ltd

Unit 1B Queensway Business Park
Hadley Park West

+44 (0)1952 605849



More applications
53 minutes ago
Harwin and MSA Components sign German distribution deal
Harwin is bringing greater strength to its German supply chain through a new strategic partnership with MSA Components. The agreement allows MSA to offer all the latest products from Harwin’s extensive portfolio.
2 hours ago
Siemens selected by Microsoft for RAMP Programme
Siemens Digital Industries Software has been selected to participate in the Rapid Assured Microelectronics Prototypes (RAMP) Phase II initiative.
2 hours ago
Kontron receives VDC Research’s Gold Award for vendor satisfaction
Kontron has been recognised for outstanding customer satisfaction. The company has received the Gold Vendor Satisfaction Award for IoT and Embedded Hardware technology from VDC Research.
5 hours ago
Mouser wins Vishay Distributor of the Year Award
Mouser Electronics has received the 2021 High Service Distributor of the Year award from Vishay Intertechnology, one of the world’s largest manufacturers of discrete semiconductors and passive electronic components.
23 hours ago
What changes does the new machinery regulation bring?
As the machinery regulation replaces machinery directive 2006/42/EC, Dirk Meyer, specialist engineer solution architect at Eaton, looks at what is changing.
1 day ago
Klüber Lubrication receives Schaeffler Supplier Award 2022
Schaeffler has awarded Klüber Lubrication with the Supplier Award 2022 in the field of quality. The jury emphasised in particular the global supplier's strong commitment to the compliance with quality standards.
1 day ago
Essentra Components cuts energy usage by 15% globally
An innovative energy reduction initiative based on the concept of insulated jackets is helping industrial components manufacturer Essentra Components cut its energy usage when heating machine barrels by 15% and save CO2 emissions in the process.
2 days ago
Fluke addresses requirements to improve operational efficiencies
Rising energy costs and more stringent legislation guiding sustainable practices is spurring companies to re-evaluate processes and seek new tools and technologies to reduce waste and overcome challenges in today’s industrial environments.
4 days ago
7th axis robot in a welding application
An Igus 7th axis on a collaborative robot working alongside staff at German screening machine manufacturer Rhewum is helping to increase the workspace from 1300 to 5500mm.
5 days ago
Robust inductives position automotive workplace carriers on conveyor
An automotive manufacturer is relying extensively on the reliability of Contrinex’s robust and high-performance inductive sensors in the automated assembly of engines, where cylinder heads are transferred for mounting on the engine.

Login / Sign up