EV charging equipment in the event of certain faults relies on automatic supply disconnection to protect the user and other members of the public. To reduce the ?chances of receiving a fatal shock, RCDs must operate before the residual current reaches a dangerous level and within the defined disconnection time. Understanding the basic operating principles of RCD’s helps with regard to the specification of the correct type of RCD, based on the characteristics of the EV charger connected to the charge point

The regulations place the responsibility on the specifier / designer to verify the dc residual current content when selecting RCDs, and EVCPs may contain as a minimum requirement Type A RCD’s – Reg. 722.531.2.101, provided it can be determined that the smooth dc residual current does not exceed 6mA.  Some charger will not work with Type A RCDs.

Paul Reeve, director of business services at the Electrical Contractors’ Association (ECA) discusses the proposed changes to the Construction and Design Management (CDM) Regulations

Considering the human, financial and reputational costs of accidents and ill-health, it’s important health and safety regulations are fit for purpose, and easy to understand. Construction, of course, has its own set of health and safety regulations that actually aim to show what a well-managed project looks like, and they are up for review.

When it comes to the electrical safety of machinery there is a significant lack of knowledge as to which standard should be applied. In many cases electricians responsible for maintaining machinery on site are being trained to the British standard BS 7671 – ‘Requirements for Electrical Installations’. However, this standard is only applicable in the UK and applies to low voltage electrical installations. It covers general wiring of buildings, but largely excludes machinery.

Insulation testing techniques that use dc applied voltages are relatively well known, but those that use ac are rather less familiar, even though ac testing is often preferred for critical or costly assets. Tony Wills of Megger dispels this unfamiliarity by explaining how ac testing works and what it can do.

Electrical Review and Wieland Electric recently joined forces to deliver a webinar on the essential health and safety requirements for designing and using machinery. Here, we provide an overview of the presentation and the key points that were raised.

Irrespective of one’s political preferences, we have to recognise UK government is working hard to bring manufacturing back to the UK. Similarly, the UK’s shortage of engineers is disappointing, but there is a clear strategy to improve. The recent Perkins Review called on parents, teachers, employers and government to unite and inspire young people to delve into the wide world of engineering. Graham Mackrell of Harmonic Drive UK explains.

Ian Hodkinson, business development manager for ABB’s Distribution Automation Business in the UK, explains how state of the art fibre optic sensors can help, protect operating personnel and essential switchgear against arc flash hazards and details some practical applications

'Integrated industry’ is not just a slogan, but rather a sustainable strategy for industrial enterprises. The concepts embodied in integrated industry mean that production can be structured more flexibly and more rapidly, while companies are able to act in an environmentally compatible and resource-efficient manner to meet customer requirements in an optimal way. Kevin Canham, of Harting, explains

Steve Gallon, UK managing director of Fibox, gives his views on the aspect of ‘price vs quality’

These days, more than ever, price is important, but so is quality.

Big Data, as its name suggests, concerns large volumes of complex data that if correctly processed can be a powerful tool for many enterprises. However, providing the processing capacity required can call for tens, hundreds or even thousands of servers. This impacts data centre operators who must provide UPS protection of sufficient capacity and flexibility for these new challenges. In this article, Kenny Green, technical support manager at Uninterruptible Power Supplies, a Kohler company, looks at how modern modular UPS systems can help operators meet the challenges of ‘Big Data’

In mission critical industries such as pharmaceuticals or paper and pulp, a motor malfunction can translate to millions in lost profit. Looking after the bearings in your motor by improving power quality increases its lifespan and reduces maintenance related downtime explains Steve Hughes of REO UK

Even though IPx9 has now been recognised by the British Standard BS EN IEC 60529, this is no guarantee against water ingress over the long term life of the equipment argues Ian Gibson, technical director for Flexicon

Big Data, as its name suggests, concerns large volumes of complex data that if correctly processed can be a powerful tool for many enterprises. However, providing the processing capacity required can call for tens, hundreds or even thousands of servers. This impacts data centre operators who must provide UPS protection of sufficient capacity and flexibility for these new challenges.

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