Protecting high voltage machines operating in potentially explosive atmospheres
Purge Systems
Protecting high voltage machines operating in potentially explosive atmospheres
Purge and pressurizing is an industry accepted solution for HV machines that operate in potentially explosive atmospheres and is particularly suitable for larger equipment where other standard forms of protection; such as flameproof enclosures are unsuitable. [more]
Today’s standards and certification requirements are stringent, developing significantly over the past 30 years to achieve higher levels of safety; designed to limit and control ignition risk presented by electrical apparatus in hazardous areas, with potential sources of ignition including; high surface temperatures, sparking and static. As leading rotating machine specialists with OEM expertise, the QuartzPurge systems have been developed to take account of this.
We have over 80 years of first-hand knowledge in both designing and manufacturing both high voltage motors and high voltage generators for operation in hazardous area environments and over 35 years of being at the forefront in developing a modern and appropriate, technically sound purge and pressurisation system to meet the tightening restrictions of the world’s certification stage.
Our systems have been supplied as new to all major OEM’s as well as retro-fitted to machines in operation across the globe; both offshore and onshore, from the UK oil rigs to the oil, gas and petro-chemical facilities in the Middle East and Asia.
Installing a QuartzPurge purge and pressurising system on your HV electric motor brings with it a high level of confidence knowing that your asset will be more than adequately protected during operation in a hazardous environment.
There are many challenges when it comes to purging and pressurising an HV machine in terms of the typical construction.
When considering the design and development of suitable purge systems, the inherent machine constructions needed to be considered along with the over-riding requirement for the most cost effective solutions in terms of procurement and operation to be considered.
The QuartzPurge systems are designed to offer:
Our ATEX certified systems are available for fitment on newly manufactured machines, as replacement systems for pre-ATEX devices or indeed retro-fitted on machines that have been re-classified in terms of zoning. We are equally comfortable offering a replacement and upgrade of purge and pressurisation systems of other OEM manufacture. Be assured that we are on-hand to support with full installation and commissioning as well as ongoing maintenance, repair and spares provision for both the QuartzPurge systems and the associated HV motor as required.
Commissioning of the QuartzPurge systems should be carried out in accordance with the requirements of both the purge and pressurisation system and the machine by an approved person. A full range of commissioning tools required will be supplied.
Care must be exercised to ensure that commissioning is carried out in a safe manner and starting a machine should not occur until the system has been proved.
Parent company, Quartzelec is able to provide full commissioning support ensuring; initial settings are made, confirming operation is satisfactory, full system functionality, trouble shooting and system adjustments, leakage variation as well as interfacing to machine control is sound.
In accordance with ATEX requirements, inspection of the installed purge system must be carried out every three years as a minimum. Spares are available and include;
All maintenance should be carried out in-line with instruction manual written to EN60079-17, by a competent person. Any repairs must be carried out in line with EN60079-19 with only genuine replacement parts used.
We recommend that consideration is given to replacing existing pre-ATEX control systems with modern day, ATEX approved equipment, rather than looking to replace single element components due to aging.
When any replacement components are fitted, the QuartzPurge systems must be fully re-commissioned in order to confirm performance meets specified application requirements.