Recent content by EEIre

For a free resources the "Electrical Installation Guide" by Schneider is quite good and can be downloaded from their website "Network Protection and Automation Guide" by Alstom "Industrical Power Engineering and Applications Handbook" by Newnes is a good book and is worth buying

Preaction double knock system is the normal solution here. This keeps the spinkler pipework empty unless the fire alarm opens a pre-action valve in the case of fire. Also allows you to design in electrical interlocks etc

I have found information on the following systems online: http://www.cbsarcsafe.com/ http://www.safe-t-rack.com/...

Thanks for the replies guys: Scotty: Did you purchase the kit from a third party or did you get the remote racking functionality built into the switchgear?

Hi, Does anyone have experience of using remote racking of either 400V or 10kV switchgear in an IEC/EN country? Thanks, Sean

Pretty good guidance can be found here: http://www.esb.ie/esbnetworks/en/downloads/electric_magnetic_fields_in_environment.pdf

I've had good experience with Omicron

I've just finished a major substation project with Areva and they used Siemens PLCs. Like Scotty above I did not even know that Areva had DCS technology.

Best thing to do is talk to your lead engineer and get his advice.

See the following example from a vendor's website: http://www.mygenerac.com/PublicPDFs/0172610SBY.pdf Check CAT as well and you should figure it out. Most important thing is to consider motor starting.

See IEC60079-14 Electrical apparatus for explosive gas atmospheres — Part 14: Electrical installations in hazardous areas (other than mines) Section 9 Wiring systems Usually the cables are not certified for hazardous areas, it is up to the designer to select cables that comply with the...

Subject is more complex than it seems. Recommend reading IEEE Orange Book: Std 446 IEEE Recommended Practice for Emergency and Standby Power Systems for Industrial and Commercial Applications

As well as impacting on flame paths painting an ex-motor may impact the temperature classification of the motor.

Blue is a standard colour for IS cables and blue if often used for colour coding intrinsically safe items. It is common to see a variety of different colours for Ex motors - From memory I can think of examples of green, grey, orange and blue. ABB's standard colour is blue...

This is not a requirement of EN60079-0