How much is Electronics, encroaching on your normal work?. We now have High Frequency Ballasts, Soft-Starters, Electronic Y-D Starters and Micro- Drive Motor controllers. How do you feel about these new technologies?.
As an inspection engineer the widespread use of electronic equipment in buildings has certainly moulded the way I carry out even the most simple testing procedures. For example, insulation resistance tests on existing installations are almost impossible. Not only could electronic equipment be damaged by the test voltage but most switch mode power supply units will have filtering equipment connected to earth. The harmonics produced by such equipment will also affect the way I might determine appropriately sized neutrals in 3phase and neutral systems. Careful consideration also needs to be given to high protective conductor currents which are a direct result of the normal function of certain electronic equipment in buildings. The enormous changes brought about by electronic advances in the electro-technical sector is what makes this industry dynamic, exiting and, of course, well worth while being part of!
Re: Electronics?#134986 12/16/0212:10 AM12/16/0212:10 AM
Lyle, Welcome to ECN, nice to have someone from Ireland in the ECN group. I certainly agree with your comments on Electronics, making Insulation Resistance testing more difficult, even a simple light dimmer in a house, can add an extra 10 minutes,to a job, through having to bridge it out. Another thing that concerns me about using Electronics, is that it requires extra protection against voltage variations and spikes, whereas standard electrical gear does not require this.
I have concerns, about Designers of Electrical installations, especially as far as Industrial Controls go. Recently, I was asked to install an automatic inking system at the local meat works, for all of their Inedible waste. I figured that it could all have been done with 2 timers and a Contactor, but no, what turns up, from this guy is a PLC, a multitude of sensors, limit switches and a whole host of Em/Stop stations. It's OK, if you don't have to install all of this, but the real crunch came when the PLC was faulty, and then later on the program had a few "glitches" in it. All I thought, was why put our client through all of this, it took ages to fix it all up, WHY!. 2 timers and a Contactor.