The Must-Know Electrical Troubleshooting Techniques for All Electricians Being an electrician, you know that sooner or later you will be dealing with a wide variety of complicated electrical drives and circuits which will break down and deteriorate when they age. In time, you will turn to be a master in the repair of the mentioned devices. But while you are yet approaching for that time, it is recommended that you learn first the basic troubleshooting tips and techniques for such problems. Kindly read on to get started. Nowadays, the solid-state electronic AC motor drive has become really common inside industrial plants. It can control a wide array of electrical devices like mixers, pumps, machine tools, conveyors, chillers and also air handlers. Even more, it has the capability to controlling a large set of other electrical devices that were originally powered by DC or designed to run in a constant speed. Since the damages of such electrical devices are usually due to the rectifier section, it would help much to have knowledge on insulated gate bipolar transistors, silicone controlled rectifiers, diodes and transistators. Talking of AC drives, the most popular used are the pulse width modulated inverter drives. What it does is convert the AC line voltage into a DC inside the converter section and then reconstruct it to be a variable voltage output again. The motor speed is most of the times dependant on the changing of frequency. The motor torque is then maintained by keeping into constant ration the volts-to-frequency.
Getting Down To Basics with Repairs
Now, what do you need to do in order to fix a problematic motor drive? Most of the times, problem like this is not so hard to repair because most problems are within the power sections and not in the circuit boards. The ordinary plant maintenance technician will not so much be exposed to drive failures which is why mastering in repairing circuit boards may not be easy to attain. It takes a methodical approach to be able to effectively troubleshoot a variable frequency drive. If you know that you only possess limited knowledge about the device, then you put into use the method taught in many technical schools – divide-and-conquer.
Getting Down To Basics with Repairs
You have to bear in mind that an excellent troubleshooter is one who sets aside first the section or box that is not passing then signal, and once done, begins on the work. Another very essential thing that you need to keep in mind is that a good electrician who looks forward to repairing a dead VFD quickly and efficiently takes into account the different safety measures that have to be used before, during and even after the troubleshooting process. Capacitors could contain highly life-threatening charges even after they are unplugged.