Basic Electrical Troubleshooting Techniques Every Electrician Must Know
As an electrician, you are expected to encounter a lot of electrical circuits and drives that will malfunction 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. Just go on reading in order to started right away.
Nowadays, the solid-state electronic AC motor drive has become really common inside industrial plants. It is in control of a wide range of devices like mixers, machine tools, chillers, air handlers, conveyors and pumps. It may also be utilized to control a wide range of other electrical devices that are once utilized and powered through the DC. As is usually the case, the said damages on electrical devices are caused by the rectifier section, so it makes sense for an electrician like you to develop understanding on transistors, insulated gate bipolar transistors, diodes, and silicone controlled rectifiers.
Talking of AC drives, the most popular used are the pulse width modulated inverter drives. It functions by converting the AC line voltage into a DC and then constructed again to become a variable frequency as well as a variable voltage output. Change in frequency can cause changes in the motor speed. For the sake of ensuring the motor torque is maintained, the volts-to-frequency ratio is put at a constant.
Finding Parallels Between Repairs and Life
Now, what do you need to do in order to fix a problematic motor drive? Because most of the failures in the power section and not in the circuit boards, that will not be so difficult to fix. Being an ordinary plant maintenance technician, it can be that challenging to gain expertise in the repair of circuit boards since there will not be so many problems on circuit boards to deal with. In order to successful fix a variable frequency drive, you need to make use of a methodical approach. When knowledge of the device is not so broad, you can cling to the divide-and-conquer method that is taught in all technical schools.
Finding Similarities Between Repairs and Life
One thing you need to be mindful of is that a good troubleshooter will always decide to set aside first the box or section where signal is no longer passing and right after, gets the repair work started. It is even more necessary to remember that in the realm of troubleshooting a dead VFD quickly and effectively, you have to think of safety ahead of time. There can be charges remaining in the capacitors even when they have been plugged out.