How can you troubleshoot electrical systems without blueprints or schematics?

You as specialist in your career in electrical maintenance, you must keep the electrical system in high reliability and performance by keep it run smoothly, so some times you need make urgent troubleshooting for the system if it classifier depend on system or apparatus. IF it was classifier depend on system like EHV, HV, MV, LV or ELV system. And if it was classified depend on apparatus like Generator, transformer, transmission line, busbar or motor. So we need to know about component of the items was worked on its. If we didn't have the blueprints, we must know the basic about how deal with it. So we must know the standard of safety, the knowledge about component.

Analisar o sistema como um todo é o primeiro passo para entender como ele funciona. A partir disto, devemos reduzir o mesmo em pequenas partes e verificar se encontramos as variáveis esperadas ou n?o. Se for necessário uma interven??o, devemos garantir energia zero, aterramentos temporários e os respectivos bloqueios, evitando que o sistema seja energizado acidentalmente. Com o sistema devidamente desernegizado e bloqueado, podemos fazer as medi??es e ,através da engenharia reversa, identificar a fonte do problema.

Here some steps you can take Identify the problem Start by clearly identifying the issue you're facing. Is it a complete power outage, a specific circuit malfunction,or something else? Visual inspection Perform a visual inspection of the electrical components involved.Look for any obvious signs of damage,loose connections, or burnt-out components.Check disconnected wires, tripped circuit breakers,or blown fuses. Physical inspections can often reveal visible issues that can be fixed without detailed schematics. Trace the power flow Follow the path of the electrical current through the system.Identify the power source and trace the wiring from there. Look for junction boxes, electrical panels, or other control points where connections.

L'identification du système et le composant est très important pour comprendre le fonctionnement avant d'intervenir. Utilisez les fiches techniques disponibles chez les fabricants.

troubleshooting electrical systems without blueprints is challenging. Visual inspection, documentation review, and labelling are crucial. Trace electrical paths, use basic test equipment, and isolate circuits. Observe system behaviour and consult colleagues for insights. Research technical manuals and document findings. Prioritize safety, and seek professional assistance if needed.

During any troubleshooting, firstly we need to know about electrical circuit that all power must re turn back to source, and the load must be protected and isolated during our work on it. So all parts it was very important to put it in good condition after our work. So if we didn't have blueprints we must to deal with items separately with suitable device to test it or measure it. Like insulation resistance, Ohm measurement, voltage and current measurement, loop resistance breaker function.

Such a nebulous answer, I think this was written by ChatGPT or something. Let me break down step one down to something actionable. Test back the system till you find parts that work. Then test forward till you find parts that don’t work. Your problem, most of the time, lies somewhere in between. You now have established boundary conditions for your fault.

Il est très compliqué voir impossible de tracer le chemin des circuits sur des cartes multicouche , préconisez le remplacement de la carte.

Depois que tiver no??o do equipamento e como ele tem que funcionar já consegue realizar medi??es para identificar cabos ou até mesmo achar problemas elétricos em circuito ou dependentes dele.

Troubleshooting is almost a lost art. Mastering the art of troubleshooting is trial and error. It is understood that with electrical, there is a beginning and an end to the process, a start and a finish. It is all about "Process." The start is at the beginning with the power supply. The operation process is pertinent to your troubleshooting skills. Without a Schematic, I need the operator. That person gives me the rundown on what the equipment does from point A to Z. The process is vital. Troubleshooting is like taking a Rubrics Cube and solving it in one nanosecond. Electricians never know what is depending on their troubleshooting skills. Someone's life, maybe. Knowing the process from point A to point B is the answer to the riddle.

All component of electrical circuit loop must has at least one method to isolate it by ( circuit breaker, isolator, load break switch, ... ETC). So if we take the circuit breaker as example it was used as protection device and used to isolate the apparatus before work on it. We test the devices and take some measurement to detect the faults, like ohmmeters, megohmmeters, insulation testers, and oscilloscopes to measure and analyze the resistance, capacitance, inductance, and waveform of the components. Some of tests need specialist from outside the plants so we must know the manufacturer and the contact for technical support office. And we must have the training to know the new and how to deal.

This isn’t necessary unless the parts are costly. And even then, you should have spares anyways. If you don’t have spares because, once again, cost. Then individual isolation and testing may be necessary.

Remplacer les composants défectueux à l'identique pour éviter un mauvais dimensionnement et des dysfonctionnement du système.

Now the system totally isolated and the faulty location or device was detected, and the action must be taken to replace the defected part and the protection system play the important roles to protect the system from damage so change the defected part must be by correct way to prevent the system from repeat the fault or increase the instability in system. Some parts easy to change and other need study and prepare special tools to complete the job. So prepare your self and all tools and paper you need before start to finish your work without any intrubtion.

There is nothing wrong with throwing parts at a problem if you do it methodically. In facilities, you are going to have spares that you KNOW work. Refer to step 1’s boundary conditions and plug different parts in randomly till you get a result. Because you don’t know if the fault is one component. If all of a sudden everything turns back on properly, start randomly pulling those spares out and replacing them with originals till it doesn’t work again. Go through this with every part you replaced with a spare and you will find your exact combination of failure suspects.

Realizar una evaluación previa de todo el entorno del área trabajar o del equipo a realizar la reparación evaluar riesgos Eléctricos desconectar todas las fuentes de suministro de voltaje verificar tener el equipo de medición y herramientas para poder checar o diagnosticar alguna parte electrónica o eléctrica que esté da?ada, buscar en el equipo el diagrama eléctrico si existe y si no buscar los datos técnicos y poder buscar información en Internet tener todo el equipo de protección personal para ejecutar dicha tarea y tratar de comprender el sistema intervenir de no tener el suficiente conocimiento de ayuda a otra persona antes de proceder a hacer el trabajo o reparación.

Repaired the motherboard as per test of components in this parts we can replace some components like as diode, resister, capacitor, transistor etc.

As per experience and expertise of component level work we can diagnose the system very easily and some heating components should be checked by visual inspection also.

If the circuits or area you are checking needs to be operational 24/7 then this will not work. If you can shut off equipment I recommend that the circuit breakers, HOA switches and motor control center switches be switch on and off to find out what turns off or what doesn’t have power.

Thermal imaging gun to check all hot spots - panel box shows hot or loose connections, detects hot spots on circuit boards etc