Fix a VFD tripping on “Overvoltage” during deceleration. Course 8: Electrical Schematics & Panel Troubleshooting Focus: Reading industrial drawings, finding shorts, opens, and ground faults.
Using a schematic, find why a pump will not start – all indicators are off. Course 9: Electric Motor Maintenance & Failure Analysis Focus: Megger testing, bearing replacement, alignment, and winding evaluation. 10 Industrial Electrical Training Video Course Library
| Segment | Topic | Key Demo | |---------|-------|-----------| | 1 | Fuse construction: fast-blow, time-delay, Class CC, J, RK5, T | Cutaway of a Class J fuse | | 2 | Circuit breaker thermal-magnetic trip mechanism | Demonstrate instantaneous vs. long-time trip | | 3 | Understanding trip curves (B, C, D, K) | Overlay trip curves on a single chart | | 4 | Selective coordination – why it matters | Two breakers in series test | | 5 | SCCR (Short-Circuit Current Rating) & fuse replacement safety | Damage from wrong fuse type | Fix a VFD tripping on “Overvoltage” during deceleration
Choose a fuse type for a motor circuit with high inrush current. Course 6: Control Circuits – Relays, Timers & Sensors Focus: Industrial control logic, timing relays, proximity/photo sensors, and basic ladder logic. Course 9: Electric Motor Maintenance & Failure Analysis
Troubleshoot a contactor that chatters when energized. Course 5: Overcurrent Protection – Fuses & Circuit Breakers Focus: Fuse types, breaker trip curves, selective coordination, and short-circuit ratings.
| Segment | Topic | Key Demo | |---------|-------|-----------| | 1 | One-line diagrams vs. wiring diagrams vs. ladder logic | Trace power from utility to motor | | 2 | Wire numbering & terminal strip labeling | Follow a wire from page 3 to page 10 | | 3 | Finding an open circuit – step-by-step voltage method | Locate a broken wire in a control loop | | 4 | Finding a short circuit – resistance method | Blown fuse investigation | | 5 | Ground fault location using a megohmmeter | Isolate a wet motor winding |
