 WHY "GROUNDING TEST" IS NECESSARY |
| "Grounding" has a few different purposes, such as for safety and for the stability of the electrical circuits. Listed below is more info about it. |
| 1. Power system to the ground: As shown in figure, the purpose is preventing the secondary side from the damage of the primary side. It's necessary for user's safety. |
| 2. Equipment to the ground: Connect equipments or shells to the ground. The purpose is protecting the user from the leakage of the equipments. |
| 3. Electrical signal to the ground: Set up a "Zero volt" reference point or a loop path for all different signals. The purpose is for correct action or measuring. |
| 4. Grounding for shielding: Top prevent static electricity. To prevent noise, electromagnetic interference (put shielding). Shielding room, cable and communication wires to the ground, equipment's guard terminals to the ground, power transformers and filters to the ground. |
