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test de haute tension

High voltage testing in electrical testing is a process used to verify the insulation strength and the overall integrity of electrical components, systems, or equipment. The goal is to ensure that these systems can safely operate under normal operating conditions, including any potential voltage surges or spikes. High voltage tester helps detect weaknesses or defects in the insulation materials or construction of electrical equipment, reducing the risk of failures during operation.

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Types of High Voltage Test​

1. Hipot Test (High Potential Test)​

We could charge the equipment's conductors with high voltage while performing this test. If the insulation doesn't hold, the current would appear, signaling a malfunction of the equipment.​

2. Lightning Impulse Test​

The purpose of the trial is to simulate the outcomes of lightning strikes and high-voltage surges on the electrical equipment. We perform such trials to determine whether the equipment can resist instant overvoltages.​

Applications of High Voltage Testing​

  • Power transformers: We could use it to ensure insulation stays intact.​
  • Switchgear: We could check how it performs under high-voltage conditions.​
  • Cables: We could test the insulation strength, especially for long-distance transmission lines.​
  • Motors and generators: We could evaluate the condition of their insulation systems.​

Safety Considerations​

High voltage testing is risky, so safety steps are a must:​
  1. Ground the equipment and testing system properly.​
  1. Wear personal protective equipment (PPE), like insulating gloves and safety shoes.​
  1. Label test areas as hazardous zones.​
  1. Operate testing equipment remotely to lower the risk of electric shock.​
High voltage testing is essential in ensuring that the electric systems are safe, dependable and will not fail working under high voltage.