This is a Megger DET3TD, a digital three-pole earth resistance tester used to measure the electrical resistance of grounding systems.
Key Features
Testing Capability: It supports both 2-pole and 3-pole testing methods.
Voltage Selection: Includes a \(25\text{V}\) or \(50\text{V}\) selector to accommodate different site requirements.
Ease of Use: Features a simple one-button operation for testing and a large selector dial for switching between modes (Voltage, Off, 2-pole, and 3-pole).
Durability: Rated IP54, making it suitable for outdoor use in various weather conditions.