Uploaded February 2026 | Updated September 2026, 1 week ago
Understanding the different functions of the Fluke GFL-1500 is essential for accurate and efficient troubleshooting. In this video, we explain the four primary modes, Analyze, Fault, Open, and Map, and clarify when each function should be used in the field.
Analyze mode measures voltage between conductors and estimates resistance to ground. Fault mode injects a tracing signal to locate ground faults using either the receiver or current clamp. We discuss when disconnecting parallel connections improves signal clarity and speeds up diagnostics.
Open mode helps locate breaks in circuits. Proper isolation and correct mode selection are critical for reliable results.
If you want to configure the Fluke GFL-1500 correctly for different PV fault scenarios, this overview will help you select the right function for faster and more precise diagnostics.
Learn more: fluke.com/en-us/product/electrical-testing/best-solar-energy-industry-tools/fluke-gfl-1500
Understanding the different functions of the Fluke GFL-1500 is essential for accurate and efficient troubleshooting. In this video, we explain the four primary modes, Analyze, Fault, Open, and Map, and clarify when each function should be used in the field.
Analyze mode measures voltage between conductors and estimates resistance to ground. Fault mode injects a tracing signal to locate ground faults using either the receiver or current clamp. We discuss when disconnecting parallel connections improves signal clarity and speeds up diagnostics.
Open mode helps locate breaks in circuits. Proper isolation and correct mode selection are critical for reliable results.
If you want to configure the Fluke GFL-1500 correctly for different PV fault scenarios, this overview will help you select the right function for faster and more precise diagnostics.
Learn more: fluke.com/en-us/product/electrical-testing/best-solar-energy-industry-tools/fluke-gfl-1500
