Durchgangstest

Durchgangstest, also known as a continuity test, is a basic electrical test used to determine whether there is a conductive path between two points in a circuit. It is commonly performed with a multimeter in continuity mode or with a dedicated continuity tester that emits an audible signal when a path with low resistance exists.

To perform a Durchgangstest, ensure the circuit is de-energized and, if necessary, isolated from power. Place the test probes on the two points to be checked. If a continuous path exists, the tester will typically beep or display a low resistance value; otherwise, the meter may show “open” or a high resistance reading. Thresholds vary by instrument but are designed to indicate a usable connection.

Typical applications include verifying wiring integrity in harnesses and cables, checking fuses and switches, diagnosing automotive wiring, and troubleshooting electronic assemblies. It is especially useful for quickly confirming that a disconnected wire is present at the other end.

Limitations: a Durchgangstest only confirms the existence of a path, not the quality of the connection or its resistance under load. It does not test current-carrying capacity or insulation; a live-circuit measurement can be dangerous and may damage components. For precise resistance values, use a conventional Ohmmeter; for insulation integrity, use insulation resistance testing equipment.

In German-language technical contexts, the term Durchgangstest is widely understood as a basic continuity check that helps identify open circuits and broken connections.