What reading would be shown on an ohmmeter between connection points X1 and H2 in a transformer winding?

When using an ohmmeter to measure the resistance between connection points in a transformer winding, an output of "OL" indicates that the circuit is open or that there is no continuity. This reading typically suggests that there is a break in the winding or other issues preventing a complete path for current flow.

In transformers, the windings are designed to create a magnetic field through energized coil connections. If the ohmmeter shows "OL," this often points to a malfunction, such as a burned-out winding or a break in the wire, since under normal operating conditions, a reading would reflect the resistance of the coil rather than an open circuit.

Understanding this concept is essential for diagnosing transformer issues during maintenance or troubleshooting. In contrast, a reading of zero would indicate a short circuit, a specific resistance value like 100 ohms might pertain to a functional winding, and an infinite reading could, in some contexts, imply there is an open circuit but does not effectively convey the diagnostic meaning as "OL" does in most ohmmeter usage scenarios.