Circuit Diagrams
The following diagrams show the equivalent circuit of the measuring devices.
Leakage current readings are generated by measuring the voltage drop across these
networks and dividing by the equivalent DC resistance. The voltmeter is placed
across the entire network of the measuring devices MD1, MD2, and MD4. The
voltmeter is placed across the points indicated by the solid black dots on measuring
device MD3, MD5 and MD6. The points are specified by the agencies that require a
particular measuring device to meet their specification.