Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

64F

Protection functions

Field ground-fault protection

Detects an earth fault in a machine field circuit using the selected field-ground detection arrangement.

Field-ground protection addresses the rotor excitation circuit; stator-ground function 64G addresses a different insulation system.

Protection functions

Identifies an earth or ground fault using the circuit arrangement specified for the device.

The base number 64 does not state whether detection uses current, voltage or insulation measurement.

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.