Two common protective trip conditions in low-voltage AC drives (and similarly in DC drive systems) are overcurrent faults and motor overloads. This article explains what these terms …

This application note focuses on overcurrent protection based on operational amplifiers or current sensing, which can measure and amplify a current flowing into a shunt resistance, and …

Precise overcurrent relay usage asks for the knowledge of the short circuit current that can flow in each section of the power network. Since large-scale measurements and tests are typically …

The overcurrent relay schemes commonly used consist of phase overcurrent relays on the high side of the transformer and a ground relay on the secondary side in the neutral of the …

} Overcurrent protection of conductors is a critical safety component to ensure an electric circuit will fail properly. Bypassing overcurrent protection is extremely dangerous to persons and …

Using a fuse is the most common overcurrent implementation, “after the fact”. Difficult to predict the precise over-current level at which the fuse will open; requires more margin to be built into …

The intent of this section is to localize an overcurrent condition to the affected circuit. Without short-circuit coordination, there may be equipment loads in the building that lose power …