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Learn more about selectivity: let's start with ABC.
The different selectivity techniques, also from the operational point of view.
SOC is a tool that can be used to choose and coordinates ABB protection devices.
Curves is a tool found in the e-Design suite, which is used for setting the trip characteristics of the protection devices and verifying selectivity in low voltage plants.
DOC is a tool found in the e-Design suite used for calculating and sizing medium- and low-voltage electrical installations, and for selecting and coordinating ABB protection devices.
Here are some documents from ABB Library to get deeper information about theory, basic techniques, applications and case studies.
The requirements about selectivity, from the international Standards.
How to get selectivity between low and medium voltage devices.
How to get selectivity between residual current protective devices.
Evaluation of the real currents circulating inside circuit-breakers.
Here you can find the main rules to design selectivity between fuses or fuses and breakers.