What is Symmetrical components – Sequence Components ?
Unbalanced 3 phase system can be resolved into 3 balanced systems – Positive, Negative and Zero Sequence Symmetrical components.
Protection
Unbalanced 3 phase system can be resolved into 3 balanced systems – Positive, Negative and Zero Sequence Symmetrical components.
Types of Fuse Link IEC 60269, gG, gM, gR, gS, gD, gN. HRC Fuse, Semiconductor Fuse.
Thermal Memory of CB remembers previous fault, till conductor cools – comes to Ambient temperature, if CB is closed before this it will to trip CB faster.
ANSI standard Device Numbers and Acronyms, for Intelligent Electronic Device – IED Protection Relays / microprocessor based controllers / Numeric relay.
Thermal Classification of Electrical Insulating Materials, basis Permissible Temperature Rise above Ambient Temperatuer and Hotspot.