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train braking process indian railways contunity process guards loco pilot train brake apply bp pressure brake pipe pressure continuity national electricity policy and plans background of act electricity act 2003 two-third phenomenon electricity act 22-4-13 electricity act acts of electricity recommendations for providing bus bar protection need for bus bar protection high impedance differential relay types of bus-bar protections basics of busbar protection bus bar protection schemes requirement of bus bar protection protections zones simple current differential scheme idbt characteristic of a relay instantaneous over-current relay high speed differential protection applications of auto transformer inductional law in auto transformer disadvantages of auto transformer conversion of two-winding transformet to auto tra limitations of auto transformer. advantages of auto transformer types of auto transformer copper saving advantage in auto transformer description of auto-transformer working principle constructional features of auto transformer dagerous about infrared rays the electromagnetic spectrum protection from infrared rays properties of infrared rays process of discovery of infrared rays discovery of infrared rays about infrared radiations today's usage of infrared rays futre usage of infrared rays/radiations history of infrared rays breaker monitoring condition monitoring of ct sweep frequency response analysis overhauling surge arresters monitoring of transformer thermal imaging condition monitoring of relays. condition monitoring of cvt oil analysis of switchgear elements containing oil testing and condition monitoring of substation equ tests on insulating oil tan delta and capacitance transformer specifications on-load tap changer components of power system protection static relay fault statics numerical relay thermal relay power system protection and metering types of faults and effects unsymmetrical faults induction relay classification of relay symmetrical faults relay negative sequence time overcurrent relay low impedance grounding field ground fault protection high impedance grounding generator capability curve stator faults rotor faults generator protection over current protection protection against overfluxing of transformer differential protection scheme of transformer various protection schemes of transformer buchholz relay restricted earth fault relay protection protection of transformer