You searched for RESISTANCE - Page 60 of 144

Stator Protection

Stator Protection: Stator Protection - The type of stator faults likely to occur have been discussed already. The earth-fault current is usually limited by resistance in the neutral of the…

Restricted Earth Fault Protection

Restricted Earth Fault Protection: This type of Restricted Earth Fault Protection is provided to detect earth-faults within the protected zone of the transformer. A CT is fitted in each connection…

Star Winding and Delta Winding

Star Winding and Delta Winding: Star Winding and Delta Winding - The magnitude of earth-fault current for a given fault position within a winding depends upon the winding connections and…

Carrier Pilot Protection and Microwave Pilot Protection: The problem of providing economically an auxiliary channel by means of pilots for long lines directed attention to carrier techniques. In this case…

Pilot Wire Protection Relay

Pilot Wire Protection Relay: In this case the auxiliary Pilot Wire Protection Relay are provided to carry the information signals from one end to the other. Protective systems requiring the…

Selection of Distance Relay

Selection of Distance Relay: The factors to be considered for the Selection of Distance Relay scheme can be enumerated as follows: Speed of operation. Measuring relay characteristics. Fault coverage. Economic…

Power Swings in Power System Protection

Power Swings in Power System Protection: The impedance measured or seen by a distance relay during normal load is shown in Fig. (5.29). Normally this would be outside the tripping…

Distance Protection by Reactance Relays

Distance Protection by Reactance Relays: Like impedance relays, Distance Protection by Reactance Relays are also amplitude comparators and thus require an additional directional unit. Although the performance of reactance relays…