GATE Electrical Engineering (EE) 2014 Shift 1 Solved Paper

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Question : 53 of 65
 
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The overcurrent relays for the line protection and loads connected at the buses are shown in the figure.

The relays are IDMT in nature having the characteristic
top=0.14× Time Multiplier Setting ( Plug Setting Multiplier )0.02−1
The maximum and minimum fault currents at bus B are 2000 A and 500 A respectively. Assuming the time multiplier setting and plug setting for relay RB to be 0.1 and 5A respectively, the operating time of RB (in seconds) is_______
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