when a cunductor is being disconnected from live cct, still
it showing charged, if its checked by line tester?
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Answer Posted / sean
GUYZ PILLIIISS POST CORRECT ANSWER..
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how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)
a)In a 3-phase 4-wire circuit, a circuit breaker is selected to protect the circuit whose highest fault level is 6.6 MVA. Determine the required minimum breaking capacity in kA. (Note: Covert 3-phase power in terms of kA to find answer.) b)Using the below, determine the required minimum making capacity in kA as a “peak value”. Rate breaking capacity (Icn) ka: Icn<= 1.5 Factor = 1.41 1.5
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In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes
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plz send me Bhel, Mahagenco, sbi previous exam paper for electrical engineer on my email-id kambali_smita@yahoo.co.in
