Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT
2110How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?
1737if i get a drop in my 1st year and the i clear my 2nd year and 3rd year all clear and i dont have any back logs so can i be able to sit in campus selection??
1368what is the rating of Insulation tester for measure 15 KW, 3 phase 415V 50 HZ induction motor?
ABB,
2 5160Post New Electrical Engineering Questions
What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.
What is the de rating factor of cable? What is the importance of the de rating factor in cable select
Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?
What is the function of the circuit breaker failure relay?
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
what is the AC Plant and how can do the work with parts and picture tell us 150 Tr
which mm cable should be used for 1.hp immersible pump motor for the distance of 330 metres?
WHAT R THE SAFETIES IN A HIGH TENSION PANEL N LOW TENSION PANEL. ALSO WAT SAFETIES R THERE IN A 200 KVA TRANSFORMER?
how to wiring it with contactor and timer together
How to set the relay,,??
Define conversion efficiency of a power amplifier. What is its value for class c power amplifier?
surge tank, hrc fuse, earthing transformer, firm power objective type
generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...
what is the difference between Power and Distribution transformers ?
A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.
