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how to calculate regulation constants for over head lines? and what are the regulation constant for raccoon conductor at different voltage level and different P.F?
1929Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA
1801iam completed my DEEE in eillm university. can i get the c licence in tamilnadu its possible or not
1 3810why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?
2757What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection
ABB,
3773What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?
3970What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer
ABB,
2328What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current
2330Post New Electrical Engineering Questions
How to decide DO set rating of Transformer?
What does the letter CTNM in negative phase sequence relay means?
What is the comparison of PILC and XLPE cable
How do apply electrical 'c'license......pls advice
Can i replace Earth leakage relay to the faulty Earth Faulty Relay
How to select a contactor? How many types of contactors are available
why does connected a indutor with mnsformeretering core of current transformer ?
In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?
If VFD is On but no starting commond on it. so how many outpout voltages of VFD
what is difference between bus coupler and auto transfer switch
What does the kvar means?
what is mean by parallel operation of permanent magnet generators
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
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What is slope...? Explain slope 1 and slope 2...?
