Answer / k.prakashchandra

Electrical drawout is with a motor

Answer / vishwa2381981

By pressing a push button for NC The supply will feed to the
system to draw out & by rotating the Handle t draw out so this
is the difference

Answer / ranjana

manual draw out is the De-assembled procedure of
trolleys(VCBs) FROM PANEL.
A circuit breaker racking mechanism has a toroidal spring
connected between an inner and outer racking shaft. The
inner shaft is connected to the cubicle within which the
circuit breaker truck is moved while the outer shaft is
connected to the manual racking mechanism. The spring serves
as a direct mechanical force transmitting connection between
the inner and outer racking shafts when the breaker which
enters the cubicle is moved to the test position. After the
breaker reaches the test position, the inner racking shaft
is latched so that continued racking toward the connected
position charges the spring connection between the two
racking shaft members. The latch may be remotely defeated to
release the spring, thereby to complete the racking of the
breaker to its connected position under the influence of the
charged spring with operating personnel in a remote position.

What is the need for checking knee point voltage for CT's?

1 Answers  

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how many types of transformer.

3 Answers   Technocrats,

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why high current produce in case of transformer when turns are internally gets shorted.

3 Answers   TCS,

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TRAFO 1. WHY BREATHER IS USED. 2. WHY OIL GOES DOWN IN CONSERVATOR TANK. 3. WHY WE ARE TAKING OIL SAMPLE TAKING FROM BOTTOM OF TRANSFORMER. 4. HOW TO CHECK IR VALUE OF TRANSFORMER. 5. WHY OLTC HAVING BUCHHOLZ TRIP ONLY; WHY NO ALARM. 6. OFF LOAD TAP CHANGER OPERATION PROCEDURE. 7. TR. SHUTDOWN / ISOLATION PROCEDURE. 8. WHEN THREE TRS. IN PARALLEL, ONE TR. IS NOT SHARING THE LOAD – WHAT IS REASON AND WHAT YOU WILL DO. 9. WHY TR. HAS OLTC IN HV SIDE. 10. WHAT IS % IMPEDANCE. 11. WHY TR. RATING IN MVA. 12. WHAT IS VECTOR GROUP IN TR. 13. CONDITION FOR PARALLEL OPERATION OF TRS. 14. WHAT IS TERTIARY WINDING. WHERE IT WILL BE. 15. IF TR. TRIP ON BUCHHOLZ OR TAP CHANGER RELAY, WHAT YOU WILL DO. 16. DIFFERENCE BETWEEN OIL TEMP. AND WINDING TEMP. PROTECTION 17. HOW WINDING TEMP. IS MEASURED IN CAST RESIN TR. 18. DIFFERENT TYPES OF FAULTS IN TR. Trafo - Page-1 of 2 19. WHAT HAPPENS WHEN TR. CHARGED FROM LV. 20. WHAT WILL YOU DO IF MEGGER READING SHOWS ZERO BETWEEN LV WINDING AND EARTH. 21. CAN WE INTERCHANGE BUCHHOLZ RELAY OF MAIN TANK AND OLTC TANK. 22. IF THE LINE BETWEEN BREATHER AND CONSERVATOR TANK 23. LOCKED, WHAT WILL HAPPEN DURING LOAD CYCLE. 24. WHAT IS THE FUNCTION OF OIL SEAL IN BREATHER. 25. WHAT ARE LOCATIONS FOR BUCHHOLZ RELAY FIXED IN POWER TR. 26. WHAT ARE CHECKS IN POWER TR. DURING MAINTENANCE. 27. WHAT IS IMPORTANT WHEN WE CHECK OLTC OPERATION DURING MAINTENANCE. Trafo - Page 2 of 2

0 Answers   KSEB,

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all 3 current transformers (C.T) are burnt in a L.T Panel - what are the possible reasons

5 Answers  

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why after termination of HT cable armoured earth connected one end, why not connect other end.pls tell me correct answer.

3 Answers  

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I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.

0 Answers   BSL,

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What is the differance between 2 dc motors of armature voltage 660 v and 440 v?

0 Answers   Kirloskar,

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directional over current relay when acted & how it works

3 Answers   NCC, ThyssenKrupp,

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how is calculated the quantity of weight in hot test xlpe?

0 Answers   Hirbodan,

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hi.. i am krishna. i've complide my diploma engg.in electrical.i applied many places for jobs.but i am always fear from written test.ican't get success in it. i think my basic engg. is weak..show me some idea please..!

5 Answers  

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we have an energy meter in a capacitor bank panel, So should we consider it's readings as energy consumption on daily basis. (when capacitor bank doesn't have any energy losses)

0 Answers   Honda,

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