what is differnce between grounding and earthing or both are same?

3 Answers  

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What are the safety devices on Cumins Diesel Generators from 500 kva to 1500 kva.

1 Answers   Maruti Suzuki,

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What is meant by stator?

0 Answers  

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how to calculate the knee point voltage of current transformer?

2 Answers  

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is it possible to test of bus bar in high rise building without completed full floor ?

0 Answers  

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What is electrical charger?

3 Answers   HCL,

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Load 380kva eb 415v,load amps 350.Same load dg 415v,load amps 420 what reason ?

1 Answers   AVT Natural Products,

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hy i need help with LabView, I need a sample code of LabView to download serial data from the Intellivue Patient Monitor to PC. Thank you in advance.

1 Answers  

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What is the difference between Neutral and Earth

6 Answers   Bhel,

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On load tap changer (OLTC) explode? Transformer Vector group: Ynd11 Rated Power: 353MVA Rated Current: 693A Voltage:294/20KV OLTC Type: T III Y1000 110/c 12193w Max Operation Current: 295A Step Voltage: 550V Arrangement in Tx windings: Y Connection Problem: Damage of Unit 1 Generator Transformer On Load Tap Changer (OLTC) Description of Incident: 9.00 a.m. :- Generator No Load test on excitation system started 10.30 a.m :- Carried out AVR change over test 11.30 a.m :- Preparation for Generator Manual Synchronizing test 12.00 a.m :- Manual Synshronizing test started. Observed incoming generator voltage higher than running voltage. CECR operator operated Generator Transformer OLTC to bring down the incoming generator voltage 12.03 a.m :-Generator Transformer abnormal alarm operated at Gen.Control Desk (CECR) CECR operater at Generator transformer bay informed that the transformer oil splashed out from OLTC. CECR operater informed that he heard explosion inside OLTC. Observed Oil level & Oil Flow alaram operated at Tranformer local annunciator. 12.05 am :- CECR operator 'Open Gen Field Breaker” 12.10 a.m. :- Elec1 team inspected the OLTC and found the OLTC rupture disk was broken and oil spilled at OLTC area. - Elec1 found the OLTC top cover bulging. Do anyone know why and possibility cause happen in this OLTC.

9 Answers  

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what is the difference between diode and zener diode?

4 Answers  

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What is the working principle of VFD

3 Answers   HCL,

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