What happens if a three phase induction motor is suddenly single-phased while running? Which type of winding connection will be affected?

22 Answers   B4S Solutions, DRDO, FACT, SL Electricals,

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What are the different protection systems used to protect the transformer internally and externally?

16 Answers  

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why most of the induction are delta connected?

6 Answers  

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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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Mathemetical Relation Between KWRH and KWH?

3 Answers   UPPCL,

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How we can differniate the overhead lines feeded by hydro power stations & thermal power stations

1 Answers  

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Which is the oldest hydropower plant in india?

0 Answers  

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Which thing is maximum in RLC circuit at resonance a)power consumption b)inductive current c)capacitive voltage

0 Answers  

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why table fans rotate clockwise .while ceiling in anti clockwise?

4 Answers  

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what is interference

1 Answers   L&T,

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CT Ratio of a energy meter connection is Red Phase : 100/5A, yello Phase : 50/5A & Blue phase : 100/5 A what is the overall Multiplication factor

0 Answers  

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now a shunt motor is practically a constant speed motor , then how does it meet the increase or decrease in the load ?

1 Answers  

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