Answer / uma sanker dwivedi

GENERATOR WILL FAIL TO START AS THERE WILL NOT BE ANY
EXCITATION TO THE FIELD WINDINGS SO NO EMF WILL BE
GENERATED.

Answer / logeswaran

AVR is nothing but a automatic voltage regulator.it ill
regulate the field input based on terminal voltage either no
load or full load condition.

if AVR fails in alternator...?

The alternator output we will get only residual voltage at
no load condition based on the residual magnetism.

The residual Approximately for 1 & 3 phase 4 pole alternators:
min:4 V to max: 90 V.

Answer / satya dev ( knight frank)

The function of AVR in the Alternator is to controlled the
Alternator's voltage by controlling the excitation voltage
of stator, if The AVR fails on Load the voltage will be
reduced to zerro.

can we coorect P.F. OF 320 KVA ALTERNATOR AT LOCAL SITE WITH RATED .8 PF LAGGING.

1 Answers  

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Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

0 Answers   Piramal Healthcare,

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What is the Ideal Earth to Neutral Rating for Techonology Equipment like Routers, Switched, PABX, Computers etc etc?

2 Answers  

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HOW MANY TYPES OF FUSE?

0 Answers  

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Hello,l am complete dip and i was working maintance in ht dep again i study b.e completed again one year exp in ht totally two year i am ealigble in c license

1 Answers  

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Is there any scope for an electrical engineer in MRF company......

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why neutral of 6.6 kv star connected sq. cage induction motor does not get earthed, though for earth fault protection it is must.

7 Answers  

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explain different losses in a transformer.

0 Answers  

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WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

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what are the types of Distribution transformer vector group please explain

7 Answers  

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what is transformer?

4 Answers   Mphasis,

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Baud rate is used to descrice...?

2 Answers  

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