Answer / mahadevan

The voltage feedback giving to AVR for maintaining the voltage certain(nominal) limit and current feedback giving to AVR for avoid operation above certain range of current value because OLTC operation in higher current load is risky.

Answer / gunasekaran

avr are 2 type one is voltage detection another one is load
compensation for voltage detection inout is voltage for
load compensation we have to give both voltage and current
so we r using gen avr are loadcompensation type

Answer / leelashar kashyap

First of all, we dont have any machine that give output without input. we have CT connected to thegenset o/p &secondry of the CT is connected to the AVR. the AVR sense the current o/p of Genset & give commond to the control system of excitation to control the excitation voltage & current.

how to find out basic difference between ELCB,MCB AND RCCB on seeing the materials?

1 Answers   L&T,

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We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob.that motor winding temp increase up to 135 deg.we want reduce this temp.what to do?we arrange ext.cooling fan but not much effect.we want reduce this temp. Inhouse without affecting much.cost. also don't want reWINDING OF MOTOR?

3 Answers  

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what is the main purpose of line PT and bus PT?

11 Answers   L&T,

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we have 400kv/6.6kv transformer ,it has total 9 taps on HV side with normal tap on tap no 5.when we took the ratio test we observed that ratio was decreasing from tap 1 to tap 5 and was found increasing from tap 5 to tap 9.What is the reason?if anyone have related document then please send me on the email id ankushbahale@gmail.com......plz plz

1 Answers  

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standard earthing rating for power line..

0 Answers  

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What are the voltages at which electrical energy is transmitted

7 Answers   KSEB,

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Can we see the poles in the motor?. if yes then how can we see plz tel me

2 Answers   MRF,

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What is the lockout relay

0 Answers  

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why commutator are not used in rectification purpose in power electronics?

1 Answers  

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where HT & LT capacitor uses ?

2 Answers   NTPC,

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sir iam from electrical and electronics branch ,can i appear for the hpcl offline requirtment? if yes please mail me on vikram_raju25@yahoo.co.in

0 Answers   HPCL,

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why we use ac as a electric appliance in home or daily use?

1 Answers   MNC,

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