Answer / sanjay kolambekar

Small Generator's are usually a low voltage or
highimpedance in case of HV generator with lower rating
hence the fault current will be less and equipments can
withstand the same. Where as in case of HV Generators with
larger ratings the voltage level is high or the impedance
is low hence the fault current is much higheer. In order to
limit the Fault current to the required level suitable
rating of resistance needs to be introduced between the
Generator neutral and Earth.

Answer / subash

in HV Generators with larger ratings the voltage level is
high or the impedance is low hence the fault current is
much higheer. In order to limit the Fault current to the
required level suitable rating of resistance needs to be
introduced between the Generator neutral and Earth and to
protect the insulation of the generator and getting heated
up while fault uccurs

Answer / k.prakashchandra

Electrical energy is directly is utilised in case of small
alternators whereas it is not so in HT generators.

what is physical distance of isolator to VCB in 33/11kv sub stations

0 Answers   Enercon,

---

why we short ckt the secondry vo5tage/ winding in transfr and motor?

2 Answers  

---

can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?

0 Answers  

---

what are the tests comes under the type test, what tests comes under routine tests.

0 Answers  

---

my question is that....few days ago i had installed a three phase motor starter for an electric saw.the motor will run and make the hydraulic pressure which will be goes to pressure cylender by up and down lever.two number of limitswitches are also installed on cylinder for safety of motor.now when the arm of cylinder reaches to the upper or lower limit it will cut the motor's line.and motor will be stop.now wana know that what will i do that motor runs continue after the limitswitch cut it down but it shold not be made any pressure.pls answer me in brief.

3 Answers  

---

what is MULTIPLYING FACTOR in substations??

2 Answers  

---

what kinds of Transformer oil grade is better for power transformer ?

0 Answers   KSRM Steel Plant,

---

Define motor & pump?

3 Answers  

---

bitumar

0 Answers   Bhel,

---

i alternator which of genarator used for excitor the what is reason?

3 Answers  

---

what use can we make of 3rd harmonic component

5 Answers   Bhel, General Motors GM,

---

How to increase the backup of three phase ups?

1 Answers  

---