Answer / vinod

when a load is to be breaked suddenly with a less
decelaration time or when a motor is stoped within its
system time constnt,they regenerate the energy back to the
mains.this regeneration happens through VFD.

to dissipate this regenerated energy a breaking resistor is
connected to the VFD.

Answer / shinyvikram ganji

usually braking resistor is associated with drives.suppose
a motor is running at some speed.assume the supply is cut
of suddenely.but the rotor continues to rotate and
generates emf.so the produced emf is to be dissipated in
the resitor for motor to be halted

Answer / vinamra

If the motor supply is cutoff instantly,but due to inertia
the motor can not stop instantly and it generate the
voltage and fed to drive due to less deaccelaration of
drive.To consumed this energy we connect the brake resister
in drive.

How to Calculate Transformer Earthing Electrode Rod Size both Body and neutral Earthing ? Any Standard Formula? Please Suggted

0 Answers   EnPro,

---

In oil transformer which oil is used & what should be the insulation resistance & heating capacity.

2 Answers  

---

If oil and air can withstand a high MeV when used as an insulator in a transformer, what are the values of how high for each material?

0 Answers  

---

what is the effect of higher value of GD???

0 Answers   VEPL,

---

is it possible to start a motor in felid connected to a remote mcc

0 Answers   BIET,

---

---

what is diffrence between dc motor and dc generator?

3 Answers   HBL Power Systems,

---

What kind of preventive maintenance are there for AC generator?

1 Answers   Gulf,

---

What's an AVR? What's its purpose in Generators?

4 Answers  

---

can we use NPT glands in LT panel

0 Answers  

---

Hi i want to know that in generation station what we are generate either voltage or current

1 Answers  

---

why our power production in multiples of 11.

2 Answers   ABB, Infosys,

---

On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

0 Answers   Kwekwe Polytechnic,

---