Answer / yusuf

> Opening and Closing Coil Resistance measurement
> Contact Resistance Measurement. (This Ensures minimum
Voltage drop)
> Timing Test(Ensures Fault clearance time)
> IR Measurement(Ensure proper Isolation from Ground and
between Phases)
Other than these, H.V, Flash Test, Tan Delta are also done
in the factory

Answer / manisand1

Above all some more test is to included i will clear this
in next time.

What is systematic error?

0 Answers  

---

How Arc Produced in Circuit Breaker When the contacts of the circuit breaker open.

1 Answers  

---

why sec of ct should be kept shorted

2 Answers   Enercon,

---

checking procedure of capacitor based motors.used in fans etc?

0 Answers   Badve,

---

What do you mean by reverse current braking of an induction motor?

1 Answers  

---

---

how do we know the LT or HT panel trip by some broblem which indication willshow

2 Answers   TATA,

---

we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

0 Answers   TNEB Tamil Nadu Electricity Board,

---

WHAT HAPPENING TO TRANSFORMER???? i have the step down transformer rating 230/12v, power rating something.,,, ok. suppose iam giving 12v to secondary side,what will happen on primary side.,,,

6 Answers   Coastal Energen,

---

we can conformed the vector group of the transformer. How?

0 Answers  

---

how to calculate fuse rating for a motor

1 Answers   JSW,

---

What is the actual calculation for transformer short circuit test?.

0 Answers  

---

Technical equations

1 Answers   ME,

---