Answer / k.prakashchandra

Over current rating depends on cooling efficiency of the
motor.e.g. A few Coimbatore motors can run at upto even 150
% of rated load continuously.To set the over load
relay,calculate full load current and add 5 or 10% so that
it does not trip on full load.

Answer / dk gnfc

Overcurrent means short ckt in CTMM relay for motor protection, so short ckt settinng alway 700 to 1300% in every 3 phase motor

IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.

0 Answers  

---

Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method

0 Answers   UCC,

---

Does power factor vary with speed?If yes, how?If not, why?

4 Answers   Genco,

---

Whot is the braking capacity for MCCB. How we select different braking capacity.

1 Answers  

---

What is the difference between power cable and signal cable (only Observation Difference)?

1 Answers  

---

Difference between transmission line and cable?when ever a large water channel has to crossed it is easier to use cable then transmission line why?

1 Answers  

---

can we conduct the swineburne's test on a dc series motor? why?

0 Answers  

---

i want to know d working mechanism of tafe tractors next i like to know d engine type of apache bighs can anyone help me

0 Answers  

---

what is intermediate switch

1 Answers  

---

what is tandem isolator ??????????

5 Answers  

---

How to calculate the CFM to TR? What is the Formula

12 Answers   Carrier, Voltas,

---

What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

0 Answers  

---