Answer Posted / dipak

ct secondary current is always 1 or 5 amp . i think 1 amp where the current path is short and less relay are installed. and where the current path is long it is 5 amp to avoid loading.

why we use 630mm single core cable for transformer secondary side and why two neutral cable

1897

---

Define cuttoff frequency?

1134

---

what types of cable used in underground coal mining?

1533

---

Discuss about gear cutting machines.

1261

---

What is the Resposiblity of Electrical Utility Engineer

2992

---

what are the protecyion of transformer & generators

2032

---

Dear friends I want to design busbar for1600 kva transformer(i.e2100 amps) what are all the factors to be considered before selectinga busbar what are all the standard sizes of busbars what is the formula for finding current of copper and aluminium busbar

1958

---

A TRANSFORMER 440/400V,DELTA/STAR CONNECTED.THE NEUTRAL CONNECTED WITH GROUND CABLE THAT IS DIRECTLY CONNECTED TO THE PANEL,FROM PANEL IT IS CONNECTED EARTH PIT.IS IT RIGHT? IF IT IS RIGHT LEAKAGE CURRENT AFFECTED.SECONDATY IS PROTECTED WITH EARTH LEAKAGE RELAY.

2177

---

Cables Construction hi friends, 0.6/1/1.2 kV LV , DC and Control cables are concentric copper conductor what does its means and what is the use of concentric copper conductor,and are this with copper tape shield or copper screening, ? thanks

1813

---

what are the factors to be considered while design the breaker either HT or LT??

1979

---

What is the maximum number of swithes that can be connected in series up to down stream point in an LV Distribution system?

2063

---

CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

5714

---

Draw torque - speed curve and load curve of induction motor? mark operating point ?

2122

---

george phenomenon of synchronous machine

7611

---

how did the testing of protection relays done through current injection

2146

---