Answer Posted / kasi

MCBs are miniature circuit breakers with optimum protection
facilities of overcurrent only.These are manufactured for
fault level of up to 10KA only with operating current range
of 0.5 to 63 Amps (the ranges are fixed), single,double and
three pole verson.These are used for smaller loads
-electronic circuits,house wiring etc.
MCCBs are Moulded case Circuit breakers,with protection
facilities of overcurrent, earth fault.it has a variable
range of 50% to 100% operating current.They can be wired for
remote as well as local operation both.They are manufactured
for fault levels of 16KA to 50KA and operating current range
of 25A to 630Amps.They are used for aplication related with
larger power flow requirement.

How grounding is different than earthings?

1117

---

WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

1741

---

What is VSCF windelectrical system?

1826

---

What are the basic component of a cro?

1182

---

why three phase capacitor takes unbalanced current in capacitor bank?

1432

---

What is the difference between alternator and generator?

1249

---

what is the circutor?why we use it ?

2261

---

If you have an earth with pilecap then your resistance is really low. why and how?

1938

---

What are the basic & Majour problems in UPS ?

2071

---

How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

1894

---

what is Fan Control Cubicle

2417

---

hr round

2070

---

how many synchronous motor are there in any power plant

1921

---

How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

2041

---

Why does the radius of armature is less than the radius of pole shoe?

2106

---