Answer / sreenu

In case of MCB, Magnetic & Thermal settings are fixed. In
case of MCCB, Magnetic & thermal settings can be varied.

Answer / engr. md. zainal abedin peng

MCB means miniature Circuit Breaker.
MCCB MEANS mOLDED Case Circuit Breaker.

Answer / rajendran m

MCB used to upto 63A, But MCCB to be use to More than 63A.

if two transformers are parallel & both have fault short ckt. impedance of 50KA in each case will it increase or decrease show example?

1 Answers  

---

what is basically a pulse transformer?

1 Answers  

---

length of 4 core cable 95mm from substation LV VFD panel to Motor at field approximately 150 meter. Motor stop and power has been isolated from LV MCC ( Substation )to disconnect Motor for services. After Motor completed service propose to reinstall and reconnect Motor Cable, found earth cable sparkling during touching at metal / motor body. Inspect by clamp meter found earth cable have current flow AC 1-2amps and all earth cable at MCC LV also have current flow as same value. why it is happen?

2 Answers  

---

How much earthing frequency is capable?

0 Answers  

---

What is generator

1 Answers   Mytrah Energy,

---

why cant we use earth as neutral at home whereas neutral is actually grounded at transformer end?

4 Answers  

---

What is reverse power relay?

0 Answers  

---

the voltage per turn of a primary winding of a transformer is the same as the voltage per turn of the secondary winding of the transformer. why?

8 Answers  

---

What happens if the series current double?

0 Answers  

---

HOW TO FIND THE PRIMARY AND SECONDARY OF TRANSFORMER(IN OFF CONDITION) USING MULTIMETER? IS IT POSSIBLE FIND BY SEEING RESISTANCE???

4 Answers   Areva,

---

why transformer fuse wire is very thin as compared to home fuse wire while voltage lavel is low

1 Answers  

---

Why iron core transformers not used in high frequency applications ?

3 Answers  

---