Answer / abhishek

OHB circuit-breakers are gas insulated circuit-breakers for outdoor installation. They are used in power distribution for controlling and protecting lines, substations, transformers, rectifier units, capacitor banks, etc. Thanks to the autopuffer breaking technique, they do not generate operating overvoltages. This means they are also highly suitable for retrofitting, where the plant insulating materials may be sensitive to dielectric stresses.

160 kw motor running use 2R* 150 SQ mm cable

0 Answers   ID,

---

what is relation of rpm with Power supply? rpm directly Proposational to power ?

2 Answers  

---

why we ht line cable size small rather than lt cable.

4 Answers   Aster Teleservices,

---

what will happen if i connect the buchholz relay in reverse direction.

1 Answers   MAN,

---

What is the use of mc( moving coil) in dc voltmeter and dc ammter and what is the use of ( moving iron)in ac voltmeter nd ac ammeter

0 Answers   HCL,

---

---

1.why motor rating in kw instead of KVA? 2.why alternators rating in KVA instead of KW?. 3.why transformer rating in KVA instead of KW?.

6 Answers  

---

what is meant by fuzzy logic? what is fuzzification and defuzzification?

5 Answers   MEIL, Power Grid,

---

why delta delta connection generally not use in transformer

4 Answers   Lanco,

---

what does happen if generator frequency fall in running condition & what should require immediately

4 Answers  

---

Why Indian Electricity frequency desined 50 Cycles as developed countrys are using high frequency with low voltage

1 Answers  

---

Why are the cores of large transformers built up of circular transactions ?

0 Answers  

---

Why is copper a better conductor of electricity than aluminium?

5 Answers   AES,

---