Answer / pillay

As the name imply over current means over loading which can
be for a very short time like when switching on a heavy load
or just overloaded slightly by 10 or 20 %.

Short circuit faults are usually of high magnitude when
there is a fault like cable fault or equipment fault.

Answer / girish

over current zone lies between 100 to 400 times the machine
rated current,
but short circuit current zone lies above 400 times and may
extend upto 2000 times the normal rated current

Answer / mahesh katakdhond

overcurrent means just harm equipment slowaly (20to50percent greater than actual current)

shortcicuit means harm suddenly on equipment(it will some multipal value to actual current(4,5,6,7,....*actual current)

our company have 750 kva oil transformer.still we have facing a problem that is when voltage is 11.5 kv coming from HT side then LT-side voltage is 420v or above at tape 1.please give me best solution to decrease the voltage.

3 Answers  

---

What is the working of AVR in AC generators?

13 Answers   Navrachana University,

---

what do u mean by PS-0.2-5P class of Ct

3 Answers   ABB,

---

how to calculate the capacity of the AC motor

1 Answers   TATA,

---

How to specific gravity of battery will check, i didnt saw any hydrometer. & say me how to dip into the battery what are the specifications are given in the hydrometer?

1 Answers  

---

What are the different auxiliary protections of a transformer?

1 Answers   CESC,

---

some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

0 Answers  

---

why corona loss is less with negative polarity?

3 Answers  

---

what is an rmu?its circuit diagram.functions

14 Answers   CP Bangladesh, Emrill, NDPL,

---

how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)

0 Answers  

---

Which UPS (inverter) is better and why ? 12 V inverter and 24 V (two 12 V batteries in series) inverter which is better ......... which has the longer backup which has the greater charging time which has the greater discharging time thank you

2 Answers  

---

How capacitor improves pf

0 Answers  

---