Answer / omar aziz

Resistive or high impedance earthing is classified as IT
system in IEC standards. It is employed where there is a
need to limit the earth fault current to minimium levels.

Primary this id the grounding techinique used in coal
minning where high earth fault currents can lead to
catastrophic fires.
I hope this helps. If yourequire further info there is a
good technical paper on schnider website,

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

0 Answers  

---

Explain M Var? Which types of problem occurs when reactive power increase at the time of full load of plant and at the time of synchronize of plant?

0 Answers  

---

Generally the incandescent lamps in bathrooms fuse due to high voltage at night.What is the simple solution of this problem?

4 Answers  

---

working

1 Answers  

---

star delta starter contorl circuit... drawing..

0 Answers  

---

what is the difference beteen differential protection and over current protection of an alternator

2 Answers   GVK,

---

what is the resistance value of earthing pit and why they are connected?

6 Answers  

---

What is a transductor ?

2 Answers  

---

What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?

0 Answers   K-Electric Limited,

---

what is the voltage between earth & neutral in 3 phase electrical connection.

0 Answers   Megatron Solutions, SIPL,

---

1. What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV?

3 Answers   BCPL,

---

How can I calculate ISF of current transformer?

0 Answers   Cigniti Technologies,

---