Answer / pappu meena

Jel earthing should be done in rock/hill areas.

Answer / munish sharma

In Rocky Area the soil resistivity comes out to be very
high.The overall grounging structure is based on following
criteria
1.Area Of the Switchyard
2.Surface Layer Resistivity
3.Soil Structure
4.Safety PArameters
5.Fault Current Distribution
There Are Certain Techniques in case of HIgh Soil
Resistivity as
1.Deep Groung well Earthing
2.If area is limited of the Switchyard,use Remote grid
along with main grid buried in low resistivity material
3. Soil Treatment
4. Use Grounging rods to take effect of deeoer low
resistivity layers

Answer / amit

Strip type earthing is best in Rocky soil earth

Answer / leturtle

Totally depends on your application. Is the ground 'solid'
rock or fragmented mixed in with other material?

What kind of rock? Limestone, granite, mudstone, sandstone?

Depending on the type of rock will determine what solution
will best fit.

Is there any top soil on the surface?

Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?

0 Answers  

---

why we use lamination or layer by layer cor used?

4 Answers  

---

3phase motor 400v (induction) A.C 4kw company design 1400rpm but our requirement 2000rpm possible? attached any instrument. reply fast! contact 03343262442

3 Answers  

---

Which type of DG need Netral Earthing?

1 Answers   Hyundai,

---

What are the protections for HT Motors?

1 Answers   BARC,

---

what is the healthy specific gravity of lead acid battery used in DG sets ?

3 Answers   Bhushan Power Steel,

---

why lightining is not available in swith yards?

1 Answers  

---

dear sir, How i calculate the 2 phase welding transformer power or kva?? kindly tell me....

2 Answers   Gedco,

---

How many types of interlocking use in screw type air compressor,make-Kaser(BSD MODEL)?

0 Answers   Automobile, Siddhi Vinayak,

---

why we generate transmit and distribute electrical supply in multiple of 11

6 Answers   NHPC,

---

What is the meaning of CT 400-200/1-1 A ?

2 Answers   Home,

---

what is VSWR?

1 Answers  

---