what is CT class? depending upon which it is classified?

3 Answers   Siemens,

---

Could anyone clarify my wondering. What is the difference between knee point voltage and saturation voltage of the CT. Is their any formula to calculate these values?

2 Answers  

---

Tell me how you are ready to comply with the employment rules and regulations if your CV is considered for employment?

0 Answers  

---

What is the technical difference between On delay timer and a Star delta timer?

0 Answers   Roche,

---

why Batteries & Battery chargers are used in substation? what is the different between UPS & battery charger?

4 Answers   DLF,

---

---

A transformer is used to light a 24volts,70watts lamp from a 240a.c main.The current in the main cable is 0.35A. Calculate, (1) The efficiency of the transformer. (2) the current in the lamp.

1 Answers  

---

Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and D-y in distribution transformer (2 MVA, 11 KV to 440 Volts)?

4 Answers  

---

If single phase voltage level is 230V than why three phase voltage level is not 660V ?, but it is only 440V.

16 Answers   BSNL, DOS, EFS, HMT, L&T, TCS, ThyssenKrupp,

---

What are the basic & Majour problems in UPS ?

0 Answers   Roto Power, RotoPower,

---

what is nuetral grounding

2 Answers  

---

What are the different lines and what are the different types of losses occur on them?

2 Answers  

---

What is difference between Over Current & Earth Fault protection?

0 Answers   ABC,

---