Answer / guest

REF protection can be implemented as High Imp or Low imp.
In high imp scheme, the CT ratios needs to be same but in
low the CT ratios may be different. Same is for the
differential protection. If the CT ratios are same the high
imp scheme can be implemneted as in busbar differential
protection.Key advantage of High imp tech is its immunity
to CT saturation . Key adv of low imp is to use CT with
different ratios for differentail / REF schemes.

How to determine stage of Automatic Power factor controlling Relay(Apfcr)?

0 Answers   ABC,

---

how to find value of resistance when 1 kw consumption for 10 minutes

1 Answers   Manipal Hospital,

---

HOW MANY EARTHINGS REQUIRED FOR GENERATER

10 Answers   Juniper Networks,

---

how to calculate the mesh earth network resistance in such substation, is there any recommended resistance values with references , thanks!

0 Answers   SRES,

---

where can i get vijaya electricals limited in hyderabad interview auestions can u give me the website address plz

0 Answers  

---

Can anyone please provide me details of MCCB/Contactor/SFU rating calculations for a motor feeder..for example 50 kw.. not from type-2 cordination chart. i want manual calculations..

0 Answers  

---

HOW to speed control of induction mototr using scalar control

3 Answers  

---

How many percent of power are not being registered if we bypass one side of the meter base terminal using #8 cu wire on 1-phase kwhr meter. 

1 Answers  

---

Why is a thicker conductor necessary to carry a current in A.C.as compared to D.C. ?

1 Answers  

---

Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

0 Answers  

---

what is the Excaste meaning of CT Saturation?? 10 P 20, 15 VA, what is the meaning of 10, & 20. if the CT polarrity changed what will happened?? what is the differece between measuring CT & Protection CT?? what is the Saturation Point of measuring CT & Protection CT??

1 Answers  

---

The ohm is the unit of:(a) Charge(b) Resistance(c) Power(d) Current

2 Answers  

---