Answer / sunil ulange

There are 2 types of CT's
1. Measuring purpose CT - Class 0.2, 0.1
2. protection Purpose CT- class PS, 5p10, 5P20

Class 0.2 - 0.2 Accurcy for meters.
Class PS- means Protection Purpose relays, breakers etc.
Class 5P10 - means 5% accuracy, P -protection, carry 10
times normal current

any Substation related questions ask me @ sunil_031@yahoo.com
Sunil Ulange
Project Engineer
Greenesol power Systems bangalore

Answer / ahamar

5P is a protection class of current transformer.CT,s are of
three types,for current measuring,for protection and
special protectin class.

Answer / amin

Explain the Term in CT Name Plate – Class: 0.2fs5
FS ?

how we arrange the hv side with delta connection in case 33/11kv of transformer.

0 Answers   Jindal,

---

What quedtion to ask a electrical maintenance technician?

5 Answers   Bhel, Royal Furnishers,

---

CFL lamp is what type of load?

6 Answers  

---

How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

0 Answers   Reliance,

---

What is your favorite aspect of the engineering field?

1 Answers  

---

---

Between Turbo alternator and Hydro alternator which one is more difficult to cool and why?

2 Answers  

---

How can we calculate C10 rating of a bttery from c5 or c20 ratings??

1 Answers   Intel,

---

Can i replace Earth leakage relay to the faulty Earth Faulty Relay

0 Answers  

---

how do i calculate voltage drop-if length is 1000 meter,amps is 160a

1 Answers  

---

Hi How can you start-up the 40w tube lite with 230v AC/DC without using any choke/Coil.

5 Answers  

---

for 12KW motor which cable size has to select for ex.10 meter.

4 Answers  

---

how to set relay setting? and example calculation...

0 Answers   JSW,

---