Answer / k.prakashchandra

Potential free means 'zero potential' ,not connected to any
power supply

Answer / vels

potential contacts means the contacts are connected with some potential we cannot use our the contacts
whereas potential free contacts means it is not connected with any potential we can connect/use as per our requirement

Is it true that IPT are more accurate than CVT for Measuring purpose?

2 Answers  

---

Can I use RCCB in moisture control device in a submersible pump.

2 Answers   TATA,

---

What is meant by IP55 motor.Where it is used?

2 Answers   Zuari,

---

how to identify small motor and generator?

1 Answers  

---

how to calculate the bus bar current rating

2 Answers  

---

1.why we are using blocks in withoutgaplightning arrester 2.why we ar using bushing in withoutgap lightning arrestor

0 Answers  

---

What are various accuracy classes of CT(Current Transformer)

1 Answers  

---

what is buffer resistance starter.?.What is the working principle and where it is used..?

0 Answers  

---

A motor works on 30 killo watts.how much ampers will be required if it works on 440volts?

5 Answers  

---

What is the RMS Value. Please discribe in detail

14 Answers   Bhel,

---

whate is aelectrical power fector for exampal

8 Answers  

---

If a contactor need to replace with faulty one. what I want to check?

2 Answers   Bhel,

---