Answer / neoveyron

CTUM 15 is a alstom make electromechanical relay used for the Sensitive earth fault protection for feeders by means of a CBCT. These operate on the principle of leakage current measurement by means of a residual connection of CT or a CBCT. These can be set for 1% to 16 % of CT ratings. The time dial settings can be set from 60 milliseconds to 750 miliseconds. These provide protection against high resistance ground faults on an earthed system.

what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

1 Answers  

---

How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.

1 Answers  

---

Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?

1 Answers  

---

What is the difference between IGBT and TRIAC?

3 Answers  

---

What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

2 Answers  

---

What are the functions of different probes used in cro?

1 Answers  

---

What is GNR ? How much value of ground neutral resistance?

9 Answers  

---

why the supply power frequency is 50hz in india? where as it is 60hz in US?

4 Answers  

---

What is application of MCB & How it works

1 Answers   TATA,

---

why power factor occur only inductive load not in resistive ?

8 Answers  

---

How can we find the breaking capacity of a Load breaker switch (LBS) fed from 11 kv supply??ex:50KA, 26kA etc???detailed step vice answer pls.

1 Answers  

---

Why the Motor takes High Current in Starting time?

5 Answers  

---