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.

How to calculate incoming cable size for 33KV, 1MVA transformer.

1 Answers   IAC,

---

What is the method & formula of Fault level calculation in power Transformesr.

3 Answers  

---

Safety measures in air circuit breaker

5 Answers   Megatron Solutions, TCS,

---

What will happen if we give AC supply to DC motor?

4 Answers  

---

What is Phase to Phase clearance for 800V System Operating Voltage as per IEC61439

0 Answers  

---

explain why the secondary terminal of current transformer should not be lift open circuited.

2 Answers  

---

Can Dy11 and Dy1 vector group transformers be paralleled?

1 Answers  

---

what is the saturation point of crgo lamination.

0 Answers  

---

when will cause the negative sequence falut in electrical system?

2 Answers   Schneider,

---

Why double earthing is required ?

1 Answers  

---

design a LV scheme for a 15 storied building?

0 Answers  

---

what is the function of a Master trip relay? why is it used ?

5 Answers   ABB, Nissi Engineering Solution,

---