Answer / loganath

Motor protection relays are available in the market such as
Areva make MOTPRO, MiCOM P22X, but these relays are costly,
not used for small motors unless application warrants the
same, CT is required to connect with these relays unlike
direct connection for OLR

What is the Difference Between MCCB & ACB & VCB

58 Answers   Absotherm, Delton, Divine, JLL, Jyoti Ltd, Kirloskar, L&T, RPP, Siemens, TCL, TCS, Teekays, YSJ,

---

what is invertor supply and raw powersupply

0 Answers  

---

Is neutral transformer can be called as control transformer?

0 Answers  

---

what is the purpose of neutral grounding resistor (NER) and why?

8 Answers   CBRE, Square Textiles,

---

why distribution transformer are of DY11 type?

4 Answers  

---

why the neutral point in connnection oscillates?

0 Answers   Avalon,

---

In a 3 phase system a neutral exists so that any unbalanced currents can flow through it towards earth.... but a phase demands a particular current as per the load attached to it....then where does the extra current come from the goes in the neutral??....I mean in an unbalanced system a phase demands a current as per its load attached....then where does the unbalanced current come from??

1 Answers  

---

how megger step up the DC voltage

1 Answers   Voltech,

---

how air lock will be removed from generators, how it happens?

1 Answers   ABC Engineering,

---

define IDMT relay?

15 Answers   APGenco, Bhel, L&T, Shriram Finance,

---

Regarding units, for voltage we are denoting Volts as V but in case of current we are not denoting Ampere as A instead as I..Why..? Any technical reason for this..?

1 Answers  

---

what is mean by derating factor?

4 Answers   Essar,

---