Answer / karthik

MC61 relay is an IDMT Over current+Earth fault relay.It is a
product of L&T company.
there are many models in them namely,
1)MC61C
2)MC61A
etc

Answer / praveen

3 Phase O/C + E/F + Highset
0C 0
50/51 RYBN
Numerical Relay
Lowset O/C -Is
Highset O/C -Ihs
Lowset E/F -Os
Highset E/F -Ohs
O/C Is = 20-200% Step 5%
E/F Os = 5-80% Step 5%
HS O/C = (0.2 to 40) x In step of -
0.2 In or disable
HS E/F = (0.1 to 20) x On step of -
0.1 On or disable
Time Characteristics available -
NI, VI, EI, or Definite Time
TMS : 0.1 - 1.6 Step 0.05
Site selectable Trip time Char.
Highset can be disabled
Display of Currents, Trip count
Self supervision feature
£ 0.25 VA on CT/Phase
Not applicable
0 to 60 C
< 2kg £ 10 VA
1 N/O Contact for self suprvn
Draw out
121 x 158 x 224
113 x 142
20-110V AC / DC or
88-264V AC / DC
1 AMP or 5 AMP
(site selectable)
4NO or 2NO + 2NC

What is superposition theorem?

0 Answers  

---

How to connect the earthing in aircraft?

1 Answers  

---

why in crona effect it give violet colour.

1 Answers  

---

Practical applications of series connected resistances? 

1 Answers  

---

what is meant by mimic diagram ?where it is used ?plz explain briefly

2 Answers  

---

How to calculate HV Cable Sizing & what are the factors to be considered for selection?.

2 Answers  

---

how to make parrallal ups

1 Answers  

---

what are the ''pitting rings''and how cn they be controlled in a series generator

0 Answers  

---

how does this job compare with others you have aplied for?

0 Answers  

---

what is working process of star delta controlling circuit ?

0 Answers  

---

Which contains in POLE ASSEMBLY of a 11KV Kirloskar-make SF6 (Model No-FP620A12)? Will u clarify with drawing?

0 Answers   Kirloskar,

---

What is the inside of ACB & VCB & SF6 breaker's pls tell me about this

2 Answers   Standard Chartered,

---