Answer / rajendran.m

660KV/440KV/220KV/110KV/66KV/33KV/22KV/11KV/440V.

Two typs of substations.
1. Indoor substation
2. outdoor substation

Answer / raj kumar hora

600kv/400kv/220kv/132kv/33kv/11kv/6.6kv/415v

2 types of sub-station
a.outdoor type
b.indoor type,upto 33kv only.

Answer / tarun aggarwak ymca

765kV, 400kV,220kV,132kV , 66kV,33kV,11kV
The substations can be classified in several ways including the
following:
i) Classification based on voltage levels e.g.:
AC Substation: EHV, HV, MV), LV;
HVDC substation
ii) Classification-outdoor or indoor.
Outdoor substation is under open sky. Indoor substation is
inside a building.
iii) Classification based on configuration, e.g.:
a) Conventional air insulated outdoor substation or
b) SF6 Gas Insulated Substation (GIS)
c) Composite substations having combination of the above two.
iv) Classification based on application.
a) Distribution substation
b) Switchyard in Generating Station
c) Switching substation (without power transformers)
d) Sending-end substation
e) Receiving substation
f) Factory substation
g) Compensating substation e.g. having static var compensation etc.
h) Load substation, e.g. arc-furnace substation.

Answer / pillay

It is a 5 MVA 11KV/433 VOLT INDOOR SUBSTATION.
A) Indoor substation
B) Outdoor substation
C) Compact substation

Answer / sachin

1)- generating
2)- transmission
3)- distribution

what are the losses of capacitor??

1 Answers  

---

To prevent the mal operation of a differentially connected relay while energizing a transformer, the relay restraining coil is baised with (a)second harmonic current (b)fifth harmonic current (c)third harmonic current (d)seventh harmonic current

2 Answers  

---

If ac voltage applied to the field of dc generrator the output of dc generator ?

1 Answers   SSC,

---

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1 Answers  

---

what are factors comes under relay setting (distance relay 7sa52) under OPEN DELTA VTs connection??

0 Answers  

---

---

HOW DO WE COLLECT THE SOLAR ENERGY AND DESCRIBE THE METHODS TO CONVERT THE SOLAR ENERGY INTO ELECTRICAL ENERGY?

1 Answers  

---

what happen if the battery is charged by more than one source ,for ex: connecting data cable to laptop & charger pin to source supply ? 

2 Answers  

---

What is meant by regenerative braking?

5 Answers  

---

what is synchronizing panel & its working.

3 Answers  

---

What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.

0 Answers  

---

we have 3.5MVA-11/6KV transformer. how can we calculate earth fault current and NGR calculation?

0 Answers   IGC,

---

what is advantage of using star to delta in place of dol starter

4 Answers  

---