draw a circuit diagram connecting transformer OLTC- RTCC-
VCB-Marshalling Box otherwise Explain in words
- 1 Answers
- 22136 Views
- I also Faced
- E-Mail Answers
Answer Posted / alleysyed
OLTC stands for On Load Tap Changer, which means that a user
can change the taps of transformer winding without
disconnecting the transfomrer from the supply. Taps are
changed in order to regulate the voltage. OLTC has number of
taps . They may be 10, 11, 16 , 20 or the customer specified
rating.
Marshalling box is a box in which manufacturer of
transformer bring alarm and trip contacts signalling from
the accessories associated with the transformer. For
example, Oil temperature indicator installed on the T/F
provide a signal of alarm when the temperature of oil
exceeds the specified limit of Indicator. If temperature
exceeds more, it send the trip signal to Marshalling box,
which disconnects the transformer from main supply and
vacuum Circuit Breaker is tripped. VCB is installed on the
High Voltage side of the TF in the HV Protection panel.
| Is This Answer Correct ? | 31 Yes | 5 No |
Post New Answer View All Answers
What is Negative Potential Bias
what is smart grid? why we use it? explain in detals bcoz i want give presentatin from it....
What is the reason behind current flow(20 A) in amain earth cable of an SMDB? Is cuurent flow(45A etc) through a neutral cable acceptable?
What is depreciation factor?
please send me RRB electrical engineer previous year questions for Sr. Section Engineer
Is a direct shorth ciruit on a branch MCCB in a Low Voltage Switchboard a correct means of tesing the performance for discrimination?
hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.
What is inrush current? how can calculateit? what is the affect of it?
Why the moulded plug comes with domestic appliances instead of assembled plug like anchor, Vinay 5/15 A.
What are the functions of temperature scanner in power transformer?
i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?
HOW WE KNOW IN PHYSICALLY THE CONTACT SURFACE OF A VACUUM INTERRUPTER IS GOOD OR GOING TO DAMAGE IN A VCB AFTER ABOVE 500 TIMES OPERATED.
What will happened if the neutral of the (star connected secondry) Xformer disconnected? (if its Above KVA rated one)
for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?
How to calculate impedance volt in Transformer?
