Answer / 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.

Explain what are inter-poles and why they are required in a dc machine.

0 Answers  

---

What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

0 Answers  

---

WHAT TYPE OF DC MOTOR IS USING FOR ELECTRIC TRAIN ?HOW ITS FUNCTIONING ?

2 Answers  

---

WHAT IS MOBILE SUB-STATION? & REALLY BENEFIT IN INDIA

0 Answers   BMC,

---

what is inductance function?

3 Answers  

---

how to find motors H.P. whout any rating? (only give you a motor and multimeter)

3 Answers   L&T,

---

1.Is there any difference between terminologies,HT-HV &LT- LV? 2.What is the highest transmission voltage level in india?

5 Answers  

---

What is the difference between ARC & SPARK?

4 Answers   OPTCL,

---

what is the difference between an alternator and a synchronous motor

0 Answers  

---

how many types control panel of a 132/33 kv substation

0 Answers   Alstom,

---

HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com

0 Answers  

---

(1)Electrical power is generated in KV, power consunmed is in MW and the transformers used are in KVA. How is KVA converted to MW as power being consumed by the consumers? (2)What is vector group of a transformer?

1 Answers  

---