Answer / sonam sherpa

when ever a transmission line orequipments is to be
protected by using distance realy or by differential realy
or merz price protection. A wire is connected between the
CT which is located in different ends of the protection
zone.
This wire provide the path for the circulating current
produce in abnormal condition, which is sensed by the realy
and therefore is tripped.

Answer / naseer

when ever a transmission line orequipments is to be
protected by using distance realy or by differential realy
or merz price protection. A wire is connected between the
CT which is located in different ends of the protection
zone.
This wire provide the path for the circulating current
produce in abnormal condition, which is sensed by the realy
and therefore is tripped.

Answer / patra pratap babu

en ever a transmission line orequipments is to be
protected by using distance realy or by differential realy
or merz price protection. A wire is connected between the
CT which is located in different ends of the protection
zone.
This wire provide the path for the circulating current
produce in abnormal condition, which is sensed by the realy
and therefore is tripped

Answer / shital kahandal

Pilot wire it is the wire which are use for secondrys ct connection of two side of xemr and it provide path for circulating current in fault condition

Answer / mahi

It's connaction only use in transmission line and primary distribution for protection purpose only ...
If any earth fault in system it's can't reached in whole powersystem or alternator coz alternator also start connected and earth

Answer / bongani seiso

Pilot wire is a communication cable between DC and primary substation,a communication cable between two relays.

Answer / ravi

Pilot wire:-

Panel heaters equipped with a pilot wire are unique in that
in addition to having two wires for voltage supply (live
and neutral), they have a third wire. This third
wire is called the pilot wire and is capable of receiving
signals from the controller, which alter the temperature
settings.

Answer / sande james

A pilot wire is a strong cable used to guide weaker , easily damaged conductors during stringing of of a transmission line

Answer / sri

Pilot wire is actually a line which is connected between
transmission lines.
The use of pilot wire is that it functions as a earthing
protection during lightening. also, it can be used as a
communication line.

How many types of Transformers are there?

8 Answers  

I hv a question regarding power factor improvement just after transformer. I request you to reply me plzz. thank you sir. My friend has a small unit of fabrication. in his factory the main load is a welding machine, lathe machine, grinding machine. this load is not continuous type. now our electricity board has installed 16 KVA, 11000/433 V transformer for our factory. In the energy meter (trivector meter) at LV side of transformer, i hv seen power factor value of 0.15 only when only 3 KW load was flowing. Further electricity board has suggested to install 4 KVAR capacitor at LV side after energy meter. Now my question is that if we permanantly install and switch on 4 KVAR capacitor after energy meter, during some load on transformer and also without any load on transformer, wht will be the power factor shown in energy meter?i dont want to get any penalty by electricity board, so plz suggest me if i can permanantly install and switch on the 4 kvar capacitor or not at LV side of transformer just after energy meter? Thank you again and awaiting for ur positive reply soon.

9 Answers  

What is mean CT Saturation? How to calculate?

3 Answers   NetGroup, Tyco,

Explain what is rated speed?

0 Answers  

Why ct secondary is not kept open while primary charged. Answer in terms of ct parameters.

4 Answers   Power Grid,

For 6600/433 distribution transformer we apply secondary side 433 volts how much voltage in primary side.

2 Answers  

If the generator will not synchronize, what will you do?

3 Answers  

Explain cmrr?

0 Answers  

how to calculate kA rating of device?

3 Answers   Siemens, Vijai Electricals,

why our power production in multiple of 11, in strictlly asking why our o/p voltage of alternators is 11kv only and whynot graterthan 15 and016KV?

4 Answers  

mcb kitna type ka hata hai aur uska pura naam please bataye

2 Answers  

How REF protects transformer alone? explain with diagram.

0 Answers