Why seal-off bushings are used in IPBD?

Why seal-off bushings are used in IPBD?  
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1 Answer

Answer :

To prevent interchange of air at different temperature and leakage of hydrogen or infiltration of dust into the bus duct. 
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Related questions

Routine maintenance of dry-type transformers should include ______________. A. preventing the entrance of water from broken pipe lines steam lines B. keeping protective surfaces and insulating bushings free of dirt and conductive debris C. periodic testing of insulation resistance with a megger D. all of the above

Description : Routine maintenance of dry-type transformers should include ______________. A. preventing the entrance of water from broken pipe lines steam lines B. keeping protective surfaces and insulating bushings free of ... debris C. periodic testing of insulation resistance with a megger D. all of the above

Last Answer : Answer: D

How bushings are terminated inside the transformers?

Description : How bushings are terminated inside the transformers?

Last Answer : By grooving method or by binding wire method.  

What are the precautions to be taken while terminating the bushings?

Description : What are the precautions to be taken while terminating the bushings?

Last Answer : Contact surfaces with intermediate plates, Mating surfaces should be identical. 

What is the advantage of housing CT’s with in bushings?

Description : What is the advantage of housing CT’s with in bushings? 

Last Answer : Bushing acts as a primary insulator for the CT.  

What are the tests to be carried during PM checks of IPBD?

Description : What are the tests to be carried during PM checks of IPBD?  

Last Answer : a) Physical inspection of bus for any spark or overheating or discoloration. b) Physical inspection of copper braided flexibles for discoloration. c) Physical inspection of inspection window gaskets, seal off ... Tan-delta test of IPBD m) IR value measurement n) Cleanliness checks entire IPBD. 

What are the torque settings used in IPBD connection?

Description : What are the torque settings used in IPBD connection?

Last Answer : M12 (Nut bolt) 4506 100 kg-cm or 55 NM M16 (Nut bolt) 9006 250 kg-cm or 80 NM M20 (Nut bolt) 18006300 kg-cm or 100 NM 

What are the isolations required for working on IPBD/ Generator?

Description : What are the isolations required for working on IPBD/ Generator?

Last Answer : a. Generator field breaker open and tagged. b. GT breaker open and earth switch closed.  c. Barring gear motor stopped and tagged. d. Generator PT's isolated and tagged. e. CB 472 and CB 474 open ... 's are isolated and tagged. f. Before doing any work on brush gear 64F1 relay to be taken out. 

What is the protection for IPBD?

Description : What is the protection for IPBD? 

Last Answer : Generator – GT overall differential protection.  

What is use of hot air blower in IPBD?

Description : What is use of hot air blower in IPBD?

Last Answer : To remove moisture and to prevent moisture condensation inside the duct at commissioning time or in long shutdown periods. 

Why aluminium bus bars are silver-plated in IPBD?

Description : Why aluminium bus bars are silver-plated in IPBD?

Last Answer : Aluminium bus bars are silver-plated at flexible connection to prevent the galvanic corrosion ant also for low contact resistance. 

Why neoprene rubber bellows are used in IPBD?

Description : Why neoprene rubber bellows are used in IPBD?

Last Answer : Neoprene rubber bellows are used near the terminals of the equipment and also at building wall from indoor to outdoor area to allow thermal expansion and to minimise vibrations. 

What are the salient features of IPBD?

Description : What are the salient features of IPBD?  

Last Answer : a. This for a vital link between generator, GT, UAT, SPPT, SET and neutral grounding transformer. b. The continuous enclosure operating at ground potential limits the leakage flux outside the enclosure ... maintenance is nil. j. Separate parts erected IPBD. Hence changing parts makes it easy. 

Why flexible expansion joints are used in IPBD?

Description : Why flexible expansion joints are used in IPBD?

Last Answer : To cater thermal expansion and contraction due to heating and to eliminate mechanical vibrations to the equipment. 

What is type of nut and bolts are used in IPBD?

Description : What is type of nut and bolts are used in IPBD?  

Last Answer : Non-magnetic stainless steel nut and bolts are used in IPBD to restrict magnetic effect at joints.  

Why neoprene rubber bellows in generator IPBD?

Description : Why neoprene rubber bellows in generator IPBD?

Last Answer : Prevent vibrations transmitted from generator to IPBD.  

D. Loading of the transformers not i76 The changes in volume of transformer cooling oil due to variation of atmospeheric temperature during day and night is taken care of by which part of transformer? A. Conservator B. Breather C. Bushings D. Buchholz relay

Description : 76 The changes in volume of transformer cooling oil due to variation of atmospeheric temperature during day and night is taken care of by which part of transformer? A. Conservator B. Breather C. Bushings D. Buchholz relay

Last Answer : A. Conservator

The Guide to Bushings

Description : The Guide to Bushings

Last Answer : Mechanical bushings are removable cylinders or donut-shaped items, designed as lining, insulation or sleeves to reduce friction on a machine's moving parts. They're also used to ensure a tighter fit to constrict ... how to replace a car's clutch and as a bonus, read how to install training wheels.

Select insulating materials for following parts : (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

Description : Select insulating materials for following parts : (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

Last Answer : Parts Insulating Materials  Insulation between heating element and base plate of electric iron. Mica Insulation used over copper or aluminium conductor used for making coils.  ... Transformer bushings Porcelain  Insulation between transmission line and pole. Porcelain

What is the necessity of Seal oil system?

Description : What is the necessity of Seal oil system?

Last Answer : The annular gap between stator and rotor of the generator are to be sealed to prevent hydrogen leak from the casing. Type of seal – ring type shaft seals Pressure of seal oil – 4 kg/cm2

How special current limiting resistance is connected with the seal in contact?

Description : How special current limiting resistance is connected with the seal in contact?

Last Answer : Special current limiting resistance is connected in series with the seal in contact.  

How seal oil pressure is maintained?

Description : How seal oil pressure is maintained?

Last Answer : Differential pressure regulator maintains the seal oil pressure at 0.7 kg / cm2 higher than H2 pressure. 

What is function of seal oil system?

Description : What is function of seal oil system?

Last Answer : Seal oil prevents the leakage of hydrogen from the generator casing to the atmosphere, where it can form explosive mixture. Seal oil is at higher pressure than hydrogen.

“A slumber did my spirit seal”, says the poet. That is, a deep sleep ‘closed off’ his soul (or mind). How does the poet react to his loved one’s death? -English 9th

Description : “A slumber did my spirit seal”, says the poet. That is, a deep sleep ‘closed off’ his soul (or mind). How does the poet react to his loved one’s death? -English 9th

Last Answer : The poet is shocked and surprised at the death of his loved one. It feels painful. Death does not make anyone feel good. It is always associated with misery.

How would you permanently kill and seal a volcano, using current science but with unlimited resources at your disposal?

Description : How would you permanently kill and seal a volcano, using current science but with unlimited resources at your disposal?

Last Answer : You could drop a mega mega ton hydrogen bomb down it’s throat but I don’t think it would be possible since you are dealing with a weak spot in the Earth’s crust. (You know, the old “Irresistible force meets immovable object” thing.)

When was the last time you blew a seal?

Description : When was the last time you blew a seal?

Last Answer : Wat?

Why do you think the lady in this video never pet the seal?

Description : Why do you think the lady in this video never pet the seal?

Last Answer : Sealaphobia maybe?

Rough siding raw wood, seal first or prime?

Description : Rough siding raw wood, seal first or prime?

Last Answer : What kind of wood is it? That would make a differnce to me. I might want to see the grain so a sealer would be better. But if you don’t care about seeing it primer and then paint it.

Why was it Seal Team 6 that went after Bin Laden?

Description : Why was it Seal Team 6 that went after Bin Laden?

Last Answer : Just looked it up on wiki . When the group was founded, they chose the name Seal Team 6 in order to confuse Soviet Intelligence as to how many Seal Teams were actually in existence (at that point ... made of up many platoons whereas ST6 was much smaller and pulled from the best of those platoons).

Leaking rear main seal. More info wanted?

Description : Leaking rear main seal. More info wanted?

Last Answer : What kind of car?

Right product to use to seal a leaky concrete water feature?

Description : Right product to use to seal a leaky concrete water feature?

Last Answer : You really need a pro to replace some gunnite and patch the plaster if you want it done right. My guess is that it will be between $200—$500 depending on how big the crack is.

How do I know if I got a good seal?

Description : How do I know if I got a good seal?

Last Answer : Are the lids slightly concave?

What happens physiologically during the 'breaking the seal' phenomenon?

Description : What happens physiologically during the 'breaking the seal' phenomenon?

Last Answer : I would love to know the answer to this. Also: Why does it seem to happen with alcohol and water, but not soda (I drink Sprite Zero, so no caffeine or sugar)? At least, that’s my experience.

Do you agree with the FBI's order to Wikipedia to remove the FBI seal?

Description : Do you agree with the FBI's order to Wikipedia to remove the FBI seal?

Last Answer : answer:I don't care who owns the seal. What I want to tell the FBI is to be more concerned with coordinating information with other federal agencies to keep me safe. Crap still falls through ... about steroids in baseball while we have other major issues in this country to worry about. Rant over.

Anyone have experience with family or yourself being a Navy SEAL?

Description : Anyone have experience with family or yourself being a Navy SEAL?

Last Answer : You can't enlist in the SEALs. You enlist in the Navy and then try to pass selection as a SEAL candidate. If you make it, you're in for some of the toughest training in the world. If you wash out, ... job. I'm retired Army, but my father had SEAL units in his command, so I know how the drill works.

The safety seal on my frappuchino bottle didn't "pop"; should I drink it?

Description : The safety seal on my frappuchino bottle didn't "pop"; should I drink it?

Last Answer : I’d drink it. Sent it to me.

When the seal inside the toilet basin incompletely seals, and water slowly drains out, do you need to replace the entire internal mechanism?

Description : When the seal inside the toilet basin incompletely seals, and water slowly drains out, do you need to replace the entire internal mechanism?

Last Answer : I’ve always just replaced the entire assembly. My thinking is that since the gasket has gone, chances are the arm holding the chain will probably go soon too. Lord knows, that’s happened to me often enough.

What to use to seal a wood carving?

Description : What to use to seal a wood carving?

Last Answer : You could oil the wood or use a polyurethane.I have used both on wood carvings I’ve done and acrylic paint for a bird carved from bassood.I do know someone that uses mineral oil and tung oil.I hope this helps :)

Can you tell me what to use to "seal" the weep holes on my house?

Description : Can you tell me what to use to "seal" the weep holes on my house?

Last Answer : Could you find an old screen (sometimes you can buy it on the roll by the sqft) and cut it to size? Cut it a bit bigger and use removeable caulk to adhere it to the hole perhaps.

Who's the brunette in the new crest white strips advance seal commercial?

Description : Who's the brunette in the new crest white strips advance seal commercial?

Last Answer : Bridgette Wilson-Sampras

How can we stop seal hunting?

Description : How can we stop seal hunting?

Last Answer : Kill all the Seal’s, can’t hunt them then! I don’t mean that, I can’t be serious for a moment. SORRY.

what color is a seal point in cats

Description : when you mean a seal point in a siamese cat does that mean lighter brown or chocolate on the coat.

Last Answer : The seal point Siamese cat has dark brown points. The points include the face, ears, tail and paws. The body of the cat is ivory or pale tan. Chocolate point Siamese are exactly that, the color of chocolate, lighter than the seal point.

Should I seal the small limbs cut from the trunk of a Honey Locust tree?

Description : Should I seal the small limbs cut from the trunk of a Honey Locust tree?

Last Answer : Need Answer

why my golden seal plant is growing brown spots?

Description : why my golden seal plant is growing brown spots?

Last Answer : Need Answer

Give a brief analysis of the poem ‘A Slumber Did My Spirit Seal’ in your own words. -English 9th

Description : Give a brief analysis of the poem ‘A Slumber Did My Spirit Seal’ in your own words. -English 9th

Last Answer : In the poem ‘A Slumber Did My Spirit Seal’ the poet describes his beloved after her death. In the first stanza, the poet says that the death of his beloved made him very depressed. He ... can she see any thing. She is trapped under the earth and revolves with rocks, stones and trees.

What was the primary purpose of a seal in the Indus Valley Civilisation? -Do You Know?

Description : What was the primary purpose of a seal in the Indus Valley Civilisation? -Do You Know?

Last Answer : answer:

Which God with three heads and horns, surrounded by animals, represented on a seal from Mohenjodaro? -Do You Know?

Description : Which God with three heads and horns, surrounded by animals, represented on a seal from Mohenjodaro? -Do You Know?

Last Answer : answer:

What do you call a seal that can't see?

Description : What do you call a seal that can't see?

Last Answer : L.

How long do you not eat after a new seal

Description : How long do you not want the new seal to fall out?

Last Answer : Just don't eat for an hour. Then everything should be fine

It's called a seal or blomba

Description : When I go to the dentist I don't always know what to say. Seal or blob?

Last Answer : Seal! The bomb is wrong!

Will chewing gum replace the seal?

Description : I lost the seal but I'm afraid of the dentist. Can I put bubble gum in the tooth hole instead of the seal? I don't bite on that side. Cenda

Last Answer : I would like to see you grind the hinge on one side! And you weren't afraid of that before the doctor gave you a seal? Poseroutko! (no offense)