Why aluminium bus bars are silver-plated in IPBD?

Why aluminium bus bars are silver-plated in IPBD?
by

1 Answer

Answer :

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

Related questions

What is the design basis of 6.6 kV aluminium bus bars?

Description : What is the design basis of 6.6 kV aluminium bus bars?  

Last Answer : a) Temperature rises not exceed 90 ºC. b) Withstand short ckt stresses. c) Take care of thermal expansion. 

Which of the following methods should be used to dress the face of silver-plated contacts? A. Filing B. Burnishing C. Sanding with 0000 sandpaper D. All of the above are correct.

Description : Which of the following methods should be used to dress the face of silver-plated contacts? A. Filing B. Burnishing C. Sanding with 0000 sandpaper D. All of the above are correct.

Last Answer : Answer: C

Both silver and copper oxidise in air. Then why copper contacts are silver-plated?

Description : Both silver and copper oxidise in air. Then why copper contacts are silver-plated? 

Last Answer : The silver plating avoids the oxidation of copper, especially in outdoors. Silver oxidises very readily. But its oxide is a good electrical conductor but copper oxide produce a film of insulation. 

Can silver-plated flatware be safely washed in a dishwasher?

Description : Can silver-plated flatware be safely washed in a dishwasher?

Last Answer : Yes. I run silver and silver plated utensils etc. through the DW and have never had an issue considering the frequency is not very often.

Are silver plated cables any good?

Description : Are silver plated cables any good?

Last Answer : Yes silver plated cables are actually recommended more over the gold plated ones. A lot of people say that the gold plated ones are a waste of money since you can get the same result or better from the silver plated.

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 seal-off bushings are used in IPBD?

Description : Why seal-off bushings are used in IPBD?  

Last Answer : To prevent interchange of air at different temperature and leakage of hydrogen or infiltration of dust into the bus duct. 

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.  

Multiple grounds have developed and were initialy indicated by the grounddetecting system as one ground. The FIRST step in locating the grounds is to _____________. A. examine the main bus bars for signs of overheating B. eliminate the individual circuits one by one until the ground detecting system no longer indicates any grounds C. change over generators D. check each circuit with a megohmmeter

Description : Multiple grounds have developed and were initialy indicated by the grounddetecting system as one ground. The FIRST step in locating the grounds is to _____________. A. examine the main bus bars ... no longer indicates any grounds C. change over generators D. check each circuit with a megohmmeter

Last Answer : Answer: B

How does increase in steam input of the Alternator connected to infinite bus-bars affect this operation?

Description : How does increase in steam input of the Alternator connected to infinite bus-bars affect this operation?

Last Answer : KW output power of alternator increase with increase in steam input keeping excitation constant.

How does increase in excitation of the Alternator connected to infinite bus-bars affect this operation?

Description : How does increase in excitation of the Alternator connected to infinite bus-bars affect this operation?

Last Answer : Increase in excitation level of the synchronous generator will effectively increase the reactive power supplied by the generator keeping steam input constant.

What is meant by infinite bus-bars?

Description : What is meant by infinite bus-bars?

Last Answer : The source or supply lines with non-variable voltage and frequency are called infinite bus-bars. The source lines are said to have zero source impedance and infinite rotational inertia.

What are the protections provided for 220 kV lines and bus bars?

Description : What are the protections provided for 220 kV lines and bus bars? 

Last Answer : a. Bus bar differential protection. b. Distance protection. c. Over current protection. d. Earth fault protection. 

When mixing electrolyte for a lead-acid storage battery, you should pour the ___________. A. distilled water into the acid in a zinc-plated container B. distilled water into the acid in a glass container C. acid into the distilled water in a zinc-plated container D. acid into distilled water in a glass container

Description : When mixing electrolyte for a lead-acid storage battery, you should pour the ___________. A. distilled water into the acid in a zinc-plated container B. distilled water into the acid in a glass ... into the distilled water in a zinc-plated container D. acid into distilled water in a glass container

Last Answer : Answer: D

Why aluminium bus duct is used?

Description : Why aluminium bus duct is used?

Last Answer : Aluminium is nonmagnetic material. Short circuit forces are less. 

A synchronous generator is feeding power to infinite bus bars at unity power factor. Its excitation is now...

Description : A synchronous generator is feeding power to infinite bus bars at unity power factor. Its excitation is now increased. It will feed (a) The same power but at a leading power factor (b) The same power ... a lagging power factor (c) More power at unity power factor (d) Less power at unity power factor

Last Answer : A synchronous generator is feeding power to infinite bus bars at unity power factor. Its excitation is now increased. It will feed The same power but at a lagging power factor 

Generating capacity connected to the bus bars and ready to take load when switched on is known as ?

Last Answer : Generating capacity connected to the bus bars and ready to take load when switched on is known as spinning reserve.

How durable are gold plated iPhones?

Description : How durable are gold plated iPhones?

Last Answer : Well the rose gold version is evidently susceptible to liquid bromine , so that’s important to know. The end of that video also establishes a size of boulder that they are not resistant to.

will freesia be ok plated outside with winter temps. that can go below 0. degrees

Description : will freesia be ok plated outside with winter temps. that can go below 0. degrees

Last Answer : you probably need to remove the bulb and bring it into a cool, dry place to save it from the winter weather. these are tender bulbs................

What old vintage items are gold-plated or gold filled?

Description : What old vintage items are gold-plated or gold filled?

Last Answer : gggg tttt rrrrrrrr ddddddddddd ssssssssssssss jjjjjjj hh bb i o p i kkkkkkkkk jj hhhhhh ggg u gggggggggg ffffffffffff ddddddddd ... kkkkkkk j uuuuuuu i p o l i j h f d q a e t hh c t ty u h h h h h g gg

When was my Fabrique Nationale Darmes De Guerre Herstal Belique Browning's Patent Depose chrome plated 380 automatic serial number 31864 manufactured?

Description : When was my Fabrique Nationale Darmes De Guerre Herstal Belique Browning's Patent Depose chrome plated 380 automatic serial number 31864 manufactured?

Last Answer : Most FN production records from WW 2 and earlier were lostduring the war.

Will gold plated jewelry stick to magnet?

Description : Will gold plated jewelry stick to magnet?

Last Answer : no

What was known as the plated lizard and weighed from two to five tons?

Description : What was known as the plated lizard and weighed from two to five tons?

Last Answer : What is the answer ?

What is the Value of gold plated copies of coins?

Description : What is the Value of gold plated copies of coins?

Last Answer : There is no value. First they are gold plated and not gold.Second they are copies.

how much is a 23 karat gold plated item worth?

Description : how much is a 23 karat gold plated item worth?

Last Answer : It depends on the size and how much the gold by it's self weighs.

Are chrome plated tire rims the best?

Description : Are chrome plated tire rims the best?

Last Answer : Chrome plated tire rims can rust over time but look great when they are brand new.

Is the Art Of Shaving 3 Blade Razor - Mach3 Classic Black & Nickel-Plated razor good for a teenager just starting to shave?

Description : Is the Art Of Shaving 3 Blade Razor - Mach3 Classic Black & Nickel-Plated razor good for a teenager just starting to shave?

Last Answer : While the Art Of Shaving 3 Blade Razor - Mach3 Classic Black & Nickel-Plated razor is an elegant and durable razor which can accept heads from popular brands of disposable razors the retail price ... just starting to shave a modest disposable razor package will provide a better value for your money.

where can i get something chrome plated?

Description : where can i get something chrome plated?

Last Answer : In Houston TX Speed & Sport Chrome Plating is located at 404 Broadway Phone 713-921-0235

How much is a gold plated Bitcoin worth?

Description : How much is a gold plated Bitcoin worth?

Last Answer : I would like to sale two bit coins. Gold and copper color

How much is a 18k gold plated bracelet worth?

Description : How much is a 18k gold plated bracelet worth?

Last Answer : First thing will comes to our mind about the What is the difference between 18K gold Jewelry and 18K gold Plated jewelry is the price, 18K gold jewelry is much expansive than 18K gold Plated, it usually will ... 18K gold, if your chain necklace weight about 25 grams, then if will cost you 1750- ..

(3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be plated the negative electrode (cathode) or plate in a galvanic couple. Thus a spoon or other object may be connected by a wire to a plate of nickel. The process that occurs on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

Description : (3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be ... on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

Last Answer : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide

In case of Shot Welded Rails the fish plated joint should be avoided on Level Crossings within a distance of --------- from end of level crossing a) 3 meters b) 4 meters c) 5 meters d) 6 meters*

Description : In case of Shot Welded Rails the fish plated joint should be avoided on Level Crossings within a distance of --------- from end of level crossing a) 3 meters b) 4 meters c) 5 meters d) 6 meters*

Last Answer : d) 6 meters*

Fish plated joint shall be avoided in check raisl and on the running rails within--------- from the end of level crossing a) 3 meters* b) 5 meters c) 10 meters d) 12 meters

Description : Fish plated joint shall be avoided in check raisl and on the running rails within--------- from the end of level crossing a) 3 meters* b) 5 meters c) 10 meters d) 12 meters

Last Answer : a) 3 meters*

In silvery paints, the main constituent present is - (1) Aluminium powder (2) Silver powder (3) Lead powder (4) White lead

Description : In silvery paints, the main constituent present is - (1) Aluminium powder (2) Silver powder (3) Lead powder (4) White lead

Last Answer : (1) Aluminium powder Explanation: In silvery paints, the main constituent is aluminium powder.

Which of the following is NOT malleable? (1) Graphite (2) Aluminium (3) Copper (4) Silver

Description : Which of the following is NOT malleable? (1) Graphite (2) Aluminium (3) Copper (4) Silver

Last Answer : (1) Graphite Explanation: Graphite is soft thanks to Van derWalls forces between to sheets of carbon atoms.

The “King of Metals” is : (1) Gold (2) Silver (3) Iron (4) Aluminium

Description : The “King of Metals” is : (1) Gold (2) Silver (3) Iron (4) Aluminium

Last Answer : (1) Gold Explanation: Gold, which is not only the most valuable of metals, but also is without its peer in freedom from alloy, is known as the king of metals. Luxurious, classy and beautiful, gold ... most classic and coveted jewelry metal of all. It is also the oldest precious met-al known to man.

Which of the following metals does NOT react with oxygen even at a high temperature? (1) Aluminium (2) Silver (3) Lead (4) line

Description : Which of the following metals does NOT react with oxygen even at a high temperature? (1) Aluminium (2) Silver (3) Lead (4) line

Last Answer : (2) Silver Explanation: Silver and gold do not react with oxygen even at high temperatures as they are less reactive and are placed below the reactivity series.

Which among the following metals provides amphoteric oxide? (1) Sodium (2) Silver (3) Aluminium (4) Calcium

Description : Which among the following metals provides amphoteric oxide? (1) Sodium (2) Silver (3) Aluminium (4) Calcium

Last Answer : (3) Aluminium Explanation: In chemistry, an amphoteric species is a molecule or ion that can react as an acid as well as a base. Many metals (such as zinc, tin, lead, aluminium, and ... and proteins, which have amine and carboxylic acid groups, and selfionizable compounds such as water and ammonia.

German silver used for making utensils is an alloy of – (1) Copper, silver, nickel (2) Copper, zinc, nickel (3) copper, zinc, aluminium (4) copper, nickel, aluminium

Description : German silver used for making utensils is an alloy of – (1) Copper, silver, nickel (2) Copper, zinc, nickel (3) copper, zinc, aluminium (4) copper, nickel, aluminium

Last Answer : (2) Copper, zinc, nickel Explanation: Nickel silver, also known as German silver, Argentan, new silver, nickel brass, albata, alpacca, or electrum, is a copper alloy with nickel and often ... to its development by 19th-century German metalworkers in imitation of the Chinese alloy known as paktong.

German silver is an alloy of - (1) copper, nickel and silver (2) silver, copper and aluminium (3) zinc, copper and nickel (4) silver, zinc and copper

Description : German silver is an alloy of - (1) copper, nickel and silver (2) silver, copper and aluminium (3) zinc, copper and nickel (4) silver, zinc and copper

Last Answer : (3) zinc, copper and nickel Explanation: German silver is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc.

Which of the following cannot be beaten into Sheets? (1) Gold (2) Silver (3) Potassium (4) Aluminium

Description : Which of the following cannot be beaten into Sheets? (1) Gold (2) Silver (3) Potassium (4) Aluminium

Last Answer : (3) Potassium Explanation: Substances that can be beaten into thin sheets are called malleable. Most metals are malleable.

Which of the following chemicals is used in photography? (1) Aluminium hydroxide (2) Silver bromide (3) Potassium nitrate (4) Sodium chloride

Description : Which of the following chemicals is used in photography? (1) Aluminium hydroxide (2) Silver bromide (3) Potassium nitrate (4) Sodium chloride

Last Answer : (2) Silver bromide Explanation: Silver bromide (AOBr), a soil , pale-yellow, water insoluble salt well known (along with other silver hali(les) for its unusual sensitivity to light:. This ... making the Shroud of Turin. The salt can be found naturally as the mineral bromargyrite (bromyrite).