How generator is protected from switching surges and lightning surges?

How generator is protected from switching surges and lightning surges? 
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1 Answer

Answer :

Surge capacitor and lightning arrestor.  
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What does switching surges mean?

Description : What does switching surges mean? 

Last Answer : When a line is switched on high voltage will appear on the line due to its inductance and capacitance. This voltage is known as switching surges. 

For protection of rotating machines against lightning surges _______ is used.

Description : For protection of rotating machines against lightning surges _______ is used.  (1) lightning arrester (2) capacitor (3) combination of lightning arrester and capacitor (4) lightning conductor and arrester

Last Answer : For protection of rotating machines against lightning surges combination of lightning arrester and capacitor is used. 

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Description : Explain the surge protection of electric locomotive from i) Direct lightening stroke ii) Switching surges

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what device can you use to make sure a computer is protected against power surges?

Description : what device can you use to make sure a computer is protected against power surges?

Last Answer : Ground your self with a rest band or standing ona floormate.

What are the effects of excessive starts and repetitive surges?

Description : What are the effects of excessive starts and repetitive surges? 

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Area of Indian coastline which is vulnerable to storm surges, cyclones and tsunamis is? a. 5700 Km b. 3700km c. 2700km d. 4700km

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In order to reduce the voltage surges due to current chopping and capacitive current breaking,

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Description : Emulsifier protection is associated with: a) Grounding protection b) Dielectric strength protection of cables and conductors c) Lightning protection d) Fire protection

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Which of the following has highest diversity factor? a) Domestic lightning b) Commercial lightning c) Industrial power d) Domestic power

Description : Which of the following has highest diversity factor? a) Domestic lightning b) Commercial lightning c) Industrial power d) Domestic power

Last Answer : Ans: A

How standard lightning impulse wave is represented?

Description : How standard lightning impulse wave is represented?

Last Answer : Answer: Standard Lighting impulse wave is represented by 1.2/50 micro sec wave

What is meant by impulse ratio of any lightning arrester?

Description : What is meant by impulse ratio of any lightning arrester?

Last Answer : Impulse ratio of any lightning arrester is the ratio of breakdown voltage of the wave of special duration to breakdown voltage of a 50Hz wave

What is meant by Lightning arrester or surge diverter?

Description : What is meant by Lightning arrester or surge diverter?

Last Answer : A Surge Diverter is a device that is connected between line and earth, i.e, in parallel with the equipment under protection at the substation. It limits the duration and amplitude of the follow current

What is the difference between the lightning arrester and surge absorber?

Description : What is the difference between the lightning arrester and surge absorber?

Last Answer : Lightning arrester limits the duration and amplitude of the follow current while a surge absorber reduces the steepness of the wave front for a particular surge

What is the difference between surge arrestor and lightning arrestor?

Description : What is the difference between surge arrestor and lightning arrestor?

Last Answer : LA is installed outside and the effect of lightning is grounded, where as surge arrestor installed inside panels comprising of resistors which consumes the energy and nullify the effect of surge.

What Is The Difference Between Surge Arrestor And Lightning Arrestor?

Description : What Is The Difference Between Surge Arrestor And Lightning Arrestor?

Last Answer : LA is installed outside and the effect of lightning is grounded,where as surge arrestor installed inside panels comprising of resistors which consumes the energy and nullify the effect of surge.

What is the difference between surge arrestor and lightning arrestor?

Description : What is the difference between surge arrestor and lightning arrestor?

Last Answer : A:Lightning Arrestor is installed outside and the effect of lightning is grounded where as surge arrestor installed inside panels comprising of resistors which consumes the energy and nullify the effect of surge.

What is the difference between surge arrestor and lightning arrestor?

Description : What is the difference between surge arrestor and lightning arrestor?

Last Answer : Lightning arrestor is installed outside and the effect of lightning is grounded, whereas surge arrestor installed inside panels comprising of resistors which consumes the energy and nullify the effect of surge.

What is the type of Lightning Arrestor?

Description : What is the type of Lightning Arrestor?

Last Answer : Station type, heavy duty, gap less zinc oxide.  

What is the purpose of lightning arrestor?

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For a fault in switchyard lightning arrestor, what protection will act?

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Give the details of switchyard 220 kV CB, Isolator, CT, CVT and lightning arrestor.

Description : Give the details of switchyard 220 kV CB, Isolator, CT, CVT and lightning arrestor.  

Last Answer : 220 kV SF6 Circuit Breaker 1. Make - ABB 2. Air pressure blocking a. Close Block - 17.3 bar. b. Open block - 16.7 bar. c. Auto reclose block - 19 bar. 3. SF6 pressure block a. Alarm - 5. ... , storage and erection. Rated voltage : 216 kV rms. Operating voltage : 184 kV rms. 

What is the type of lightning arrestor for GT?

Description : What is the type of lightning arrestor for GT? 

Last Answer : Zn O (zinc oxide) types.  

In 220 kV switchyard why lightning arrestor should be properly grounded?

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Description : Write types of lightning arrestor.

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The rotation of a three-phase induction motor can be reversed by _____________. A. interchanging any two of the three line leads to the stator B. disconnecting one of the three line leads to the stator C. switching the shunt field coil leads D. permanently disconnecting any two of the three line leads to the stator

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What is resistance switching?

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According to Coast Guard Regulation (46 CFR) for emergency power and lighting systems, which of the listed items is the only permissible starting aid for the emergency diesel generator engine? A. Ether B. Lube oil heater C. Jacket water heater D. Fuel oil heater

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Coast Guard Regulations (46 CFR) require that each alternating current generator arranged for parallel operation shall be provided with _____________. A. more than one means of excitation B. individual circuit fuses C. a high back-pressure trip D. a reverse-power trip

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