Презентация на тему: MODULE 5 Alternators ver : 1.01

MODULE 5 Alternators ver : 1.01
Electro Magnetic Induction
1. Construction of brushless Generator
Rotating parts of Alternator : Poles, Exciter and Rectifier
2. Excitation System/ AVR
Excitation system of Generator Nishishiba
Parallel work of Generators
Cross Current Compensation Circuit
3 Maintenance of Generator
Replace Air Filters every 500HRS
Clean Inside
Final Condition after cleaning
Check condition of all automatic controls
Damage of cables by sharp braket
4. Trouble shooting (Generator and supporting El. Equipment)
ATTENTION!
4. Air Circuit Breaker
Construction & features
MODULE 5 Alternators ver : 1.01
Multy -Protective Characteristics:
MODULE 5 Alternators ver : 1.01
Maintenance of ACB
TROUBLE SHOOTING
TROUBLE SHOOTING
TROUBLE SHOOTING
TROUBLE SHOOTING
TROUBLE SHOOTING
Thank you very much
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Первый слайд презентации: MODULE 5 Alternators ver : 1.01

1. Construction of brushless generator 2. Excitation System /AVR/parallel work 3. Maintenance of Generator 4. Trouble shooting (Generator and supporting el. equipment.) 5. ACB ( construction/maintenance/trouble shooting)

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Слайд 2: Electro Magnetic Induction

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Слайд 3: 1. Construction of brushless Generator

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Слайд 4: Rotating parts of Alternator : Poles, Exciter and Rectifier

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Слайд 5: 2. Excitation System/ AVR

Voltage Regulator AVR

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Слайд 6: Excitation system of Generator Nishishiba

Exciter compensate voltage drop of generator under load condition and provides parallel operation of generators

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Слайд 7: Parallel work of Generators

Servomotor is responsible for active power sharing How to check servomotor performance & proper adjustment? Change the speed of idling DG manually from MSB sinchro panel and check the time with stop watch: 1Hz – 10sec AVR is responsible for voltage drop compensation and take part in reactive power sharing

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Слайд 8: Cross Current Compensation Circuit

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Слайд 9: 3 Maintenance of Generator

Check Tightness of Terminals

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Слайд 10: Replace Air Filters every 500HRS

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Слайд 11: Clean Inside

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Слайд 12: Final Condition after cleaning

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Слайд 13: Check condition of all automatic controls

Constantly check servomotor, AC/DC converter & speed relay condition Check performance of cable lying on diesel

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Слайд 14: Damage of cables by sharp braket

Rust Powder shows Damaged Cable

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Слайд 15: 4. Trouble shooting (Generator and supporting El. Equipment)

Servomotor or it’s AC/DC converter failure. Proximity sensor or speed relay failure. In case of excitation system located on generator - damage of wire insulation due to vibration Loosening of terminal lugs Loosening & movement of poles of Generator Damage of cables if not proper fixed on diesel Trouble cases are:

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Слайд 16: ATTENTION!

Proper maintenance carried out in time: Ensures good performance of all electrical equipment Prevents some troubles in future

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Слайд 17: 4. Air Circuit Breaker

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Слайд 18: Construction & features

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Слайд 20: Multy -Protective Characteristics:

PRE - TRIP ( Preferential Trip ) yellow lines 50 sec < T < 3 min 0.8 5 I o (of rated current ) LTD ( Long Time Delay ) blue line – time depends on current STD ( Short Time Delay ) dark blue 3.5 I o T = 1000, 400, & 80 mS INST ( INSTANT TRIP ) violet line. Short circuit current 8.0 I o

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Слайд 21

ACB protective device adjustments EC-1 p. 28

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Слайд 22: Maintenance of ACB

For easy maintenance and testing all ACB has Draw out construction with intermediate TEST position (main circuit is disconnected)

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Слайд 23: TROUBLE SHOOTING

Withdraw ACB only in OPEN condition to prevent serious damage on equipment

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Слайд 24: TROUBLE SHOOTING

mv Swift Ace ACB Trouble

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Слайд 25: TROUBLE SHOOTING

mv Swift Ace ACB Trouble

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Слайд 26: TROUBLE SHOOTING

mv Swift Ace ACB Trouble Crew removed ACB’s front cover and manually open ACB

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Слайд 27: TROUBLE SHOOTING

Don’t forget to reset pushbutton “ACB trouble” on Generator panel If manual open/closing of ACB impossible - the problem inside ACB In other cases try to withdraw and insert the unit and then check remote controls of ACB

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Последний слайд презентации: MODULE 5 Alternators ver : 1.01: Thank you very much

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