Generator Rswm2x23 Mw

8/9/2019 Generator Rswm2x23 Mw

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Work done on generator. DATE: 18/07/2009

1. PMG & exciter cover removed.

2. Exciter yoke is dismantled from its armature.

3. Generator top cover is removed.

. Generator front & rear side insulated material cover removed.

!. Generator rig"t side #.$. connection.

%. Generator space "eater connection removed.

. Exciter end side 'earing top cover removed.

(. #.G. end side 'earing top cover removed.

). *lip ring car'on 'rus" removed.

1+. Generator #.G. side stator cover removed.

11. ,etural & line side panel cover -it" "elp of tarpoline.

12. #.G. side generator 'earing top part removed.

13. Generator covered -it" "elp of tarpoline.

1. Generator netural side stator 'us 'ar terminal/0 0 and $ removed.

1!. ,etural & line side umpers removed.

1%. Generator stator line side 'us 'ars removed

Date: 19/07/09

4m'ient #emp.5 3+ degree centigrade.



1. IR value of Rotor eld winding

6ield -dg to Eart"7 Greater t"an 1++ mega o"m

2. IR value of Arature of E!"iter

*lip ring to eart"7 Greater t"an 1++ mega o"m.

#. I$edan"e te%t of Rotor.Generator rotor impedance value 'efore dismantling.

&oltage ' A.(.&olt) (urrent 'A$) I$edan"e '*+)2+ +.3 %%.%+ +.%2 %.!2%+ +.) %3.(3

(+ 1.23 %!.+1++ 1.!1 %%.2312+ 1.( %.2

4vg. value of 8mpendence7 %!.%1 9"m

,. -ea%ureent of enerator air ga$ efore t+reading out t+eRotor

6ront top : 1%.+ mm 6ront rig"t : 1%.2mm

6ront left : 1%.(mm

6ront 'ottom : ,ot measured

/ear top : 1!.(mm

/ear rig"t : 1%.!mm

/ear left : 1%.+mm

/ear 'ottom : ,ot measured.

Date: 20/07/2009



1. Generator rotor t"reading out not completed due to touc"ing ofretaining ring

to t"e inner core of *tator.

2. Gear 'ox side ournal 'earing removed.

3. Materials given tur'o engineering.

,ylon rope 2+ meter.

Date: 21/07/2009

1. Generator rotor comes out side from stator.

2. Generator rear side ournal 'earing top cover removed & kept on #G;oor.

3. Glass s"eet of 6ront pedestal removed & kep to #G ;oor.

. Generator covered -it" "elp of tarpoline.

!. Materials given tur'o engineering.

<ocktite )!.

. *tator & rotor cleaning done -it" "elp of clot".

. Generator rear 'earing pedestal mica s"eet cover t"ickness.

2.!mm

7. Generator out put terminal mica s"eet t"ickness.

2+.+mm

Date: 22/07/2009

1. Generator rear pedestal 'lue matc"ing done.



2. /otor "eat up -it" "elp of "elogen due to raining -eat"er.

3. Medium 4mery paper given to tur'o engineering.

. Generator front pedestal 'lue matc"ing done.

!. *tator "eat up -it" "elp of "elogen due to raining -eat"er.

Date: 2#/07/2009

1. Martial given #ur'o Engineering.

Petrol: 2! lt. Paint 'rus": nos.



Marking clot": !mtr.

2. *tator & rotor cleaning -ork under progress -it" "elp of petrol.

3. *tator & rotor varnis" material issue from store.

Epoxy gel : 2kg 1kg=2

>ardener 11> : 2?G 1?G=2

#"inner 221: !.%kg (++gm=

#"inner 23 : !.%kg (++gm=

@iluent AcB : 1kg 1kg=1

$ecktol red :2kg 1kg=2

. /otor varnis" in used material 'y percentage.

$ecktol red : 1++C #"inner 23 : 2!C

!. *tator varnis" in used material 'y percentage.

Epoxy gel : 1++C

#"inner 221 : 2!C

>ardener 11> : +C

@iluent AcB : 1+C

%. /otor & stator varnis" -ork completed.

. /otor & stator varnis" dry -it" "elp of "alogens.

Date: 2,/07/2009.

1. Material issue from store.

@P kit.

2. Te%ting of rotor.



8nsulation resistance 8/.

@iode sleeve insulation resistance.

6ield resistance.

@iode c"ecking.

A. in%ulation re%i%tan"e 'IR): e!"iter winding

Measuring instrument: !++D digital Megger.

,atural to eart": 2++m

. Diode %leeve IR value: all value% in 3

4ront %ide: Diodeno.1

Diode no.2

Diode no.#

Diode no.,

Diode no.

Diodeno.

23 21 ().( )3. ).) (%3+ 1% )(.! 1!% 22) 1+)

Rear %ide:

Diodeno.1

Diode no.2

Diode no.#

Diode no.,

Diode no.

Diodeno.

%.! 1%) (.1 13+ 1!( 122! 1)1 13 13! 1!2 1++

Inner ring IR value%: all value% in 3

1). 1.( 2(.% 33.1 2.) 32.

*uter ring IR value%: all value% in 3

%) 3+) 3% 1)+ %!( 3(2

5li$ ring to %li$ ring IR value%: all value% in 3

233 !%! 23 3+1 22 3)!

/otor -inding to eart" insulation resistance: ).1m



Eart+ to %li$ ring in%ulation re%i%tan"e:

8nner slip ring: 3% m

9uter slip ring: (+ m

/otor -inging resistance: %m

E!"iter eld winding in%ulation re%i%tan"e:

Eart" to terminal Frst:

Eart" to terminal second:

Exciter field -inding resistance: 12.!m

PMG insulation resistance value *tar connection:

/7E 12M 7E 12M

$7E 12M

Generator rotor impedance value after cleaning:

&oltage (urrent I$edan"e2+. +.1 !+.)+. +.(! .!3%+.! 1.2) %.)+(+ 1.%) .31++. 2.12 .3%

12+.2 2.!2 .+1+. 2.) .(%



1%+.1 3.33 (.+(1(+.1 3.1 (.!2+1.2 .12 (.(322+ .) (.++

4vg. value of 8mpendence7 (.1

4m'ient #emperature 5 3% c

@iode value 5

Diode 6o. 4orward voltagevalue

Rever%e voltagevalue

1 +.33% +2 +.32( +3 +.3 + +.33% +! +.31 +% +.31 +

Te%ting of %tator.

In%ulation re%i%tan"e.

5+ort Eart+ +a%e 1 -in -in/7 $ +++ M 1++++ M$7/ !+++ M 1++++ M$7 / !++ M 1++++ M

inding re%i%tan"e.

/ P>4*E: 7 .3 m

P>4*E: 7 .! m

$ P>4*E: 7 (.!m

$ & P>4*E: 7 1(.( m



$ & / P>4*E: 7 1. m

& / P>4*E: 7 13.! m

@ate: 7 2!H+H2++)

1. 6ront & rear 'earing pedestal 'lue matc"ing completed.

2. 6ront & rear 'ottom part ournal 'earing 'lue matc"ingcompleted.

3. 6ront & rear top part of 'earing & pedestal top part'et-een clearness c"eck.

4. /otor cleaning done -it" "elp of 'lo-er.

5. *tator cleaning done -it" "elp of vacuum cleaner.

6. Generator rotor going in side of stator.

7. 6ront & rear pedestal Fxed on foundation plate.

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Generator Rswm2x23 Mw