Page 424 - Electrician -1st Year - TT

TYo (Power) T«t£ 1.12.106 dLô] ùRôPo× LÚj§Vp
GXdh¬μVu (Electrician) þ ¥Wôuv@TôoUo (Transformers)

êuß úTv ¥Wôuv@TôoUoLÞdLô] ùTôÕYô] TWôU¬l× (General
maintenance of three-phase transformers)

úSôdLeLs: ClTôPj§u Ø¥®p ¿eLs ùT\ úYi¥V A±Ü §\uLs
• ¥Wôuv@TôoUoLû[ TWôU¬jRÛdLô] úRûYLs Utßm SuûULû[ ®Y¬jRp
• ¥Wôuv@TôoU¬u BÙû[ Tô§dÏm LôW¦Lû[ áßRp
• ¥Wôuv@TôoUÚdÏ ùNnV úYi¥V TpúYß TWôU¬l×Lû[ áßRp.

TWôU¬l× ùNnV úYi¥V úRûY vùWudj Ïû\¡\Õ. CR]ôp
(Necessity of maintenance): ¿iP LôXm ¥Wôuv@TôoUÚdÏs DWlTRm ùNpYûR
©WfNû] CpXôR CVdLjûR TYo RÓdL úYiÓm.
¥Wôuv@TôoUo RWúYiÓm. CÕ ®ûX 2 Bd³_]ôp HtTÓm Tô§l×Ls
EVokR ªuNôR]UôRXôp ùRôPof£VôL (Effect of oxygen): ¥Wôuv@TôoU¬p Lôtß
LiLô¦l×m TWôU¬l×m úRûYlTÓ¡\Õ. CÚlTRôp Bd³_u CuÑúXNu cellu-
lose þÁÕ G§o ®û]Vôtß¡\Õ. Cellulose
Øuù]fN¬dûLÙPu TWôU¬l× ùNnYRôp
¿iP BÙÞm ©WfNû] CpXôUÛm, ùTôÚhLs AÝÏYRôp L¥]Uô] NL§
(sludge) EiPô¡\Õ. CÕ GiùQn
Ïû\kR ùNX®Ûm CRû] CVdL Ø¥Ùm.
ÑXTUôL ÑZÛYûR RÓd¡\Õ. CÕ
TÝÕ HtTÓYRtLô] LôWQeLs (Causes ¥Wôuv@TôoUo ùRôh¥«u A¥«p
of breakdown)
ùNuß Lô«p/ úLôoLû[ TÝRûPV
i RY\ô] Y¥YûUl× ApXÕ LhPûUl× ùNn¡\Õ.
3 §PlùTôÚhL°u AÝd¡u
ii RY\ô] ¨ßÜRp
LôWQUôL HtTÓm Tô§l×Ls (Effect
iii A§L TÞ of solid impurities): GiùQ«p Es[ §Pl
iv úRnUô]m ùTôÚhL°u AÝd¡u LôWQUôL ûP
GXdh¬d vùWudj Ïû\¡\Õ.
v LY²l©uûU, ®TjÕ, Ñtß×\ BTjÕ
4 YôoÉxþBp HtTÓm Tô§l×Ls
vi CVtûL úT¬Po. (Effect of varnishes): £X YôoÉxLs

TWôU¬l©u Ød¡V ϱdúLôsLs (Prin- ERôWQUôL Bdû^ÓLs ¥Wôuv
cipal object of maintenance): CuÑúXNû] SpX @TôoUo GiùQÙPu G§o ®û]Vôt±
¨ûX«p TWôU¬lTÕ Ød¡V ûY«u¥e ÁÕ NL§ûV (sludge)
ϱdúLô[ôÏm. DWlTRm, çÑ, A§L ùYlTm HtTÓjÕ¡\Õ.
úTôu\ûYL[ôp CuÑúXNu ºW¯Ü 5 R[okR ûY«u¥e¡]ôp HtTÓm
HtTÓ¡\Õ. CWNôV] Utßm ùTü¾L Tô§l×Ls (Effect of slackness of windings):
®û[ÜL[ôp CuÑúXN²u RWm Ïû\¡\Õ. R[okR ûY«u¥e¡]ôp ÑtßdL°u
NôRôWQUôL CVeÏm ùYlT ¨ûXVô] Esú[ §\l× HtThÓ ÏßdÏ Ñtß
0
0
75 C≠ÚkÕ 10 C A§LUôÏm úTôÕ HtThÓ ®Ó¡\Õ. CRtÏ ¥Wôuv
¥Wôuv@TôoU¬u BÙhLôXm Ïû\¡\Õ. @TôoUûW ùY°úV GÓjÕ ûP (tie) WôûP
ØßdL úYiÓm.
¥Wôuv@TôoU¬u BÙh LôXjûR
Tô§dÏm LôW¦Ls (FACTORS AFFECTING TWôU¬l× ùNnØû\ (MAINTENANCE PROCE-
THE LIFE OF TRANSFORMERS) DURE)
1 TôÕLôl× Øuù]fN¬dûLLs (Safety
1 DWlTRj§]ôp HtTÓm Tô§l×Ls
precautions)
(Effect of moisture): Lôt±Ûs[ DWlTRjûR
¥Wôuv@TôoUo G°§p E±g£d i TWôU¬lûT ùRôPeÏYRtÏ Øu]o
ùLôs¡\Õ. GiùQÙPu DWlTRm ¥Wôuv@TôoUûW ªuNlû[«≠ÚkÕ
úNokÕ ùLôsYRôp ûP GXdh¬d Õi¥jÕ®hÓ ùPoª]pLû[ Goj
ùNnV úYiÓm.
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