Page 327 - Electrician 1st year - TP

TYo (Power) T«t£ 1.12.98
GXdh¬μVu (Electrician)þ ¥Wôuv@TôoUov (Transformers)

£e¡s úTv ¥Wôuv@TôoU¬u Øû]VeLû[ N¬ TôojRp, ÕûQ
ùTôÚhLû[ LiP±Rp Utßm ¥Wôuv@TôoUo ®¡RjûR LQd¡ÓRp
(Verify terminals identify components and calculate transformation ratio of single phase
transformers)
úSôdLeLs: ClT«t£«u Ø¥®p ¿eLs ùT\ úYi¥V §\uLs
• £e¡s úTv ¥Wôuv@TôoU¬¡ ªðò˜ î膮L¼‰¶ Mõóƒè¬÷ ÜPî™
• HT Utßm LT ûYi¥eûL LiP±Rp
• ¥Wôuv@TôoUo ²ŸÁ‚èO¡ MAîjûR ¾oUô²ˆî™
– úYôph ÁhPo õNº¬ø
– AmÁhPo õNº¬ø.

úRûYVô]ûYLs (Requirements)

LÚ®Ls/NôR]eLs/CVk§WeLs
(Tools / Equipment) • BhúPô ¥Wôuv@TôoUo
IP-240V, OP 0-270V, 5A - 1 No.
• M.I. úYôph ÁhPo 0 - 250/300V 2 Nos.
• KmÁhPo (0 - 500 ohms) 1 No. ùTôÚhLs (Materials)
• M.I. AmÁhPo (0 - 10 A) 1 No. • Lj§ Ñ®hf DPST 16A 250V 1 No.
• M.I. AmÁhPo 100 mA 1 No. • ×x ThPu 6A, 250V 1 No.
• MC úYôph ÁhPo 0 - 15 V 1 No. • CûQdÏm úL©sLs
• DC Nlû[ 12 V 1 No.
úRûYVô] A[Ü
• £e¡s úTv ¥Wôuv@TôoUo
115/230 úYôphv,1KVA - 1 No.

ùNnØû\

ùNnV úYi¥V úYûX 1: º¬ùòƒè¬÷‚ è‡ìPî™

1 ùRôPo×ûPV Þ¼º¬ùòƒè¬÷ (HT & LT) Þ¼ «ü£®èO¡ I¡î¬ì¬ò»‹ ðF¾
KmÁhPo TVuTÓj§ è‡ìPVÜm. ªêŒò¾‹.
Fig 1-¡ ð® Üî¡ ªî£ì˜„CJ¬ù
ºî™ «ü£® æ‹v. Þ¶ HT/ LT
«ê£FdLÜm.
ûY«u¥e B°‹.
Þó‡ì£‹ «ü£® æ‹v. Þ¶
HT/ LT ûY«u¥e B°‹.

3 Fig 2-™ 致œ÷ð®, Ü¿ˆ¶‹ ªð£ˆî£¡
Ñ®hfûN ެ툶 HT Lô«Û‚° «ï˜F¬ê
ªu õöƒW´ ÜO‚辋.

4 HT º¬ùòƒè¬÷ A ñŸÁ‹ A âù
1 2
°P‚辋. LT º¬ùòƒè¬÷ a ñŸÁ‹ a
1 2
2 KmÁhPo Íô‹ HT/ LT ûY«u¥e¡u âù °P‚辋.
I¡î¬ìè¬÷ ¾oUô²dLÜm.
5 Ü¿ˆ¶‹ ªð£ˆî£¬ù Ü¿ˆF úYôph
vùPl PÜu ¥Wôuv@TôoU¬u LT ÁhP¬u ºœ ï蘬õ èõQ‚辋. ºœ
ûYi¥e °¬ø‰î I¡î¬ì¬ò êKò£è §ûN«™ ï蘉 º¬ùòƒèO¡
ªðŸP¼‚°‹. °Pè¬÷ î‚è¬õˆ¶‚ ªè£œ÷¾‹.

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