Page 217 - Electrician -1st Year - TT
P. 217

JV¬e ETLWQeLs IE ®§Ls (Wiring accessories, IE rules)

            úSôdLeLs: ClTôPj§u Ø¥®p ¿eLs ùT\ úYi¥V A±Ü §\uLs
            • ÅhÓ JV¬eL°p TVuTÓjRlTÓm ETLWQeLû[ C]Yô¬VôL ©¬jRp, ùR°YôL
              áßRp, C]m LôÔRp Utßm AYt±u TVuLû[ áßRp
            • ªuNlû[ Utßm TôÕLôl×dÏ ùRôPo×ûPV IE ®§Lû[ áßRp.

            I¡Qò™ àðèóíƒèœ                        (Electrical     Þò‚è‹ ñŸÁ‹ ðò¡ð´‹ Þì‹
            accessories): I¡Qò™ I¡²Ÿ¬ø ð£¶è£ˆî™,                  ÝAòõŸ¬ø ªð£¼ˆ¶  Ñ®hfèO¡
            êKŠð´ˆ¶î™ Ü™ô¶ 膴Šð´ˆ¶î™                             õ¬èèœ  (Types of switches according to their
            «ð£¡ø ðEè¬÷ ªêŒò‚îò Ü®Šð¬ì                           function and place of use)
            àÁŠ¹ ð°FèÀ‚° I¡Qò™ àðèóíƒèœ
                                                                  – £e¡s úTôp, å¼-õN Ñ®hf (Single pole,
            â¡Á ªðò˜.
                                                                    one-way switch)
            àðèóíƒèO¡ õó‹¹  (Rating of accessories):
                                                                  – £e¡s úTôp, Þó‡´-õN Ñ®hf (Single
            àðèóíƒèO¡ RWñ£ù I¡«ù£†ì õó‹¹
                                                                    pole, two-way switch)
            6,16, ñŸÁ‹ 32 Ý‹Hò˜èœ Ý°‹.  ñŸÁ‹
                                                                  – CuPoÁ¥Vh Ñ®hf (Intermediate switch)
            I¡ù¿ˆî õó‹¹ ñ£ÁF¬ê I¡«ù£†ì‹,
            240 «õ£™† Ý°‹. (B.I.S. 1293 - 1988)                   – ñE-Ü¿ˆ¶‹ Ü™ô¶ Ü¿ˆ¶‹-
                                                                    ªð£ˆî£¡  Ñ®hf  (Bell-push or push-button
            àðèóíƒèœ-ªð£¼ˆ¶î™  (Mounting of
                                                                    switch)
            accessories): Þ‰î õ¬è àðèóíƒèœ ²õK¡
                                                                  – Þ¿‚°‹ Ü™ô¶ ìóJ™ ªî£ƒ°‹
            î÷ˆF™ Ü™ô¶ à†ð°FJ™ ªð£¼ˆ¶‹
                                                                    Ѯhf (Pull or ceiling switch)
            õ®õ¬ñŠH™ A¬ì‚A¡øù (flush type).
                                                                  – P×s úTôp Ñ®hf (Double pole switch) (D.P.
            ²õŸP¡ î÷ˆF™ ªð£¼‰¶‹ õ¬è  (Surface
                                                                    switches)
            mounting type): Þšõ¬è àðèóíƒèœ ²õŸP¡
                                                                  – D.P.I.C. Ñ®hf (Double pole, iron clad (D.P.I.C.)
            î÷ˆF¡ «ñ™ º¿õ¶‹ ªîK»‹ð®
                                                                    switch)
            ªð£¼ˆîŠð´Aø¶.
                                                                  – T.P.I.C.  Ñ®hf  (Three-pole, iron clad (T.P.I.C.)
            ²õŸÁ‚°œ ñ¬øˆ¶ ªð£¼ˆ¶‹ õ¬è
                                                                    switch).
            (Flush mounting type): Þ‰î õ¬è àðèóíƒèœ
            Ñ®hf îè†´ì¡ Þ¬íˆ¶ ²õŸP¡                               «ñŸÃPò¬õèO™ 1,2,3,4 ñŸÁ‹ 6 ÝAò¬õ
            î÷ˆ¶ì¡                      å¡PJ¼‚°‹ð®                ²õŸP¡ e¶ Ü™ô¶ ²õŸPÂœ ñ¬øˆ«î£
            ªð£¼ˆîŠð†®¼‚°‹.                                       ªð£¼ˆ¶‹ õ¬èèO™ àœ÷ù.

            åòKƒ G˜ñ£QŠ¹èO™ ðò¡ð´ˆîŠð´‹                           £e¡s úTôp å¼-õN Ñ®hf (Single pole,
            I¡Qò™ àðèóíƒèœ ÜõŸP¡ ðò¡è¬÷                           one-way switch):  Þ¶ å¼ Þó‡´ º¬ù
            ªð£¼ˆ¶ Þùõ£Kò£è HK‚èŠð´Aø¶.                           ެ특 ê£îù‹.  Þ¶, å¼ I¡²Ÿ¬ø
                                                                  ñ†´‹ 膴Šð´ˆî ðò¡ð´ˆîŠð´Aø¶.
            – 膴Šð´ˆ¶‹ àðèóíƒèœ  (Controlling                    Þ¬õ I¡ M÷‚°, I¡ MCP Ü™ô¶  5
               accessories)
                                                                  Ý‹Hò˜-©[d  ÝAòõŸ¬ø 膴Šð´ˆî
            – H®ˆ¶‚ªè£œÀ‹ àðèóíƒèœ  (Holding                      ðò¡ð´ˆîŠð´A¡øù.  å¼-õN  Ñ®hf
               accessories)                                       Fig 1-™ 裆ìŠð†´œ÷¶.
            – ð£¶è£Š¹ àðèóíƒèœ (Safety accessories)               £e¡s úTôp, Þó‡´-õN Ñ®hf (Single
            – ªõO ެ특 ãŸð´ˆ¶‹ àðèóíƒèœ                          pole, two-way switch): Þ¶ å¼, Í¡Á º¬ù
               (Outlet accessories)                               ެ특 ê£îù‹.                     Fig  2-™ 裆®
                                                                  Eœ÷ð®          å¼       G¬ôJ™          Þó‡´
            – ªð£¶õ£ù àðèóíƒèœ  (General                          ެ특è¬÷ Þ¬í‚è«õ£, ¶‡®‚è«õ£
               accessories)
                                                                  ªêŒòô£‹.  Þ‰î õ¬è Ñ®hfèœ ð®‚膴
                                                                  «ð£¡ø Þó‡´ ÞìƒèOL¼‰¶ å¼
                                                                  M÷‚¬è 膴Šð´ˆî ðò¡ð´ˆîŠð´Aø¶.





                               TYo : GXdh¬μVu (NSQF - Revised 2022) R.T. Ex.No. 1.7.62                         197
   212   213   214   215   216   217   218   219   220   221   222