Page 423 - Electrician -1st Year - TT
P. 423

¥Wôuv@TôoúU`u ®¡R BnÜ (Trans-                         ÏßdÏf Ñtß BnÜ  (Short circuit test):
            formation ratio test): ¥Wôuv@TôoU¬u                   ¥Wôuv@TôoUÚdÏ úSW¥VôL ÑûUûV
            ùNLiP¬ûV §\kÕ ûYjÕ ©ûWU¬dÏ                            CûQdL           Ø¥VôR         ãr¨ûXL°p,
            YûWVßdLlThP Uôß§ûN ªu]ÝjRm                            ¥Wôuv@TôoU¬u                        ùNLiP¬
            YZeLlTP úYiÓm. N¬Vô] úYôph                            ûY«u¥e¡p ÏßdÏf Ñtß HtTÓj§
            ÁhPûW TVuTÓj§ ©ûWU¬ Utßm                              Ïû\kR ªu]ÝjRm ©ûWU¬ ûY«u¥¡tÏ
            ùNLiP¬«u ªu]ÝjRjûR A[dL                               A°jÕ ùNLiP¬ ûY«u¥e¡p ØÝ
            úYiÓm. CÕ ®¡R Y¥YûUlTôÏm.                             ªuú]ôhPm HtTÓUôß ªu]ÝjRjûR
                                                                  N¬ ùNnV úYiÓm. A§L¬dÏm ùYlTjûRd
            ÑûU úNôRû] (Load test): N¬Vô] ÑûU«p
                                                                  ùLôiÓ CuÑúX`u YûL ¾oUô²dLl
            ¥Wôuv@TôoUûW CûQjÕ ØÝ ÑûU
                                                                  TÓ¡\Õ.
            ªuú]ôhPm ùNLiP¬«p TôÙmT¥
            ùNnV úYiÓm. ùRô¯XL ùRoúUô ÁhPûW
                                                                    ùTôÕYôL GiùQn þ ϰWûYl×
            TVuTÓj§ ûY«u¥e¡p A§LUôÏm
                                                                    ¥Wôuv@TôoUoLs  A ©¬ûYÙm,
            ExQjûR LY²dL úYiÓm.
                                                                    Lôt±]ôp             ϰWf         ùNnÙm
            ¥Wôuv@TôoU¬u ùYlTm BWmTj§p                              ¥Wôuv@TôoUoLs ‘A’  ApXÕ  ‘E’
            A§LUô¡ £±Õ úSWj§tÏl ©\Ï ¨ûXVôL                          ©¬ûYÙm ùLôiPûYLs BÏm.
            ¨tÏm. EVokR A[Ü ùYlT¨ûXûV
            ϱjÕd ùLôiÓ ¥Wôuv@TôoU¬u
            AûUl©tÏ EhThÓ Es[Rô G]
            N¬TôodLÜm.




                                                       AhPYûQ 1

                              RWm YônkR RLh¥u A[ÜLs (Standard size of stampings)

              RLh¥u
              ϱlÀÓ          a       b      c       d      e      f      g      i      k1      k2    k3
              EI42           42      28     7       3.5    21     14     28     35     3.5     —     24.5
              EI48           48      52     8       3.5    24     16     32     40     4       —     28
              EI54           54      36     9       3.5    27     18     36     45     4.5     —     31.5
              EI60           60      40     10      3.5    30     20    40      50     5       —     35
              EI66           66      44     11      4.5    33     22     44     55     5.5     —     38.5

              EI78           78      52     13      4.5    39     26     52     65     6.5     —     45.5
              EI84           84      56     14      4.5    42     28     56     70     7       —     49
              EI92           92      62.3   11.3    4.5    51     23     69     82     5       6.5   57.5
              EI106          106     70.5   14.5    5.5    56     29     77     94     6       8.5   64.5

              EI130          130     87.5   17.5    6.8    70     35     95     115    7.5     10    80
              EI150          150     100    20      7.8    80     40     110    135    7.5     12.5  92.5
              EI170          170     117.5  22.5    8      95     45     125    150    10      12.5  107.5
              EI195          195     134.5  25.5    9.5    109    51    144     171    12      13.5  122.5
              EI231          231     166    29      10     137    58     173    204    13.5    15.5  152.5

               NôRôWQ RLh¥u §iûU 0..35 ª.Á Utßm 0.5 ª.Á







                              TYo : GXdh¬μVu (NSQF - Revised 2022) R.T. Ex.No. 1.12.105                        403
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