Page 286 - Electrician 1st year - TP

AhPYûQ 1

3-phase appa- P.F. Cal-
Ammeter Voltmeter rent power Wattmeter 3-phase culated value Mea- Re-
Load condition reading reading in volt am- reading power sured ma-

Amps. I Volts E pere Watts W W X 3 . F . P = W x 3 value rks
PH PH 3 x E x I
3 x E x I PH PH
PH PH
Resistive load
Motor without load

Motor without load
but with capacitor

Motor with load
Motor with load and
with capacitor

CeÏ W = Yôh ÁhPo A[Ü 10 ®[dÏ TÞûY ©¬dLÜm. 3 úTv
(JÚ úTv^õp Es[ TYo) CuPdNu úUôhPôÚPu §\u LôW¦ûV
EVojÕm ùLlTô£hPûW Fig-2p
E = úTv ªu]ÝjRm
PH
Lôi©jÕs[T¥ CûQdLÜm.
I = úTv ªuú]ôhPm (ûXu
PH 11 Yôh ÁhPo Utßm §\uLôW¦
ªuú]ôhPj§tÏ NUm)
ÁhPoL°u ªuú]ôhP Lô«Xõu
8 LQd¡PlThP §\uLôW¦ûV úWugf CûQdLlThP TÞ®u
§\uLôW¦ ÁhPo Lôi©dÏm A[ÜPu ªuú]ôhP A[ûY ®P A§LUôL CÚdL
Jl©hÓ ¿eLs LY²jRûR GÝRÜm. úYiÓm.

LY²jRÕ 12 ùLlTô£hPo Ñ®hfûV OFF ¨ûX«p
ûYdLÜm. TYo Nlû[ûV ON ùNnÕ
ÁhP¬u SLoûY LY²dLÜm.
. 13 AhPYûQ þ1p ϱl©hÓs[ ªu

9 EeLs A[ÜLû[ T«tßS¬Pm TÞ®uT¥ ÁhP¬u A[ÜLû[
AhPYûQ -1p T§Ü ùNnVÜm.
Lôi©jÕ AàU§ûV ùT\Üm.
14 TYo Nlû[ûV ‘OFF’ ùNnÕ CûQl×Lû[
©¬dLÜm.

262 TYo : GXdh¬μVu þ (NSQF- Revised 2022) T«t£ 1.10.86