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Begin OCR Text:
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_ROup 3_ -I_-
A __ E _ _ A_ o _ _
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S.E.V. MO_OROLA _--=.
DESCRl PTlON --m-._
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V_(O_3L_V_o(_ l
Fig. 3_2. S.E.V. Motorol8 8lternator dlgmantled
l Brush holder 3 Slip ring end 8hield 6 Rotor ."
2 Isolat_Dn d_ode with 4 Rect_f_er (s_l_con d_odes) 7 Dr_ve end shield
holder 5 __a_D_ g _u__ey w__h _a_ .._
__I_
_-_ _ -_ _ - _ _ _ -- __ - _ __he alternator is a three-phase, delta-connected _
_
_ alternating unit which is belt-driven from a pulley
l. on the crankshaft. _
_ The alternator has a bu_lt-in rect_fier _n the slip ring _
. end shield. Th_s rect_fIer cons_ats of s_x s_liçon dio- ._
i des The rotor _s a claw-pole type w_th the field
_ winding fed across two sl_p rings. The rotor is so
_ des_gned as to perm_t a max_mum alternator speed .
_i _ of 15OO r.p.m.
l._
J _'
'L' - _ _ V__oL_v_oO '
Flg. 3-3. Inner wlrlng of the al_rn8tor _
_ o _o_ _DDD _ __ __ 6_D 1oDD _Wo _ _oooo_Pff
l tator 4 Re___f_e_ d_odeg vo_v_ .
2 Rotor (f_eld windlng) 5 IsolatIDn diode l03UL'
3 Slip rIngg and brush hoIder FIg_ 3__ Output _urve for alternator _
3_2 '
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