Low-frequency (10 Hz-6.5MHz) dielectric investigations are carried out in Smectic-A(deVr) phase exhibited by a chiral Liquid Crystal molecule viz., TSiKN65F. Phase transition temperature determined by dielectric method agrees with TM and DSC. LF dielectric study revealed two relaxations in SmA(deVr)* phase, i.e., a Low-frequency sluggish LF-mode and a High-frequency fast HF-mode of dipole reorientation. Dynamics estimated through slope of f(R)(T) infers faster HF-mode by three orders. The Arrhenius shift of HF-mode f(R) infers an activation energy of 0.72 eV. Influence of field on LF mode is studied. Off-centered dielectric dispersion is analyzed through Cole-Davidson equation. Trends of static permittivity (epsilon(o)), high-frequency permittivity (epsilon(infinity)), dielectric increment Delta epsilon, and alpha-parameter studied from Cole Cole plots are explained.