We report the discovery of the second pulsating hydrogen-rich ( DA ) white dwarf in the Kepler field , KIC 11911480 . It was selected from the Kepler -INT Survey ( KIS ) on the basis of its colours and its variable nature was confirmed using ground-based time-series photometry . An atmosphere model fit to an intermediate-resolution spectrum of KIC 11911480 places this DA white dwarf close to the blue edge of the empirical boundaries of the ZZ Ceti instability strip : T _ { \mathrm { eff } } = 12 160 \pm 250 K and \log { g } = 7.94 \pm 0.10 . Assuming a mass-radius relation and cooling models for DA white dwarfs , the atmospheric parameters yield : M _ { WD } = 0.57 \pm 0.06 M _ { \odot } . We also obtained two quarters ( Q12 and Q16 ) of nearly uninterrupted short-cadence Kepler data on this star . We detect a total of six independent pulsation modes with a \geq 3 \sigma confidence in its amplitude power spectrum . These pulsations have periods ranging between 172.9 s and 324.5 s , typical of the hotter ZZ Ceti stars . Our preliminary asteroseismic study suggest that KIC 11911480 has a rotation rate of 3.5 \pm 0.5 days .