We present photometric and spectroscopic data analysis and orbital period study of an early-type interacting binary system V382 Cyg by using all the available data .
We made a simultaneous light and radial velocity curve solution .
The derived physical parameters of the primary and secondary stellar components are M _ { 1 } = 27.9 ( 5 ) M _ { \odot } , M _ { 2 } = 20.8 ( 4 ) M _ { \odot } , R _ { 1 } = 9.7 ( 2 ) R _ { \odot } , R _ { 2 } = 8.5 ( 2 ) R _ { \odot } , \log { ( L _ { 1 } / L _ { \odot } ) } = 5.152 ( 20 ) and \log { ( L _ { 2 } / L _ { \odot } ) } = 4.954 ( 19 ) while the separation of the components is a = 23.4 R _ { \odot } .
Newly obtained parameters yield the distance of the system as 1466 ( 76 ) pc .
Analyses of the mid-eclipse times indicate a period increase of \frac { dP } { dt } = 4.2 ( 1 ) \times 10 ^ { -7 } days/yr that can be interpreted in terms of the high mass transfer ( \frac { dM } { dt } = 6.1 ( 5 ) \times 10 ^ { -6 } M _ { \odot } /yr ) from the less massive component to the more massive component .
Finally we modelled the evolution of the components using nonconservative codes and discussed the obtained results .
The age of the binary system is estimated as 3.85 Myr .