EPSS full form

Meaning : Electrical power sub system

Category : Aerospace
Sub Category : Onboard Systems 
Type : Initialism

What does EPSS mean or stand for ?

Electrical Power Subsystem is the power management and distribution in a spacecraft or satelite.It is one of the most vital components of the module and is responsible for almost all functions onboard like communications,life support,avionics and others.In its absence there could be a substantial handicap to the entire mission and to avoid this there are secondary backup subsystems in place.