Yes, there are part time courses in distance diploma in electrical Engineering. both courses are available to working people in Government service. Such programs are aimed at a person's interest in the advancement of their qualification and at the same time doing the job.

There are opportunities of pursuing part time diplomas at State Technical Education Boards, at Polytechnic College approved by AICTE, or through institutions such as IGNOU and NIELIT through which the learning mode offers flexibility. Evening or weekend classes are also offered in the same college and in a particular case horizontal entry is also provided to the people having previous technical experience or education.

It normally requires a 10th or 12th pass, although it will also depends on the institute. When you are applying do check with AICTE or a  technical board acceptable course and the are course details such as years of duration, mode of study (offline or online) and certification.