Abstract:

Safety barrier is an important component of the intrinsically safe explosion-proof equipment.This paper implements a highly reliable isolation safety barrier for the transmission of dc power supply based on the reliable isolation transformer and its protection circuit.The detailed parameters and the key designs of the transformer and associated components of the barrier are given.This safety barrier fully meets EN60079 requirements of the intrinsic safety explosive-proof equipment.

Key words: safety barrier;intrinsic safety;isolation transformer;associated components