This standard specifies a method for measuring the continuous current passage of a coupled contact pair and its connection in the microvolt range, ie when a current is passed through the contacts which is very weak compared to their rated current. It is to be used in conjunction with EN 2591.
ONORM EN 2591-B3-1994 history
1994ONORM EN 2591-B3-1994 Aerospace series. Elements of electrical and optical connection. Test methods. Part B3: Electrical continuity at microvolt level