Includes the acceptance criteria to be satisfied during and after testing. Also specifies test severity classes for the relays; and covers both vibration response and vibration endurance tests as in Part 2.1Fc of BS 2011.Cross References:BS 142:Section 1.1BS 2011:Part 2.1FcBS 3015BS 4727:Part 1:Group 03BS QC 160000:Part 1