BS EN 60255-21-2:1996

1 Scope
2 Object
3 Definitions
3.1 Shock test
3.2 Shock response test
3.3 Shock withstand test
3.4 Bump test
4 Requirements for shock and bump tests
4.1 Test apparatus and mounting
4.2 Shock test severity classes
4.3 Bump test severity classes
4.4 Recommendations for the selection of shock and
     bump test severity class
4.5 Test procedure for shock response test
4.6 Test procedure for shock withstand test and bump
     test
5 Criteria for acceptance
5.1 Acceptance criteria for shock response test
5.2 Acceptance criteria for shock withstand test and
     for bump test
Figures
Appendix A Selection criteria for shock and bump test
            parameters a) and output circuit response
            during shock response test b)

Includes the acceptance criteria to be satisfied during and after testing and test severity classes. Based on the tests of Parts 2.1 Ea and Eb of BS 2011.

This standard is part of a series specifying the vibration, shock, bump and seismic requirements applicable to electromechanical and static measuring relays and protection equipment with or without output contacts.

This standard includes two types of test:

• the shock test (on energized and non-energized specimen);

• the bump test (on non-energized specimen), and is generally based on IEC 68-2-27 and IEC 68-2-29.

The requirements of this standard are applicable only to measuring relays and protection equipment in new condition. The tests specified in this standard are type tests.